Aluminum alloy material surface phosphating process

A technology of aluminum alloy materials and processing technology, which is applied in the field of material processing, can solve the problems of low phosphating film quality, long processing time, and high cost, and achieve the effects of improving surface treatment quality, improving bonding stability, and improving compactness

CN107245708AInactive Publication Date: 2017-10-13安徽省金寨县新诚机械制造有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-10-13
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses an aluminum alloy material surface phosphating process. The aluminum alloy material surface phosphating process comprises the following steps that (1) surface pretreatment is carried out; (2) phosphating liquid is prepared; and (3) phosphating is carried out. According to the phosphating process, the surface treatment quality of an aluminum alloy material is effectively improved, the phosphating film forming speed, thickness, uniformity, compactness and the like are all well improved, the corrosion-resistance characteristic of the aluminum alloy material is strengthened, the bonding stability of the aluminum alloy material and coating is improved, and the very good using and popularizing value is achieved.
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Description

technical field

[0001] The invention belongs to the technical field of material processing, and in particular relates to a phosphating treatment process for the surface of an aluminum alloy material. Background technique

[0002] The mechanical strength of pure aluminum is low. For this reason, elements such as magnesium, zinc, copper, silicon and manganese are often added to modify it. The mechanical strength of the modified aluminum alloy increases, but the corrosion resistance decreases. For this purpose, surface treatment of aluminum alloy is required. At present, the traditional anodic oxidation method and chromate technology are relatively mature, but the former requires large investment and high cost; Use in surface treatment. Chromium-free phosphating treatment technology is one of the more common technologies in the surface treatment of aluminum alloy materials. It has the advantages of environmental friendliness and simple treatment process. Advanced problems, s...

Examples

Embodiment 1

[0025] A surface phosphating treatment process for an aluminum alloy material, comprising the steps of:

[0026] (1) Surface pretreatment:

[0027] a. Use 200-mesh sandpaper to polish the surface of the aluminum alloy material to be processed, and rinse off the debris on the surface with clean water after completion;

[0028] b. Immerse the aluminum alloy material treated in operation a into the degreasing solution for degreasing and degreasing treatment, heat to keep the temperature of the degreasing solution at 35°C, soak the aluminum alloy material for 40 minutes and then take it out for later use. The substances in the oil and their parts by weight are: 1 part of sodium pyrophosphate, 2 parts of alkylphenol polyoxyethylene ether, 10 parts of acetone, and 100 parts of water;

[0029] c. Rinse the surface of the aluminum alloy material after operation b with clean water, and then drain the surface moisture for later use;

[0030] (2) Preparation of phosphating treatment so...

Embodiment 2

[0042] A surface phosphating treatment process for an aluminum alloy material, comprising the steps of:

[0043] (1) Surface pretreatment:

[0044] a. Use 200-mesh sandpaper to polish the surface of the aluminum alloy material to be processed, and rinse off the debris on the surface with clean water after completion;

[0045] b. Immerse the aluminum alloy material treated in operation a into the degreasing liquid for degreasing and degreasing treatment, heat to keep the temperature of the degreasing liquid at 38°C, soak the aluminum alloy material for 42 minutes and take it out for later use. The substances in the oil and their parts by weight are: 2 parts of sodium pyrophosphate, 4 parts of alkylphenol polyoxyethylene ether, 12 parts of acetone, and 110 parts of water;

[0046] c. Rinse the surface of the aluminum alloy material after operation b with clean water, and then drain the surface moisture for later use;

[0047] (2) Preparation of phosphating treatment solution: ...

Embodiment 3

[0059] A surface phosphating treatment process for an aluminum alloy material, comprising the steps of:

[0060] (1) Surface pretreatment:

[0061] a. Use 200-mesh sandpaper to polish the surface of the aluminum alloy material to be processed, and rinse off the debris on the surface with clean water after completion;

[0062] b. Immerse the aluminum alloy material treated in operation a into the degreasing liquid for degreasing and degreasing treatment, heat to keep the temperature of the degreasing liquid at 40°C, take out the aluminum alloy material after soaking for 45 minutes, and set aside for later use. The substances in the oil and their parts by weight are: 4 parts of sodium pyrophosphate, 5 parts of alkylphenol polyoxyethylene ether, 14 parts of acetone, and 120 parts of water;

[0063] c. Rinse the surface of the aluminum alloy material after operation b with clean water, and then drain the surface moisture for later use;

[0064] (2) Preparation of phosphating tre...