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Environment-friendly blackening solution

An environmentally friendly and compositional technology, applied in the direction of metal material coating process, etc., can solve the problems of environmental pollution, long time, minutes to ten minutes, etc., and achieve the effect of no pollution to the environment, simple production and strong binding force

Inactive Publication Date: 2016-06-15
CHONGQING GUIKUN MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Potassium dichromate and sulfuric acid are commonly used as blackening agents for stainless steel in the prior art. The blackening agent contains potassium dichromate, which pollutes the environment and requires heating. The blackening time takes several minutes to ten minutes, which takes a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: an environment-friendly blackening liquid, each composition is proportioned according to the following parts by weight: 10-15 parts of copper sulfate pentahydrate, 4-7 parts of potassium pyrophosphate, 8-12 parts of nickel sulfate tetrahydrate, 3-5 parts of ammonium molybdate, 6-8 parts of alkylphenol polyoxyethylene ether, 70-100 parts of distilled water, 9-14 parts of cerium sulfate.

Embodiment 2

[0010] Embodiment 2: described a kind of environment-friendly type blackening liquid, each constituent is proportioned according to the following parts by weight: 12 parts of copper sulfate pentahydrate, 6 parts of potassium pyrophosphate, 11 parts of nickel sulfate tetrahydrate, ammonium molybdate 4 parts, 7 parts of alkylphenol polyoxyethylene ether, 89 parts of distilled water, 12 parts of cerium sulfate.

[0011] The present invention has the following advantages and beneficial effects: adopting an environment-friendly blackening liquid of the present invention, the pH value of the liquid is 2.5-3.0, the blackening time is 5-7mins, and the use temperature is normal temperature. The agent has a binding force with the substrate Strong, corrosion-resistant, simple production, use at room temperature, no pollution to the environment, etc.

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PUM

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Abstract

The invention discloses an environment-friendly blackening solution. The solution is characterized by being composed of, by weight, 10-15 parts of copper sulfate pentahydrate, 4-7 parts of potassium pyrophosphate, 8-12 parts of nickel sulfate tetrahydrate, 3-5 parts of ammonium molybdate, 6-8 parts of alkylphenol ethoxylates, 70-100 parts of distilled water and 9-14 parts of cerous sulfate. According to the environment-friendly blackening solution, the PH value of the solution is 2.5-3.0, blackening time is 5-7 min, and the solution is used at the normal temperature and has the advantages of being high in binding force with a base body, resistant to corrosion, simple in production, capable of being used at the normal temperature, free of environment pollution and the like.

Description

technical field [0001] The invention relates to an environment-friendly blackening liquid. Background technique [0002] With the continuous improvement of people's needs, the stainless steel whose surface has been oxidized and blackened is widely used in many fields such as electronics industry, architectural decoration, kitchen utensils, instruments and meters, automobile industry, chemical equipment, sign printing and aerospace military industry. As a stainless steel coloring technology, stainless steel oxidation blackening has begun to attract people's attention. Potassium dichromate and sulfuric acid are commonly used as blackening agents for stainless steel in the prior art. The blackening agent contains potassium dichromate, which pollutes the environment and requires heating. The blackening time takes several minutes to more than ten minutes, which takes a long time. SUMMARY OF THE INVENTION [0003] In view of the deficiencies in the above-mentioned technologies,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/42
Inventor 钟传梅
Owner CHONGQING GUIKUN MACHINERY CO LTD