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Aluminum alloy hardened plating layer treatment process

A treatment process, a technology for aluminum alloys, applied in the field of hardening coating treatment process of aluminum alloys, can solve problems such as large surface friction of aluminum alloys, and achieve the effects of small surface friction, improved smoothness and rust resistance.

Inactive Publication Date: 2017-01-11
ZHANGJIAGANG HUACHENG LOCOMOTIVE PRECISION PIPE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the problem that the surface friction of aluminum alloy is relatively large in the prior art, and to provide an aluminum alloy surface that affects the coating process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A hardening coating treatment process for an aluminum alloy, comprising the steps of:

[0020] Step 1: Grinding and cleaning the surface of the aluminum alloy workpiece, and then applying the base agent on the surface;

[0021] The base agent comprises 9 parts of aluminum chloride, 5 parts of magnesium chloride and 70 parts of rosin solution;

[0022] Step 2: Heating the surface of the aluminum alloy obtained in Step 1 and adding oxygen at a heating temperature of 400°C for 1 hour;

[0023] The concentration of oxygen is 65%;

[0024] Step 3: The aluminum alloy part obtained in Step 2 is heated at 1000° C. for 30 hours in an oxygen-barrier environment by passing sulfur oxide gas into it;

[0025] Step 4: Put the aluminum alloy parts obtained in Step 3 into electroplating anti-rust oil, and process it by ultrasonic wave for 0.5h.

Embodiment 2

[0027] A hardening coating treatment process for an aluminum alloy, comprising the steps of:

[0028] Step 1: Grinding and cleaning the surface of the aluminum alloy workpiece, and then applying the base agent on the surface;

[0029] The base agent comprises 8 parts of aluminum chloride, 4 parts of magnesium chloride and 60 parts of rosin solution;

[0030] Step 2: Heating the surface of the aluminum alloy obtained in Step 1 and adding oxygen at a heating temperature of 350°C for 1 hour;

[0031] The concentration of oxygen is 60-70%;

[0032] Step 3: The aluminum alloy parts obtained in Step 2 are heated at 800° C. for 30 hours in an oxygen-barrier environment by introducing sulfur oxide gas;

[0033] Step 4: Put the aluminum alloy parts obtained in Step 3 into electroplating anti-rust oil, and process it by ultrasonic wave for 0.5h.

Embodiment 3

[0035] A hardening coating treatment process for an aluminum alloy, comprising the steps of:

[0036] Step 1: Grinding and cleaning the surface of the aluminum alloy workpiece, and then applying the base agent on the surface;

[0037] The base agent comprises 6 parts of aluminum chloride, 3 parts of magnesium chloride and 55 parts of rosin solution;

[0038] Step 2: Heating the surface of the aluminum alloy obtained in Step 1 and adding oxygen at a heating temperature of 300°C for 1 hour;

[0039] The concentration of oxygen is 62%;

[0040] Step 3: The aluminum alloy parts obtained in Step 2 are heated at 900°C for 30 hours in an oxygen-barrier environment by introducing sulfur oxide gas;

[0041] Step 4: Put the aluminum alloy parts obtained in Step 3 into electroplating anti-rust oil, and process it by ultrasonic wave for 0.5h.

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PUM

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Abstract

The invention relates to an aluminum alloy hardened plating layer treatment process. The process includes the steps of: 1, polishing and cleaning the surface of an aluminum alloy workpiece, then daubing a base agent on the surface, wherein the base agent comprises 5-10 parts of aluminum chloride, 2-6 parts of magnesium chloride and 50-80 parts of a rosin solution; 2, heating the aluminum alloy surface obtained in step 1 at 300-400DEG C for 1h, and adding oxygen with an concentration of 60-70%; and 3, introducing sulfur oxide gas to the aluminum alloy piece obtained by step 2 under an oxygen insulation condition, and carrying out heating at 800-1000DEG C for 30h. According to the invention, by means of an accelerated oxidation process, a compact mixed layer of magnesium aluminum oxide and ferroferric oxide can be obtained on the aluminum alloy surface, compared with the aluminum oxide layer of common aluminum alloy, the surface has higher density, and the surface friction is also smaller.

Description

technical field [0001] The invention relates to a hardening coating treatment process of aluminum alloy, which belongs to the surface coating process of aluminum alloy. Background technique [0002] Because of its light weight, easy processing and good rigidity, aluminum alloy is widely used in the fields of various connectors or guide sliding mechanisms. However, the oxide layer on the surface of aluminum alloy has a relatively high roughness. For sliding or rotating mechanisms, the coefficient of friction will be relatively high, which will seriously affect the accuracy and smoothness of movement of the equipment. Contents of the invention [0003] The technical problem to be solved by the present invention is: to overcome the problem of relatively high friction on the aluminum alloy surface in the prior art, and to provide an aluminum alloy surface affecting coating process. [0004] The technical solution adopted by the present invention to solve its technical problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/48
Inventor 许亚明常盛成
Owner ZHANGJIAGANG HUACHENG LOCOMOTIVE PRECISION PIPE MFG
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