CN103484914B - High silicon aluminum alloy anodic oxidation method and equipment thereof - Google Patents
High silicon aluminum alloy anodic oxidation method and equipment thereof Download PDFInfo
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- CN103484914B CN103484914B CN201310457289.5A CN201310457289A CN103484914B CN 103484914 B CN103484914 B CN 103484914B CN 201310457289 A CN201310457289 A CN 201310457289A CN 103484914 B CN103484914 B CN 103484914B
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Abstract
The invention discloses a high silicon aluminum alloy anodic oxidation method and equipment thereof. The method comprises the steps as follows: A, after a high silicon aluminum alloy die casting is subjected to oil removing, abrasive water jet polishing treatment is performed; B, the polished high silicon aluminum alloy die casting is placed in a prepared anodic bath solution, rectangular wave pulse voltage is used for performing an anodic oxidation reaction, and the anodic oxidation reaction is stopped after an anodic oxidation film layer reaches a preset thickness; and C, after the high silicon aluminum alloy die casting with the anodic oxidation film layer is subjected to water washing and dyeing, hole sealing treatment is performed, so that a finished product is obtained. According to the method, pretreatment, anodic oxidation reaction and post treatment technologies of the anodic oxidation reaction of the high silicon aluminum alloy die casting are modified, so that the oxidation layer which is uniform, high in dimensional accuracy, compact and attractive is formed on the surface of the prepared high silicon aluminum alloy die casting; and compared with a conventional technology, the processing technology is more environment-friendly, the processing cost is lower, and large-scale industrial production can be realized more easily.
Description
Technical field
The present invention relates to field of metal surface treatment technology, more particularly, to a kind of High silicon aluminum alloy anodic oxidation method and its
Equipment.
Background technology
Crowded type pure aluminum alloy anodic oxidation is ripe process for treating surface, but this technology and equipment is in high silicon die casting aluminium
The film layer of complex structure surface anodization often have aberration, the bad outward appearance such as macula lutea is it is impossible to realize film layer appearance uniform, chi
Very little precision, it more difficult to realize automated production, therefore U.S. army's standard mil-a-8625f3.6 specifies anodic oxidation to the high requirement of hardness
" cast aluminium alloy gold may show that trace is overflowed in the related dyeing of the characteristic intrinsic to foundry goods or eclipsed (or color differs to coating
Cause) ".On the other hand, the characteristic of the easy die cast of silumin makes Die Casting Enterprise development swift and violent, and high silicon die casting aluminium
Anode oxidation membrane performance becomes the bottleneck of Die Casting Industry advantage performance.What high silicon die casting anodizing of aluminium existed at present is main
Problem has:
1. squeeze type pure aluminum alloy anodizing technology pre-treatment and use the with serious pollution medicinal liquids such as phosphoric acid chemical polishing, and
Multicomponent die casting aluminium surface corrosion can be caused it is impossible to form compact oxidation layer；
2. squeezing type pure aluminum alloy anodizing technology commutator is that single hop voltage stabilizing controls mostly, does not have multistage intelligentized control method
Voltage x current, causes the formation speed of oxide-film little with corrosion rate difference, does not realize the thick film layers of die casting aluminium, and film layer is uneven
Even；
3. silumin previous in anodic oxidation as silicon to be removed, and guarantee after operation medicine after removing silicon, will be dried
The stablizing of liquid, and current market design aluminium alloy anode oxide automatic production line not by oven designs on automatic production line.
Therefore, prior art has yet to be improved and developed.
Content of the invention
A kind of in view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide High silicon aluminum alloy anodic oxidation method
And its equipment is it is intended to solve that the oxidation film layer that high silicon die casting alumilite process exists at present is uneven, hardness is low, appearance poor etc. is asked
Topic.
Technical scheme is as follows:
A kind of High silicon aluminum alloy anodic oxidation method, wherein, the method comprising the steps of:
A, carry out abrasive waterjet polishing process by after silumin die casting oil removing；
B, will process through abrasive waterjet polishing after silumin die casting put in the anode tank liquor prepared in advance,
Anodic oxidation reactionses 15-35 minute is carried out using Square wave pulses voltage, reaches to anode oxidation membrane and stop after predetermined thickness
Anodic oxidation reactionses；
C, the silumin die casting wash water that described anode oxidation membrane will be formed, carry out after sealing pores after dyeing
To finished product.
Described High silicon aluminum alloy anodic oxidation method, wherein, forms the height of anode oxidation membrane described in described step c
Silico-aluminum die casting is also performed to blow water after sealing pores, obtains finished product after dried.
Described High silicon aluminum alloy anodic oxidation method, wherein, described dried is to be carried out by automatic baking baking box.
