Chromium-containing treating fluid for stabilization of bare steel rust layer

A technology for treating liquid and rust layer, which is applied in the coating process of metal materials, etc., can solve the problems of rust liquid sag on bare steel rust layer, and achieve the effects of promoting formation, excellent sag performance, and excellent corrosion resistance

Inactive Publication Date: 2015-09-23
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0003] The object of the present invention is to provide a chromium-containing treatment solution for stabilizing the rust layer of bare steel, which can effectively solve the problems of stabilizing the rust layer of bare steel and hanging rust solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A chromium-containing treatment solution used for stabilizing the rust layer of bare steel, its components are by weight percentage, sodium dichromate accounts for 0.5%, NaHSO 3 3% FeSO 4 1% FeCl 3 2%, acetic acid 0.1%, triethanolamine 0.5%, water 92.9%.

Embodiment 2

[0014] A chromium-containing treatment solution used for stabilizing the rust layer of bare steel, its components are by weight percentage, sodium dichromate accounts for 5%, NaHSO 3 0.1%, FeSO 4 0.1%, FeCl 3 0.1%, acetic acid 1%, triethanolamine 0.1%, water 93.6%.

Embodiment 3

[0016] A chromium-containing treatment solution used for stabilizing the rust layer of bare steel, its components are by weight percentage, sodium dichromate accounts for 3%, NaHSO 3 0.5%, FeSO 4 2% FeCl 3 0.5%, acetic acid 0.8%, triethanolamine 0.4%, water 92.8%.

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PUM

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Abstract

The invention provides chromium-containing treating fluid for stabilization of a bare steel rust layer. The chromium-containing treating fluid is composed of, by weight, 0.5%-5% of sodium bichromate, 0.1%-3% of NaHSO3, 0.1%-2% of FeSO4, 0.1%-2% of FeCl3, 0.1%-1% of acetic acid, 0.1%-0.5% of triethanolamine, and the balance water. The chromium-containing treating fluid has good performance of preventing sagging of rust fluid; after the chromium-containing treating fluid is sprayed on the surface of a weathering resistant steel plain sample with oxide scale being removed, formation of a stable rust layer is promoted, and the rust layer has good corrosion resistance and is suitable for coating of bare steel.

Description

technical field [0001] The invention belongs to the technical field of metal protection, and specifically refers to a chromium-containing treatment solution for stabilizing the rust layer of bare steel. Background technique [0002] Metal corrosion is a failure process of metals under the action of environmental corrosive media. It is a completely spontaneous and inevitable natural phenomenon, and it is the reverse process of metallurgical production. Atmospheric corrosion is an important cause of early failure and destruction of products, equipment, devices, and structural parts. The annual economic loss caused by atmospheric corrosion is extremely alarming. In the atmospheric natural environment, the formation of a stable protective rust layer on bare steel is a gradual process, which takes a long time, at least 3 years, and some bare steel surfaces form a dense and stable rust layer for more than 10 years. In the process of forming a stable rust layer, the phenomenon of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/24
Inventor 黄先球程鹏郎丰军庞涛马颖何锐刘建容王辉李安平周桂峰
Owner 武汉钢铁有限公司
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