Differential arc oxidization abrasive polishing method for stainless steel surface

A technology of micro-arc oxidation and stainless steel, which is applied in the direction of anodic oxidation, etc., can solve the problems that ordinary stainless steel cannot meet the performance requirements, pitting corrosion, and high cost of stainless steel materials, so as to improve the protection performance and application field, and the process is stable and reliable, and easy to master Effect

Inactive Publication Date: 2006-02-22
江门市福斯特金属表面处理技术发展有限公司
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Problems solved by technology

[0002] Ordinary stainless steel materials have good corrosion resistance "stainless" performance in water, steam and air, but in many corrosive media such as Cl - , SO 4 2- It is easy to form pitting corrosion, pitting corrosion, crevice corrosion, etc. in the medium, so ordinary stainless steel cannot meet the performance requirements of more and more fields such as chemical industry, food, biopharmaceutical, etc.
Although it is now known that stainless steel with high nickel content has better oxidation resistance, so that it can achieve the expected "stainless" purpose, thereby expanding the application field of ordinary stainless steel materials, but due to the lack of resources of raw material nickel, resulting in high nickel content The cost of stainless steel material is higher
People generally use the method of oxidizing the surface of stainless steel to improve the corrosion resistance of stainless steel, but the effect is not very satisfactory.

Method used

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Embodiment

[0016] The micro-arc oxidation grinding and polishing method for the surface of stainless steel of the present invention is first to mechanically polish the surface of the stainless steel product, then perform degreasing treatment, then clean the stainless steel product after the degreasing treatment, and then place the stainless steel product in the electrolyte solution, Turn on the sine wave commutation power supply, apply a voltage of 20-300V on the stainless steel product at a temperature of 20-35°C, and form a micro-arc discharge on the surface of the workpiece, so that the surface of the stainless steel product interacts with the electrolyte solution, resulting in dissolution and The reversible reaction of passivation, so that the protruding part of the stainless steel surface is dissolved to play the role of grinding and polishing, and at the same time, a layer of metal oxide film with hardness, heat resistance and corrosion resistance similar to ceramics is formed on the...

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Abstract

The invention discloses a polishing method of non-corrosive steel surface by differential arc. The invention comprises the following steps: exerting mechanically polishing and degreasing on surface of stainless steel products; cleaning it; placing said stainless steel products in electrolyte solution and intensifying reaction near anode to form intensified oxidation film on it by using sine-wave differential arc that is generated by sine-wave current; cleaning and drying it. The invention resolves the previous problem that differential arc oxidization can not be processed on surface of stainless steel watch.

Description

technical field [0001] The invention relates to a stainless steel surface treatment method, in particular to a method for forming a reinforced oxide film on the stainless steel surface. Background technique [0002] Ordinary stainless steel materials have good corrosion resistance "stainless" performance in water, steam and air, but in many corrosive media such as Cl - , SO 4 2- Pitting corrosion, pitting corrosion, crevice corrosion, etc. are easy to form in the medium, so ordinary stainless steel cannot meet the performance requirements of more and more fields such as chemical industry, food, and biopharmaceuticals. Although it is now known that stainless steel with high nickel content has better oxidation resistance, which can achieve the expected "stainless" purpose and expand the application field of ordinary stainless steel materials, due to the lack of raw material nickel resources, resulting in high nickel content The cost of stainless steel materials is relativel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/34
Inventor 梁伟平
Owner 江门市福斯特金属表面处理技术发展有限公司
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