CN102357695A - Method and device for soldering metal parts and components by adopting high-frequency induction brazing - Google Patents
Method and device for soldering metal parts and components by adopting high-frequency induction brazing Download PDFInfo
- Publication number
- CN102357695A CN102357695A CN2011103187088A CN201110318708A CN102357695A CN 102357695 A CN102357695 A CN 102357695A CN 2011103187088 A CN2011103187088 A CN 2011103187088A CN 201110318708 A CN201110318708 A CN 201110318708A CN 102357695 A CN102357695 A CN 102357695A
- Authority
- CN
- China
- Prior art keywords
- high frequency
- frequency coil
- welding
- magnetic rings
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- General Induction Heating (AREA)
Abstract
The invention discloses a method for soldering metal parts and components by adopting high-frequency induction brazing, which can complete high-frequency brazing assembly molding of multiple soldering points of multiple soldering parts in one time. The method is dependent on a device, which comprises a high-frequency coil and a magnetic ring pressure lever, wherein the high-frequency coil and the magnetic ring pressure lever are connected with a high-frequency controller respectively, and are controlled uniformly by the high-frequency controller. By utilizing the device, the method comprises the following steps of: treating the surface of a part to be soldered; assembling the soldering device, and distributing the high-frequency coil and a magnetic head pressure lever; selecting a brazing filler metal to be matched with the part to be soldered, and preparing paste brazing flux FB303P; optimally allocating positions and quantities of the brazing filler metal and the brazing flux; setting corresponding process values by means of the high-frequency controller to perform heat soldering, preserving the temperature, switching off, and cooling by using cooling water to the room temperature. According to the method, one-time soldering molding can be realized by multiple soldering of multi-process multi-point and other processes.
Description
Technical field
The invention belongs to the high-frequency welding technical field, relate to a kind of high-frequency induction brazing welding method of metallic element, the invention still further relates to the employed welder of this kind high-frequency induction brazing welding method.
Background technology
The high-frequency induction brazing solder technology of existing metallic element is a kind of (it is identical that induction welding is divided into power frequency, intermediate frequency, superaudio, high frequency, hyperfrequency induction welding basic principle according to the frequency difference of power supply) of induction welding connection technology; Being applied in industrial circles such as high and low voltage electrical equipment, machine-building, automobile making, generating equipment, solar energy, electric power accessory, air-conditioning, compressor, cooler, light fixture, motor, shipbuilding, rail vehicle, Aero-Space, weaponry, nuclear industry, petrochemical industry is with a wide range of applications; Usually be used in the butt welding of the symmetric shape of section bar longitudinal seam welding, pipe or plate (band) materials such as T shape, I shape, H shape, cable sleeve, tubing, fin and pipe; Its basic principle is to flow to the conductor (being generally the induction coil that a siphunculus is processed the vertical direction multilayer) that is curled into ring-type with alternating current exactly; Produce flux thus; Metal is placed wherein or nearby; Flux will connect metallic object, producing vortex flow (rotatory current) with flux from the direction of paying, so induced-current is under the influence of vortex flow; The metal self-heating makes the fusing of brazed seam and solder and it is sprawled, Here it is eddy-current heating.With this, to heating objects such as metals, heating under non-contacting state.At this moment the characteristic of vortex flow is: on the approaching object of coil, concentrate; Eddy-current heating shows on object surfaces strong and the more weak characteristics in the inside; Come the concentrated heating in position with such principle to the needs of heating object; Reach instantaneously heated effect, thereby enhance productivity and workload, reach the welding purpose.The main difficulty of this technology is the coupling of energy between setting and the weld parts of induction coil (copper pipe of interior copper cooling water); This high-frequency induction brazing solder technology extensively adopts in commercial production, but in many instances, adopts this technology to be difficult to obtain good effect, and its deficiency mainly shows as:
The heat induced coil manufacturing technology of prior art; It is the coil that a copper tube is turned in vertical direction multilayer spring-like shape; This coil only can once be responded to group welding piece of welding; Can't realize once processing simultaneously a plurality of group welding pieces, run into that requirement is enhanced productivity and powerless when enlarging output, become the biggest obstacle that production capacity and economic benefit improve in enterprise.
Common metal will be responded to welding; Select suitable welding equipment and welding procedure very crucial; Usually way is earlier welded part constantly repeatedly to be studied; When studying result and welding quality and require to meet, as basic parameter, and then submit these parameters to device fabrication manufacturer; Device fabrication manufacturer studies basic parameter according to the requirement of manufacturing articles with these; Selection offers welding manufacturing enterprise than existing force big one equipment to second gear, and welding manufacturing enterprise just is applied in the production this way studying the condition of basic parameter as welding procedure; The reliability of the equipment of selecting is restricted with compatibility, Weldability, product switching etc.; That confirms equipment and technology studies the cost height, and the technology of confirming like this can produce the leakiness weld seam, comprises following bad phenomenon: mother metal autoclasis (penetrability fire check), corrosion, field trash (black burning oxide), fusion not enough (cracking), the edge fusion is not enough, middle part fusion not enough (middle part cold welding), weldbonding (cold welding), cast welding (fragility weldering), pore (pin hole) etc.
These bad phenomenon to the influence of welded part are: reduce sealing, reduction weld strength and electric conductivity, absorption absorption moisture, cause weld corrosion, these all can cause very big waste.
Particularly run into dissimilar metal iron copper spare, copper silver part, copper spare, silver-colored part, copper facing, silver plate, titanium steel, titanium stainless steel, too parts such as ferrotianium adopt lap weld, use single induction coil near the weld parts surface or will be enclosed within the single induction coil by the weldering weld parts, welded and be furnished with solder between weld parts; The difference because the liquid-solid phase line temperature of unlike material differs greatly; The difference of phase transition temperature; The solid solubility of foreign material is little, the vapo(u)rability of the spreadability of the difference of linear expansion coefficient, thermal conductivity, conventional solder flux, solder, wettability, diffusivity, trickling property, intergranular permeability, mechanical meshing property, intermediate alloy property, element and these performances of scaling loss property become deteriorations, the big internal stress initiation of the generation in soldering interface Interface Crack; Another produces big fragility phase intermetallic compound or fragility phase gap; Causing soldering strength reduces significantly; Particularly run into the high and low requirement of temperature rise of electric conductivity that the low-voltage electrical apparatus requirement is welded to connect part, for example use high phosphorus copper powder solder, just do not reach requirement, even form brazed seam, intensity is also very fragile; Another is exactly that these electric conductors are because welding under field conditions (factors); Electric conductor copper silver part sensing capability is poor, high electric conductor belongs to that the little heating of absorbed power that high heat conductive body, the too high induction coupling ability difference of joint face produce is difficult for, the equipment of same power connect the iron steel part can, the same copper silver part of welding just takes place difficult; Electric conductor is because welding makes that coating material is for example silver-plated under field conditions (factors), copper facing or fine copper, fine silver surface produce very serious oxide layer; The perhaps many for example silver-colored graphite contact of material, polycrystalline diamonds (PCD) that contain carbon are producing oxidation and graphitization respectively very soon more than 800 ℃, back operation need increase the operation of removing the oxide layer surface, and material itself is caused waste, and cost is high; Another increases the device of throwing in the protection gas of nitrogen, argon gas, hydrogen, helium etc. for example in when welding, or adopts a plurality of vacuum high-frequency induction brazing processes, complex process, low to apparatus and process is had relatively high expectations, the change conference of the fit-up gap of part causes soldering strength significantly decay, welding efficiency; Another one is exactly to adopt a siphunculus to process an induction coil of vertical direction multilayer; Directly to heat welded such as iron copper spare, copper silver part, copper spare, silver-colored part, copper facing, silver plates; Coating and material self surface is by severe oxidation and destruction, and product will obtain to use, and needs pickling and coating processing again; Intractable after some oxidation has increased product cost.
In addition; The selection of soldering processes also has a principle; It is exactly the phase transition temperature that brazing temperature must not be higher than the B phase of materials to be welded; With avoid because of welding process to being soldered the damage of material self performance, this is technological difficulties of solder bonding metal, also is difficult point of technology of dissimilar metal high-frequency induction brazing.
In the induction welding procedure; Normally used toroidal inductor also is annular at the thermal source that high frequency induction current produces, and the center heat flow density is minimum, is also increased gradually along with radius increases heat flow density by the center; When being increased to maximum; Begin decay after keeping a segment distance, and occur a higher relatively heat flow density district on the contrary, the little crest of a capable heat flow density of triangle radially occurring at the edge of annulus.
Another technological difficulties of dissimilar metal high-frequency induction brazing are: selecting the high-frequency heating to reduce heat time heating time; In the process of raising the efficiency; The brazing process of heating rapidly can cause the soldering interfacial reaction too violent; Interface likewise is prone to produce intermetallic compound and catches the molten condition solder, reduces the wettability of solder.
