Tips and features for using shot blasting machine steel shots

　　1. Steel shot is an important material for shot blasting machines in metal surface treatment. Among many metal surface treatment abrasives, steel shot is the most used and most cost-effective type. Since steel shots are consumed during the shot blasting process and are consumables, it is very necessary to fully consider how to reasonably evaluate the quality of steel shots and use them correctly.

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

　　3. Shot inspection items: hardness, size, shape

　　4. Shot inspection instruments and methods: 4.1 Hardness inspection process: inlay (high temperature inlay or resin solidification) - grinding - hardness 4.2 Size inspection process: select screen according to standards - Select the pellets - Pour into the multi-layer sieve and shake the sieve - Weigh each layer of the sieve - Judge against the standard 4.3 Shape inspection process: Select the specified field of view size - Inspect the pellets when full - Use a magnifying glass to observe - Count the critical number and the number of unqualified items.

　　5. In terms of properties, the hardness of steel shot determines the service life of steel shot. The hardness of steel shot is directly 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 service life. will be shorter; the size and shape distribution of the steel shot determine the roughness of the cleaned surface. The larger the diameter, the higher the roughness of the cleaned surface, but the work efficiency is also very high, and the wear relative to the steel shot is also greater. Evaluating the hardness, size, and shape of shot materials and adopting the correct shot blasting process will significantly reduce the cost of shot blasting machines and improve shot blasting efficiency.

　　6. Under normal circumstances, the steel shot used in industry must be selected well. The selection criteria are: the hardness must be moderate and the size must be uniform. Such specifications can extend the service life. Steel shot is used in a wide range of industries including the automotive industry; sandblasting/painting dealers; consumer goods manufacturing; container manufacturing/repair; foundry; granite/stone cutting; shipbuilding and ship repair; oil and gas pipelines; plant maintenance and metal processing. Steel shot is used to varying degrees for surface treatment and polishing. Therefore, it is necessary to provide the best solution according to various special applications.