CN103014807A - Aluminum material surface hardening and corrosion prevention technology - Google Patents
Aluminum material surface hardening and corrosion prevention technology Download PDFInfo
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- CN103014807A CN103014807A CN 201110288592 CN201110288592A CN103014807A CN 103014807 A CN103014807 A CN 103014807A CN 201110288592 CN201110288592 CN 201110288592 CN 201110288592 A CN201110288592 A CN 201110288592A CN 103014807 A CN103014807 A CN 103014807A
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Abstract
The invention relates to an aluminum material surface hardening and corrosion prevention technology which is particularly suitable for the surface corrosion prevention and hardening treatment of a high-strength aluminum alloy, belonging to the surface treatment technology of metal materials. Through the invention, an aluminum alloy blank is subjected to surface pretreatment including degreasing, alkali cleaning and neutralization; the concentration of free oxalic acid in electrolyte is 3-5%; and anodic oxidation treatment is carried out under the conditions of taking lead oxide as an anode and taking graphite or stainless steel as a cathode. Through the invention, the prepared aluminum alloy plate has the advantages of strong corrosion resistance, high surface hardness and the like.
Description
Technical field
The present invention relates to a kind of aluminabased material surface hardening and anticorrosion process, be particularly useful for aldural surface anticorrosion and hardening treatment, belong to the metal material surface treatment technology.
Background technology
All the time, aluminabased material and alloy material thereof occupy critical role in industrial and agricultural production, and still, this material also is accompanied with some shortcomings that are difficult to overcome, and namely bad mechanical strength, resistance to chemical corrosion are poor, and quality is soft not wear-resisting etc.At present, alloy product surface anticorrosion quality and hardening treatment adopt overlay coating to process, and are commonly called as anodic oxidation.Therefore, the surperficial anti-corruption of raising aluminum plate material and sclerosis are the product urgent problems that uses aluminabased material.
Summary of the invention
The object of the present invention is to provide a kind of aluminabased material surface hardening and anticorrosion process, it has improved aldural surface anticorrosion and technique for hardening treatment.
To achieve these goals, the present invention adopts technical scheme to comprise:
1. surface preparation
The one, degreasing:
A. use an amount of gasoline as organic solvent, the pending surface of aluminium alloy cleaned,
B. water, the aluminic acid solution that aluminium alloy was placed 1: 0.2 carried out oil removing 5-10 minute,
C. clean with flushing with clean water;
The 2nd, alkali cleaning:
A. aluminium alloy is placed water, the sodium hydroxide solution of the ratio proportioning that adopts 1: 0.25 to wash 1-2 minute;
B. clean with flushing with clean water;
The 3rd, neutralization:
A. aluminium alloy is placed under the 300-400g/L salpeter solution room temperature and embathed 3-5 minute,
B. clean with flushing with clean water;
2. anodic oxidation treatment
The one, proportioning electrolytic solution:
Preparation electrolytic solution Free Oxalic Acid concentration is 3%-5%;
The 2nd, make anode and cathode:
The direct current anode is selected plumbous oxide, and graphite or stainless steel are done negative electrode, and with the Area Ratio of anode be 1: 1-2.
The advantages such as the present invention has the technique advanced person, and the aluminium alloy erosion resistance of producing is strong, surface hardness is large.
Embodiment
Become board size to determine aluminium base material size by the complicated hole of aldural assembly, as get long for 27cm, wide for 25cm, thickly be the aluminium alloy plate of 2.5cm, with an amount of gasoline the pending surface of aluminium alloy is cleaned, behind gasoline volatilization, use again the water of 1: 0.2 ratio to convert aluminic acid immersion oil removing 5-10 minute, clean with flushing with clean water.Use water, the sodium hydroxide solution of 1: 0.25 ratio proportioning to wash 1-2 minute, flushing with clean water is clean again.Aluminium alloy after above-mentioned processing is crossed on ground is placed the 300-400g/L salpeter solution, embathed under the room temperature 3-5 minute,, clean with flushing with clean water.Then aluminium alloy being placed free concentration of oxalic acid is the electrolytic solution of 3%-5%, and anode is that plumbous oxide, graphite or stainless steel are done and carried out the anodic oxygen polarization in the environment of negative electrode and process.The method can make the aluminum oxide film layer thickness can reach more than 150 microns, aluminium alloy after the anodic oxidation, its hardness and wear resistance have been improved, surpass 450 kilograms/square millimeter, good thermotolerance, the hard anodized film fusing point is up to 2320K, good insulativity, breakdown voltage resistant up to 2000V, strengthened corrosion resistance, in ω=0.03NaCl salt fog, do not corrode through 2,000 hours.