Present high-frequency induction brazing adopts water-cooling process rapidly, and the process of setting gradient is bigger than normal, destroys material solidification characteristic primary crystal and forms insufficiently, produces coagulation defect, makes the soldering interface stability decreases in the process under arms.
Existing high-frequency induction brazing is the collection skin and contiguous principle that utilizes electric current, and brazed seam and solder rely on the faradic resistance heat in the high-frequency alternating magnetic field to realize, frequency is directly proportional with induced-current, is inversely proportional to the electric current length of penetration; The electric current length of penetration is directly proportional with the square root of the resistivity of conductor, is inversely proportional to the square root of frequency and magnetic conductivity; Alternative frequency is high more, and speed of welding is high more, and the skin effect of electric current is strengthened; Common 85% current strength is distributed in the conductor skin depth, makes the electric current length of penetration more little, and the thickness of heating is just thin more; The thickness that soldering is not more than 5mm obtains general, and thick of soldering can only be leaned on the reduction frequency, is realized to nexine conduction heat by surface heat; Will occur surface heat like this and not arrive the nexine solder joint, the too early melt flow of solder loses, thereby thick of soldering just is restricted greatly.
Summary of the invention
The high-frequency induction brazing welding method that the purpose of this invention is to provide a kind of metallic element; The easy reduction sealing, reduction weld strength and the electric conductivity that exist in the prior art have been solved; Absorb the problem of adsorbing moisture, causing weld corrosion; The method of confirming to select the welding procedure and the equipment of selection fast is provided simultaneously, has realized once welding simultaneously many products or product and carry out a plurality of solder joints and weld simultaneously.
Another object of the present invention is, the employed welder of high-frequency induction brazing welding method of above-mentioned metallic element is provided.
The technical scheme that the present invention adopted is; A kind of high-frequency induction brazing welding method of metallic element can once be accomplished the high frequency brazing assembling moulding of the many solder joints of many weldments, and this method relies on a kind of device; The structure of this device comprises high frequency coil and magnetic rings depression bar two parts; This high frequency coil and magnetic rings depression bar two parts all are connected with high frequency controller, accept the unified control of high frequency controller
The structure of high frequency coil is; The copper pipe along continuous straight runs of a water flowing is turned to the high frequency coil of a plurality of openings; The high frequency coil head and the tail of each opening connect successively, and cooling water is from first high frequency coil one end water inlet, and backwater constitutes cooling circuit behind last high frequency coil of always flowing through;
The structure of magnetic rings depression bar part is; Correspondence is provided with magnetic rings respectively above each high frequency coil axle center; Each magnetic rings potsherd through separately respectively is installed on the copper tube lower end separately; Be communicated with water inlet pipe respectively on every copper tube of potsherd, the upper end of each copper tube is connected with slide bar through adjusting lever, and slide bar upwards is connected with cylinder; Cylinder is connected with PLC, and the control of accepting PLC moves up and down,
The inventive method is utilized above-mentioned device, implements according to following steps:
The processing on step 1, weld parts surface: degrease, remove excessive oxide skin;
The assembling of step 2, welder, arrange a high frequency coil and a magnetic depression bar:
Make that being provided with of high frequency coil is satisfied: a plurality of high frequency coils that current direction is consistent, vertical direction at least 1 is enclosed between the copper pipe at that diameter matches with the weld parts heating part, high frequency coil induction position or equidistance parallel with the heating surface of weld parts, adjacent turn;
In addition; The magnetic rings depression bar of a plurality of correspondences is arranged in a plurality of high frequency coils top of along continuous straight runs series connection coiling; The axis centre of each magnetic rings depression bar and the central vertical of corresponding a plurality of coils; The weld parts of prepackage is placed in the anchor clamps, each coil coil is adjusted to and part welding position equal-height position;
Step 3,, firmness requirement height high according to the electric conductivity requirement select silver-base solder and welded part to mate; Perhaps,, firmness not high according to electric conductivity requires high, selects copper phosphorus pricker solder and welded part coupling;
Be equipped with paste brazing flux FB303P simultaneously;
current unit is A; The weldment unit of weight is Kg; Chronomere is second
The insulation electric current calculates to be pressed: the A of insulation electric current=welding current/(1.3-1.56),
Temperature retention time is calculated and is pressed: temperature retention time=weld interval * (1.5-5);
Another technical scheme that the present invention adopted is; A kind of high-frequency induction brazing welder that is used for metallic element comprises high frequency coil and magnetic rings depression bar two parts, and this high frequency coil and magnetic rings depression bar two parts all are connected with high frequency controller; Accept the unified control of high frequency controller
The structure of high frequency coil is; The copper pipe along continuous straight runs of a water flowing is turned to the high frequency coil of a plurality of openings; The high frequency coil head and the tail of each opening connect successively, and cooling water is from first high frequency coil one end water inlet, and backwater constitutes cooling circuit behind last high frequency coil of always flowing through;
The structure of magnetic rings depression bar part is; Correspondence is provided with magnetic rings respectively above each high frequency coil axle center; Each magnetic rings potsherd through separately respectively is installed on the copper tube lower end separately; Be communicated with water inlet pipe respectively on every copper tube of potsherd, the upper end of each copper tube is connected with slide bar through adjusting lever, and slide bar upwards is connected with cylinder; Cylinder is connected with PLC, and the control of accepting PLC moves up and down.
The invention has the beneficial effects as follows: use a high frequency coil and a magnetic depression bar, select solder, brazing flux between the weldment contact-making surface for use, weldment surface-coated solder flux; Confirm welding condition according to high frequency electric source respectively, control magnetic circuit infiltration routes and density, make welding current be the insulation electric current 1.3-1.56 doubly; Temperature retention time is 1.5-5 a times of weld interval; And on the welding high frequency controller, continuous control is set, and the high-frequency induction brazing of once accomplishing the many solder joints of many weldments through anchor clamps and the clamping of magnetic rings depression bar assembles moulding, and step is scientific and reasonable; Obvious technical effects, specifically comprise following some:
1) with the setting of the diameter of high frequency coil (copper pipe of interior copper cooling water), internal diameter, the number of turn, the number of turns and device current, frequency, power, and weld parts between the coupling of energy suitable.
2) between the welding-resistant metal especially of the same race, between different-thickness or dissimilar metal sheet, the wire rod; Overcome common high frequency brazing solder technology and can produce the bad problem of leakiness weld seam; Like mother metal autoclasis, corrosion, field trash (black burning oxide), fusion not enough (cracking), the edge fusion is not enough, the phenomenon of middle part fusion not enough (middle part cold welding), weldbonding (cold welding), cast welding (fragility weldering), pore (pin hole), sealing, weld strength and the electric conductivity of raising welded part, has prevented weld corrosion.
3) welding fabrication of different parts on a plurality of parts or a plurality of part is once welded in realization, satisfies and enhances production capacities, and reduces equipment investment, stops heating product surface or coating are destroyed, and makes product have to increase new surface treatment procedure; According to formula and welding range of choice, select welding equipment and welding procedure fast simultaneously, many-side reduces cost, and welding efficiency is improved more than 10 times, shortens 5 times weld interval; Saves energy, environmental protection.
4) the magnetic rings depression bar is as induction reactance, improved welded part sensing capability, improved copper silver coupling effect, increased the absorption thermal power of welded part in the short time, improved welding efficiency; Changed the position and the scope of high frequency electric glide path, high frequency electric density more concentrates on the center, top layer of weld parts, makes the center heat flow density become maximum by minimum; Become along with radius increase heat flow density also increases gradually by the center, also reduce gradually along with radius increases heat flow density by the center.Such benefit is: or else thick of soldering reduces frequency, passes to solder that heat makes brazed seam by surface heat to nexine and melts at first and be achieved, and has improved the soldering thickness of brazing member; The outer peripheral solder of weldment melts at last, eliminates the too early melt flow of solder simultaneously and loses phenomenon, makes the corrosion of weld seam nexine, slag inclusion under the pressure of magnetic depression bar, extrude nexine to the outside, under the washing away of water, peels off; The weld seam periphery forms mellow and full fillet and fine and close weld seam; Weld strength is high.
5) best configuration through solder and brazing flux position; Brazing flux guarantees to fill up the joint gap fully after the solder fusing, makes liquid brazing flux become the line trend with solder, has guaranteed the spreadability and the brazed seam property of solder.
6) fast, the diathermanous glossiness of heating is good, and the surface does not have burn, oxide layer is few, energy-conservation, the welding smoothness is even, and the welding good evenness, adhesive force is good, heat treatment deformation is little; Can heat complex-shaped weld parts; Operating environment is good, easy to operate, easy control of temperature, and good product quality is protected for coating material and surface, welded part surface.
