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Weathering resistant steel surface stabilizing treatment agent suitable for industrial atmospheric environment and treatment method

A stabilizing treatment agent and stabilizing treatment technology, applied in the field of steel anticorrosion, can solve the problems of immature weathering steel stabilization technology, late start, no relevant standards for coating-free technology, etc. , the effect of shortening the stabilization period

Active Publication Date: 2021-11-16
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Japanese and American scholars began research and development of weathering steel surface treatment technology in the 1950s. At present, the weathering steel surface treatment technology developed abroad has weather resistance Coating technology, oxide coating treatment, rust coating nitriding treatment and new surface treatment agents, some domestic research institutions are also carrying out research on weathering steel surface stabilization treatment technology, but due to the late start in China, the impact on weathering Steel stabilization technology is still immature, and there is no relevant standard for coating-free technology

Method used

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  • Weathering resistant steel surface stabilizing treatment agent suitable for industrial atmospheric environment and treatment method
  • Weathering resistant steel surface stabilizing treatment agent suitable for industrial atmospheric environment and treatment method
  • Weathering resistant steel surface stabilizing treatment agent suitable for industrial atmospheric environment and treatment method

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Effect test

Embodiment 1

[0040] A method for stabilizing the rust layer of bridge weathering steel suitable for industrial atmospheric environments, comprising the steps of:

[0041] S1. Use Q345qNH bridge weathering steel, cut it into 10mm×10mm×8mm size by wire cutting, use sandblasting machine to remove the hot-rolled scale on the weathering steel surface, and then use 600 mesh and 800 mesh sandpaper to polish the weathering steel sample in turn The surface is smooth and flat, scrubbed with alcohol, degreased with acetone, and then dried in a vacuum oven;

[0042] S2, prepare 100g weathering steel surface rust layer stabilization treatment agent (stabilizer): take 1.0g of CuSO respectively 4 , 3.0g of Cr 2 (SO 4 ) 3 , 0.6g NaHSO 3 and 0.1 g of Fe 3 o 4 , mixed with 95.3g deionized water and then poured into the container to obtain a weathering steel surface rust layer stabilizing treatment agent (stabilizer);

[0043] S3. Immerse the weathering steel with the surface scale removed in the prep...

Embodiment 2

[0058] A method for stabilizing the rust layer of bridge weathering steel suitable for industrial atmospheric environments, comprising the steps of:

[0059] S1. Use Q345qNH bridge weathering steel, cut it into 10mm×10mm×8mm size by wire cutting, use sandblasting machine to remove the hot-rolled scale on the weathering steel surface, and then use 600 mesh and 800 mesh sandpaper to polish the weathering steel sample in turn The surface is smooth and flat, scrubbed with alcohol, degreased with acetone, and then dried in a vacuum oven;

[0060] S2, prepare 100g weathering steel surface rust layer stabilization treatment agent (stabilizer): take 0.8g CuSO respectively 4 , 3.2g of Cr 2 (SO 4 ) 3 , 0.7g of NaHSO 3 and 0.08g of Fe 3 o 4 , mixed with 95.22g deionized water and then poured into the container to obtain a weathering steel surface rust layer stabilization treatment agent (stabilizer);

[0061] S3. Immerse the weathering steel with the surface scale removed in the p...

Embodiment 3

[0064] A method for stabilizing the rust layer of bridge weathering steel suitable for industrial atmospheric environments, comprising the steps of:

[0065] S1. Use Q345qNH bridge weathering steel, cut it into 10mm×10mm×8mm size by wire cutting, use sandblasting machine to remove the hot-rolled scale on the weathering steel surface, and then use 600 mesh and 800 mesh sandpaper to polish the weathering steel sample in turn The surface is smooth and flat, scrubbed with alcohol, degreased with acetone, and then dried in a vacuum oven;

[0066] S2, prepare 100g weathering steel surface rust layer stabilization treatment agent (stabilizer): take 1.2g of CuSO respectively 4 , 2.8g of Cr 2 (SO4 ) 3 , 0.5g NaHSO 3 and 0.1 g of Fe 3 o 4 , mixed with 95.4g deionized water and then poured into the container to obtain a weathering steel surface rust layer stabilizing treatment agent (stabilizer);

[0067] S3. Immerse the weathering steel with the surface scale removed in the prepar...

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Abstract

The invention discloses a weathering resistant steel surface stabilizing treatment agent suitable for industrial atmospheric environment and a treatment method, and belongs to the technical field of steel anticorrosion. The weathering resistant steel surface stabilizing treatment agent comprises the following raw materials by weight percentage: 0.8-1.2% of CuSO4, 2.8-3.2% of Cr2 (SO4)3, 0.5-0.7% of NaHSO3, 0.08-0.12% of Fe3O4 and the balance of deionized water, after stabilization and water treatment, the element Cu is enriched on the surface of weathering resistant steel. The corrosion rate in a simulated industrial atmospheric medium is greatly reduced, formation of a stable and compact rust layer is accelerated, and meanwhile the problem that the atmospheric environment is polluted due to sagging and scattering of rust liquid in the initial corrosion stage is solved. The operation method is simple, low in cost and suitable for an industrially developed industrial atmospheric environment.

Description

technical field [0001] The invention relates to the technical field of steel material anticorrosion, in particular to a weather-resistant steel surface stabilization treatment agent and treatment method suitable for industrial atmospheric environments. Background technique [0002] Weathering steel refers to a low-alloy steel that has better corrosion resistance than ordinary carbon steel in the atmosphere by adding a small amount of alloying elements (such as Cu, P, Cr, Ni, Mn, Mo, Al, etc.). The surface can form a protective rust layer under long-term exposure, thereby effectively blocking the penetration and transmission of corrosive media. Its corrosion resistance can reach 2 to 8 times that of ordinary carbon steel, and the longer it is used, the more prominent its weather resistance will be. Weathering steel also has excellent mechanical and welding properties. Because weathering steel can be used directly in some environments without surface protection treatment suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/50C23C22/73C23C22/82
CPCC23C22/50C23C22/73C23C22/82C23C2222/10
Inventor 郭铁明任玉霞李光明唐健南雪丽贾建刚
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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