Claims (1)
1. an aluminabased material surface hardening and anticorrosion process is characterized in that:
(1) surface preparation
The one, degreasing:
A. use an amount of gasoline as organic solvent, the pending surface of aluminium alloy cleaned,
B. water, the aluminic acid solution that aluminium alloy was placed 1: 0.2 carried out oil removing 5-10 minute,
C. clean with flushing with clean water;
The 2nd, alkali cleaning:
A. aluminium alloy is placed water, the sodium hydroxide solution of the ratio proportioning that adopts 1: 0.25 to wash 1-2 minute;
B. clean with flushing with clean water;
The 3rd, neutralization:
A. aluminium alloy is placed under the 300-400g/L salpeter solution room temperature and embathed 3-5 minute,
B. clean with flushing with clean water;
(2) anodic oxidation treatment
The one, proportioning electrolytic solution:
Preparation electrolytic solution Free Oxalic Acid concentration is 3%-5%;
The 2nd, make anode and cathode:
The direct current anode is selected plumbous oxide, and graphite or stainless steel are done negative electrode, and with the Area Ratio of anode be 1: 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110288592 CN103014807A (en) | 2011-09-21 | 2011-09-21 | Aluminum material surface hardening and corrosion prevention technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110288592 CN103014807A (en) | 2011-09-21 | 2011-09-21 | Aluminum material surface hardening and corrosion prevention technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103014807A true CN103014807A (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110288592 Pending CN103014807A (en) | 2011-09-21 | 2011-09-21 | Aluminum material surface hardening and corrosion prevention technology |
Country Status (1)
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| CN (1) | CN103014807A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131323A (en) * | 2014-07-18 | 2014-11-05 | 安徽铖友汽车零部件制造有限公司 | Oxidation treatment method for hard and brittle hard and brittle duralumin |
| CN105442018A (en) * | 2015-10-26 | 2016-03-30 | 安徽长安专用汽车制造有限公司 | Conductive oxidation process for automobile aluminum alloy parts |
| CN105926018A (en) * | 2016-07-12 | 2016-09-07 | 长春奥生汽车零部件有限责任公司 | Aluminum alloy surface strengthening treatment method |
| CN108624932A (en) * | 2018-08-01 | 2018-10-09 | 苏州嘉迈德电子科技有限公司 | A kind of preparation method of corrosive protection of aluminium alloy coating |
-
2011
- 2011-09-21 CN CN 201110288592 patent/CN103014807A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131323A (en) * | 2014-07-18 | 2014-11-05 | 安徽铖友汽车零部件制造有限公司 | Oxidation treatment method for hard and brittle hard and brittle duralumin |
| CN105442018A (en) * | 2015-10-26 | 2016-03-30 | 安徽长安专用汽车制造有限公司 | Conductive oxidation process for automobile aluminum alloy parts |
| CN105442018B (en) * | 2015-10-26 | 2018-08-14 | 安徽长安专用汽车制造有限公司 | Conductive oxidation process for automobile aluminum alloy parts |
| CN105926018A (en) * | 2016-07-12 | 2016-09-07 | 长春奥生汽车零部件有限责任公司 | Aluminum alloy surface strengthening treatment method |
| CN108624932A (en) * | 2018-08-01 | 2018-10-09 | 苏州嘉迈德电子科技有限公司 | A kind of preparation method of corrosive protection of aluminium alloy coating |
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Application publication date: 20130403 |