CN106623580B - A kind of hot extrusion and the method for expansive forming composite manufacturing bathroom faucet branch pipe - Google Patents
A kind of hot extrusion and the method for expansive forming composite manufacturing bathroom faucet branch pipe Download PDFInfo
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- CN106623580B CN106623580B CN201710016273.9A CN201710016273A CN106623580B CN 106623580 B CN106623580 B CN 106623580B CN 201710016273 A CN201710016273 A CN 201710016273A CN 106623580 B CN106623580 B CN 106623580B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/037—Forming branched tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/047—Mould construction
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A kind of hot extrusion and the method for expansive forming composite manufacturing bathroom faucet branch pipe, it is related to a kind of manufacturing method of bathroom faucet branch pipe.The purpose of the present invention is to solve it is existing using copper alloy, allumen as the bathroom faucet cast form of material in there are high energy consumption, it is gentle useless to be also easy to produce sand mold solid waste, while also there are problems that appearance fine structure forming difficulty.Method：First, machine cuts；2nd, it is heat-treated；3rd, mold is heated up and pressed；4th, pressure head applies pressure to the left and right；5th, left and right ram pressures are reduced；6th, mold temperature is raised, gas is passed through into pipe；7th, molded part is taken out, oxide film dissolving is removed, obtains hot extrusion and expansive forming composite manufacturing bathroom faucet branch pipe.The present invention solves the problems, such as single superplastic forming excessive thinning, and solves the problems, such as that single hot extrusion can not shape external fine structure, is a kind of brand-new green manufacture technology.The present invention can obtain bathroom faucet branch pipe.
Description
Technical field
The present invention relates to a kind of manufacturing methods of bathroom faucet branch pipe.
Background technology
At present, bathroom faucet material includes allumen, copper alloy, cast iron etc., wherein with allumen and copper alloy
Frequency of use higher, titanium alloy also have potential due to its excellent corrosion-resistant and biocompatibility on bathroom faucet
Advantage.However, the bathroom faucet manufacturing process of Yi Shang material depends on casting, it is known that bathroom faucet casting
Flow is complicated, and technical process is more, and main technical process includes pressure wax, sand mold is manufactured, poured into a mould, goes cast gate, shake shell, polishing etc.,
Complex procedures often lead to higher defect rate, and the component higher to appearance flatness requirement is especially prominent, in addition casting process
Sand solid waste can be generated and gas gives up, so being badly in need of seeking a kind of brand-new manufacturing technology to replace or make up conventional cast skill
Art.
The content of the invention
The purpose of the present invention is to solve it is existing using copper alloy, allumen as material bathroom faucet cast form
In there are high energy consumption, it is gentle useless to be also easy to produce sand mold solid waste, while also there are problems that appearance fine structure forming difficulty, and provides
A kind of hot extrusion and the method for expansive forming composite manufacturing bathroom faucet branch pipe.
