CN108796576A - A kind of anode processing technique and its oxidation unit for pack alloy - Google Patents
A kind of anode processing technique and its oxidation unit for pack alloy Download PDFInfo
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- CN108796576A CN108796576A CN201811020676.1A CN201811020676A CN108796576A CN 108796576 A CN108796576 A CN 108796576A CN 201811020676 A CN201811020676 A CN 201811020676A CN 108796576 A CN108796576 A CN 108796576A
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- oxidation
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/005—Apparatus specially adapted for electrolytic conversion coating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/022—Anodisation on selected surface areas
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a kind of anode processing techniques and its oxidation unit for pack alloy, the anode processing technique includes pretreatment process, for the first time cleaning, polishing treatment, second cleaning, oxidation processes, ultrasonic cleaning process successively, the oxidation unit includes multiple oxidation chambers, has backwater channel between the multiple oxidation chamber；The backwater channel is connected to the electrolyte holding tank；The multiple oxidation chamber bottom is provided with the spray assemblies being connected to backwater channel, and the spray assemblies are connect by kinetic pump with electrolyte holding tank, and agitating device is provided in the electrolyte holding tank.The present invention makes each component in electrolyte be sufficiently mixed uniformly, while controling effectively to the temperature of electrolyte, improves the efficiency that workpiece to be oxidized forms oxidation film by the way that the agitating device with temp regulating function is arranged in electrolyte holding tank.
Description
Technical field
The present invention relates to field of metal surface treatment technology, are handled more particularly to a kind of anode for pack alloy
Technique and its oxidation unit.
Background technology
As aluminium alloy is most widely used one kind structural metallic materials in industry, in Aeronautics and Astronautics, automobile, machinery
It has been widely applied in manufacture, ship and chemical industry.It is placed in electrolyte solution by anode of Al-alloy products, is made using electrolysis
With making its surface form the process of aluminum oxide film, the referred to as anodized of aluminium alloy.By the aluminium of anodized
Alloy product is known as aluminum alloy anode product.
Currently, during anodic oxidation, by the concentration, oxidization time and the electricity that control the electrolyte in electrolytic cell
The temperature etc. of chemical reaction, to obtain the oxidation film of even compact；However, aluminum alloy anode prepared by conventional anodization technique
The corrosion resistance of oxidation film is not high, and strong acid is stronger to the dissolving of oxidation film, and the microhardness of film layer is generally relatively low, furthermore, due to
The temperature of the concentration and non-uniform temperature of electrolyte, oxidization time and electrochemical reaction such as is difficult to control at the reasons, leads to aluminum
The anodized of product it is less efficient, and then affect production efficiency.
Invention content
The purpose of the present invention is overcoming shortcoming in the prior art, provide at a kind of anode for pack alloy
Science and engineering skill and its oxidation unit, to solve the problems, such as above-mentioned background technology.
In order to solve the above technical problems, the present invention is solved by following technical proposals：
A kind of anode processing technique for pack alloy, which is characterized in that include the following steps：
The first step, pretreatment process：Pack alloy is polished；
Second step cleans for the first time：Die-cast aluminum alloy workpiece after polishing is put into sodium hydroxide solution and carries out alkali cleaning,
The die-cast aluminum alloy workpiece after alkali cleaning is rinsed with tap water, it is 5-6 to rinse to the pH value of washing lotion；
Third walks, polishing treatment：Die-cast aluminum alloy workpiece after first time is cleaned, which is put into polishing fluid, carries out chemical throwing
Light, polish temperature are 68-73 DEG C, polishing time 45-55s；
4th step, second of cleaning：The die-cast aluminum alloy workpiece after polishing is rinsed with tap water, is rinsed to the pH value of washing lotion
For 5-6；
5th step, oxidation processes：Die-cast aluminum alloy workpiece after second is cleaned is put into oxidation by mechanical arm
Spray DC electrolyzing is carried out in device, when spraying DC anodizing, spray pressure 1.5-2.5MPa, DC voltage 15-
20V, current density 2.0-3.0A/dm2, anodic oxidation solution temperature are 30-40 DEG C, speed of agitator 0-1500rpm, spray
Time is 30-40min；
Die-cast aluminum alloy workpiece after oxidation processes is carried out deionized water ultrasonic cleaning and absolute ethyl alcohol surpasses by the 6th step
Sound wave cleans, and is dried in natural environment, obtains Al alloy parts finished product.