Description of drawings
Fig. 1 is the employed high-frequency coil structure sketch map of the inventive method;
Fig. 2 is the employed and supporting magnetic rings depression bar sketch map of high frequency coil of the inventive method;
Fig. 3 is that the inventive method embodiment two silver points touch bridge assembly welding structural representation;
Fig. 4 is the structural representation of two silver points of contact bridge welding of Fig. 3 embodiment;
Fig. 5 is the single silver contact of four U type contact bridges among the inventive method embodiment and the mounting structure sketch map of a welding fabrication of contact plate;
Fig. 6 is the double end silver contact in two U type contact bridges and the mounting structure sketch map of a welding fabrication of contact plate among the inventive method embodiment.
Among the figure, 1. high frequency coil a, 2. high frequency coil b, 3. magnetic rings a, 4. magnetic rings b, 5. screw, 6. potsherd, 7. return pipe; 8. water inlet pipe a, 9. water inlet pipe b, 10. adjusting lever, 11. slide bars, 12. cylinders, 13. contact bridges, 14. silver contacts; 15.U the type contact bridge, 16. support members, 17. conducting strips, 18. high frequency coil d, 19. high frequency coil e, 20. high frequency coil f, 21. silver contact a; 22. silver contact b, 23. silver contact c, 24. silver contact d, 25.U type contact bridge a, 26.U type contact bridge b, 27.U type contact bridge c, 28.U type contact bridge d; 29. support member a, 30. support member b, 31. support member c, 32. support member d, 33. high frequency coil c, 34.U type contact bridge e, 35.U type contact bridge f.
The specific embodiment
High-frequency welding is exactly to have utilized kelvin effect to make the surface of the concentration of energy of high frequency electric in weld parts; And utilize kindred effect to control the position and the scope of high frequency electric glide path; Kindred effect is because the effect of induction reactance in essence; Induction reactance plays a part leading in high frequency electric; Kindred effect becomes near along with the spacing of increase frequency and adjacent conductor and increases, if around proximity conductor, add a magnetic core, high frequency electric will more concentrate on the top layer of weld parts so.
With reference to Fig. 1, Fig. 2; The present invention is a kind of high-frequency induction brazing welding method of metallic element; A kind of welder structure that is relied on is, comprises high frequency coil and magnetic rings depression bar two parts, and this high frequency coil and magnetic rings depression bar two parts all are connected with high frequency controller; Accept the unified control of high frequency controller; Only shown the high frequency coil a1 and the high frequency coil b2 of level series connection among Fig. 1 embodiment, Fig. 2 has shown two corresponding magnetic rings, all shows 4 high frequency coils of level series connection among Fig. 5, Fig. 6 embodiment.
The structure of high frequency coil is; The copper pipe along continuous straight runs of a water flowing is turned to the high frequency coil of a plurality of openings; The high frequency coil head and the tail of each opening connect successively; Cooling water is from the water inlet of (first) high frequency coil a1 one end, and backwater constitutes cooling circuit behind (last) high frequency coil b2 that always flows through; High frequency coil quantity is at least 2, or more than 2;
The structure of magnetic rings depression bar part is; Correspondence is provided with magnetic rings a3 and magnetic rings b4 respectively above high frequency coil a1 and high frequency coil b2 axle center; Magnetic rings a3 and magnetic rings the b4 potsherd through separately 6 respectively are installed on two copper tube lower ends with screw 5; The material of potsherd 6 is resistant to elevated temperatures insulating materials, is communicated with water inlet pipe a8 and water inlet pipe b9 on two copper tubes respectively, is communicated with return pipe 7 between two copper tubes; The upper end of copper tube is connected with slide bar 11 through adjusting lever 10, and slide bar 11 upwards is connected with cylinder 12; Cylinder 12 is connected with PLC, and the control of accepting PLC moves up and down.
The high-frequency induction brazing welding method of metallic element of the present invention is, copper pipe (or excellent part or plate) the along continuous straight runs coiling (processing) of a water flowing is become a plurality of high frequency coils that current direction is consistent, vertical direction at least 1 is enclosed between copper pipe that a plurality of diameters match with the weld parts heating part, high frequency coil induction position or equidistance parallel with the heating surface of weld parts, adjacent turn; The magnetic rings depression bar of a plurality of correspondences is arranged in a plurality of coils top of along continuous straight runs series connection coiling; The axis centre of each magnetic rings depression bar and the central vertical of corresponding a plurality of coils; The part of prepackage is placed in the anchor clamps, each coil is adjusted to and part welding position equal-height position, set solder and brazing flux; With the magnetic rings depression bar push down respectively downwards part contact firm after; Control high-frequency welding electric current and weld interval, and control preheat curent and preheating time, the multiple welding that realizes the multiple operation multiple spot is in the moulding that is welded of an operation.
High frequency coil can select copper rod, copper sheet, copper pipe to process.High frequency coil adopts in the pipe water flowing and at the postwelding water cooling mode.
The head of high frequency coil is selected the annealing copper tube of the diameter 3-7mm of 1mm wall thickness for use, or selects for use wall thickness to be not less than 1mm, the annealing copper tube of diameter 5-10mm.Initiating terminal and clearing end at the annealing copper tube are connected with two exits, and the copper pipe external diameter of two exits is 1.2 times that 5-15mm, length are not less than the high frequency coil diameter, and two exit copper pipes are connected with equipment induction generator water inlet pipe and water outlet pipe.
The diameter of high frequency coil is big more, and the number of turn of high frequency coil is few more;
Need welding power big more, the number of turn of high frequency coil is few more;
Thermal conductivity or electric conductivity are good more, and the number of turn of high frequency coil is many more;
Power is big more, and the frequency of high frequency coil is big more;
Bonding power is big more, and the high frequency coil quantity that level is moved towards series connection is just many more.
Table 1: the corresponding relation that is the high frequency coil internal diameter and the heating target material selection number of turn
Keep principle according to welded part and high frequency coil, select suitable high frequency coil internal diameter numerical value less than the gap of 0.2 times of welded part area.
Connect face area between welding current=sheet material current density * weldment, the unit of sheet material current density wherein is A/cm
2, connecting the end face square measure between weldment is cm
2
Welding depression bar pressure=cylinder piston area * 0.785 * pressure (kg/cm
2), cylinder piston square measure wherein is cm
2
Table 2: the matching list of the size of high frequency coil and the number of turn and the former limit of the extension set high frequency transformer number of turn
Silver-base solder is selected for use: Ag-Cu system comprises one of Ag-Cu-Li, Ag-Cu-Ni, Ag-Cu-Zn (like Ag-Cu-Zn-Sn, Ag-Cu-Zn-Gd, Ag-Cu-Zn-Ni, Ag-Cu-Zn-In, BAg30CuZn); Solder thickness 0.03-0.7mm.
Copper-phosphorus brazing alloy system selects for use: one of BCu92PAg (Ag2), BCu91PAg (Ag2), BCu89PAg (Ag5), BCu88PAg (Ag5), BCu87PAg (Ag6), BCu80PAg (Ag15), BCu76PAg (Ag17.6), BCu75PAg (Ag18), BCu80SnPAg (Ag5); Solder thickness 0.03-0.85mm.
Table 3: equipment input power, output welding current and tolerance frequency matching list
Continuous table 3
For being provided with of part High-frequency machine industry power supply enterprise: the electric current of the actual output of power supply is very little, but for the consideration in user's uses, in the power supply demonstration, multiply by multiple usually.Usually multiply by 20 times, sensuously electric current is very big.Therefore, not multiply by 20 times in the show value of the output current of table 3 * 20 times, the specific embodiment, both are consistent in the required power supply actual output current of welding.
According to the difference of weldment, the computing formula of welding required theoretical power (horse-power) is:
Power (KW)=weldment weight (Kg) * temperature (℃) * specific heat capacity { J/ (kg) ℃ }/3600 (seconds), that is:
According to the difference of weldment, the computing formula of welding required actual power is:
Power (KW)=weldment weight (Kg) * temperature (℃) * specific heat capacity { J/ (kg) ℃ }/3600 (seconds)/(1-k), that is:
Wherein, copper spare thermal loss coefficient k is got 0.30-0.35; Silver part thermal loss coefficient k is got 0.35-0.40; Steel and iron parts thermal loss coefficient k is got 0.28-0.32.
In sum, the high-frequency induction brazing welding method of metallic element of the present invention, implement according to following steps:
Step 3,, firmness requirement height high according to the electric conductivity requirement select silver-base solder and welded part to mate; Perhaps,, firmness not high according to electric conductivity requires high, selects copper phosphorus pricker solder and welded part coupling; Be equipped with paste brazing flux FB303P simultaneously;
Welding current=(1061.4 * weldment weight/1.68 * time)
1/2=(631.54 * weldment weight/time)
1/2, current unit is A, and the weldment unit of weight is Kg, and chronomere is second,
Insulation electric current=welding current/(1.3-1.56) A,
Temperature retention time=weld interval * (1.5-5 doubly);
The protection of step 7, brazed seam or whole weld parts postwelding is handled: clean brazing flux residue, plate other inert metal protective layer, oxidation or Passivation Treatment, spray paint etc.