A kind of hot extrusion and the method for expansive forming composite manufacturing bathroom faucet branch pipe, are specifically realized by the following steps
's：
First, machine cuts：Tubing will be squeezed to be cut out, the extruding tubing cut out；
2nd, it is heat-treated：The outer surface of extruding tubing to cutting out sprays antioxidant；Outer surface is coated with again anti-oxidation
The extruding tubing of agent, which is placed in the Muffle furnace that temperature is 200 DEG C~800 DEG C, is heat-treated 1h~6h, then furnace cooling, obtains hot place
Pipe after reason；
3rd, install a mold into first on superplastic forming machine, then by the pipe after heat treatment be placed in upper die and lower die it
Between cylindrical cavity in, then by left pressure head and right pressure head be placed in cylindrical cavity be heat-treated after pipe both sides；By mold
Temperature be warming up to 300 DEG C~800 DEG C, applied by the hydraulic cylinder of superplastic forming machine to the upper mold that temperature is 300 DEG C~800 DEG C
Constant pressure is constant to keep the relative position of upper die and lower die；
Application pressure described in step 3 is 11MPa~20MPa；
4th, by being passed through gas in the pipe after the air inlet pipe heat treated of right pressure head, make in the pipe after heat treatment
Gas pressure is controlled in 2MPa~30MPa, then the gas pressure in pipe after heat treatment is 2MPa~30MPa and mold temperature
It spends for pressure head and right pressure head apply identical lateral pressure to the left respectively under conditions of 300 DEG C~800 DEG C；
Lateral pressure described in step 4 is 20MPa~30MPa, and the velocity of displacement of left pressure head and right pressure head is 1mm/s
~20mm/s；
5th, when the pipe after heat treatment is full of blind hole, the lateral pressure of left pressure head and right pressure head, lateral pressure drop are reduced
The velocity of displacement of extremely the 60%~80% of original pressure, left pressure head and right pressure head is down to 0mm/s, then stops the pipe after heat treated
Gas is passed through in base；
6th, the temperature of mold is increased to 400 DEG C~950 DEG C, then passes through the right side in the case where mold temperature is 400 DEG C~950 DEG C
Gas is passed through in pipe after the air inlet pipe heat treated of pressure head, the gas pressure in the pipe after heat treatment is made to control in 1MPa
~8MPa, and heat-insulation pressure keeping 5min~10min；
7th, molded part is taken out, then the oxide-film of surface of shaped parts is removed by abrasive band, obtains bathroom faucet branch pipe.
The principle of the present invention and advantage：
First, a kind of hot extrusion proposed by the invention and the method for expansive forming composite manufacturing bathroom faucet branch pipe, it is former
Material is technique tubing, and forming process can significantly reduce energy consumption without metal melt, while will not generate cast gate, running channel etc., carry
The high utilization rate of material；In addition forming technology link is reduced to two, i.e. hot extrusion and expansive forming can effectively ensure that product
Hot extrusion is combined by yields with superplastic forming, that is, solves the problems, such as single superplastic forming excessive thinning, and solve single
Hot extrusion can not shape the problem of external fine structure, be a kind of brand-new green manufacture technology；
2nd, the present invention solve it is existing using copper alloy, allumen as the bathroom faucet cast form of material in exist
High energy consumption, it is gentle useless to be also easy to produce sand mold solid waste, while also there are problems that appearance fine structure forming difficulty.
The present invention can obtain bathroom faucet branch pipe.
Description of the drawings
Fig. 1 is the structure diagram of the mold described in specific embodiment one；
Fig. 2 is the B-B direction sectional view of Fig. 1；
Fig. 3 is the sectional view along A-A of Fig. 1；
Fig. 4 is the D-D of Fig. 1 to sectional view；
Fig. 5 shows to be passed through the process of gas in the pipe after the heat treated described in step 4 in specific embodiment one
It is intended to；
Fig. 6 is the forming process schematic diagram described in step 6 in specific embodiment one.
Specific embodiment
Specific embodiment one：Present embodiment is a kind of hot extrusion and expansive forming composite manufacturing bathroom faucet branch pipe
Method, be specifically realized by the following steps：
First, machine cuts：Tubing will be squeezed to be cut out, the extruding tubing cut out；