The present invention also provides a kind of oxidation units for pack alloy, are used for die-cast aluminum alloy workpiece according to above-mentioned
Anode processing technique carries out anodic oxidation, and the oxidation unit includes power supply, electrolyte holding tank, oxidation trough, anode assembly, the moon
Pole device, the anode assembly include the mounting plate being fixed on external mechanical arm, and the mechanical arm is used to drive when work
The mounting plate activity is contained in the oxidation trough, and multiple shafts and described for driving are set side by side on the mounting plate
The motor of shaft rotation, is equipped with multiple clamp assemblies for clamping workpiece in the shaft；
The cathode assembly is installed in the oxidation trough, has multiple oxidation chambers, the clamping on the cathode assembly
Component activity is contained in corresponding oxidation chamber, has backwater channel between the multiple oxidation chamber；The backwater channel and institute
State the connection of electrolyte holding tank；The multiple oxidation chamber bottom is provided with the spray assemblies being connected to backwater channel, the spray
Component is connect by kinetic pump with electrolyte holding tank, and agitating device, the stirring dress are provided in the electrolyte holding tank
It is set to the hollow pipe fitting for being rotationally connected with continuous bend on the electrolyte holding tank, cooling is filled in the hollow pipe fitting
Liquid.
Further, conductive plate and sealing frock, the sealing frock and corresponding institute are provided on the clamp assemblies
State oxidation chamber sealed connection.
Further, the oxidation trough is open-topped hollow cuboid.
Further, the hollow pipe fitting both ends of the agitating device connect coolant circulation unit.
Further, rotational speed governor and flow regulator are provided on the agitating device.
The present invention has the following advantages compared with prior art and advantageous effect：
1, cathode assembly of the invention is installed in oxidation trough, has multiple oxidation chambers, the folder on the cathode assembly
It holds component activity to be contained in corresponding oxidation chamber, there is backwater channel between the multiple oxidation chamber；The backwater channel with
The electrolyte holding tank connection.Electrolyte can be made to be contacted with one or more faces of aluminium alloy, can accurately carry out aluminium
The local anodic oxidation of alloy workpiece is handled, and the oxidation processes of multiple workpiece are not interfere with each other, and oxygen is carried out by adjusting spray pressure
Oxidization time is shortened in the control of change process, improves oxidation efficiency, improves oxygen change quality.
2, by the way that the agitating device with temp regulating function is arranged in electrolyte holding tank, make each group in electrolyte
Divide and be sufficiently mixed uniformly, while controling effectively to the temperature of electrolyte, improves the effect that workpiece to be oxidized forms oxidation film
Rate.
3, the oxide thickness that anode processing technique of the invention is formed is more uniform, and hardness is high, and wearability is good, aluminium alloy
220-620HV generally is can reach, corrosion resisting property is good, can reach hundreds of hours salt spray tests；Oxidation film fusing point is up to 21 DEG C, resistance to
Erosion and heat-proof quality are good, and oxidation film resistivity is big, and good insulation preformance, breakdown voltage can reach 2200V.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a kind of process flow chart of anode processing technique for pack alloy
Fig. 2 is a kind of structural schematic diagram of oxidation unit for pack alloy.
Specific implementation mode
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
The specific implementation process of the present invention is as follows：
As shown in Figure 1, a kind of anode processing technique for pack alloy, includes the following steps：
The first step, pretreatment process：Pack alloy is polished；
Second step cleans for the first time：Die-cast aluminum alloy workpiece after polishing is put into sodium hydroxide solution and carries out alkali cleaning,
The die-cast aluminum alloy workpiece after alkali cleaning is rinsed with tap water, it is 5-6 to rinse to the pH value of washing lotion；
Third walks, polishing treatment：Die-cast aluminum alloy workpiece after first time is cleaned, which is put into polishing fluid, carries out chemical throwing
Light, polish temperature are 68-73 DEG C, polishing time 45-55s；
4th step, second of cleaning：The die-cast aluminum alloy workpiece after polishing is rinsed with tap water, is rinsed to the pH value of washing lotion
For 5-6；
5th step, oxidation processes：Die-cast aluminum alloy workpiece after second is cleaned is put into oxidation by mechanical arm
Spray DC electrolyzing is carried out in device, when spraying DC anodizing, spray pressure 1.5-2.5MPa, DC voltage 15-
20V, current density 2.0-3.0A/dm2, anodic oxidation solution temperature are 30-40 DEG C, speed of agitator 0-1500rpm, spray
Time is 30-40min；
In one embodiment of the present of invention, Al alloy parts are in oxidation unit when oxidation processes, the spray of spray equipment
Pressure is 2MPa, DC voltage 18V, current density 2.5A/dm2, and anodic oxidation solution temperature is 36 DEG C, and speed of agitator is
800rpm, when spray time is 35min, Al alloy parts wear-resisting property can reach 220-620HV, and corrosion resisting property can reach hundreds of
The salt spray test of hour；Oxidation film fusing point is 21 DEG C, and anti-corrosion and heat-proof quality all has preferable performance.