High-frequency ac welding between the dissimilar metal different-thickness:
Like Fig. 4, first weldment among the embodiment 1 is a U type contact bridge 15, is the iron copper plating groove; Second weldment is that middle 17, the three weldments of conducting strip that are welded with are that two ends, iron copper plating groove surface respectively are welded with a silver contact 14;
At first be selection equipment:
Select plant capacity, theoretical power (horse-power) wherein is:
Power (KW)=weldment weight (Kg) * temperature (℃) * specific heat capacity { J/ (kg) ℃ }/3600 (seconds),
Iron copper plating groove weight 0.033Kg, two silver contact 0.011Kg, conductive plate weight 0.021Kg, silver-bearing copper group welding piece gross weight are 0.065Kg; Silver Ag specific heat capacity 234J/kg; Copper Cu specific heat capacity 390J/kg; Brazing temperature is selected 770-900 ℃ for use, brings above parameter into formula and calculates:
The theoretical power (horse-power) of silver-bearing copper group welding piece is 6.8-7.97KW,
Considering the heat radiation of air, water-cooled and weld parts, is the 30%-35% of theoretical power (horse-power) to the loss of power, then silver-bearing copper group welding piece actual power=(6.8-7.97)/(1-(30%-35%))=9.71-12.26 (KW).
Select the high-frequency welding equipment of 40KVA, input voltage 380V-420V; Output current 180-2000A; Tolerance frequency 45-200KHz; The interval 80-160KHz of frequency of optimum traffic; Heat time heating time 1-99s, temperature retention time 1-99s; The requirement of input power cable; 16mm
2Copper cash; Input power switch 3 * 125A; The equipment ground line is 6mm
2Annealed copper wire; Equipment water inlet pipe internal diameter 25mm, outlet pipe internal diameter 13mm, water-connecting valve water pipe internal diameter 25mm, cooling water pressure＞0.2MPa; Flow＞20L/Min, 1 of main frame water inlet, 3 of delivery ports; 2 of extension set water inlets, 3 of delivery ports; Self band epoxy resins casting full water cooling transformer, the radio-frequency generator main frame interconnects with extension set; Temperature high frequency controller, induction coil device are contained in extension set, are supplied power by solid-state circuit program weldering control system; Adopt brazing flux and solder, set up what a ratio-frequency welding program and make it weld the acceptance test standard: ultrasonic thin detection ratio of brazing area＞70%, shearing force＞700-2000N{ low-voltage electrical apparatus is with contact plate (bridge) } or the desired minimum of contact material resistance welded file.
Next is following to the specific descriptions of three kinds of parts among the embodiment 1:
First weldment is the low-voltage electrical apparatus contactor U type contact bridge 15 behind the cold rolling, with 1.2mm cold-rolled steel sheet Q235-A-F punch forming 39.5mm * 11.5mm * 4.8mm, the arc angle of contact bridge two-end-point throat thickness 2mm, cold-rolled steel sheet Q235-A-F punch forming; Spot-welded on moulding contact bridge grooved: the contact bridge channel material is through deoiling, clean copper facing 0.6um; Punch forming 11.5mm * 5m circular arc sample, the cross section is that 11.5 * 2mm, 11.5 * 2mm are that means of spot welds connects face.
Second weldment is conducting strip 17 copper plates of the T3Y2 material thickness 1.5mm that uses of contact bridge grooved, punch forming 34.5mm * 9.0mm.And require before being equipped with welding: clean, coated with flux FB303P; At solder sheet 34.5mm * 9.0mm * 0.15mm.
The 3rd weldment is that material therefor is the low-voltage electrical apparatus contactor silver contact 14 behind the cold rolling, and material adopts silver alloy Ag-SnO
2 (9)-In
2O
3 (4), solder side covers that layer is not less than 0.16, thickness 2.5mm, is cut into the rectangular specimen of 11mm * 8mm * 2.5mm to the tablet cold stamping, and as solder side, this face requires before welding the face of cross section 11mm * 8mm: clean, coated with flux FB303P; At solder sheet 11mm * 8mm * 0.2mm.
(1) low-voltage electrical apparatus contactor silver contact 14 is groundwork faces, and heating needs protection, and therefore selects U type contact bridge 15 as heating surface.
Heating used a high frequency coil and a magnetic depression bar are set:
Arrange a high frequency coil and a magnetic depression bar; A magnetic depression bar point diameter is contained in the back of depression bar front end for
magnetic rings, magnetic rings
High frequency coil is selected the annealing copper tube of wall thickness 1.5mm, diameter 7mm for use; It is consistent that the copper pipe of a water flowing is turned between the high frequency coil (each opening promptly is heating tool-high frequency coil) of 2 openings or equidistance parallel with the heating surface of weld parts with the copper pipe that matches, responds to the position of weld parts heating part, adjacent turn current direction; 2 coil series connection of same plane coiling, the resistant to elevated temperatures insulating materials of coiling (silicone tube, glass tape) between the adjacent turn; Two exit copper pipe external diameter 7mm, length are 39.5 * 1.2 times=47.4mm; Promptly two exit copper pipes are selected 50mm length, the following internal diameter of coil ￠ 50mm; Select 2 circles, high frequency coil is disposed in series in magnetic rings depression bar vertical lower along level, adopts in the pipe water flowing and in the postwelding water-cooled but.
(2), select the principle of welding temperature, current time and pressure to be according to the thermophysical property of silver contact 14, conducting strip 17, U type contact bridge 15 (being three weldments of present embodiment):
According to electric current length of penetration, selection frequency, current corresponding intensity, the thermal conductivity of high frequency electric characteristic decision, select the welding current pulse duration, elevated temperature strength selection pressure and reference are revised prevention crackle and heat sensitivity etc.
The brazing flux welding temperature is chosen as solder and is lower than 50 ℃-120 ℃; Silver contact 14,, 770 ℃-900 ℃ of the best brazing temperatures of conducting strip 17; Consider the spreadability and the brazed seam property of solder, select solder brazing to connect, brazing flux is selected FB303P, 850 ℃ ± 50 ℃ of heating-up temperatures, and solder selects argentiferous at the silver-base solder more than 20%, 800 ℃-970 ℃ of money base brazing temperatures according to electric conductivity and the requirement of product electric life; Select Ag-Cu-Zn (BAg25CuZn), 700 ℃ of solidus temperatures, 800 ℃ of liquidus temperatures, solder BAg25CuZn specification is 34.5mm * 9mm * 0.15mm.
(3) to high frequency controller frequency of optimum traffic, output welding current, weld interval are set
Welding frequency is selected 160KHz, according to ratio of brazing area greater than 70% with good brazed seam and outward appearance fillet, select weld interval and electric current;
Insulation electric current=welding current/(1.3-1.56);
Temperature retention time=weld interval * (1.5-5) doubly;
The thickness and the above formula of specification substitution of silver contact 14, conducting strip 17, U type contact bridge 15 are calculated the high-frequency induction welding technique condition; In addition, high frequency coil is made into coil corresponding and that product keeps 1-2mm gap, shape to coincide.
A contact bridge contact silver-bearing copper group welding piece gross weight 0.065Kg; Be controlled at 23-35s heat time heating time;
Select 10 seconds weld interval, then temperature retention time=weld interval * (1.5) doubly=15 seconds;
Welding current=40A;
Insulation electric current=welding current/1.3=40/1.3=31 (A);
More than be the HFI welding power demand and the welding parameter of Practical Calculation, it is generally following that comprehensive above technical scheme obtains used welding procedure:
Actual silver-bearing copper group welding piece power 9.71KW-12.26KW; Welding frequency 160KHz;
Select welding current 40A, weld interval 10s, insulation electric current 31A, temperature retention time 15s,
Magnetic rings
depression bar closing speed is 30-40mm/s; Welding load is 1.5Kg; A magnetic depression bar point diameter is that the test of
ratio of brazing area is 85%-100%; Clip and paste the power test and be 950-2200N; Speed of welding for the highest 4 solder joints/minute; (silver contact 14, conducting strip 17, U type contact bridge 15) silver-bearing copper group welding piece feed is a manual mode.
The welding operation process details:
In conjunction with Fig. 1; Present embodiment welding operation process is: above welding procedure is imported respectively in the weldering control device and in the PLC high frequency controller (program setting); Welding current and weld interval, welding current was provided by transformer by the control of weldering control device, through high frequency coil induction output; Pressure is set by adjuster and pressure regulator valve and is set, and cooling water provides air pressure, and solder flux FB303P cream is coated on each part that will weld; Give and place silver-base solder sheet BAg25CuZn in low-voltage electrical apparatus contactor U type contact bridge 15 grooveds; After being placed on conducting strip 17 on the silver-base solder sheet, put on the anchor clamps of equipment assigned address, place silver-base solder sheet Bag30CuZn earlier, on the silver-base solder sheet, place silver contact 14 again for top two sections of the contact bridge grooved.Repeat this action equally, another group each soldering part and solder brazing flux are placed on the assigned address of another anchor clamps.