2nd, it is heat-treated：The outer surface of extruding tubing to cutting out sprays antioxidant；Outer surface is coated with again anti-oxidation
The extruding tubing of agent, which is placed in the Muffle furnace that temperature is 200 DEG C~800 DEG C, is heat-treated 1h~6h, then furnace cooling, obtains hot place
Pipe after reason；
3rd, install a mold into first on superplastic forming machine, the pipe after heat treatment is then placed in upper mold 1 and lower die 2
Between cylindrical cavity in, then by left pressure head 3 and right pressure head 4 be placed in cylindrical cavity be heat-treated after pipe both sides；It will
The temperature of mold is warming up to 300 DEG C~800 DEG C, by the hydraulic cylinder of superplastic forming machine to the upper mold that temperature is 300 DEG C~800 DEG C
1 applies constant pressure to keep the relative position of upper mold 1 and lower die 2 constant；
Application pressure described in step 3 is 11MPa~20MPa；
4th, by being passed through gas in the pipe after the air inlet pipe heat treated of right pressure head 4, make in the pipe after heat treatment
Gas pressure is controlled in 2MPa~30MPa, then the gas pressure in pipe after heat treatment is 2MPa~30MPa and mold temperature
It spends for pressure head 3 and right pressure head 4 apply identical lateral pressure to the left respectively under conditions of 300 DEG C~800 DEG C；
Lateral pressure described in step 4 is 20MPa~30MPa, and the velocity of displacement of left pressure head 3 and right pressure head 4 is 1mm/
S~20mm/s；
5th, when the pipe after heat treatment is full of blind hole 7, the lateral pressure of left pressure head 3 and right pressure head 4 is reduced, it is lateral to press
Power is down to the 60%~80% of original pressure, and the velocity of displacement of left pressure head 3 and right pressure head 4 is down to 0mm/s, then stops heat treated
Gas is passed through in pipe afterwards；
6th, the temperature of mold is increased to 400 DEG C~950 DEG C, then passes through the right side in the case where mold temperature is 400 DEG C~950 DEG C
Gas is passed through in pipe after the air inlet pipe heat treated of pressure head 4, controls the gas pressure in the pipe after heat treatment
1MPa~8MPa, and heat-insulation pressure keeping 5min~10min；
7th, molded part is taken out, then the oxide-film of surface of shaped parts is removed by abrasive band, obtains bathroom faucet branch pipe.
The temperature of mold is warming up to 300 DEG C~800 DEG C in present embodiment step 3, is to reach the hot extrusion of pipe
Press temperature, the temperature of mold is warming up to 300 DEG C~350 DEG C when squeezing tubing and be allumen, when squeeze tubing for brass or
The temperature of mold is warming up to 350 DEG C~600 DEG C during red copper, when it is pure titanium or titanium alloy to squeeze tubing, the temperature heating of mold
To 500 DEG C~800 DEG C；
By being passed through gas in the pipe after the air inlet pipe heat treated of right pressure head 4 in present embodiment step 4, make heat
Gas pressure control in treated pipe is in 2MPa~30MPa, when pipe is allumen, the gas pressure in pipe
It controls in 2MPa~15MPa, when pipe is brass or red copper, the gas pressure in pipe is controlled in 5MPa~20MPa, works as pipe
When base is pure titanium or titanium alloy, the gas pressure in pipe is controlled in 10MPa~30MPa；
The temperature of mold is increased to 400 DEG C~950 DEG C in present embodiment step 6, is to reach the super modeling of pipe
Forming temperature, and then form on bathroom faucet branch pipe the purpose of the local fine structure of corner angle, picture on surface etc.；When pipe is
During allumen, the temperature of mold is increased to 400 DEG C~550 DEG C, and when pipe is brass or red copper, the temperature of mold is increased to
550 DEG C~800 DEG C, when pipe for pure titanium or titanium alloy constantly, the temperature of mold is increased to 800 DEG C~950 DEG C.
Fig. 1 is the structure diagram of the mold described in specific embodiment one, and 1 is upper mold in Fig. 1, and 2 be lower die, and 3 be a left side
Pressure head, 4 be right pressure head, and 5 be upper groove, and 6 be lower groove, and 7 be blind hole；
Fig. 2 is the B-B direction sectional view of Fig. 1, and 7 be blind hole in Fig. 2；
Fig. 3 is the sectional view along A-A of Fig. 1；
Fig. 4 is the D-D of Fig. 1 to sectional view；
Fig. 5 shows to be passed through the process of gas in the pipe after the heat treated described in step 4 in specific embodiment one
It is intended to, 7 be blind hole in Fig. 5, and 8 be the pipe after heat treatment；
Fig. 6 is the forming process schematic diagram described in step 6 in specific embodiment one, and 9 be bathroom faucet in Fig. 6
Branch pipe.