Die-cast aluminum alloy workpiece after oxidation processes is carried out deionized water ultrasonic cleaning and absolute ethyl alcohol surpasses by the 6th step
Sound wave cleans, and is dried in natural environment, obtains Al alloy parts finished product.
As shown in Fig. 2, the present embodiment also provides a kind of oxidation unit for pack alloy, for pack alloy
Workpiece according to above-mentioned anode processing technique carry out anodic oxidation, including power supply, electrolyte holding tank 10, oxidation trough, anode assembly,
Cathode assembly, the anode assembly includes the mounting plate 30 being fixed on external mechanical arm, when the mechanical arm is used for work
It drives the mounting plate activity to be contained in the oxidation trough, multiple shafts 31 are set side by side on the mounting plate 30 and are used for
The motor of the shaft rotation is driven, multiple clamp assemblies for clamping workpiece are installed in the shaft；
The cathode assembly is installed in the oxidation trough, has multiple oxidation chambers 20, the folder on the cathode assembly
It holds component activity to be contained in corresponding oxidation chamber 20, there is backwater channel 36 between the multiple oxidation chamber 20；The return water
Channel 36 is connected to the electrolyte holding tank 10；20 bottom of the multiple oxidation chamber be provided be connected to backwater channel 36 spray
Component 40 is drenched, the spray assemblies 40 are connect with electrolyte holding tank 10 by kinetic pump, set in the electrolyte holding tank 10
It is equipped with agitating device 11, the agitating device 11 is the hollow pipe for being rotationally connected with continuous bend on the electrolyte holding tank 10
Part, the hollow pipe fitting is interior to be filled with coolant liquid.
Conductive plate 32 and sealing frock 35, the sealing frock 35 and the corresponding oxygen are provided on the clamp assemblies
Change chamber 20 to be tightly connected.
The oxidation trough is open-topped hollow cuboid, and the mounting plate 30 being connected on mechanical arm can be with oxidation
The edge of slot cooperates, and has sealing function.
The hollow pipe fitting both ends of the agitating device 11 connect coolant circulation unit 12.
Rotational speed governor and flow regulator (not shown) are provided on the agitating device 11, rotational speed governor is for controlling
The rotary speed of agitating device processed, flow regulator are used to adjust the circulation rate of coolant liquid, and the two combines, and work(is stirred realizing
Has the function of temperature adjusting while energy.
