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Chemical polishing method of stainless steel by high-temperature oxidation

A technology of chemical polishing and high temperature oxidation, applied in the field of surface treatment of metal parts, to achieve the effects of simple and fast process control, improved chemical polishing efficiency, and reduced labor intensity

Inactive Publication Date: 2013-04-17
中国兵器工业第二一三研究所
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Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a chemical polishing method for high-temperature oxidized stainless steel with low pollution, simple operation, high utilization rate of polishing liquid, and suitable for polishing various complex parts.

Method used

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with preferred embodiments.

[0018] The first preferred example of the present invention is chemical polishing a kind of stainless steel product with deep hole, and its deep hole length 8cm, and its polishing process comprises the following steps:

[0019] The first step, degreasing. Soak the stainless steel product in a vessel filled with gasoline for 10 minutes, then put the vessel into an ultrasonic cleaner and vibrate for 30 minutes, and then wash it with clean water; Shake and wash for 30 minutes, and then wash the stainless steel products with clean water. The mass ratio concentration of washing powder water is 10%.

[0020] The second step is to remove the scale. Pour the prepared corrosion solution into the beaker, then heat it to 80°C, pour the stainless steel product into the beaker, and keep the temperature of the corrosion solution between 70-90°C, and the continuous treatment...

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Abstract

The invention discloses a chemical polishing method of stainless steel by high-temperature oxidation, and belongs to the field of surface treatment of stainless steel parts. The method comprises the following steps: using phosphoric acid, sulfuric acid and nitric acid as main materials; supplementing additives: polyethylene glycol, sulfosalicylic acid and nicotinic acid which are used to prepare a chemical polishing liquor; introducing an ultrasonic cleaning instrument in the chemical polishing process; and polishing the surface of a stainless steel part within a short time by means of cavitation of ultrasonic wave in the polishing liquor. The chemical polishing method provided by the invention is high in polishing efficiency, less in pollution and strong in operability. Polished parts are bright and white in surface, and uniform and meticulous. The method is especially suitable for polishing treatment of stainless steel parts with precision screws, high precision sizes, deep holes, blind holes, superfine holes and complex structures.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of metal parts, and mainly relates to a method for chemically polishing the surface of stainless steel, in particular to a method for chemically polishing the surface of stainless steel parts with high-temperature oxide skin after high-temperature oxidation. Background technique [0002] With the development of my country's military industry and high-tech industries and the continuous improvement of people's living standards, parts made of stainless steel are widely used in key industries such as aerospace, aviation, weapons, nuclear power and daily life, becoming the most widely used material. one. During the manufacturing process of stainless steel parts, some products need to go through heat treatment, welding, glass-stainless steel sealing and other thermal processing processes. After high temperature treatment, a layer of taupe dense oxide layer will be formed on the surface of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F3/06
Inventor 祝捷颜宝锋闫旭姜鹏涛王海震
Owner 中国兵器工业第二一三研究所
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