The principle and advantage of present embodiment：
First, a kind of hot extrusion that present embodiment is proposed and the side of expansive forming composite manufacturing bathroom faucet branch pipe
Method, raw material are technique tubing, and forming process can significantly reduce energy consumption, while will not generate cast gate, running channel without metal melt
Deng improving the utilization rate of material；In addition forming technology link is reduced to two, i.e. hot extrusion and expansive forming can be protected effectively
Product yield is demonstrate,proved, hot extrusion is combined with superplastic forming, that is, solves the problems, such as single superplastic forming excessive thinning, and solves
Single hot extrusion can not shape the problem of external fine structure, be a kind of brand-new green manufacture technology；
2nd, present embodiment solves existing using copper alloy, allumen as in the bathroom faucet cast form of material
There are high energy consumption, it is gentle useless to be also easy to produce sand mold solid waste, while also there are problems that appearance fine structure forming difficulty.
Present embodiment can obtain bathroom faucet branch pipe.
Specific embodiment two：Present embodiment is with one difference of specific embodiment：Mold described in step 3
Including upper mold 1, lower die 2, left pressure head 3 and right pressure head 4；1 lower surface of upper mold is provided with semicircle upper groove 5,5 side of opening of upper groove
To downward；The blind hole 7 vertical with 1 upper surface of upper mold is provided between the arcwall face of upper groove 5 and 1 upper surface of upper mold, blind hole 7
Opening direction is towards lower die 2；2 upper surface of lower die is provided with the lower groove 6 identical with 5 size of semicircle upper groove, lower groove 6
Opening direction is upward；Lower groove 6 is encircled into cylindrical cavity with upper groove 5；
The left pressure head 3 is cylinder；Right 4 left part of pressure head is cylinder, and right part is air inlet pipe；Right 4 left part of pressure head
The air admission hole that its center is provided through, air admission hole are connected with air inlet pipe；The left pressure head 3 and right pressure head 4 is placed in
In cylindrical cavity between upper mold 1 and lower die 2.Other steps are same as the specific embodiment one.
Specific embodiment three：Present embodiment is with one of specific embodiment one or two difference：Institute in step 2
The antioxidant stated is the zirconium oxide that the boron nitride aqueous solution that mass fraction is 5%~15% or mass fraction are 6%~20%
Aqueous solution.Other steps are the same as one or two specific embodiments.
Specific embodiment four：Present embodiment is with one of specific embodiment one to three difference：Institute in step 1
The extruding tubing stated is allumen, brass, red copper, pure titanium or titanium alloy.Other steps and specific embodiment one to three-phase
Together.
Specific embodiment five：Present embodiment is with one of specific embodiment one to four difference：The zinc-aluminium
Alloy is ZnAl22；The brass is H59 or H62；The titanium alloy is TA1, TA2, TC1 or TC4.Other steps and tool
Body embodiment one to four is identical.
Specific embodiment six：Present embodiment is with one of specific embodiment one to five difference：Institute in step 4
The gas stated is argon gas or nitrogen.Other steps are identical with specific embodiment one to five.
Specific embodiment seven：Present embodiment is with one of specific embodiment one to six difference：Institute in step 6
The gas stated is argon gas or nitrogen.Other steps are identical with specific embodiment one to six.
Specific embodiment eight：Present embodiment is with one of specific embodiment one to seven difference：It is right in step 2
The outer surface spraying antioxidant for the extruding tubing cut out；The extruding tubing that outer surface is coated with to antioxidant again is placed in temperature
To be heat-treated 3h~6h, then furnace cooling, the pipe after being heat-treated in 600 DEG C~800 DEG C of Muffle furnaces.Other steps with
Specific embodiment one to seven is identical.
Specific embodiment nine：Present embodiment is with one of specific embodiment one to eight difference：It will in step 6
The temperature of mold is increased to 550 DEG C~800 DEG C, then passes through the air inlet pipe of right pressure head 4 in the case where mold temperature is 550 DEG C~800 DEG C
Gas is passed through in pipe after heat treated, the gas pressure in the pipe after heat treatment is made to control in 4MPa~6MPa, and is protected
Warm pressurize 5min~10min.Other steps are identical with specific embodiment one to eight.