With reference to Fig. 3, Fig. 4,, brazing flux FB303P is coated on U type contact bridge 15 and conducting strip 17 with the 13 HFI welding moulding of a contact bridge; Conducting strip 17 is placed on the equipment support members 16; Place BAg25CuZn silver soldering sheet on the conducting strip 17, U type contact bridge 15 is pressed on the conducting strip 17, places BAg25CuZn silver soldering sheet again at U type contact bridge 15 two ends; Two silver contacts 14 are pressed on the BAg25CuZn silver soldering sheet, brazing flux FB303P are coated on two silver contacts 14 again.(correspond to this section description, Fig. 3 is welding figure; Fig. 4 is the sketch map at the lid two ends of two silver contacts 14 U type contact bridge 15 of being contained in a grooved; The part drawing of a conducting strip 17 is housed) in the middle of U type contact bridge 15 grooves of grooved
Press the device start button, the action of PLC control magnetic valve, the cylinder action of the break-make control each point of magnetic valve; Cylinder drives two groups of high frequency coils and the magnetic depression bar moves; Be enclosed within after high frequency coil a1 and the high frequency coil b2 water flowing around the faying face or top (go up weldment and be around single-piece is placed on, big part or many colleague's welderings be placed on above), cylinder 12 drives slide bars 11 the magnetic rings a3 on two copper tubes, magnetic rings b4 and potsherd 6 is depressed, after contact bridge groove, conducting strip, silver contact are compressed; Water inlet pipe a8 and water inlet pipe b9 water flowing respectively; Transformer provides electric current under the instruction of PLC program, weldment produces induced-current at high frequency coil, and faying face to be welded is in the alternating magnetic fields of high frequency 160KHz; Produce the flow through resistance heating at surface to be welded place of eddy current; At first will be before the solder fusing, brazing flux FB303P is fusion earlier, removes the welded part surface oxide layer; Then silver-base solder sheet Bag30CuZn fusing along joint 0.1-0.2mm gap orthoscopic sprawl the bottom of sprawling with moistening formation faying face rapidly, after welding current is accomplished fusing; Continue heating and insulation by the insulation electric current; The fusing soldering of faying face is sprawled the bottom uniformly penetrating in conductive plate, contact, contact bridge groove soldering surface layer; Under the pressure and rotation magnetic force of oxide layer at the magnetic depression bar of brazing flux fusion, and eliminating joint outside under the extruding of the solder of trickling, wait solder to form the fillet of slyness after; At this moment welding insulation electric current and pressure are applied welding process through the magnetic depression bar to welding weld parts; Welding is accomplished, and the logical cooling water of outage obtains required secure seal property weld seam with weldment and coil cool to room temperature.
Welding result check checking:
Welding result is done the ultrasound examination test; Examination and test of products ratio of brazing area after the welding reaches 85%-100%; The power of cliping and pasting is set to 1900N, 1800N, 2200N, 2100N, 1900N, 1850N, 2000N, 1950N respectively; Hold 10s through difference being cliped and pasted try hard to keep, obscission does not all appear in each weldment.
Destructiveness is peeled off; Welding base metal fracture and serious curling, weld layer firmness obscission does not all appear in each weldment.
Check through 100,000 products all conforms to quality requirements, and has eliminated leakiness weld seam bad phenomenon, improves sealing, weld strength and the electric conductivity of welded part, has prevented weld corrosion, and the weld is accepted rate keeps 100%, and welding efficiency improves 180%.Iron copper plate and silver contact, contact bridge, electric-conductor surface are protected in welding process well, are the silver-plated surface of good that provides of postorder operation.
Welding (silver brazing of copper iron connects) between the dissimilar metal different-thickness:
Processing object is a production A.C. contactor company contact assembly, is an iron copper plating groove, and the centre is welded with conductive plate, two ends, iron copper plating groove surface respectively are welded with a silver contact.
Constituting contact bridge to following A.C. contactor according to the model of embodiment 1 connects really with contact-welding technology and high-frequency induction brazing and adds up: with iron copper plating groove different-thickness and specification, silver contact, the above formula calculating of conductive plate substitution high-frequency induction welding technique parameter; In addition, copper pipe is bent into a plurality of high frequency coils corresponding and that product keeps 1-2mm gap, shape to coincide.
Table 4: be high-frequency induction brazing basic technology parameter comparison (A.C. contactor contact bridge)
Table 5: typical high-frequency induction brazing basic technology parameter comparison (A.C. contactor contact bridge)
Table 6: typical high-frequency induction brazing soldering result contrast (A.C. contactor contact bridge)-weld is accepted rate brings up to 100%
Table 7: typical high-frequency induction brazing soldering result contrast (A.C. contactor contact bridge)-weld is accepted rate brings up to 100%
Embodiment 3
The ac contactor contact high frequency brazing
According to the above model of embodiment 1 contact bridge of following A.C. contactor and contact being carried out welding procedure and high-frequency induction brazing connects fruit and adds up:
Specification 3:
U type contact bridge: silver contact 18mm * 13mm * 1.7mm;
T3, Y4 contact plate 18mm * 55mm * 18mm * 5;
Solder Bag30CuZn sheet: 0.2mm * 13mm * 18mm * R15,
Brazing flux FB303P cream dress, all faces all apply before the welding;
Magnetic rings diameter:
pressure: 0.2Mpa; Series connection high frequency coil:
Silver contact and contact plate assembly welding weight: 0.098kg;
Theoretical power demand: 8.1746-9.555KW; Actual power demand: 12.56-14.7KW,
Welding current 47-50A; Weld interval 18-23s; Insulation electric current 38-41A; Temperature retention time 50-60s;
Specification 4:
U type contact bridge: silver contact 22mm * 17mm * 2.5mm;
T3, Y4 contact plate 18mm * 55mm * 23.5mm * 5;
Solder Bag30CuZn sheet: 0.2mm * 22mm * 17mm * R32; Brazing flux FB303P cream dress, all faces all apply before the welding;
Magnetic rings diameter:
pressure: 0.2Mpa; Series connection high frequency coil:
Silver contact and contact plate assembly welding weight: 0.107kg;
Theoretical power demand: 8.9-10.43KW; Actual power demand: 13.69-16KW;
Welding current 50-55A; Weld interval 24-27s; Insulation electric current 38-42A; Temperature retention time 96-100s;
Specification 3 all conforms to quality requirements through the check of 380,000 products, and it is bad to have eliminated the leakiness weld seam, improves sealing, weld strength and the electric conductivity of welded part, has prevented weld corrosion.The weld is accepted rate keeps 100%, and welding efficiency improves 260%.
The breaker of plastic casing high frequency brazing of silver-bearing copper welding
According to example 1 above model the contact bridge of following A.C. contactor and contact being carried out welding procedure and high-frequency induction brazing connects really and adds up:
With reference to Fig. 5; Once simultaneously with 4 product welding fabrications; With four U type contact bridges (U type contact bridge a25, U type contact bridge b26, U type contact bridge c27, U type contact bridge d28) HFI welding moulding; Specifically be that brazing flux FB303P is coated on four silver contacts (silver contact a21, silver contact b22, silver contact c23, silver contact d24) of these four U type contact bridges and correspondence; These four U type contact bridges are placed on successively on the support member (support member a 29, support member b 30, support member c 31, support member d 32) of four corresponding devices; On these four U type contact bridges, place BAg25CuZn silver soldering sheet respectively; Again four above-mentioned silver contacts are pressed in respectively on four silver soldering sheets; With four magnetic rings depression bars of supporting layout on above-mentioned four high frequency coils (high frequency coil c17, high frequency coil d18, high frequency coil e19, high frequency coil f20) horizontal direction under cylinder action, move to the silver contact weld and four magnetic rings depression bars are pressed on the corresponding silver contact, a welding fabrication of 4 products of realization under the high frequency electric effect.
