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Stainless steel acid-pickling passivator

A passivating agent and stainless steel technology, which is applied in the coating process of metal materials, etc., can solve the problems of decreased corrosion resistance of the coating, environmental pollution, etc., achieve a good removal rate, and prevent the effect of reproducing oxides

Inactive Publication Date: 2017-05-10
汤彬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to environmental pollution caused by chromic acid, in some occasions, the product requires silver white or blue-white, and the iridescent passivation film formed after three-acid passivation treatment can also be bleached with lye (white passivation) , but the corrosion resistance of the coating decreases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0012] In terms of parts by mass, it includes the following components: 5 parts of sodium dodecylbenzenesulfonate, 10 parts of acetic anhydride, 5 parts of disodium hydrogen phosphate, 20 parts of sodium zinc phosphate, 10 parts of magnesium nitrate, and octyl epoxy stearate 4 parts, 15 parts of sodium nitrate, 8 parts of sodium phenylate, 4 parts of calcium chloride.

Embodiment approach 2

[0014] In terms of parts by mass, it includes the following components: 10 parts of sodium dodecylbenzenesulfonate, 15 parts of acetic anhydride, 12 parts of disodium hydrogen phosphate, 30 parts of sodium zinc phosphate, 20 parts of magnesium nitrate, and octyl epoxy stearate 10 parts, 25 parts of sodium nitrate, 15 parts of sodium benzoate, 9 parts of calcium chloride.

Embodiment approach 3

[0016] In terms of parts by mass, it includes the following components: 8 parts of sodium dodecylbenzenesulfonate, 11 parts of acetic anhydride, 8 parts of disodium hydrogen phosphate, 22 parts of sodium zinc phosphate, 12 parts of magnesium nitrate, and octyl epoxy stearate 5 parts, 18 parts of sodium nitrate, 10 parts of sodium phenylate, 5 parts of calcium chloride.

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PUM

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Abstract

The invention relates to a stainless steel acid-pickling passivator, belonging to the technical field of passivators. The stainless steel acid-pickling passivator comprises the following components in parts by mass: 5-10 parts of sodium dodecyl benzene sulfonate, 10-15 parts of acetic anhydride, 5-12 parts of disodium hydrogen phosphate, 20-30 parts of sodium zinc phosphate, 10-20 parts of magnesium nitrate, 4-10 parts of octyl epoxy stearate, 15-25 parts of sodium nitrate, 8-15 parts of phenyl perborate, and 4-9 parts of calcium chloride. The stainless steel acid-pickling passivator has excellent clearance rate, and can form a compact oxide film on the stainless steel surface to protect the stainless steel for a long time, thereby avoiding generating the oxides again on the surface.

Description

technical field [0001] The invention relates to the technical field of passivating agents, in particular to a stainless steel pickling passivating agent. Background technique [0002] Passivation solution is a solution that can make the metal surface passivate. Generally used for post-plating treatment of galvanized, cadmium and other coatings. The purpose is to form a surface state on the surface of the coating that can prevent the normal reaction of the metal, improve its corrosion resistance, and increase the appearance of the product. Through formula analysis, it can be seen that the main components of commonly used passivation solutions are chromic acid, nitric acid, and sulfuric acid. However, due to environmental pollution caused by chromic acid, in some occasions, the product requires silver white or blue-white, and the iridescent passivation film formed after three-acid passivation treatment can also be bleached with lye (white passivation) , but the corrosion re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/08C23C22/07
Inventor 汤彬
Owner 汤彬