Described High silicon aluminum alloy anodic oxidation method, wherein, in described step a, the oil removing time is 5-10 minute.
Described High silicon aluminum alloy anodic oxidation method, wherein, the described anode tank liquor prepared in advance is included with the following group
Point:
250-300 gram of sulphuric acid/l, 20-35 gram of oxalic acid/l, 20-35 gram of citric acid/l, 10-15 gram of tartaric acid/l.
Described High silicon aluminum alloy anodic oxidation method, wherein, after processing through abrasive waterjet polishing in described step b
Silumin die casting put in the anode tank liquor prepared in advance particularly as follows: by the height after processing through abrasive waterjet polishing
Silico-aluminum die casting was put in the anode tank liquor prepared in advance within 60-120 time second.
Described Square wave pulses voltage high level is 7-9v, holds time as 40-100s, and low level is 5-6v, during maintenance
Between be 8-10s.
Described High silicon aluminum alloy anodic oxidation method, wherein, the predetermined thickness of described anode oxidation membrane is 20-22
m.
Described High silicon aluminum alloy anodic oxidation method, wherein, described sealing pores are by the silumin after dyeing
Die casting carries out 90 DEG C of sealing pores.
A kind of equipment realizing High silicon aluminum alloy anodic oxidation method as above, wherein, described equipment includes:
Degreasing tank, for carrying out oil removing to described silumin die casting；
Abrasive waterjet polishing machine, for carrying out at abrasive waterjet polishing to the silumin die casting after oil removing
Reason；
Anode slot, for holding the described anode tank liquor that silumin die casting is carried out with anodic oxidation reactionses；
Multistage intelligent computer controls commutator, for forming described Square wave pulses voltage and coordinating described anode tank liquor to enter
Row anodic oxidation reactionses；
Chroma tank, for carrying out dyeing process to the silumin die casting after described wash water；
90 DEG C of sealing of hole grooves, for carrying out sealing pores to the silumin die casting after dyeing；
Automatic baking baking box, for sealing pores and blow the silumin die casting after water process and be dried.
Beneficial effect: the present invention provides a kind of High silicon aluminum alloy anodic oxidation method and its equipment.By closing to high sial
The pre-treatment of golden die casting anodic oxidation reactionses, anodic oxidation reactionses, aftertreatment technology improve the high silicon so that prepared
The oxide layer that pack alloy surface forms even film layer, dimensional accuracy is high, densification is attractive in appearance, compared to traditional handicraft, the present invention
Processing technique more environmentally friendly, processing cost is lower, is more easy to realize large-scale industrial production, and the high silicon die casting aluminium processed closes
Gold surface oxide layer has the advantages that accurate superhard uniform color, has the extremely strong market competitiveness.
Brief description
Fig. 1 is the High silicon aluminum alloy anodic oxidation method flow chart of the present invention.
Fig. 2 is the theory diagram of the silumin anodic oxidation equipment of present pre-ferred embodiments.
Specific embodiment
The present invention provides a kind of High silicon aluminum alloy anodic oxidation method and its equipment, for making the purpose of the present invention, technical side
Case and effect are clearer, clear and definite, and the present invention is described in more detail below.It should be appreciated that concrete reality described herein
Apply example only in order to explain the present invention, be not intended to limit the present invention.
A kind of High silicon aluminum alloy anodic oxidation method as shown in Figure 1, wherein, the method comprising the steps of:
S100, carry out abrasive waterjet polishing process by after silumin die casting oil removing.
Silumin die casting oil removing and polishing are all pre-treatment steps, and in preferred embodiment, 5-10 minute can be complete
Become oil removing.The silumin die casting reaching anodic oxidation light is necessary in front process, die casting being polished,
Abrasive waterjet polishing processes and silumin die casting is surface-treated to certain roughness (rz2.0-4.0), forms fine aluminium
Layer.The polishing of silumin die casting is using the phosphoric acid using with pre-treatment in crowded type pure aluminum alloy anode oxidation process at present
The same, such chemical polishing agent serious environment pollution Deng three acidifying polishing processes, the glossing of the present invention reduces environment dirt
Dye, meets the demand for development of metal surface treatment technology environmental protection.
S200, will process through abrasive waterjet polishing after silumin die casting put into the anode tank liquor prepared in advance
In, anodic oxidation reactionses 15-35 minute is carried out using Square wave pulses voltage, reaches to anode oxidation membrane and stop after predetermined thickness
Only anodic oxidation reactionses.