Specification 5:U type contact bridge: silver contact 6mm * 3.5mm * 2.5mm;
T3, Y4 contact plate specification 8mm * 44mm * 3mm;
Solder Bag30CuZn sheet: 0.2mm * 6mm * 2.5mm * R10; Brazing flux FB303P cream dress, all faces all apply before the welding;
Magnetic rings diameter:
pressure: 0.2Mpa; Series connection high frequency coil:
Silver contact and contact plate assembly welding weight: 0.025kg;
Theoretical power demand: 2.08-2.44KW; Actual power demand: 3.2-3.75KW;
Welding current 35-37A; Weld interval 7-9s; Insulation electric current 33-36A; Temperature retention time 16-18s;
With reference to Fig. 6; Specification 6, once simultaneously with two groups of U type contact bridges (U type contact bridge e 34, U type contact bridge f 35) HFI welding moulding, the process of specification 6 is with embodiment 4 specifications 5; Or four high frequency coils (33,18,19,20); The specification that is not both two U type contact bridges (U type contact bridge e 34, U type contact bridge f 35) is 8mm * 88mm * 3mm, and single length 88 is 2 times among Fig. 5 embodiment, but quantity is among Fig. 5 embodiment half; Identical among gross weight and Fig. 5 embodiment, its heating process is slightly different.Welding current 32-35A is set in addition; Weld interval 6-8s; Insulation electric current 32-35A; Temperature retention time 20-30s.
The inventive method embodiment has realized once welding the welding of a plurality of parts and a plurality of solder joints, satisfies and enhances production capacities.Reduce equipment investment, stop heating product surface or coating are destroyed, make product have to increase new surface treatment procedure.According to formula and welding range of choice, obtain welding condition fast simultaneously, many-side reduces cost, and increases the performance of enterprises.
Claims (9)
1. the high-frequency induction brazing welding method of a metallic element; Can once accomplish the high frequency brazing assembling moulding of the many solder joints of many weldments, it is characterized in that this method relies on a kind of device; The structure of this device comprises high frequency coil and magnetic rings depression bar two parts; This high frequency coil and magnetic rings depression bar two parts all are connected with high frequency controller, accept the unified control of high frequency controller
The structure of high frequency coil is; The copper pipe along continuous straight runs of a water flowing is turned to the high frequency coil of a plurality of openings; The high frequency coil head and the tail of each opening connect successively, and cooling water is from first high frequency coil one end water inlet, and backwater constitutes cooling circuit behind last high frequency coil of always flowing through;
The structure of magnetic rings depression bar part is; Correspondence is provided with magnetic rings respectively above each high frequency coil axle center; Each magnetic rings potsherd through separately respectively is installed on the copper tube lower end separately; Be communicated with water inlet pipe respectively on every copper tube of potsherd, the upper end of each copper tube is connected with slide bar (11) through adjusting lever (10), and slide bar (11) upwards is connected with cylinder (12); Cylinder (12) is connected with PLC, and the control of accepting PLC moves up and down,
The inventive method is utilized above-mentioned device, implements according to following steps:
The processing on step 1, weld parts surface: degrease, remove excessive oxide skin;
The assembling of step 2, welder, arrange a high frequency coil and a magnetic depression bar:
Make that being provided with of high frequency coil is satisfied: a plurality of high frequency coils that current direction is consistent, vertical direction at least 1 is enclosed between the copper pipe at that diameter matches with the weld parts heating part, high frequency coil induction position or equidistance parallel with the heating surface of weld parts, adjacent turn;
In addition; The magnetic rings depression bar of a plurality of correspondences is arranged in a plurality of high frequency coils top of along continuous straight runs series connection coiling; The axis centre of each magnetic rings depression bar and the central vertical of corresponding a plurality of coils; The weld parts of prepackage is placed in the anchor clamps, each coil coil is adjusted to and part welding position equal-height position;
Step 3,, firmness requirement height high according to the electric conductivity requirement select silver-base solder and welded part to mate; Perhaps,, firmness not high according to electric conductivity requires high, selects copper phosphorus pricker solder and welded part coupling;
Be equipped with paste brazing flux FB303P simultaneously;
Step 4, configuration solder and brazing flux position: place the solder of coupling at the face that is welded to connect, at welded part surface-coated paste brazing flux FB303P;
Step 5, corresponding frequency of utilization is set, calculates according to following formula through high frequency controller, and output welding current, weld interval, insulation electric current and temperature retention time control numerical value:
current unit is A; Unit of weight is Kg; Chronomere is second
The insulation electric current calculates to be pressed: the A of insulation electric current=welding current/(1.3-1.56),
Temperature retention time is calculated and is pressed: temperature retention time=weld interval * (1.5-5);
Step 6, according to the technological parameter that above-mentioned steps provides, weld parts is placed high frequency coil, weld parts is put into anchor clamps pushes down with a magnetic depression bar, high frequency coil is heated, insulation back outage passes to cooling water and carries out cool to room temperature.
2. the high-frequency induction brazing welding method of metallic element according to claim 1; It is characterized in that: the structure of said high frequency coil is; The copper pipe along continuous straight runs of a water flowing is turned to high frequency coil a (1) and high frequency coil b (2); Two high frequency coil head and the tail connect successively, and cooling water is from the water inlet of high frequency coil a (1) one end, and high frequency coil b (2) the back backwater of always flowing through constitutes cooling circuit;
The structure of said magnetic rings depression bar part is; Correspondence is provided with magnetic rings a (3) and magnetic rings b (4) respectively above high frequency coil a (1) and high frequency coil b (2) axle center; Magnetic rings a (3) and magnetic rings b (4) potsherd (6) and the screw (5) through separately respectively are installed on two copper tube lower ends; The material of potsherd (6) is resistant to elevated temperatures insulating materials, is communicated with water inlet pipe a (8) and water inlet pipe b (9) on two copper tubes respectively, is communicated with return pipe (7) between two copper tubes; The upper end of copper tube is connected with slide bar (11) through adjusting lever (10), and slide bar (11) upwards is connected with cylinder (12); Cylinder (12) is connected with PLC, and the control of accepting PLC moves up and down.
3. the high-frequency induction brazing welding method of metallic element according to claim 1 and 2, it is characterized in that: the diameter of said high frequency coil is big more, and the number of turn is few more;
Perhaps, need welding power big more, the number of turn is few more;
Perhaps, thermal conductivity or electric conductivity are good more, and the number of turn is many more;
Perhaps, power is big more, and frequency is big more;
Perhaps, bonding power is big more, and the high frequency coil quantity that level is moved towards series connection is just many more.
4. the high-frequency induction brazing welding method of metallic element according to claim 1 and 2, it is characterized in that: the head of said high frequency coil is selected the annealing copper tube of the thick diameter 3-7mm of 1mm for use;
Perhaps, the head of high frequency coil selects for use wall thickness to be not less than the annealing copper tube of the diameter 5-10mm of 1mm;
The resistant to elevated temperatures insulating materials of coiling between the adjacent turn;
Two exit copper pipe external diameter 5-15mm, length are not less than 1.2 times of the diameters of coil.
5. the high-frequency induction brazing welding method of metallic element according to claim 1 is characterized in that: in the said step 5, the weldment power demand confirm be,
Select the required theoretical power (horse-power) of welding according to product:
Power (KW)=weldment weight (Kg) * temperature (℃) * specific heat capacity { J/ (kg) ℃ }/3600 (seconds), that is:
Select the required actual power of welding according to product:
Power (KW)=weldment weight (Kg) * temperature (℃) * specific heat capacity { J/ (kg) ℃ }/3600 (seconds)/(1-k), that is:
6. high-frequency induction brazing welder that is used for metallic element, it is characterized in that: comprise high frequency coil and magnetic rings depression bar two parts, this high frequency coil and magnetic rings depression bar two parts all are connected with high frequency controller, accept the unified control of high frequency controller,
The structure of high frequency coil is; The copper pipe along continuous straight runs of a water flowing is turned to the high frequency coil of a plurality of openings; The high frequency coil head and the tail of each opening connect successively, and cooling water is from first high frequency coil one end water inlet, and backwater constitutes cooling circuit behind last high frequency coil of always flowing through;
The structure of magnetic rings depression bar part is; Correspondence is provided with magnetic rings respectively above each high frequency coil axle center; Each magnetic rings potsherd through separately respectively is installed on the copper tube lower end separately; Be communicated with water inlet pipe respectively on every copper tube of potsherd, the upper end of each copper tube is connected with slide bar (11) through adjusting lever (10), and slide bar (11) upwards is connected with cylinder (12); Cylinder (12) is connected with PLC, and the control of accepting PLC moves up and down.
7. high-frequency induction brazing welder according to claim 6; It is characterized in that: the structure of described high frequency coil is; The copper pipe along continuous straight runs of a water flowing is turned to high frequency coil a (1) and high frequency coil b (2); Two high frequency coil head and the tail connect successively, and cooling water is from the water inlet of high frequency coil a (1) one end, and high frequency coil b (2) the back backwater of always flowing through constitutes cooling circuit;
The structure of said magnetic rings depression bar part is; Correspondence is provided with magnetic rings a (3) and magnetic rings b (4) respectively above high frequency coil a (1) and high frequency coil b (2) axle center; Magnetic rings a (3) and magnetic rings b (4) potsherd (6) and the screw (5) through separately respectively are installed on two copper tube lower ends; The material of potsherd (6) is resistant to elevated temperatures insulating materials, is communicated with water inlet pipe a (8) and water inlet pipe b (9) on two copper tubes respectively, is communicated with return pipe (7) between two copper tubes; The upper end of copper tube is connected with slide bar (11) through adjusting lever (10), and slide bar (11) upwards is connected with cylinder (12); Cylinder (12) is connected with PLC, and the control of accepting PLC moves up and down.
