Small knowledge about steel shot

　　First, high-quality steel blocks, hair, and steel chips are melted, and then the molten steel is thrown into the water by centrifugal forming with a centrifugal disc at high speed, so that the surface temperature of the steel shot drops sharply to form a shot body, which is a quenching. After the first quenching, the shot body is dried and reheated and tempered in the furnace to achieve the applicable hardness. The tempered steel shot is sorted into different grades of products that meet SAE standards through a mechanical screen for use in shot peening equipment. The excellent heat treatment control process gives the steel shot the best elasticity and fatigue resistance. Steel shots of different particle sizes and hardness are suitable for different processes, such as being widely used in shot peening strengthening of large quantities and heavy parts or materials. Steel shot is widely used for descaling and rust removal before coating steel workpieces. In this case, centrifugal shot blasting equipment is often used. The spherical shape and low hardness prevent the steel shot from causing great wear on the equipment. Steel shot is also widely used for sand removal of castings. When used with appropriate equipment, steel shot is the best abrasive for surface cleaning because of its durability. Applicable industrial scope: aviation industry; automobile industry; sandblasting/painting companies; consumer goods manufacturing; container manufacturing/repair; casting; granite/stone cutting; shipbuilding and ship repair; oil and gas pipelines; plant maintenance and metal processing. Applicable process scope: surface pretreatment before painting, sand removal, pipeline descaling and strengthening. Moderate hardness, strong toughness, impact resistance, long service life, up to 2000-2900 times, good rebound, fast cleaning speed, low consumption, no breakage, fast cleaning speed, good technical effect. The cleanliness of the metal surface treated by this product can reach GB/T8923-1989; the surface roughness reaches Rz=10--150μm, thereby increasing the specific surface area of the metal surface and improving the surface adhesion of the paint after painting. It has very significant economic benefits and is currently the most advanced and ideal metal abrasive rust removal for shot blasting cleaning and strengthening at home and abroad.