Described silumin die casting need to be put in advance after abrasive waterjet polishing process within 60-120 time second
In the anode tank liquor prepared.Silumin die casting surface makes it that oxygen easily to occur due to forming aluminum layer through polishing
Change, affect follow-up anodic oxidation reactionses, therefore need timely silumin die casting complete for polishing to be shifted Zhiyang
Carry out next step operation in the tank liquor of pole, complete to shift the polished surface that just can reduce die casting to greatest extent in the 60-120 second
Oxidation.Also it is to ensure that a critical process of the anode oxidation membrane quality of final silumin die casting.
In preferred embodiment, the described anode tank liquor prepared in advance includes component and its density: 250-300 gram of sulphuric acid/
L, 20-35 gram of oxalic acid/l, 20-35 gram of citric acid/l, 10-15 gram of tartaric acid/l.This combination formula is specifically designed for silumin
The anodic oxidation reactionses design of die casting.Make the anodic oxidation reactionses time of this technique short, anode reaction is strong, anode oxide film
Formation speed is fast, and the oxide-film being formed is fine and close, uniformly.
In concrete production, automatic assembly line adopt multistage intelligent computerized control commutator produce Square wave pulses voltage
Carry out anodic oxidation reactionses it is preferable that described Square wave pulses voltage is direct current unidirectional pulse, its high level is 7-9v, dimension
Time of holding is 40-100s, and low level is 5-6v, holds time as 8-10s.In addition, multistage is intelligent computerized controlling on commutator
Setting has the regulation switch that single hop and multistage switching are adjusted, and realizes output Square wave pulses voltage or defeated by adjusting switch
Go out the purpose of continual and steady voltage, the two of high silicon pack alloy and extruded signing panel alloy (needs single hop voltage stabilizing) can be met respectively
The processing request of class product.
In preferred embodiment, when described anode oxidation membrane thickness is detected and reaching 20-22 m, stop anodic oxidation
Operation, die casting is hung out anode slot by driving, enters subsequent processing.
Adopt on the market at present is polished by air pressure sandblasting on silumin surface and realizes anode
The uniformity of oxide layer, its change in size is generally higher than 50 m, and the present invention adopts abrasive waterjet polishing to process high sial conjunction
Golden die casting surface, in conjunction with the silumin anode oxidation membrane chi prepared by the anodic oxidation reactionses of Square wave pulses voltage
Very little change is less than 3 m, and that is, the uniformity of anode oxidation membrane is far better than existing silumin processing technique preparation at present
Like product, the appearance of silumin anode oxidation membrane prepared by the present invention and elaboration are also far superior to simultaneously
Like product at present.
S300, will be formed described anode oxidation membrane silumin die casting wash water, dyeing after carry out sealing pores
After obtain finished product.
Silumin die casting is placed in chroma tank after forming anode oxidation membrane and is dyeed, by soaking, profit
Make dyestuff enter oxidation film layer with absorption principle, move to product in 90 DEG C of sealing of hole grooves more afterwards and carry out sealing pores.
Wherein, in concrete production process, described sealing pores use 90 DEG C of sealing pores.Form anode oxidation membrane
Silumin die casting be also performed to blow water after sealing pores, just obtain finished product after dried.Wherein, in high sial
On alloy pressuring casting anodic oxidation automatic production line, setting automatic baking baking box is dried process.
A kind of equipment realizing High silicon aluminum alloy anodic oxidation method as above as shown in Figure 2 includes, i.e. high silicon
The composition of aluminium alloy anode oxide machining production line includes:
Degreasing tank 100, for carrying out oil removing to described silumin die casting；
Abrasive waterjet polishing machine 200, for carrying out abrasive waterjet polishing to the silumin die casting after oil removing
Process；
Anode slot 300, for holding the described anode tank liquor that silumin die casting is carried out with anodic oxidation reactionses；
Multistage intelligent computer controls commutator 400, for forming described Square wave pulses voltage and coordinating described anode slot
Liquid carries out anodic oxidation reactionses；
Chroma tank 500, for carrying out dyeing process to the silumin die casting after described wash water；
90 DEG C of sealing of hole grooves 600, for carrying out sealing pores to the silumin die casting after dyeing；
Automatic baking baking box 700, for sealing pores and blow the silumin die casting after water process and be dried.
In preferred embodiment, this production line is additionally included in for the silumin die casting through anodic oxidation reactionses
Carry out the washing equipment a 810 that wash water removes anode tank liquor, the wash water for carrying out wash water technique after sealing pores finish fills
Put b 820, and for carrying out blowing the water-blowing device 900 of water process after sealing of hole, wash water.Then the die casting after water will be blown
Send into automatic baking baking box to be dried, finally obtain finished product.
