Carbon steel surface decarbonizing agent and decarbonizing process

A carbon steel and sodium hydroxide technology, applied in the chemical industry, can solve the problems of affecting drawing, the phosphating film is not dense, and the bonding force is poor, and achieves the effects of improving production efficiency, high carbon removal efficiency, and space saving.

Inactive Publication Date: 2020-04-03
南京派诺金属表面处理技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Steel pipes, steel wires, etc. will form a decarburized layer on the surface after heat treatment. If the decarburized layer is not cleaned off, it will affect the subsequent pickling and phosphating. The formed phosphating film is not dense and has poor bonding force, which will affect the final pull out
At present, there are few decarburizers on the market, and some decarburizers are not very effective, and it is difficult to clean the decarburized layer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of carbon steel surface decarburizer in the present embodiment comprises the following steps:

[0024] The raw material components are: 35% sodium hydroxide, 10% potassium permanganate, 5% sodium dodecylbenzenesulfonate, and 50% water. First add a certain amount of water into the reaction kettle, then add weighed sodium hydroxide and potassium permanganate, stir for 30 minutes to obtain a premix, then add sodium dodecylbenzenesulfonate and continue stirring for 30 minutes to obtain carbon Carbon remover for steel surface.

[0025] Carbon steel surface carbon remover application process:

[0026] Pour a certain amount of water into the working tank, add 15% carbon steel surface decarburizer, stir to form a uniform decarbonizer solution, then heat to 50°C, soak the steel pipe for 15 minutes, take it out and rinse it with water to remove carbon The efficiency reaches 96%.

Embodiment 2

[0028] The raw material components are: 40% sodium hydroxide, 5% potassium permanganate, 1% sodium dodecylbenzenesulfonate, and 54% water. First add a certain amount of water into the reaction kettle, then add weighed sodium hydroxide and potassium permanganate, stir for 20 minutes to obtain a premix, then add sodium dodecylbenzenesulfonate and continue stirring for 40 minutes to obtain carbon Carbon remover for steel surface.

[0029] Carbon steel surface carbon remover application process:

[0030] Pour a certain amount of water into the working tank, add 12% carbon steel surface decarburizer, stir to form a uniform decarbonizer solution, then heat to 60°C, soak the steel pipe for 3 minutes, take it out and rinse it with water to remove carbon The efficiency reaches 90%.

Embodiment 3

[0032] The raw material components are: 10% sodium hydroxide, 10% potassium permanganate, 5% sodium dodecylbenzenesulfonate and 75% water. First add a certain amount of water into the reaction kettle, then add weighed sodium hydroxide and potassium permanganate, stir for 40 minutes to obtain a premix, then add sodium dodecylbenzenesulfonate and continue stirring for 20 minutes to obtain carbon Carbon remover for steel surface.

[0033] Carbon steel surface carbon remover application process:

[0034] Pour a certain amount of water into the working tank, add 10% carbon steel surface decarburizer, stir to form a uniform decarburizer solution, then heat to 63°C, soak the steel pipe for 20 minutes, take it out and rinse it with water to remove carbon The efficiency reaches 93%.

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PUM

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Abstract

The invention discloses a carbon steel surface decarbonizing agent. The carbon steel surface decarbonizing agent comprises the following raw material components of, in percentage by mass, 10% to 40% of sodium hydroxide, 5% to 10% of potassium permanganate, 1% to 5% of sodium dodecyl benzene sulfonate and 50% to 80% of water. The decarbonizing agent can clean 95% or above of a decarburized layer onthe surface, and the decarbonizing efficiency is high; the decarbonizing agent only needs a small amount of dispensing tanks, the concentration of the dispensing tanks in the market is as high as 30%, and the using amount of the decarbonizing agent is greatly reduced; and the decarbonizing agent further has a degreasing function, oil stains on the surface of a steel pipe can be directly removed through the decarbonizing agent, and no extra degreasing agent is needed, so that the production efficiency is improved, and the space is saved.

Description

【Technical field】 [0001] The invention relates to the field of chemical industry, in particular to a carbon steel surface decarburizer and a decarburization process thereof. 【Background technique】 [0002] Steel pipes, steel wires, etc. will form a decarburized layer on the surface after heat treatment. If the decarburized layer is not cleaned off, it will affect the subsequent pickling and phosphating. The formed phosphating film is not dense and has poor bonding force, which will affect the final pull. At present, there are few decarburizers on the market, and some decarburizers are not very effective, and it is difficult to clean the decarburized layer. [0003] It can be seen that providing an improved method is an urgent problem in the art. 【Content of invention】 [0004] Aiming at the above problems, the present invention provides a carbon steel surface decarburizer and a decarburization process thereof. [0005] In order to solve the above problems, the present i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/40C23G1/19
CPCC23F1/40C23G1/19
Inventor 石琴
Owner 南京派诺金属表面处理技术有限公司
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