From black, scratched and mucky to brand new look

By OEM Update Editorial February 8, 2019 2:22 pm IST

Steel shot blasting is a process where abrasive particles are pneumatically or centrifugally accelerated and forcefully directed against a surface. These high speed abrasive particles remove contaminants from the material’s surface and condition the surface for subsequent finishing.

Shot blasting is a fabulous process to give the desired finish to critical components than using different technology. It still remains one of the lesser known processes but an important one. It is normally done on concrete or metal surfaces. While similar to a sandblasting process, shot blasting is very much different in the way it is executed and exhibiting effectiveness. Almost every industry that uses metal including aerospace, automotive, construction, foundry, ship-building, rail, and many others makes use of shot blasting.

Shot blasting over conventional sand blasting
Steel beads are “shot” inside a machine onto the component to clean it in an industrial manner. To begin, you load the machine with the beads or shot pellets. The beads “blast” off any stains embedded on the components that can’t be removed through normal cleaning methods. Typical shot blasting application includes:
• Roughening surfaces in preparation for thermal spraying, painting, bonding or other coating operations
• Removing rust, scale, sand, or paint
• Providing a matte surface finish
• Removing flash from molded components
• Cosmetic surface enhancement or etching

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