Said apparatus are in turn connected to form automatic assembly line, and this automatic assembly line both can carry out high sial diecasting alloys sun
Pole oxidation processing also can carry out the oxidation processing of extruded signing panel alloy anode.
The present invention provides a kind of High silicon aluminum alloy anodic oxidation method and its equipment.By to silumin die casting sun
The pre-treatment of pole oxidation reaction, anodic oxidation reactionses, aftertreatment technology improve the high silicon pack alloy so that prepared
The oxide layer that surface forms even film layer, dimensional accuracy is high, densification is attractive in appearance, compared to traditional handicraft, the processing technique of the present invention
More environmentally friendly, processing cost is lower, is more easy to realize large-scale industrial production, and the high silicon pack alloy surface oxidation processed
Layer has the advantages that accurate superhard uniform color, has the extremely strong market competitiveness.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved according to the above description or to convert, all these modifications and variations all should belong to the guarantor of claims of the present invention
Shield scope.
Claims (5)
1. a kind of High silicon aluminum alloy anodic oxidation method is it is characterised in that the method comprising the steps of:
A, carry out abrasive waterjet polishing process by after silumin die casting oil removing；
B, will process through abrasive waterjet polishing after silumin die casting put in the anode tank liquor prepared in advance, adopt
Square wave pulses voltage carries out anodic oxidation reactionses 15-35 minute, reaches stopping anode after predetermined thickness to anode oxidation membrane
Oxidation reaction；
C, will be formed described anode oxidation membrane silumin die casting wash water, dyeing after carry out being become after sealing pores
Product；
Described Square wave pulses voltage controls commutator to produce by multistage is intelligent computerized；
The described anode tank liquor prepared in advance includes following components: 250-300 gram of sulphuric acid/l, 20-35 gram of oxalic acid/l, citric acid
20-35 gram/l, 10-15 gram of tartaric acid/l；
Silumin die casting after processing through abrasive waterjet polishing in described step b puts into the anode slot prepared in advance
Particularly as follows: putting into the silumin die casting after processing through abrasive waterjet polishing process within 60-120 time second in liquid
In the anode tank liquor prepared in advance；
Described Square wave pulses voltage high level is 7-9v, holds time as 40-100s, and low level is 5-6v, hold time for
8-10s；
The predetermined thickness of described anode oxidation membrane is 20-22 m.
2. High silicon aluminum alloy anodic oxidation method according to claim 1 is it is characterised in that shape described in described step c
The silumin die casting becoming anode oxidation membrane is also performed to blow water after sealing pores, obtains finished product after dried.
3. High silicon aluminum alloy anodic oxidation method according to claim 2 is it is characterised in that described dried is to pass through
Automatic baking baking box is carried out.
4. High silicon aluminum alloy anodic oxidation method according to claim 1 is it is characterised in that in described step a during oil removing
Between be 5-10 minute.
5. High silicon aluminum alloy anodic oxidation method according to claim 1 is it is characterised in that described sealing pores are to contaminate
Silumin die casting after color carries out 90 DEG C of sealing pores.
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| CN104805485A (en) * | 2015-04-07 | 2015-07-29 | 广东欧珀移动通信有限公司 | Surface treatment method for die-cast aluminum alloy |
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| CN106119879A (en) * | 2016-08-29 | 2016-11-16 | 王才照 | A kind of movably metal process for producing line and processing method thereof |
| CN107740161A (en) * | 2017-11-07 | 2018-02-27 | 童信淞 | Aluminium alloy compression casting product anodic oxidation preparation method |
| CN109023471B (en) * | 2018-10-09 | 2020-08-21 | 长春工业大学 | Aluminum alloy and preparation method thereof |
| CN109913924B (en) * | 2019-03-15 | 2020-06-26 | 安徽华淮新材料有限公司 | Anodic oxidation method for high-silicon aluminum alloy die casting |
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| CN110408974A (en) * | 2019-07-17 | 2019-11-05 | 东莞旭光五金氧化制品有限公司 | A kind of high silicon pack alloy anodic oxidation brilliant black manufacturing process |
| CN111235618B (en) * | 2020-01-16 | 2021-10-29 | 长沙鼎日成金属表面处理有限公司 | Anodic oxidation electrophoresis process for high-silicon high-copper aluminum alloy parts |
| CN111893538A (en) * | 2020-07-02 | 2020-11-06 | 中国航发贵州红林航空动力控制科技有限公司 | Hard anodizing process method for 3D printing forming AlSi10Mg aluminum alloy material |
| CN115161733B (en) * | 2022-09-08 | 2022-12-13 | 苏州优缘建材有限公司 | Surface treatment structure of aluminum alloy and preparation method thereof |
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