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Shot blasting cleaning method for casting machining

A technology of shot blasting and casting, which is applied in the field of casting processing, can solve the problems of poor appearance and mechanical properties of castings, dark color, high surface roughness, etc., to improve appearance and mechanical properties, ensure functional requirements, and improve processing effect of effect

Inactive Publication Date: 2021-03-19
TIANJIN ZHONGDA PRECISION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current shot blasting method for processing castings has the problem of unsatisfactory shot blasting effect. After the processing castings are shot blasted, the surface roughness of the castings is high and the color is dark, resulting in poor appearance and mechanical properties of the castings. Poor, ultimately affecting the functional requirements of the casting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A shot blasting method for processing castings, the steps are as follows:

[0033] (1) Put the processed castings to be shot blasted into the degreasing agent solution for degreasing treatment, then put the castings in clean water, wash them with water, take out the castings, and blow off the water on the surface of the castings by means of compressed air, Then put into the drying chamber and dry until the water content of the casting is less than 0.4wt%;

[0034] (2) Select the mixed abrasive as the shot blasting abrasive, the shot blasting abrasive is a mixture of steel grit and steel shots, use a sieve to sieve the mixed abrasive into a uniform particle size, and put it into the shot blasting line equipment after cleaning and drying;

[0035] (3) Place the casting in the shot blasting chamber of the shot blasting line equipment, adjust the position of the casting, adjust the distance between the shot blasting gun and the surface of the casting to 300mm, adjust the pr...

Embodiment 2

[0039] A shot blasting method for processing castings, the steps are as follows:

[0040] (1) Put the processed castings to be shot blasted into the degreasing agent solution for degreasing treatment, then put the castings in clean water, wash them with water, take out the castings, and blow off the water on the surface of the castings by means of compressed air, Put into drying room again and dry, until the water content of casting is less than 0.4wt%;

[0041] (2) Select the mixed abrasive as the shot blasting abrasive, the shot blasting abrasive is a mixture of steel grit and steel shots, use a sieve to sieve the mixed abrasive into a uniform particle size, and put it into the shot blasting line equipment after cleaning and drying;

[0042] (3) Place the casting in the shot blasting chamber of the shot blasting line equipment, adjust the position of the casting, adjust the distance between the shot blasting gun and the surface of the casting to 300-450mm, and adjust the sho...

Embodiment 3

[0046] A shot blasting method for processing castings, the steps are as follows:

[0047] (1) Put the processed castings to be shot blasted into the degreasing agent solution for degreasing treatment, then put the castings in clean water, wash them with water, take out the castings, and blow off the water on the surface of the castings by means of compressed air, Then put it into the drying chamber for drying, and when the casting is dried, the water content of the casting is less than 0.4wt%;

[0048] (2) Select the mixed abrasive as the shot blasting abrasive, the shot blasting abrasive is a mixture of steel grit and steel shots, use a sieve to sieve the mixed abrasive into a uniform particle size, and put it into the shot blasting line equipment after cleaning and drying;

[0049] (3) Place the casting in the shot blasting chamber of the shot blasting line equipment, adjust the position of the casting, adjust the distance between the shot blasting gun and the surface of the...

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Abstract

The invention relates to a shot blasting cleaning method for casting machining. The shot blasting cleaning method comprises the following steps that a machined casting to be subjected to shot blastingcleaning is degreased, washed and dried; a shot blasting abrasive material is selected and is thrown into shot blasting line equipment after cleaning and drying; the casting is placed in a shot blasting chamber of the shot blasting line equipment, and shot blasting treatment is conducted on the casting; shots adhering to the casting are brushed off; and the casting obtained after shot blasting treatment is inspected, and inspection and acceptance records are made. Compared with the prior art, pre-cleaning treatment is conducted on the machined casting, the mixed abrasive material is adopted as the shot blasting abrasive material, the problem that the color is dark is solved, and the shot blasting cleaning treatment effect of the casting is improved; and reasonable shot blasting parametersof a shot blasting gun are set, follow-up cleaning is conducted in the shot cleaning chamber, so that roughness of the surface of the casting is effectively reduced, the appearance performance and mechanical performance of the casting are improved, and then the functional requirements of the casting are met.

Description

technical field [0001] The invention relates to the technical field of casting processing, in particular to a shot blasting method for processing castings. Background technique [0002] Shot blasting is one of the important processes in casting processing. In order to remove the scales such as molding sand attached to the surface of the casting and rust formed on the surface of the base material after casting, it is necessary to clean the casting by shot blasting. If the treatment is not good, it will directly affect Quality and quality of machined castings. However, the current shot blasting method for processing castings has the problem of unsatisfactory shot blasting effect. After the processing castings are shot blasted, the surface roughness of the castings is high and the color is dark, resulting in poor appearance and mechanical properties of the castings. Poor, and ultimately affect the functional requirements of the casting. Contents of the invention [0003] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24C1/08B24C5/02B24C11/00B24C9/00
CPCB24C1/086B24C5/02B24C11/00B24C9/006
Inventor 李树军孙士俊李月旺
Owner TIANJIN ZHONGDA PRECISION MACHINERY
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