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　　Introduction to steel shot: steel shot has been widely used in descaling and derusting treatment of iron and steel workpiece before coating. In this case, centrifugal projection equipment has been widely used. Due to the small shape and hardness of the ball, the steel ball will not cause great wear to the equipment.

　　Steel shot is also widely used in sand casting. When used with suitable equipment, steel shot is durable and the best grinding material for finishing appearance.

　　2、 Variety classification of steel shot

　　1. The hardness of steel shot is generally hrc40 ~ 50, which can process hard metal and make the hardness increase to hrc57 ~ 62. These resistances are good, the life is several times of that of cast iron shot, and they are widely used.

　　2. The hardness of cast iron round cast iron is hrc58 ~ 65, brittle, easy to break, short life, and not widely used. The first is for areas with high shooting intensity. 3. The hardness of round glass is lower than that of the first two kinds of circles. It is mainly used in the situation that stainless steel, titanium, aluminum, magnesium and other iron pollution are not allowed. The second treatment after shot peening can eliminate iron pollution and reduce the surface roughness of parts.

　　3、 Steel shot is applicable to the production and repair of containers for sandblasting and coating consumer goods in aviation industry and automobile industry; granite, stone cutting, shipbuilding and ship repairing, oil and gas pipeline plant maintenance and metal processing.

　　4、 The analysis of steel shot with steel shot characteristics is a commonly used data of metal workpiece processing. The structure of steel shot is compact and the particle size is uniform. The treatment of the appearance of metal workpiece with steel shot has the effect of exerting the appearance pressure of metal workpiece, which can well promote the ability of anti fatigue of workpiece.

　　The appearance of metal workpiece treated with steel shot has the characteristics of fast finishing speed. The steel shot and steel sand have moderate hardness, high rebound, and the workpiece with complex inner corner and shape is evenly and quickly finished. It is a good appearance processing data to shorten the appearance processing time and improve the working efficiency.

　　Steel shot is a common appearance processing data. There are many kinds of steel shot, and different kinds of materials and equipment are required. The following is the first feature of the steel shot: the steel shot is a high-quality wear-resistant material with moderate hardness, strong resistance, excellent impact resistance and long service life.

　　When finishing the workpiece, it has high rejection, fast finishing speed and low consumption. Steel shot has a wide range of applications, including castings, forgings, the back of machined parts and the back of parts after heat treatment. Generally, steel shot is used in manufacturing industry and ship manufacturing.