CN1038132A - The wide temperature high-speed oxidation technique of aluminum or aluminum alloy - Google Patents

The wide temperature high-speed oxidation technique of aluminum or aluminum alloy Download PDF

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CN1038132A
CN1038132A CN 88105586 CN88105586A CN1038132A CN 1038132 A CN1038132 A CN 1038132A CN 88105586 CN88105586 CN 88105586 CN 88105586 A CN88105586 A CN 88105586A CN 1038132 A CN1038132 A CN 1038132A
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grams per
per liters
high speed
additive
temperature range
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王祖源
刘大雨
张亦柯
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WUXI LOCK FACTORY
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WUXI LOCK FACTORY
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Abstract

The invention provides the technology of the high film forming speed of wide operating temperature range of the sulphuric acid anodizing of a kind of aluminium and aluminum alloy surface.The main sulfur acid of the composition of electrolytic solution also has a spot of oxalic acid, boric acid, tartrate and aniorfic surfactant etc., adopt simultaneously and be accelerated into film additive and widen the temperature range additive, making operating temperature range is 0~50 ℃, and film forming speed reaches 1.2 microns/square decimeter.This technology is fitted the surperficial anodic oxidation treatment of fine aluminium, particularly aluminium alloy and aluminium diecast alloy goods.

Description

The wide temperature high-speed oxidation technique of aluminum or aluminum alloy
The present invention relates to a kind of wide temperature high-speed oxidation technique of aluminum or aluminum alloy high-speed oxidation technique, particularly a kind of aluminum alloy die casting.
Aluminum products are immersed in the electrolytic solution energising continuously, make the aluminum products surface form oxide film with the technology that reaches protection aluminum products widespread usage.Used chromic acid electrolytic solution in the past, its advantage is that oxide thickness can reach 4~5 microns, and fine and close, and its oxide film etch resistant properties is better.But because chromic acid price height, and chromic toxicity caused serious pollution problem, just replaced chromic acid with sulfuric acid more or less in some cases.
Under the sulphuric acid anodizing processing condition of routine, when the current density of employing 1 peace/square decimeter was carried out oxide treatment, its film forming speed was 0.2~0.25 micron/minute.Japan's aluminium production technology research proposes a kind of new aluminium and aluminium alloy high speed anode oxidation process, and the film forming speed of sulphuric acid anodizing is increased to 0.4~0.5 micron/minute.Its electrolytic solution and process conditions are: free sulfuric acid 200~220 grams per liters, aluminium permissible level<20 grams per liter (Al +++), additive (NiSO 4) 8 ± 2 grams per liters, 22~24 ℃ of solution temperatures, current density 1.5~2 peace/square decimeters.If sulfuric acid content increases to 300 grams per liters, when current density was 2 peace/square decimeters, the highest film forming speed was 1 micron/minute.But the temperature range of this high speed anode oxidation process is little, and film forming speed is also undesirable.
Purpose of the present invention is providing a kind of wide temperature high-speed oxidation technique of aluminum or aluminum alloy, reduces energy consumption and reduces cost to reach.
Oxidizing process flow process provided by the invention comprises: oil removing, hot water wash, electropolishing, high speed anodic oxidation and painted.Characteristics are that the electrolytic solution and the process conditions of oxidation is: sulfuric acid H 2SO 4150~320 grams per liters, Tai-Ace S 150 Al 2(SO 4) 318H 2O 0~8 grams per liter, oxalic acid C 2O 4H 20~25 grams per liter, boric acid H 3BO 30~50 grams per liter, tartrate C 4O 6H 60~50 grams per liter, anionic table promoting agent 0.01~0.02 grams per liter, be accelerated into film additive 5~12 grams per liters, widen temperature range additive 2~5 grams per liters, 5~50 ℃ of solution temperatures, current density 1~5 peace/square decimeter, cathode material aluminium or lead.The film forming speed of this technology can reach 1~1.2 micron/minute.
This process using negatively charged ion chemistry deoiling method comes wetting product surface, and goods were both degreased, and reaches again matrix surface is not corroded, and also plays the wetting ability effect simultaneously.Anion surfactant is 5~8 milliliters/liter in the used degreasing fluid, and solution temperature is 60~80 ℃, till required time is the greasy dirt Ex-all.
The aluminium alloy polishing fluid of this process using phosphoric acid-sulfuric acid-chromic acid type, low, the easy grasp of this solution cost can play the leveling effect, can play polishing action again, is the better prescription of current aluminium alloy polishing fluid.Its polishing fluid and process conditions are: phosphoric acid H 3PO 460~70%, sulfuric acid H 2SO 415~20%, chromic acid CrO 35~8%, water H 2O 3~5%, 70~110 ℃ of temperature, current density 15~20 peace/square decimeters, time 1~3.Or: phosphoric acid H 3PO 460%, chromic acid CrO 320%, water H 2O 20%, 65~75 ℃ of temperature, current density 5~10 peace/square decimeters, 3 minutes time.
The film additive that is accelerated into that this technology adopted plays film forming (Al by cobalt salt (0.5g), palladium salt (0.2g), nickel salt (8g) composition in oxidising process 2O 3) characteristics such as speed is fast, thicknesses of layers is even, absorption reinforcement, micropore increase.
The temperature range additive antianode oxidation of widening that this technology is adopted plays the sheltering effect, is carried out addition reaction respectively and is formed by thiocarbamide (1g), monoethanolamine (10g), propyl disulfide (0.2g), xitix (2g), oxalate (15g), tartrate (30g), trolamine (12g), propylene oxide (20g), epoxy chloropropane (20g) 1,4 butynol organism such as (15g).Can play the temperature range effect of widening.
We have successively done practical examination to the Al-alloy products of the first-class Si of containing of core Door lock casing, handle, door bolt in the lockmaking industry, Cu, Mn, Mg.Concrete technical process is: aluminum alloy die casting → correction → mechanical polishing → oil removing → hot water wash → electropolishing → high speed anodic oxidation → painted → sealing → check → finished product.The electrolytic solution of the oxidation of adopting and process conditions have following four kinds of examples:
Figure 881055867_IMG1
Now the sample of the high-speed oxidation technique that the sample of the practical examination of this technology and Japanese aluminium production technology research are proposed carries out performance test and contrasts as follows:
Comprehensive above-mentioned situation, the wide temperature high-speed oxidation technique that the present invention proposes has following advantage:
1. can obtain oxidation film layer careful, that white is transparent in 0~50 ℃ of wide temperature range, be suitable for wide geographic area and use, energy savings reduces consuming.
2. film forming speed is fast, and makes rete be transparent, easily dyes various dark, light-coloured prods, is beneficial to the needs of all kinds of specialty decor products.
3. solution composition comprises and adds an agent composition, forms simply, and cost is low, and material source is extensive.
4. be suitable for the application of fine aluminium, particularly aluminium alloy and pack alloy goods.
5. do not have in process of production waste gas and produce, the waste water composition simply is easy to process, and is conducive to environmental protection, avoids polluting.