8. high-frequency induction brazing welder according to claim 6 is characterized in that: the diameter of said high frequency coil is big more, and the number of turn is few more;
Perhaps, need welding power big more, the number of turn is few more;
Perhaps, thermal conductivity or electric conductivity are good more, and the number of turn is many more;
Perhaps, power is big more, and frequency is big more;
Perhaps, bonding power is big more, and the high frequency coil quantity that level is moved towards series connection is just many more.
9. high-frequency induction brazing welding method according to claim 6; It is characterized in that: the head of said high frequency coil is selected the annealing copper tube of the thick diameter 3-7mm of 1mm for use; Perhaps, the head of high frequency coil selects for use wall thickness to be not less than the annealing copper tube of the diameter 5-10mm of 1mm;
The resistant to elevated temperatures insulating materials of coiling between the adjacent turn; Two exit copper pipe external diameter 5-15mm, length are not less than 1.2 times of the diameters of coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110318708.8A CN102357695B (en) | 2011-10-19 | 2011-10-19 | Method and device for soldering metal parts and components by adopting high-frequency induction brazing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110318708.8A CN102357695B (en) | 2011-10-19 | 2011-10-19 | Method and device for soldering metal parts and components by adopting high-frequency induction brazing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102357695A true CN102357695A (en) | 2012-02-22 |
| CN102357695B CN102357695B (en) | 2014-01-29 |
Family
ID=45583107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110318708.8A Active CN102357695B (en) | 2011-10-19 | 2011-10-19 | Method and device for soldering metal parts and components by adopting high-frequency induction brazing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102357695B (en) |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784986A (en) * | 2012-08-31 | 2012-11-21 | 郑州机械研究所 | Induction brazing temperature field control method with selective wetting effect |
| CN102909449A (en) * | 2012-09-28 | 2013-02-06 | 黄一淼 | Induction brazing welding method for metal part |
| CN102983478A (en) * | 2012-11-30 | 2013-03-20 | 上海电气电站设备有限公司 | Soldering quality control method of large-section copper strand wire of turbonator |
| CN103143809A (en) * | 2013-03-21 | 2013-06-12 | 光驰科技(上海)有限公司 | Method for simultaneously welding multiple welding-seams and auxiliary welding tool |
| CN103682941A (en) * | 2012-09-24 | 2014-03-26 | 同协电子股份有限公司 | Connector soldering machine |
| CN103817425A (en) * | 2014-01-29 | 2014-05-28 | 浙江省医疗器械研究所 | Silver welding process capable of welding small metal members under protection of hydrogen-nitrogen mixed gas |
| CN103862130A (en) * | 2014-03-17 | 2014-06-18 | 珠海格力电器股份有限公司 | Induction heater, manufacturing method and welding machine |
| CN104284749A (en) * | 2012-04-25 | 2015-01-14 | 欧利生电气株式会社 | Soldering apparatus and method for manufacturing soldered product |
| CN105364248A (en) * | 2014-08-30 | 2016-03-02 | 姬志强 | PLC control device of high frequency brazing machine |
| CN105706007A (en) * | 2013-11-04 | 2016-06-22 | 伊利诺斯工具制品有限公司 | System and method for selecting weld parameters |
| CN105728878A (en) * | 2016-04-27 | 2016-07-06 | 昆山星锐普思电子科技有限公司 | Vacuum heating brazing equipment on basis of intermediate-frequency power eddy current magnetic fields |
| CN106334869A (en) * | 2016-11-25 | 2017-01-18 | 苏州铜盟电气有限公司 | High-frequency Welding Device for Copper Products |
| CN107445460A (en) * | 2017-09-26 | 2017-12-08 | 深圳市创智自动化有限公司 | Glass bending former |
| CN107717163A (en) * | 2017-10-17 | 2018-02-23 | 珠海格力电器股份有限公司 | Welding head device, induction brazing system and welding method thereof |
| CN108856948A (en) * | 2018-09-21 | 2018-11-23 | 安徽机电职业技术学院 | A kind of irregular part induction brazing device |
| CN109013934A (en) * | 2018-06-13 | 2018-12-18 | 武汉金丰汽配有限公司 | A kind of pipe fitting pipe expanding device and its method of expanding |
| CN110605472A (en) * | 2019-07-25 | 2019-12-24 | 广东顺德三合工业自动化设备股份有限公司 | High-frequency welding equipment for wiring of motor stator winding |
| CN112388140A (en) * | 2020-11-09 | 2021-02-23 | 保定保菱变压器有限公司 | Be applied to SF6Welding method for position correction of full-entanglement winding of gas-insulated transformer |
| CN114054924A (en) * | 2021-12-17 | 2022-02-18 | 四川攀钢嘉德精工科技有限公司 | Welding process for Q-shaped auxiliary frame longitudinal beam for heavy-duty automobile |
| TWI759460B (en) * | 2017-04-14 | 2022-04-01 | 美商伊利諾工具工程公司 | A device for preventing dripping of solder paste |
| CN115090982A (en) * | 2022-07-01 | 2022-09-23 | 浙江福达合金材料科技有限公司 | Welding device and method for plastic case circuit breaker static contact assembly |
| CN115229321A (en) * | 2022-06-15 | 2022-10-25 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Welding method of water channel part for water cooling device |
| CN115255533A (en) * | 2022-08-31 | 2022-11-01 | 重庆红江机械有限责任公司 | Pretreatment method and cleaning method for brazing heat treatment of inner container of cyclone |
| CN115889918A (en) * | 2022-12-23 | 2023-04-04 | 郑州机械研究所有限公司 | A kind of brazing method of PDC pick and PDC pick |
| CN118848190A (en) * | 2024-09-25 | 2024-10-29 | 江苏宏亿精工股份有限公司 | A high frequency welding device and welding method suitable for welding thick-walled pipe fittings |
| US12168269B2 (en) | 2021-01-15 | 2024-12-17 | Illinois Tool Works Inc. | Systems and methods to select weld parameters based on thermal, electrical, and/or chemical properties |
| US12202082B2 (en) | 2017-11-16 | 2025-01-21 | Illinois Tool Works Inc. | Automatic process and/or set up of welding type system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243777A (en) * | 1999-01-30 | 2000-02-09 | 深圳市宝安联华实业有限公司 | High-frequency heating and pressurizing technology and equipment for soldering ring and planar parts made of different metals |
| CN201064847Y (en) * | 2007-08-07 | 2008-05-28 | 天津市机电工业控股集团公司 | Special-purpose high frequency induced brazing machine for heavy current electrode contactor bridge-shape contact |
| WO2010015760A1 (en) * | 2008-08-08 | 2010-02-11 | Renault S.A.S. | Control device and method for varying the separation of pieces during backside induction brazing |
| WO2010120836A1 (en) * | 2009-04-16 | 2010-10-21 | Us Synthetic Corporation | Brazing method and apparatus therefor using induction heating |
-
2011
- 2011-10-19 CN CN201110318708.8A patent/CN102357695B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243777A (en) * | 1999-01-30 | 2000-02-09 | 深圳市宝安联华实业有限公司 | High-frequency heating and pressurizing technology and equipment for soldering ring and planar parts made of different metals |
| CN201064847Y (en) * | 2007-08-07 | 2008-05-28 | 天津市机电工业控股集团公司 | Special-purpose high frequency induced brazing machine for heavy current electrode contactor bridge-shape contact |
| WO2010015760A1 (en) * | 2008-08-08 | 2010-02-11 | Renault S.A.S. | Control device and method for varying the separation of pieces during backside induction brazing |
| WO2010120836A1 (en) * | 2009-04-16 | 2010-10-21 | Us Synthetic Corporation | Brazing method and apparatus therefor using induction heating |
Cited By (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104284749B (en) * | 2012-04-25 | 2016-09-21 | 欧利生电气株式会社 | Welder and the manufacture method of welded articles |
| CN104284749A (en) * | 2012-04-25 | 2015-01-14 | 欧利生电气株式会社 | Soldering apparatus and method for manufacturing soldered product |
| CN102784986A (en) * | 2012-08-31 | 2012-11-21 | 郑州机械研究所 | Induction brazing temperature field control method with selective wetting effect |
| CN102784986B (en) * | 2012-08-31 | 2015-03-04 | 郑州机械研究所 | Induction brazing temperature field control method with selective wetting effect |
| CN103682941A (en) * | 2012-09-24 | 2014-03-26 | 同协电子股份有限公司 | Connector soldering machine |
