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Technology for surface treatment of double-layered stainless steel product

A surface treatment and stainless steel technology, which is applied in the surface treatment process of double-layer stainless steel products and the field of stainless steel products, can solve the problems of destroying the vacuum effect of the products, the appearance is dull and dull, and the cost is high, so as to achieve reasonable preparation, clean surface and low cost Effect

Inactive Publication Date: 2013-03-27
昆山浦力真空科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, people usually use sand blasting and general chemical or electrochemical methods to remove the oxide film on the surface of double-layer stainless steel products. However, the method of sand blasting can remove the oxide film, but the cost is high, and the appearance is dull. Chemical or electrochemical treatment, because the solution strongly corrodes the weld seam of the product, it is easy to damage the vacuum effect of the product

Method used

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  • Technology for surface treatment of double-layered stainless steel product

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Effect test

Embodiment 1

[0015] The specific implementation steps are as follows:

[0016] a) Selection of whitening raw materials. The whitening raw materials selected for the surface treatment of the double-layer stainless steel products include: 400g / L sodium hydroxide solution, 80g / L nitric acid with a concentration of 63%, and 100g / L hydrofluoric acid with a concentration of 40%. , a concentration of 98% phosphoric acid 130g / L, a pickling corrosion inhibitor with a weight ratio of 0.1%; among them, the pickling corrosion inhibitor is a solid powder with stable performance, simple operation, small dosage, high efficiency, low cost, and no Toxic and odorless, no pollution to the environment; little corrosion to the metal substrate, high corrosion inhibition rate, safe to use.

[0017] b) Whitening treatment, whitening treatment includes the following steps: 1) Alkali washing treatment, the oxide film formed on the surface of the double-layer stainless steel product becomes loose after alkali washin...

Embodiment 2

[0021] The specific implementation steps are as follows:

[0022] a) Selection of whitening raw materials, the whitening raw materials selected for the surface treatment of the double-layer stainless steel products include: sodium hydroxide solution 500g / L, nitric acid with a concentration of 63% 120g / L, hydrofluoric acid with a concentration of 40% 150g / L , a concentration of 98% phosphoric acid 160g / L, a pickling corrosion inhibitor with a weight ratio of 0.2%; among them, the pickling corrosion inhibitor is a solid powder with stable performance, simple operation, small dosage, high efficiency, low cost, and no Toxic and odorless, no pollution to the environment; little corrosion to the metal substrate, high corrosion inhibition rate, safe to use.

[0023] b) Whitening treatment, the whitening treatment includes the following steps: 1) Alkali washing treatment, the oxide film formed on the surface of the double-layer stainless steel product becomes loose after alkali washin...

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Abstract

The invention discloses a technology for surface treatment of a double-layered stainless steel product. The technology for the surface treatment comprises the following steps: a, whitening raw material selecting and blending; b, whitening treating; c, brightening raw material selecting and blending; and d, brightening treating. The invention discloses the technology for the surface treatment of the double-layered stainless steel product. The technology for the surface treatment adopts a chemical treatment method and is simple in technological method, the selected chemical raw materials are prepared reasonably and are low in cost, and the double-layered stainless steel product after surface treatment not only has a clean, white and bright surface and but also has the original vacuum degree which is not damaged at all.

Description

technical field [0001] The invention relates to a stainless steel product, in particular to a surface treatment process of a double-layer stainless steel product, and belongs to the technical field of metal processing. Background technique [0002] In the metal processing industry, after vacuuming many double-layer stainless steel products such as vacuum flasks, a very thin layer of yellow-brown high-temperature oxide film is often formed on the surface, which affects the appearance and hygiene of the product. The yellow film formed by vacuuming is generally There are iron oxide, chromium oxide, ferric oxide, etc. These oxide films remaining on the surface of double-layer stainless steel products must be removed. [0003] At present, people usually use sand blasting and general chemical or electrochemical methods to remove the oxide film on the surface of double-layer stainless steel products. However, the method of sand blasting can remove the oxide film, but the cost is hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/16C23G1/04C23G1/08C23G1/19C23F3/06
Inventor 成军
Owner 昆山浦力真空科技有限公司
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