In the present embodiment, the course of work of the oxidation unit is：Second of cleaned aluminium alloy work will be passed through
Part 33 is installed in the clamp assemblies, and the clamp assemblies can be that clamping apparatus etc. can be by Al alloy parts detachable card
The device for being installed on 30 bottom of the mounting plate is closed, the conductive plate 32 being arranged on clamp assemblies is used for jointed anode electrode, preferably
, in one embodiment of the present of invention, the sealing frock 35 can be disposed on the sealing of the clamp assemblies top edges
Side, the sealing strip can combine closely with the cavity wall of corresponding oxidation chamber, and leakage is generated when preventing electrolyte from spraying.When aluminium closes
Metal working part 33 can change spray face and spray angles, for making irregular aluminium after installation is complete by the rotation of shaft 31
Alloy workpiece uniform alumina, while the exposure concentration for controlling Al alloy parts different surfaces and electrolyte, control aluminium alloy
The degree of oxidation of workpiece surface different location is conducive to save resource, reduces processing cost.Spray assemblies 40 are connect with kinetic pump,
Electrolyte in electrolyte holding tank 10 can be sprayed according to certain orientation in the face to be oxidized of Al alloy parts, keeps electrolysis positive
Pole is connected to cathode plate 41, forms current loop, after the electrolyte being ejected contacts on Al alloy parts surface, is fallen after rise to institute
36 bottom of backwater channel is stated, is discharged into electrolyte holding tank 10, in the present embodiment, kinetic pump is provided with pressure-regulating valve, Neng Goutong
The size that spray pressure changes spray flow is overregulated, it is in the thin of array-like distribution that the spray apertures of spray assemblies 40, which are several,
Hole can enable aluminum alloy to workpiece surface and more uniformly contact electrolyte, improve oxidation density, meanwhile, it is capable to pass through difference
The spray pressure in different oxidation chambers is controlled to realize to the differential control of different aluminum alloys workpiece oxidization time, reaches best
Oxidization time is shortened while oxidation effectiveness, improves processing efficiency.
The quantity of the oxidation chamber 20 could be provided as it is multiple, can mass simultaneous process multiple Al alloy parts, it is multiple
Oxidation chamber is communicated in by backwater channel 36 in the electrolyte holding tank 10, and recycling for electrolyte, electrolyte are formd
It is equipped with temperature sensor, temperature of the temperature sensor for incuding electrolyte in real time in holding tank 10, and the temperature of induction is sent out
It send to controller, controller adjusts the flow of coolant liquid according to the oxidizing temperature of systemic presupposition, is when the temperature of electrolyte is higher than
When system preset value, system accelerates the circulation rate of coolant liquid, realizes cooling-down effect, when the temperature of electrolyte is less than systemic presupposition value
When, system reduces coolant liquid circulation rate, and to keep temperature constant, agitating device 11 is using the tubular body of continuous bend in electricity
Flip-flop movement in liquid holding tank is solved, the electrolyte that backwater channel is discharged into can be stirred rapidly, make each group in electrolyte
Divide more uniformly, meanwhile, surface and the electrolyte of the tubular body of bending increase contact area, make the heat on the tubular body of bending
Amount and the heat of electrolyte quickly swap transmission, can be quickly precisely controlled to temperature.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (6)
1. a kind of anode processing technique for pack alloy, which is characterized in that include the following steps：
The first step, pretreatment process：Pack alloy is polished；
Second step cleans for the first time：Die-cast aluminum alloy workpiece after polishing is put into sodium hydroxide solution and carries out alkali cleaning, with certainly
Water rinses the die-cast aluminum alloy workpiece after alkali cleaning, and it is 5-6 to rinse to the pH value of washing lotion；
Third walks, polishing treatment：Die-cast aluminum alloy workpiece after first time is cleaned, which is put into polishing fluid, carries out chemical polishing, throws
Light temperature is 68-73 DEG C, polishing time 45-55s；
4th step, second of cleaning：The die-cast aluminum alloy workpiece after polishing is rinsed with tap water, it is 5- to rinse to the pH value of washing lotion
6；
5th step, oxidation processes：Die-cast aluminum alloy workpiece after second is cleaned is put into oxidation unit by mechanical arm
In carry out spray DC electrolyzing, when spraying DC anodizing, spray pressure 1.5-2.5MPa, DC voltage 15-20V,
Current density is 2.0-3.0A/dm2, and anodic oxidation solution temperature is 30-40 DEG C, speed of agitator 0-1500rpm, spray time
For 30-40min；
Die-cast aluminum alloy workpiece after oxidation processes is carried out deionized water ultrasonic cleaning and absolute ethyl alcohol ultrasonic wave by the 6th step
It cleans, is dried in natural environment, obtain Al alloy parts finished product.