| CN102909449A (en) * | 2012-09-28 | 2013-02-06 | 黄一淼 | Induction brazing welding method for metal part |
| CN102909449B (en) * | 2012-09-28 | 2015-04-01 | 浙江正泰电器股份有限公司 | Induction soldering and brazing method for metal part |
| CN102983478B (en) * | 2012-11-30 | 2014-12-10 | 上海电气电站设备有限公司 | Soldering quality control method of large-section copper strand wire of turbonator |
| CN102983478A (en) * | 2012-11-30 | 2013-03-20 | 上海电气电站设备有限公司 | Soldering quality control method of large-section copper strand wire of turbonator |
| CN103143809B (en) * | 2013-03-21 | 2016-03-09 | 光驰科技(上海)有限公司 | A kind of method and welding aid simultaneously welding many weld seams |
| CN103143809A (en) * | 2013-03-21 | 2013-06-12 | 光驰科技(上海)有限公司 | Method for simultaneously welding multiple welding-seams and auxiliary welding tool |
| CN105706007A (en) * | 2013-11-04 | 2016-06-22 | 伊利诺斯工具制品有限公司 | System and method for selecting weld parameters |
| CN103817425A (en) * | 2014-01-29 | 2014-05-28 | 浙江省医疗器械研究所 | Silver welding process capable of welding small metal members under protection of hydrogen-nitrogen mixed gas |
| CN103817425B (en) * | 2014-01-29 | 2017-01-18 | 浙江省医疗器械研究所 | Silver welding process capable of welding small metal members under protection of hydrogen-nitrogen mixed gas |
| CN103862130B (en) * | 2014-03-17 | 2016-06-15 | 珠海格力电器股份有限公司 | Induction heater, manufacturing method and welding machine |
| CN103862130A (en) * | 2014-03-17 | 2014-06-18 | 珠海格力电器股份有限公司 | Induction heater, manufacturing method and welding machine |
| CN105364248A (en) * | 2014-08-30 | 2016-03-02 | 姬志强 | PLC control device of high frequency brazing machine |
| CN105728878A (en) * | 2016-04-27 | 2016-07-06 | 昆山星锐普思电子科技有限公司 | Vacuum heating brazing equipment on basis of intermediate-frequency power eddy current magnetic fields |
| CN106334869A (en) * | 2016-11-25 | 2017-01-18 | 苏州铜盟电气有限公司 | High-frequency Welding Device for Copper Products |
| TWI759460B (en) * | 2017-04-14 | 2022-04-01 | 美商伊利諾工具工程公司 | A device for preventing dripping of solder paste |
| CN107445460A (en) * | 2017-09-26 | 2017-12-08 | 深圳市创智自动化有限公司 | Glass bending former |
| CN107717163A (en) * | 2017-10-17 | 2018-02-23 | 珠海格力电器股份有限公司 | Welding head device, induction brazing system and welding method thereof |
| US12202082B2 (en) | 2017-11-16 | 2025-01-21 | Illinois Tool Works Inc. | Automatic process and/or set up of welding type system |
| CN109013934A (en) * | 2018-06-13 | 2018-12-18 | 武汉金丰汽配有限公司 | A kind of pipe fitting pipe expanding device and its method of expanding |
| CN108856948A (en) * | 2018-09-21 | 2018-11-23 | 安徽机电职业技术学院 | A kind of irregular part induction brazing device |
| CN110605472A (en) * | 2019-07-25 | 2019-12-24 | 广东顺德三合工业自动化设备股份有限公司 | High-frequency welding equipment for wiring of motor stator winding |
| CN112388140A (en) * | 2020-11-09 | 2021-02-23 | 保定保菱变压器有限公司 | Be applied to SF6Welding method for position correction of full-entanglement winding of gas-insulated transformer |
| US12168269B2 (en) | 2021-01-15 | 2024-12-17 | Illinois Tool Works Inc. | Systems and methods to select weld parameters based on thermal, electrical, and/or chemical properties |
| CN114054924A (en) * | 2021-12-17 | 2022-02-18 | 四川攀钢嘉德精工科技有限公司 | Welding process for Q-shaped auxiliary frame longitudinal beam for heavy-duty automobile |
| CN115229321A (en) * | 2022-06-15 | 2022-10-25 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Welding method of water channel part for water cooling device |
| CN115090982A (en) * | 2022-07-01 | 2022-09-23 | 浙江福达合金材料科技有限公司 | Welding device and method for plastic case circuit breaker static contact assembly |
| CN115090982B (en) * | 2022-07-01 | 2023-07-21 | 浙江福达合金材料科技有限公司 | Welding device and method for fixed contact assembly of molded case circuit breaker |
| CN115255533B (en) * | 2022-08-31 | 2023-12-29 | 重庆红江机械有限责任公司 | Pretreatment method and cleaning method for brazing heat treatment of cyclone liner |
| CN115255533A (en) * | 2022-08-31 | 2022-11-01 | 重庆红江机械有限责任公司 | Pretreatment method and cleaning method for brazing heat treatment of inner container of cyclone |
| CN115889918B (en) * | 2022-12-23 | 2024-03-08 | 郑州机械研究所有限公司 | Brazing method of PDC cutting pick and PDC cutting pick |
| CN115889918A (en) * | 2022-12-23 | 2023-04-04 | 郑州机械研究所有限公司 | A kind of brazing method of PDC pick and PDC pick |
| CN118848190A (en) * | 2024-09-25 | 2024-10-29 | 江苏宏亿精工股份有限公司 | A high frequency welding device and welding method suitable for welding thick-walled pipe fittings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102357695B (en) | 2014-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102357695B (en) | Method and device for soldering metal parts and components by adopting high-frequency induction brazing | |
| CN101284339B (en) | Welding wire and method for welding the aluminum and aluminum alloy and steel | |
| CN106425100B (en) | Bilateral laser titanium steel composite board complete penetraction and fusion in welding welding method based on transition zone control | |
| CN101468419B (en) | Induction and electrical arc composite heat source stud welding method | |
| CN104191081B (en) | Device and its welding method for copper pipe in refrigeration equipment and Al pipe butt welding | |
| CN103447668B (en) | A kind of welding method of dispersion copper | |
| CN105108272B (en) | A kind of method and apparatus of different-metal material welding | |
| CN103223547B (en) | Dual-hot wire system and welding method for aluminum/steel dissimilar metal TIG (Tungsten Inert Gas) arc fused braze welding | |
| CN206732355U (en) | Electromagnetic pulse welder | |
| CN102909449A (en) | Induction brazing welding method for metal part | |
| CN109317794A (en) | A powder-filled plasma welding method for titanium alloy and stainless steel | |
| CN108296584B (en) | Titanium-steel plate butt joint double-heat-source low-heat-input brazing method | |
| CN109202243B (en) | Intermediate layer alloy for tantalum/stainless steel energy storage welding and preparation method and welding method thereof | |
| CN204094301U (en) | Copper pipe and device for welding aluminium pipe plumb joint in refrigeration plant | |
| CN105364314A (en) | Welding method for obtaining amorphous connector for FeSiB amorphous strip | |
| CN100361774C (en) | Joint Strengthening Method for Controlling the Interface Structure of Copper Alloy and Steel Butt Welding Joints | |
| CN109202244B (en) | Intermediate layer alloy applied to resistance spot welding tantalum Ta1 and Q235 steel and preparation method thereof | |
| CN204094300U (en) | For the device of copper pipe in refrigeration plant and Al pipe butt welding | |
| CN103846541A (en) | Metal liquid-solid interface thermal extrusion welding method | |
| CN115351446B (en) | Ultrasonic-assisted and nanoparticle-coupled reinforced aluminum/copper dissimilar metal plasma arc welding method | |
| CN1161204C (en) | Double core electrode and single arc welding process | |
| CN201373702Y (en) | Welding product with high melting point metal enamel coating and low melting point metal surface layer | |
| CN113134693A (en) | Cu-based amorphous solder for brazing tungsten-based powder alloy and preparation method and application thereof | |
| KR101204884B1 (en) | method for welding aluminum alloy use moving high-frequency coil | |
| CN214395739U (en) | A Preset Structure Facilitating Aluminum Copper Welding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHENGTAI ELECTRIC APPLIANCE CO., LTD., ZHEJIANG Free format text: FORMER OWNER: HUANG YIMIAO Effective date: 20140812 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710021 XIANYANG, SHAANXI PROVINCE TO: 325603 WENZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140812 Address after: CHINT CHINT Industrial Park in Yueqing city of Zhejiang Province, the 325603 white elephant town No. 1 Patentee after: Zhengtai Electric Appliance Co., Ltd., Zhejiang Address before: 710021 Xianyang city of Shaanxi province qindouou Weiyang Road No. 53 South Rainbow District 1 unit 2 floor of No. 4 East households Patentee before: Huang Yimiao |