Claims (9)

1, a kind of aluminum or aluminum alloy high speed anode oxidation process, technical process comprises oil removing, hot water wash, electropolishing, high speed anodic oxidation, painted, it is characterized in that the electrolysis night of oxidation and process conditions are: sulfuric acid H 2SO 4150~320 grams per liters, Tai-Ace S 150 Al 2(SO 4) 318H 2O0~8 grams per liters, oxalic acid C 2O 4H 20~25 grams per liter, boric acid H 3BO 30~50 grams per liter, tartrate C 4O 6H 60~50 grams per liter, aniorfic surfactant 0.01~0.02 grams per liter, be accelerated into film additive 5~12 grams per liters, widen temperature range additive 2~5 grams per liters, 5~50 ℃ of solution temperatures, current density 1~5 peace/square decimeter, cathode material aluminium or lead.
2, high speed anode oxidation process according to claim 1 is characterized in that the electrolytic solution of oxidation and process conditions are: sulfuric acid H 2SO 4150~180 grams per liters, Tai-Ace S 150 Al 2(SO 4) 318H 2O 5~8 grams per liters, tartrate C 4O 6H 69~11 grams per liters, aniorfic surfactant 0.01~0.02 grams per liter, be accelerated into film additive 5~8 grams per liters, widen temperature range additive 3~5 grams per liters, 10~40 ℃ of solution temperatures, current density 1~3 peace/square decimeter, cathode material aluminium or lead.
3, high speed anode oxidation process according to claim 1 is characterized in that the electrolytic solution of oxidation and process conditions are: sulfuric acid HSO 280~320 grams per liters, Tai-Ace S 150 Al 2(SO 4) 318H 2O 5~8 grams per liters, be accelerated into film additive 8~12 grams per liters, widen temperature range additive 2~3 grams per liters, aniorfic surfactant 0.01~0.02 grams per liter, solution temperature 10~30, current density 3~5 peace/square decimeters, cathode material aluminium or lead, pneumatic blending.
4, high speed anode oxidation process according to claim 1 is characterized in that the electrolytic solution of oxidation and process conditions are: sulfuric acid H 2SO 4160~220 grams per liters, oxalic acid C 2O 4H 220~25 grams per liters, tartrate C 4O 6H 630~50 grams per liters, be accelerated into film additive 5~8 grams per liters, widen temperature range additive 3~5 grams per liters, aniorfic surfactant 0.01~0.02 grams per liter, 5~50 ℃ of solution temperatures, current density 3~6 peace/square decimeters, cathode material aluminium or lead, pneumatic blending.
5, high speed anode oxidation process according to claim 1 is characterized in that the electrolytic solution of oxidation and process conditions are: sulfuric acid H 2SO 4200~250 grams per liters, oxalic acid C 2O 4H 418~22 grams per liters, boric acid H 3BO 330~50 grams per liters, be accelerated into film additive 5~8 grams per liters, widen temperature range additive 2~3 grams per liters, anionic table promoting agent 0.01~0.02 grams per liter, 10~35 ℃ of solution temperatures, current density 1~2 peace/square decimeter, cathode material aluminium or lead.
6, according to claim 1,2,3,4 or 5 described high speed anode oxidation process, the drooping plan of its an ancient small-mouthed wine vessel is bragged the uranium pari and is supported ぬ and press and smooth the bad dark ramie danger of pupa .5g), palladium salt (0.2g) and nickel salt (8g) form.
7,, it is characterized in that widening the temperature range additive and carry out addition reaction and form by thiocarbamide (1g), propyl disulfide (0.2g), xitix (2g), oxalate (15g), tartrate (30g), monoethanolamine (10g), trolamine (12g), propylene oxide (20g), epoxy chloropropane (20g) 1,4 butynol (15g) organism according to claim 1,2,3,4 or 5 described high speed anode oxidation process.