2. a kind of oxidation unit for pack alloy, it is characterised in that：Including power supply, electrolyte holding tank, oxidation trough, sun
Pole device, cathode assembly, the anode assembly include the mounting plate being fixed on external mechanical arm, and the mechanical arm is used for work
As when drive the mounting plate activity to be contained in the oxidation trough, multiple shafts are set side by side on the mounting plate and are used for
The motor of the shaft rotation is driven, multiple clamp assemblies for clamping workpiece are installed in the shaft；
The cathode assembly is installed in the oxidation trough, has multiple oxidation chambers, the clamp assemblies on the cathode assembly
Activity is contained in corresponding oxidation chamber, has backwater channel between the multiple oxidation chamber；The backwater channel and the electricity
Solve the connection of liquid holding tank；The multiple oxidation chamber bottom is provided with the spray assemblies being connected to backwater channel, the spray assemblies
It is connect with electrolyte holding tank by kinetic pump, agitating device is provided in the electrolyte holding tank, the agitating device is
It is rotationally connected with the hollow pipe fitting of continuous bend on the electrolyte holding tank, coolant liquid is filled in the hollow pipe fitting.
3. a kind of oxidation unit for pack alloy according to claim 2, it is characterised in that：The clamp assemblies
On be provided with conductive plate and sealing frock, the sealing frock and the corresponding oxidation chamber are tightly connected.
4. a kind of oxidation unit for pack alloy according to claim 2, it is characterised in that：The oxidation trough is
Open-topped hollow cuboid.
5. a kind of oxidation unit for pack alloy according to claim 2, it is characterised in that：The agitating device
Hollow pipe fitting both ends connect coolant circulation unit.
6. a kind of oxidation unit for pack alloy according to claim 2, it is characterised in that：The agitating device
On be provided with rotational speed governor and flow regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020676.1A CN108796576A (en) | 2018-09-03 | 2018-09-03 | A kind of anode processing technique and its oxidation unit for pack alloy |
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|---|---|---|---|
| CN201811020676.1A CN108796576A (en) | 2018-09-03 | 2018-09-03 | A kind of anode processing technique and its oxidation unit for pack alloy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718309A (en) * | 2021-09-01 | 2021-11-30 | 天长市京发铝业有限公司 | Aluminum plate anodic oxidation equipment |
| CN115301220A (en) * | 2022-07-19 | 2022-11-08 | 北京中环康健环保科技有限公司 | Nano-transistor TiO 2 Photocatalytic film and preparation method and preparation system thereof |
| CN118685832A (en) * | 2024-08-22 | 2024-09-24 | 南方科技大学嘉兴研究院 | Porous material polishing system, polishing method and metal powder low-temperature deoxidation method |
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| CN102839407A (en) * | 2012-09-18 | 2012-12-26 | 无锡市喷特环保工程有限公司 | Piston rapid aluminum oxidation single machine |
| CN105401201A (en) * | 2015-12-22 | 2016-03-16 | 上海申和热磁电子有限公司 | Anodic oxidation technology used for aluminum alloy base material of TFT liquid crystal glass panel |
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| CN107313095A (en) * | 2017-08-30 | 2017-11-03 | 重庆协成汽车零部件有限公司 | Anodic oxidation device and piston anodic oxidation processing technology |
| CN108221023A (en) * | 2016-12-22 | 2018-06-29 | 无锡金科涂装有限公司 | Aluminium alloy anode oxide technique |
| CN208667878U (en) * | 2018-09-03 | 2019-03-29 | 东莞市旺鑫精密工业有限公司 | A kind of oxidation unit for pack alloy |
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2018
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| CN102839407A (en) * | 2012-09-18 | 2012-12-26 | 无锡市喷特环保工程有限公司 | Piston rapid aluminum oxidation single machine |
| CN105401201A (en) * | 2015-12-22 | 2016-03-16 | 上海申和热磁电子有限公司 | Anodic oxidation technology used for aluminum alloy base material of TFT liquid crystal glass panel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718309A (en) * | 2021-09-01 | 2021-11-30 | 天长市京发铝业有限公司 | Aluminum plate anodic oxidation equipment |
| CN113718309B (en) * | 2021-09-01 | 2023-12-15 | 天长市京发铝业有限公司 | Aluminum plate anodic oxidation equipment |
| CN115301220A (en) * | 2022-07-19 | 2022-11-08 | 北京中环康健环保科技有限公司 | Nano-transistor TiO 2 Photocatalytic film and preparation method and preparation system thereof |
| CN118685832A (en) * | 2024-08-22 | 2024-09-24 | 南方科技大学嘉兴研究院 | Porous material polishing system, polishing method and metal powder low-temperature deoxidation method |
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Application publication date: 20181113 |