Specific embodiment ten：Present embodiment is with one of specific embodiment one to nine difference：In step 5 when
When pipe after heat treatment is full of blind hole 7, the lateral pressure of left pressure head 3 and right pressure head 4 is reduced, lateral pressure is down to original pressure
70%, the velocity of displacement of left pressure head 3 and right pressure head 4 is down to 0mm/s, then stops being passed through gas in the pipe after heat treated.
Other steps are identical with specific embodiment one to nine.
Specific embodiment 11：Present embodiment is with one of specific embodiment one to ten difference：In step 2
The outer surface of extruding tubing to cutting out sprays antioxidant；The extruding tubing that outer surface is coated with to antioxidant again is placed in temperature
It spends in the Muffle furnace for 260 DEG C and is heat-treated 2.5h, then furnace cooling, the pipe after being heat-treated.Other steps and specific reality
It is identical to apply mode one to ten.
Specific embodiment 12：Present embodiment is with one to one of 11 difference of specific embodiment：Step 3
Described in application pressure be 11MPa.Other steps are identical with specific embodiment one to 11.
Specific embodiment 13：Present embodiment is with one to one of 12 difference of specific embodiment：Step 4
Described in lateral pressure be 24MPa.Other steps are identical with specific embodiment one to 12.
Beneficial effects of the present invention are verified using following embodiment：
Embodiment one, a kind of method of hot extrusion and expansive forming composite manufacturing bathroom faucet branch pipe, specifically press with
What lower step was completed：
First, machine cuts：Tubing will be squeezed to be cut out, the extruding tubing cut out；
Extruding tubing described in step 1 is brass；The brass is H62；
2nd, it is heat-treated：The outer surface of extruding tubing to cutting out sprays antioxidant；Outer surface is coated with again anti-oxidation
The extruding tubing of agent is placed in the Muffle furnace that temperature is 550 DEG C and is heat-treated 3h, then furnace cooling, the pipe after being heat-treated；
Antioxidant described in step 2 is the oxidation aqueous zirconium that mass fraction is 10%；
3rd, install a mold into first on superplastic forming machine, the pipe after heat treatment is then placed in upper mold 1 and lower die 2
Between cylindrical cavity in, then by left pressure head 3 and right pressure head 4 be placed in cylindrical cavity be heat-treated after pipe both sides；It will
The temperature of mold is warming up to 600 DEG C, applies constant pressure to the upper mold 1 that temperature is 600 DEG C by the hydraulic cylinder of superplastic forming machine
To keep the relative position of upper mold 1 and lower die 2 constant；
Application pressure described in step 3 is 15MPa；
4th, by being passed through gas in the pipe after the air inlet pipe heat treated of right pressure head 4, make in the pipe after heat treatment
Gas pressure is controlled in 10MPa, then the gas pressure in pipe after heat treatment is 10MPa and mold temperature is 600 DEG C
Under the conditions of pressure head 3 and right pressure head 4 apply identical lateral pressure to the left respectively；
Lateral pressure described in step 4 is 25MPa, and the velocity of displacement of left pressure head 3 and right pressure head 4 is 10mm/s；
Gas described in step 4 is nitrogen；
5th, when the pipe after heat treatment is full of blind hole 7, the lateral pressure of left pressure head 3 and right pressure head 4 is reduced, it is lateral to press
Power is down to the 70% of original pressure, and the velocity of displacement of left pressure head 3 and right pressure head 4 is down to 0mm/s, then stops the pipe after heat treated
Gas is passed through in base；
6th, the temperature of mold is increased to 800 DEG C, then in the case where mold temperature is 800 DEG C by the air inlet pipe of right pressure head 4 to
Gas is passed through in pipe after heat treatment, the gas pressure in the pipe after heat treatment is made to control in 4MPa, and heat-insulation pressure keeping
10min；
Gas described in step 6 is nitrogen；
7th, molded part is taken out, then the oxide-film of surface of shaped parts is removed by abrasive band, obtains bathroom faucet branch pipe；
Mold described in step 3 includes upper mold 1, lower die 2, left pressure head 3 and right pressure head 4；1 lower surface of upper mold is provided with
Semicircle upper groove 5,5 opening direction of upper groove are downward；Fovea superior is provided between 1 upper surface of arcwall face and upper mold of upper groove 5
The vertical blind hole 7 of slot 5；2 upper surface of lower die is provided with the lower groove 6 identical with 5 size of semicircle upper groove, and lower groove 6 is opened
Mouth direction is upward；Lower groove 6 is encircled into cylindrical cavity with upper groove 5；The left pressure head 3 is cylinder；Right 4 left part of pressure head
For cylinder, right part is air inlet pipe；The air admission hole that its center of right 4 left part of pressure head is provided through, air admission hole and air inlet
Pipe is connected；The left pressure head 3 and right pressure head 4 is placed in the cylindrical cavity between upper mold 1 and lower die 2.
