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High temperature corrosion and high humidity corrosion resisting agent coating surface of bare steel, and preparation method of high temperature corrosion and high humidity corrosion resisting agent

A kind of corrosive agent and high temperature resistant technology, which is applied in the field of high temperature and high humidity resistant corrosive agent and its preparation, to achieve the effect of excellent anti-rust liquid sagging performance, promoting the formation of stable rust layer, and excellent anti-corrosion performance

Inactive Publication Date: 2016-08-31
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no high-temperature and high-humidity resistant etchant on the market, so there is an urgent need for a high-temperature and high-humidity resistant etchant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 0.3% sodium tripolyphosphate, 2% copper sulfate, 0.1% sodium tungstate, 0.1% fluozirconic acid, 1% phytic acid, 1% sodium silicate and 5.5% water ; These raw materials are uniformly mixed to prepare a high temperature and high humidity corrosion agent 1.

[0027] Spray the prepared high-temperature and high-humidity corrosion agent 1 on the surface of the weather-resistant steel bare sample from which the scale has been removed, and after natural drying, repeat the spraying twice. Under distilled water environment (temperature is 50 ℃) accelerated corrosion for 10 days (spray distilled water every 3 hours), the color of the rust layer on the surface of the untreated weathering steel bare sample is uneven, and the rust liquid hangs, and the corrosion rate increases with time. The time increases and increases; the color of the rust layer on the surface of the weathering steel bare sample coated with high temperature and high humidity corrosion agent is uniform, the ...

Embodiment 2

[0029] Weigh 2% sodium tripolyphosphate, 0.3% copper sulfate, 1% sodium tungstate, 0.5% fluozirconic acid, 0.1% phytic acid, 0.5% sodium silicate and 5.6% Water; these raw materials are evenly mixed to prepare high temperature and high humidity corrosion agent 2.

[0030] Spray the prepared high-temperature and high-humidity corrosion agent 2 on the surface of the weather-resistant steel bare sample from which the scale has been removed, and after natural drying, repeat the spraying twice. Under distilled water environment (temperature is 50 ℃) accelerated corrosion for 10 days (spray distilled water every 3 hours), the color of the rust layer on the surface of the untreated weathering steel bare sample is uneven, and the rust liquid hangs, and the corrosion rate increases with time. The time increases and increases; the color of the rust layer on the surface of the weathering steel bare sample coated with high temperature and high humidity corrosion agent is uniform, the rust...

Embodiment 3

[0032] Weigh 1.1% sodium tripolyphosphate, 1.1% copper sulfate, 0.5% sodium tungstate, 1% fluozirconic acid, 0.5% phytic acid, 0.1% sodium silicate and 95.7% Water; these raw materials are evenly mixed to prepare high temperature and high humidity corrosion agent 3.

[0033] Spray the prepared high-temperature and high-humidity corrosion agent 3 on the surface of the weather-resistant steel bare sample from which the scale has been removed, and after natural drying, repeat the spraying twice. Under distilled water environment (temperature is 50 ℃) accelerated corrosion for 10 days (spray distilled water every 3 hours), the color of the rust layer on the surface of the untreated weathering steel bare sample is uneven, and the rust liquid hangs, and the corrosion rate increases with time. The time increases and increases; the color of the rust layer on the surface of the weathering steel bare sample coated with high temperature and high humidity corrosion agent is uniform, the r...

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PUM

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Abstract

The invention discloses a high temperature corrosion and high humidity corrosion resisting agent coating the surface of bare steel, and a preparation method of the high temperature corrosion and high humidity corrosion resisting agent. The acid rain corrosion resisting agent includes, by weight, 0.3%-2% of sodium tripolyphosphate, 0.3%-2% of copper sulfate, 0.1%-1% of sodium tungstate, 0.1%-1% of hexafluorozirconic acid, 0.1%-1% of phytic acid, 0.1%-1% of sodium silicate, and the balance water. The high temperature corrosion and high humidity corrosion resisting agent can be prepared by evenly mixing the sodium tripolyphosphate, the copper sulfate, the sodium tungstate, the hexafluorozirconic acid, the phytic acid, the sodium silicate and water. The high temperature corrosion and high humidity corrosion resisting agent coating the surface of the bare steel is free of strong irritating odor and chrome, and has excellent rust liquid sagging prevention performance. After the high temperature corrosion and high humidity corrosion resisting agent coating the surface of the bare steel is sprayed to the surface of a bare weather-resistant steel sample with oxide skin removed, a rust layer has excellent corrosion resistance.

Description

technical field [0001] The invention relates to a protective agent, in particular to a high-temperature and high-humidity resistant corrosion agent for coating bare steel surfaces and a preparation method thereof. Background technique [0002] Metal corrosion is a failure process of metals under the action of environmental corrosive media. It is the inverse process of metallurgical production, and the entropy is constantly increasing. It is an inevitable natural phenomenon that occurs completely spontaneously. 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. [0003] 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 yea...

Claims

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Application Information

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IPC IPC(8): C23C22/44
CPCC23C22/44
Inventor 黄先球庞涛彭浩郎丰军马颖程鹏宋建红王辉李安平姜涛
Owner 武汉钢铁有限公司
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