8, high speed anode oxidation process according to claim 1 is characterized in that degreasing fluid and process conditions that oil removing is used are: 60~80 ℃ of 5~8 milliliters/temperature of anion surfactant.
9, high speed anode oxidation process according to claim 1 is characterized in that polishing fluid and process conditions that electropolishing is used are: phosphoric acid H 3PO 460~70%, sulfuric acid H 2SO 415~20%, chromic acid 5~8%, water HO 3~5%, 70~110 ℃ of temperature, current density 15~20 peace/square decimeters, 1~3 minute time.
CN 88105586 1988-09-28 1988-09-28 The wide temperature high-speed oxidation technique of aluminum or aluminum alloy Pending CN1038132A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008064538A1 (en) * 2006-12-01 2008-06-05 Taishan City Kam Kiu Aluminium Extrusion Co., Ltd Environment friendlly method for treating the surface of an aluminum product before spary coating
CN100462483C (en) * 2006-12-21 2009-02-18 上海交通大学 Preparation method of anti-corrosion coating on the surface of aluminum matrix composite material
CN102605405A (en) * 2011-12-20 2012-07-25 中国航空工业集团公司北京航空材料研究院 Anodization method for improving protection performance of aluminum and aluminum alloy
CN106193334A (en) * 2016-09-23 2016-12-07 沈阳建筑大学 Assembling type steel structure beam through mortise and tenon type node structure and assemble method
CN106637339A (en) * 2017-01-12 2017-05-10 玉林师范学院 Preparation process of aluminum alloy having high bonding strength anode oxide film
CN111519750A (en) * 2020-04-01 2020-08-11 福莱美熙展览展示(上海)有限公司 Rapid assembly system and assembly method thereof
CN114016107A (en) * 2021-11-08 2022-02-08 佛山科学技术学院 Environmentally friendly and wide temperature aluminum alloy anodic oxidation electrolyte and its preparation method and application

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008064538A1 (en) * 2006-12-01 2008-06-05 Taishan City Kam Kiu Aluminium Extrusion Co., Ltd Environment friendlly method for treating the surface of an aluminum product before spary coating
CN100462483C (en) * 2006-12-21 2009-02-18 上海交通大学 Preparation method of anti-corrosion coating on the surface of aluminum matrix composite material
CN102605405A (en) * 2011-12-20 2012-07-25 中国航空工业集团公司北京航空材料研究院 Anodization method for improving protection performance of aluminum and aluminum alloy
CN106193334A (en) * 2016-09-23 2016-12-07 沈阳建筑大学 Assembling type steel structure beam through mortise and tenon type node structure and assemble method
CN106193334B (en) * 2016-09-23 2018-06-29 沈阳建筑大学 Assembling type steel structure beam penetrates through mortise and tenon type node structure and assemble method
CN106637339A (en) * 2017-01-12 2017-05-10 玉林师范学院 Preparation process of aluminum alloy having high bonding strength anode oxide film
CN111519750A (en) * 2020-04-01 2020-08-11 福莱美熙展览展示(上海)有限公司 Rapid assembly system and assembly method thereof
CN111519750B (en) * 2020-04-01 2021-06-11 福莱美熙展览展示(上海)有限公司 Rapid assembly system and assembly method thereof
CN114016107A (en) * 2021-11-08 2022-02-08 佛山科学技术学院 Environmentally friendly and wide temperature aluminum alloy anodic oxidation electrolyte and its preparation method and application
CN114016107B (en) * 2021-11-08 2023-03-14 佛山科学技术学院 Environment-friendly wide-temperature aluminum alloy anodic oxidation electrolyte and preparation method and application thereof

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