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Environment-friendly stainless steel pickling method

A stainless steel, environment-friendly technology, applied in the field of pickling, can solve the problems of tail gas treatment, poor environmental protection, surface roughness improvement, etc., to achieve the effect of improving material quality, reducing surface roughness, and improving pickling effect

Inactive Publication Date: 2019-10-08
响水德丰金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional pickling process will produce a lot of waste gas, but the traditional pickling process only focuses on the removal of impurities in stainless steel, and does not treat the exhaust gas generated, resulting in poor environmental protection and a huge impact on the environment, and The traditional pickling process does not polish the pickled material, and some substances produced after the pickling reaction will condense on the surface of the material without surface treatment, resulting in an increase in the surface roughness of the material, which needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The invention provides a technical solution: an environment-friendly pickling method for stainless steel, the process comprising the following steps:

[0027] S1. Select the stainless steel material that needs to be pickled, use a file to polish the corners and edges of the stainless steel material, and remove the sharp corners and edges of the corners and edges;

[0028] S2. Select a suitable water tank, fully immerse the stainless steel material in the water of 80-100 ° C in the water tank for 2-4 minutes, and wash with water;

[0029] S3. Select another suitable liquid storage tank, and add a mixed solution of hydrochloric acid, phosphoric acid, hydrogen peroxide, stabilizer and surfactant into the liquid storage tank;

[0030] S4. Take out the washed stainless steel material, immerse it all in the liquid storage tank, and immerse it at 40-50°C for 10 minutes. When the stainless steel material is immersed, use a stirring bar to stir for the first pickling. During the...

Embodiment 2

[0038] The invention provides a technical solution: an environment-friendly pickling method for stainless steel, the process comprising the following steps:

[0039] S1. Select the stainless steel material that needs to be pickled, use a file to polish the corners and edges of the stainless steel material, and remove the sharp corners and edges of the corners and edges;

[0040] S2. Select a suitable water tank, fully immerse the stainless steel material in the water of 80-100 ° C in the water tank for 2-4 minutes, and wash with water;

[0041] S3. Select another suitable liquid storage tank, and add a mixed solution of 300mL / L hydrochloric acid, 60mL / L phosphoric acid, 120mL / L hydrogen peroxide, 80mL / L stabilizer and 2mL / L surfactant into the liquid storage tank;

[0042] S4. Take out the washed stainless steel material, immerse it all in the liquid storage tank, and immerse it at 40-50°C for 10 minutes. When the stainless steel material is immersed, use a stirring bar to sti...

Embodiment 3

[0050] The invention provides a technical solution: an environment-friendly pickling method for stainless steel, the process comprising the following steps:

[0051] S1. Select the stainless steel material that needs to be pickled, use a file to polish the corners and edges of the stainless steel material, and remove the sharp corners and edges of the corners and edges;

[0052] S2. Select a suitable water tank, fully immerse the stainless steel material in the water of 80-100 ° C in the water tank for 2-4 minutes, and wash with water;

[0053] S3. Select another suitable liquid storage tank, and add a mixed solution of 300mL / L hydrochloric acid, 60mL / L phosphoric acid, 120mL / L hydrogen peroxide, 80mL / L stabilizer and 2mL / L surfactant into the liquid storage tank;

[0054]S4. Take out the washed stainless steel material, immerse it all in the liquid storage tank, and immerse it at 40-50°C for 10 minutes. When the stainless steel material is immersed, use a stirring bar to stir...

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Abstract

The invention discloses an environment-friendly stainless steel pickling method. The environment-friendly stainless steel pickling method comprises the following steps that a stainless steel materialneeding pickling is selected, corners and edges of the stainless steel material are ground by using a file so as to remove the corners and sharp edges and sharp edges of the edges; and a proper watertank is selected, water with the certain temperature is added into the water tank, the stainless steel material is completely immersed in water for a certain time, and water washing is carried out. The method is provided with twice-time pickling, so that the pickling effect of the material is greatly improved through twice pickling, a waste gas absorption process is arranged after the pickling each time, so that tail gas generated by pickling is effectively adsorbed, the waste gas is prevented from being directly discharged into the atmospheric environment, and the environment-friendly and safe effects are achieved; the surface treatment process is arranged in the process, after acid pickling, the surface of the material can be effectively subjected to surface treatment, so that substancesgenerated by pickling reaction can be effectively removed, the surface roughness of the material is greatly reduced, and the material quality is improved.

Description

technical field [0001] The invention belongs to the technical field of pickling, and in particular relates to an environment-friendly pickling method for stainless steel. Background technique [0002] The method of using an acid solution to remove scale and rust on the steel surface is called pickling. It is a method of cleaning metal surfaces. It is usually carried out together with the pre-film, sometimes a large amount of alkaline impurities will be produced on the stainless steel, so it is necessary to pickle the stainless steel to remove the alkaline impurities on the surface of the stainless steel. [0003] The traditional pickling process will produce a lot of waste gas, but the traditional pickling process only focuses on the removal of impurities in stainless steel, and does not treat the exhaust gas generated, resulting in poor environmental protection and a huge impact on the environment, and The traditional pickling process does not polish the pickled material,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/08C23G1/04
CPCC23G1/04C23G1/083C23G1/086
Inventor 王启
Owner 响水德丰金属材料有限公司
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