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Stainless steel desulphurization agent

A technology of stainless steel and complexing agent, applied in the field of stainless steel desulfurizer, it can solve the problems of loose weld, reduced plasticity and toughness, service life of only 1-2 days, and salt spray time of less than or equal to 48 hours.

Inactive Publication Date: 2020-02-04
东莞市精诚环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During heat treatment, sulfides will be extended to long strips in stainless steel, which will reduce the plasticity and toughness of the steel, and will reduce the corrosion resistance of the steel; and at the high temperature of welding, elemental sulfur is easily oxidized to generate a large amount of sulfur dioxide gas , leading to a large number of pores in the weld, resulting in loose welds, and ultimately affecting the quality of welding
However, the treatment area per kilogram of stainless steel desulfurizers currently on the market is only 150-200m 2 , its desulfurization index is only 0.05-0.1g / m 2 , the service life is only 1-2 days and the salt spray time is less than or equal to 48 hours

Method used

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  • Stainless steel desulphurization agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A stainless steel desulfurizer, consisting of the following components by weight: wetting agent or polyol 11%, emulsifier 3%, complexing agent A: 8%, penetrating agent or corrosion inhibitor 0.7%, complexing agent B: 6%, complexing agent C: 6% and deionized water 65.3%.

[0024] Wherein, the wetting agent or polyhydric alcohol is 2-methyl-2,4-pentanediol.

[0025] Wherein, the emulsifier is isomerized tridecanol polyoxyethylene ether E-1310.

[0026] Wherein, the complexing agent A is sodium α-glucoheptonate.

[0027] Wherein, the penetrating agent or corrosion inhibitor is BEROL 226 SA, and BEROL 226 SA is a strong degreasing surfactant.

[0028] Wherein, complexing agent B is sodium citrate.

[0029] Wherein, complexing agent C is sodium potassium tartrate.

Embodiment 2

[0031] A stainless steel desulfurizer, consisting of the following components by weight: wetting agent or polyol 12%, emulsifier 4%, complexing agent A: 9%, penetrating agent or corrosion inhibitor 0.8%, complexing agent B: 7%, complexing agent C: 7% and deionized water 60.2%.

[0032] Wherein, the wetting agent or polyhydric alcohol is 2-methyl-2,4-pentanediol.

[0033] Wherein, the emulsifier is isomerized tridecanol polyoxyethylene ether E-1310.

[0034] Wherein, the complexing agent A is sodium α-glucoheptonate.

[0035] Wherein, the penetrating agent or corrosion inhibitor is BEROL 226 SA, and BEROL 226 SA is a strong degreasing surfactant.

[0036] Wherein, complexing agent B is sodium citrate.

[0037] Wherein, complexing agent C is sodium potassium tartrate.

Embodiment 3

[0039] A stainless steel desulfurizer, consisting of the following components by weight: wetting agent or polyol 12%, emulsifier 5%, complexing agent A: 9.3%, penetrating agent or corrosion inhibitor 1%, complexing agent B: 8%, complexing agent C: 7.5% and deionized water 57.2%.

[0040] Wherein, the wetting agent or polyhydric alcohol is 2-methyl-2,4-pentanediol.

[0041] Wherein, the emulsifier is isomerized tridecanol polyoxyethylene ether E-1310.

[0042] Wherein, the complexing agent A is sodium α-glucoheptonate.

[0043] Wherein, the penetrating agent or corrosion inhibitor is BEROL 226 SA, and BEROL 226 SA is a strong degreasing surfactant.

[0044] Wherein, complexing agent B is sodium citrate.

[0045] Wherein, complexing agent C is sodium potassium tartrate.

[0046] In one of the examples, the formulas and weight ratios of Examples 1-3 are prepared respectively using the preparation method of the stainless steel desulfurizer of the present invention. Pour deioniz...

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Abstract

The invention relates to a stainless steel desulphurization agent. The stainless steel desulphurization agent comprises, by weight percentage, 10.4%-12.7% of wetting agents or polyhydric alcohol, 2.5%-5.0% of emulsifying agents, 7.7%-9.5% of complexing agents A, 0.5%-1.0% of penetrating agent or corrosion inhibitor, 5.8%-8.0% of complexing agents B, 5.5%-7.5% of complexing agents C and 56.3%-67.6%of deionized water. The stainless steel desulphurization agent is an agent which can effectively reduce the content of elemental sulfur and the content of sulfides on the surface of stainless steel,the content of elemental sulfur and the content of sulfides on the surface of the stainless steel per square meter can be reduced to 0.02g to 0.03g, the neutral salt fog testing time of the 304 stainless steel which is subjected to desulphurization treatment through the stainless steel desulphurization agent can be 96 hours or above, namely, the salt fog resistance testing capacity and the corrosion resistance capacity of the 304 stainless steel are remarkably improved, the desulphurization effect of the stainless steel desulphurization agent is better, and the stainless steel desulphurizationagent can achieve the purposes that the mechanical property of the surface of the stainless steel can be effectively improved, and the welding problem of the surface of the stainless steel can be effectively solved.

Description

technical field [0001] The invention relates to the field of removing trace elemental sulfur and sulfide in stainless steel, in particular to a stainless steel desulfurizer, which can improve its anisotropy to the toughness of stainless steel and its effect on stainless steel by removing elemental sulfur and sulfide in stainless steel. Adverse effects on the mechanical properties of steel. Background technique [0002] As we all know, with the development of modern technology and manufacturing level, stainless steel has not only been widely used in high-end industries such as aviation manufacturing, pipeline transportation and automobile manufacturing, but also has penetrated into our daily life, such as anti-theft nets, thermos cups and tables. Chairs and other large and small items. [0003] Elemental sulfur and sulfide are one of the most common impurities in stainless steel, which will have an adverse effect on the mechanical properties of stainless steel. During heat ...

Claims

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Application Information

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IPC IPC(8): C23F1/14C23G5/06
CPCC23F1/14C23G5/06
Inventor 粟飞
Owner 东莞市精诚环保科技有限公司
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