Shot blasting machine steel shot using skills and characteristics

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

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

　　3. Shot inspection items: hardness, size, shape

　　4. Pill inspection instruments and methods:

　　4.1 Hardness

　　Inspection process: inlay (high temperature inlay or resin solidification) - grinding - hardness

　　4.2 Dimensions

　　Inspection process: select the screen according to the standard - select the pellets - pour it into the multi-layer screen and shake the screen - weigh each layer of the screen - judge according to the standard

　　4.3 Shape

　　Inspection process: Select the size of the specified field of view - full of inspection pellets - use a magnifying glass to observe - count the critical number and the unqualified number.

　　5. In terms of nature, the hardness of the steel shot determines the service life of the steel shot. The hardness of the steel shot is proportional to the cleaning speed. The higher the hardness, the faster the cleaning speed. will be short; the size and shape distribution of the steel shot determine the roughness of the cleaned surface, the larger the diameter, the higher the cleaned surface roughness, but the work efficiency is also high, and the wear is relatively large compared to the steel shot. Evaluating the hardness, size, shape of the shot and adopting the correct shot blasting process will greatly reduce the cost of the shot blasting machine and improve the shot blasting efficiency.

　　6. Under normal circumstances, the steel shot used in the industry should be well selected. The selection criteria are: moderate hardness and uniform size. Such specifications can prolong the service life. Steel shot is used in a wide variety of applications, automotive industry; sandblasting/painter; consumer goods manufacturing; container manufacturing/repair; foundry; granite/stone cutting; shipbuilding and ship repair; oil and gas pipelines; plant maintenance and metalworking, all in To varying degrees, steel shot is used for surface preparation and grinding. Therefore, it is necessary to provide the best solution according to various special applications.