The advantages of embodiment one：
First, elongation percentage of material is big under superplastic state, and brass can be more than 300%, so more traditional bulging, bulging number
It can significantly reduce, usual 1 passage bulging can obtain required outer shape, cost reduction；
2nd, material resistance of deformation significantly reduces under superplastic state, therefore the limitation of product thickness is significantly reduced, while outer
The fine structures such as portion's corner angle are more easy to realize, product scope is widened.
3rd, superplastic forming internal pressure significantly reduces, therefore equipment mold clamping force, side potting strength are substantially reduced, big to shaping
Sized products advantage is more notable, and equipment investment reduces.
Embodiment two, a kind of method of hot extrusion and expansive forming composite manufacturing bathroom faucet branch pipe, specifically press with
What lower step was completed：
First, machine cuts：Tubing will be squeezed to be cut out, the extruding tubing cut out；
Extruding tubing described in step 1 is titanium alloy；The titanium alloy is TC4；
2nd, it is heat-treated：The outer surface of extruding tubing to cutting out sprays antioxidant；Outer surface is coated with again anti-oxidation
The extruding tubing of agent is placed in the Muffle furnace that temperature is 700 DEG C and is heat-treated 4h, then furnace cooling, the pipe after being heat-treated；
Antioxidant described in step 2 is the oxidation aqueous zirconium that mass fraction is 12%；
3rd, install a mold into first on superplastic forming machine, the pipe after heat treatment is then placed in upper mold 1 and lower die 2
Between cylindrical cavity in, then by left pressure head 3 and right pressure head 4 be placed in cylindrical cavity be heat-treated after pipe both sides；It will
The temperature of mold is warming up to 700 DEG C, applies constant pressure to the upper mold 1 that temperature is 700 DEG C by the hydraulic cylinder of superplastic forming machine
To keep the relative position of upper mold 1 and lower die 2 constant；
Application pressure described in step 3 is 19MPa；
4th, by being passed through gas in the pipe after the air inlet pipe heat treated of right pressure head 4, make in the pipe after heat treatment
Gas pressure is controlled in 20MPa, then the gas pressure in pipe after heat treatment is 20MPa and mold temperature is 700 DEG C
Under the conditions of pressure head 3 and right pressure head 4 apply identical lateral pressure to the left respectively；
Gas described in step 4 is nitrogen；
Lateral pressure described in step 4 is 30MPa, and the velocity of displacement of left pressure head 3 and right pressure head 4 is 20mm/s；
5th, when the pipe after heat treatment is full of blind hole 7, the lateral pressure of left pressure head 3 and right pressure head 4 is reduced, it is lateral to press
Power is down to the 75% of original pressure, and the velocity of displacement of left pressure head 3 and right pressure head 4 is down to 0mm/s, then stops the pipe after heat treated
Gas is passed through in base；
6th, the temperature of mold is increased to 920 DEG C, then in the case where mold temperature is 920 DEG C by the air inlet pipe of right pressure head 4 to
Gas is passed through in pipe after heat treatment, the gas pressure in the pipe after heat treatment is made to control in 6MPa, and heat-insulation pressure keeping
10min；
Gas described in step 6 is nitrogen；
7th, molded part is taken out, then the oxide-film of surface of shaped parts is removed by abrasive band, obtains bathroom faucet branch pipe；
Mold described in step 3 includes upper mold 1, lower die 2, left pressure head 3 and right pressure head 4；1 lower surface of upper mold is provided with
Semicircle upper groove 5,5 opening direction of upper groove are downward；Fovea superior is provided between 1 upper surface of arcwall face and upper mold of upper groove 5
The vertical blind hole 7 of slot 5；2 upper surface of lower die is provided with the lower groove 6 identical with 5 size of semicircle upper groove, and lower groove 6 is opened
Mouth direction is upward；Lower groove 6 is encircled into cylindrical cavity with upper groove 5；The left pressure head 3 is cylinder；Right 4 left part of pressure head
For cylinder, right part is air inlet pipe；The air admission hole that its center of right 4 left part of pressure head is provided through, air admission hole and air inlet
Pipe is connected；The left pressure head 3 and right pressure head 4 is placed in the cylindrical cavity between upper mold 1 and lower die 2.
