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Surface treatment process of small stainless steel casting

A surface treatment and stainless steel technology, applied in the field of metal surface treatment, can solve the problems of lower production efficiency, higher cost, uneven casting quality, etc., and achieve the effect of stable quality, high quality and lower production cost.

Inactive Publication Date: 2020-01-17
JIANGSU XIANGMENG PRECISION CASTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current surface treatment process of stainless steel castings is relatively complicated, and there is no uniform specification and standard. The quality of the processed castings is uneven. Too many repeated processes reduce production efficiency, increase the labor burden of workers, and increase costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A surface treatment process for small stainless steel castings, comprising the following steps:

[0017] S1. Shot blasting: Put the small stainless steel castings to be processed into the drum type shot blasting machine, and use steel grit with a particle size of 0.45mm for shot blasting;

[0018] S2. Sandblasting: sandblasting the castings after shot blasting, the raw material for sandblasting is quartz sand with a particle size of 0.1mm;

[0019] S3. Rinse: Rinse the casting after sandblasting, and the rinse solution used is a mixed solution containing 3% hydrogen peroxide and 2% ethanol;

[0020] S4. pickling: put the rinsed casting into the pickling pool, and use 43-52% hydrochloric acid solution for pickling, and the pickling time is 2 minutes;

[0021] S5. Secondary pickling: Put the castings after hydrochloric acid pickling into the secondary pickling pool, and pickle them with a mixed solution containing 10% hydrofluoric acid, 5% sulfuric acid and 5% hydrogen p...

Embodiment 2

[0027] A surface treatment process for small stainless steel castings, comprising the following steps:

[0028] S1. Shot blasting: Put the small stainless steel castings to be processed into the drum type shot blasting machine, and use steel grit with a particle size of 0.55mm for shot blasting;

[0029] S2. Sandblasting: sandblasting the castings after shot blasting, the raw material for sandblasting is quartz sand with a particle size of 0.3mm;

[0030] S3. Rinse: Rinse the casting after sandblasting, and the rinse solution used is a mixed solution containing 3% hydrogen peroxide and 2% ethanol;

[0031] S4. pickling: put the rinsed casting into the pickling pool, and use 43-52% hydrochloric acid solution for pickling, and the pickling time is 2 minutes;

[0032] S5. Secondary pickling: Put the castings after hydrochloric acid pickling into the secondary pickling pool, and pickle them with a mixed solution containing 10% hydrofluoric acid, 5% sulfuric acid and 5% hydrogen p...

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Abstract

The invention discloses a surface treatment process of a small stainless steel casting. According to the surface treatment process, the to-be-treated small stainless steel casting only needs to pass through the steps of, S1, shot blasting, S2, sand blasting, S3, flushing, S4, acid washing, S5, secondary acid washing, S6, polishing, and S7, secondary flushing to complete the surface treatment; andthe surface treatment of the casting can be completed only by the simple procedures, the finished casting has high and stable quality, a reliable and standard method is provided for the industry, andthe production cost is reduced.

Description

technical field [0001] The invention relates to the field of metal surface treatment, in particular to a surface treatment process for small stainless steel castings. Background technique [0002] Surface treatment is a process of adding or subtracting on the surface of the base material to change its physical and chemical properties. The purpose of surface treatment is to meet the corrosion resistance, wear resistance, decoration or other special functional requirements of the product. The current surface treatment process of stainless steel castings is relatively complicated, and there is no unified specification and standard. The quality of the processed castings is uneven. Too many repeated processes reduce production efficiency, increase the labor burden of workers, and increase costs. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, the object of the present invention is to provide a surface treatment process for small stai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00B24C1/08B24C1/10C23G1/04
CPCB24B1/00B24C1/08B24C1/10C23G1/04
Inventor 王伟民
Owner JIANGSU XIANGMENG PRECISION CASTING CO LTD
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