Metal industries are the main users of cast sheet shot and grit:
Steel mills, ferrous foundries and none ferrous foundries, workshops forging and metal fabricators. Blast cleaning with steel abrasives is an essential and critical operation in the various stages of the production of primary metals.
The basic functions carried out by blast cleaning come under these categories:
- Remove surface contamination, which provides a completely clean surface that helps to control the defects of the process.
- Surface preparation: provide a surface profile (scratch, matte finish or anchor pattern) in preparation for subsequent processing such as painting, coating, bonding, etc.
The Blast cleaning process
Blast cleaning with cast steel shot and grit can be described as an impact cleaning process in which the surface of work piece is subjected to successive bombardment by a high speed blown stream of milled abrasive particles in cast steel effective size.
The effect of this blast stream impacting upon the work is twofold:
- The contamination is broken, powdered, and removed, which exposes virgin, clean metal surfaces.
- At the same time, the impact force of the individual steel particles gives the surface of the clean workpiece a finishing profile whose appearance and texture is determined by the user's choice of steal abrasive size, hardness and the shape.
Mechanism of Blast Cleaning
Working properly, not just blow cleaning process will be effective in meeting the needs and user quality objectives, but also guarantee maximum productivity and lowest operating costs. Since it is the impact force of each steel particle bearing on the double function of removing impurities and profiling, it is necessary to understand how the impact force is generated, and then operated and controlled to ensure efficiency and profitability results. Surely one can see that the process should impose a powerful big challenge on this powerful small abrasive particle steel: Size S-660.