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Stainless steel pickling passivation paste and preparation method thereof

A pickling passivation, stainless steel technology, applied in the direction of metal material coating process, can solve pollution and other problems, and achieve the effect of less environmental damage

Inactive Publication Date: 2013-07-31
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to provide a safe, environmentally friendly, highly efficient and stable stainless steel pickling passivation paste and its preparation method. The pickling passivation paste does not release hydrogen fluoride during operation, which reduces the harm to the human body. It solves the long-standing hydrogen fluoride pollution problem in the stainless steel pickling passivation process, and the raw materials of the pickling passivation paste are all water-soluble substances, which is easy and quick to clean and has no secondary pollution problem

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0011] Weigh the raw materials (kg) according to the following proportions:

[0012] 1. Fluorosilicic acid 10, nitric acid 60, polyethyleneimine 30, magnesium fluorosilicate 40, fatty alcohol polyoxyethylene ether 1;

[0013] 2. Fluorosilicic acid 10, nitric acid 30, polyethyleneimine 20, magnesium fluorosilicate 35, alkyl alcohol polyoxyethylene ether 3;

[0014] 3. Fluorosilicic acid 30, nitric acid 20, polyethyleneimine 10, magnesium fluorosilicate 60, coconut oil fatty acid diethanolamide 5.

[0015] The production method is as follows:

[0016] The weighed raw materials are added to the polytetrafluoroethylene reactor, and the crosslinking agent epichlorohydrin is added after stirring and dissolving, wherein the addition of epichlorohydrin is 10%-20% of the polyethyleneimine weight, and the stirring is continued. After 20 minutes, it was poured into a small packaging bottle of 1 kg, and after standing for 1 hour, it was in a jelly-like shape, and the preparation of the ...

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PUM

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Abstract

The invention discloses a stainless steel pickling passivation paste and a preparation method thereof. The technical point of the invention is that: the stainless steel pickling passivation paste is mainly composed of, by weight, 10-30 parts of a corrosion agent, 20-60 parts of a passivation agent, 10-30 parts of a gelling agent, 40-60 parts of an inorganic filling material, and 1-5 parts of a penetration agent. The invention also discloses a preparation method of the stainless steel pickling passivation paste. During an application process, the stainless steel pickling passivation paste does not release hydrofluoric acid, causes low harm to the environment, and does not harm the skin. Therefore, worker health is ensured, and various welds, oxide scales and rust on the surface of stainless steel can be effectively removed. The stainless steel pickling passivation paste is a green, environment-friendly, and highly efficient product.

Description

Technical field [0001] The invention relates to the technical field of pickling and passivation, and in particular to a stainless steel pickling passivation paste and a preparation method thereof. Background technique [0002] During the processing of stainless steel, surface defects and corrosion hazards will occur, such as black oxide scale and other metal compounds, yellow weld seams, and grease during cold drawing. In order to improve the appearance and corrosion resistance of stainless steel, the processed stainless steel must be acidified. Wash and passivate. At present, the main raw materials for the production of stainless steel pickling passivation paste are hydrofluoric acid and nitric acid (such as patent CN 86101522). These products will release hydrogen fluoride during use, which can easily burn human skin and retina, and are not good for the health of construction workers. , especially in relatively closed construction environments (such as reactors, distillat...

Claims

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Application Information

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IPC IPC(8): C23G1/08C23C22/50
CPCC23G1/025
Inventor 陈得军田进军李凌军朱安莲
Owner HENAN NORMAL UNIV
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