The advantages of embodiment two：
First, elongation percentage of material is big under superplastic state, and titanium alloy can be more than 400%, so more traditional bulging, bulging
Number can significantly reduce, and usual 1 passage bulging can obtain required outer shape, cost reduction；
2nd, material resistance of deformation significantly reduces under superplastic state, therefore the limitation of product thickness is significantly reduced, while outer
The fine structures such as portion's corner angle are more easy to realize, product scope is widened.
3rd, superplastic forming internal pressure significantly reduces, therefore equipment mold clamping force, side potting strength are substantially reduced, big to shaping
Sized products advantage is more notable, and equipment investment reduces.
Claims (8)
1. a kind of method of hot extrusion and expansive forming composite manufacturing bathroom faucet branch pipe, it is characterised in that this method is specifically
It completes according to the following steps：
First, machine cuts：Tubing will be squeezed to be cut out, the extruding tubing cut out；
Extruding tubing described in step 1 is allumen, brass, red copper, pure titanium or titanium alloy pipe；
The allumen is ZnAl22；The brass is H59 or H62；The titanium alloy for TA1, TA2, TC1 or
TC4；
2nd, it is heat-treated：The outer surface of extruding tubing to cutting out sprays antioxidant；Outer surface is coated with antioxidant again
It squeezes tubing and is placed in heat treatment 1h~6h in the Muffle furnace that temperature is 200 DEG C~800 DEG C, then furnace cooling, after obtaining heat treatment
Pipe；
3rd, install a mold into first on superplastic forming machine, the pipe after heat treatment is then placed in upper mold (1) and lower die (2)
Between cylindrical cavity in, then by left pressure head (3) and right pressure head (4) be placed in cylindrical cavity be heat-treated after pipe two
Side；The temperature of mold is warming up to 300 DEG C~800 DEG C, by the hydraulic cylinder of superplastic forming machine to temperature be 300 DEG C~800 DEG C
Upper mold (1) apply constant pressure to keep the relative position of upper mold (1) and lower die (2) constant；
Application pressure described in step 3 is 11MPa~20MPa；
4th, by being passed through gas in the pipe after the air inlet pipe heat treated of right pressure head (4), the gas in the pipe after heat treatment is made
Body pressure is controlled in 2MPa~30MPa, then the gas pressure in pipe after heat treatment is 2MPa~30MPa and mold temperature
For pressure head (3) lateral pressure identical with right pressure head (4) application to the left respectively under conditions of 300 DEG C~800 DEG C；
Lateral pressure described in step 4 is 20MPa~30MPa, and the velocity of displacement of left pressure head (3) and right pressure head (4) is 1mm/
S~20mm/s；
5th, when the pipe after heat treatment is full of blind hole (7), the lateral pressure of left pressure head (3) and right pressure head (4) is reduced, laterally
Pressure is down to the 60%~80% of original pressure, and the velocity of displacement of left pressure head (3) and right pressure head (4) is down to 0mm/s, then stop to
Gas is passed through in pipe after heat treatment；
6th, the temperature of mold is increased to 400 DEG C~950 DEG C, then passes through right pressure head in the case where mold temperature is 400 DEG C~950 DEG C
(4) gas is passed through in the pipe after air inlet pipe heat treated, the gas pressure in the pipe after heat treatment is made to control in 1MPa
~8MPa, and heat-insulation pressure keeping 5min~10min；
7th, molded part is taken out, then the oxide-film of surface of shaped parts is removed by abrasive band, obtains bathroom faucet branch pipe.
