一、Customer requirements

　　Anti corrosion and derusting of steel plate surface, derusting grade Sa2.5, surface roughness ra25um.

二、Current equipment: through shot blasting machine & sand blasting room

三、Abrasives currently used and their effects after treatment

　　At present, alloy steel ball S460 is used. After treatment, the surface roughness of the workpiece is too high, and the dust can not be completely cleaned. The effect after treatment is as follows:

　　The derusting grade is sa2.0-2.5, the roughness is ra57-62um, and the broken rate of steel shot is relatively high.

四、Effect after abrasive change and treatment

1.Use S330 alloy shot (secondary tempering shot of HP shot)

　　The derusting grade is about Sa2.5, the roughness is ra40-50um, the derusting grade can meet the requirements of your company, the roughness is reduced, and the dust situation will be relieved.

2. Use S230 alloy shot (secondary tempering shot of HP shot)

　　The derusting grade is about sa3.0, the roughness is ra20-30um, the derusting grade can exceed the requirements of your company, the roughness can also meet the requirements of your company, and all dust conditions will be solved.