How to use steel shot for shot blasting machine

　　1. Steel shot is an important material for shot blasting machine in metal surface treatment. Among many metal surface treatment abrasives, steel shot is the most used and most cost-effective one. Since steel shot is consumed in the shot blasting process and is a consumable, it is very necessary to fully consider how to reasonably evaluate the quality of steel shot and use it correctly.

　　2. Common standards for shot material quality inspection: SAEJ441 wire cut shot standard, SAEJ444 cast steel shot standard, SAEAMS2431/1-8 eight shot material inspection standards.

　　3. Shot material inspection items: hardness, size, shape

　　4. Shot material inspection instruments and methods: 4.1 Hardness inspection process: inlay (high temperature inlay or resin solidification) - grinding - hardness test 4.2 Size inspection process: select screen according to standard - select shot - pour into multi-layer screen and shake the screen - weigh each layer of screen - judge against standard 4.3 Shape inspection process: select the specified field of view - stick the inspection shot - observe with a magnifying glass - count the critical number and the number of unqualified.

　　5. In terms of properties, the hardness of steel shot determines the service life of steel shot. The hardness of steel shot is proportional to the cleaning speed. The higher the hardness, the faster the cleaning speed, the greater the consumption of steel shot, and the shorter the life; the size and shape distribution of steel shot determine the roughness of the surface after cleaning. The larger the diameter, the higher the surface roughness after cleaning, but the work efficiency is also very high, and the wear relative to steel shot is also greater. Evaluating the hardness, size, and shape of the shot and adopting the correct shot blasting process will greatly reduce the cost of using the shot blasting machine and improve the efficiency of shot blasting.

　　6. Generally speaking, steel shot should be selected well in industry. The selection criteria are: moderate hardness and uniform size. Only such specifications can extend the service life. Steel shot is widely used in the automotive industry; sandblasting/painting companies; consumer goods manufacturing; container manufacturing/repair; casting; granite/stone cutting; shipbuilding and ship repair; oil and gas pipelines; factory maintenance and metal processing, all use steel shot for surface treatment and grinding to varying degrees. Therefore, it is necessary to provide the best solution according to various special applications.