2. a kind of hot extrusion according to claim 1 and the method for expansive forming composite manufacturing bathroom faucet branch pipe,
It is characterized in that the mold described in step 3 includes upper mold (1), lower die (2), left pressure head (3) and right pressure head (4)；Under upper mold (1)
Surface is provided with semicircle upper groove (5), and upper groove (5) opening direction is downward；On the arcwall face of upper groove (5) and upper mold (1)
It is provided with the blind hole (7) vertical with upper mold (1) upper surface between surface, the opening direction of blind hole (7) is towards lower die (2)；Lower die
(2) upper surface is provided with the lower groove (6) identical with semicircle upper groove (5) size, and the opening direction of lower groove (6) is upward；
Lower groove (6) is encircled into cylindrical cavity with upper groove (5)；
The left pressure head (3) is cylinder；Right pressure head (4) left part is cylinder, and right part is air inlet pipe；Right pressure head (4) left part
The air admission hole that is provided through of its center, air admission hole is connected with air inlet pipe；The left pressure head (3) and right pressure head
(4) it is placed in the cylindrical cavity between upper mold (1) and lower die (2).
3. a kind of hot extrusion according to claim 1 and the method for expansive forming composite manufacturing bathroom faucet branch pipe,
It is characterized in that the antioxidant described in step 2 is the boron nitride aqueous solution that mass fraction is 5%~15% or mass fraction is
6%~20% oxidation aqueous zirconium.
4. a kind of hot extrusion according to claim 1 and the method for expansive forming composite manufacturing bathroom faucet branch pipe,
It is argon gas or nitrogen to be characterized in that the gas described in step 4.
5. a kind of hot extrusion according to claim 1 and the method for expansive forming composite manufacturing bathroom faucet branch pipe,
It is argon gas or nitrogen to be characterized in that the gas described in step 6.
6. a kind of hot extrusion according to claim 1 and the method for expansive forming composite manufacturing bathroom faucet branch pipe,
It is characterized in that the outer surface of the extruding tubing in step 2 to cutting out sprays antioxidant；Outer surface is coated with antioxidant again
Extruding tubing to be placed in temperature be that 3h~6h is heat-treated in 600 DEG C~800 DEG C of Muffle furnace, then furnace cooling is heat-treated
Pipe afterwards.
7. a kind of hot extrusion according to claim 1 and the method for expansive forming composite manufacturing bathroom faucet branch pipe,
It is characterized in that in step 6 the temperature of mold being increased to 550 DEG C~800 DEG C, then leads in the case where mold temperature is 550 DEG C~800 DEG C
Gas is passed through in the pipe crossed after the air inlet pipe heat treated of right pressure head (4), makes the gas pressure control in the pipe after heat treatment
It makes in 4MPa~6MPa, and heat-insulation pressure keeping 5min~10min.
8. a kind of hot extrusion according to claim 1 and the method for expansive forming composite manufacturing bathroom faucet branch pipe,
It is characterized in that in step 5, when the pipe after heat treatment is full of blind hole (7), reducing the lateral of left pressure head (3) and right pressure head (4)
Pressure, lateral pressure are down to the 70% of original pressure, and the velocity of displacement of left pressure head (3) and right pressure head (4) is down to 0mm/s, then stops
Only gas is passed through in the pipe after heat treated.
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| CN108941305B (en) * | 2017-05-26 | 2023-11-28 | 无锡朗贤轻量化科技股份有限公司 | Pipe fitting hydroforming equipment and process for convex ring with small round angle |
| CN107695624B (en) * | 2017-09-29 | 2019-07-19 | 北京科勒有限公司 | The production method of bathroom hardware shell |
| CN115740167A (en) * | 2022-12-26 | 2023-03-07 | 河北亚都管道装备集团有限公司 | Equal-diameter hot extrusion forming process for steel seamless thick-wall tee joint |
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