Correct use of steel shot helps improve cleaning efficiency

　　The function of steel shot is to clean the workpiece. The selection of steel shot is proportional to the working efficiency. Correct selection of steel shot is the key to improving working efficiency. Pay attention to the following issues when selecting steel shot correctly; confirming steel shot mainly depends on the type of workpiece you want.

　　Aluminum shot or stainless steel shot is generally used for non-ferrous metals; steel shot is generally used for steel weldments, castings, steel, etc.; the larger the diameter of the steel shot, the higher the surface roughness after cleaning, but the working efficiency is also very high; irregular-shaped steel sand or wire cut shot has a higher cleaning efficiency than spherical shot, but the surface roughness is also high; the projectile with high cleaning efficiency also wears the equipment quickly; only the use time is counted, but compared with the production efficiency, this wear is not fast; the hardness of the steel shot is proportional to the cleaning speed, but inversely proportional to the life.

　　Therefore, the higher the hardness of the steel shot, the faster the cleaning speed, but the short life and large consumption, so the hardness should be moderate (about HRC40-50 is appropriate) for the best effect. Select steel shots with moderate hardness and good rebound properties, which can reach every place in the finishing room and reduce the processing time. In the production process, correctly adjust and frequently check the hot spots of the blasting head, ensure the normal operation of the shot sand separator, ensure sufficient sand discharge, and maximize the power of the shot blasting motor. These are the key factors to ensure the finishing efficiency and save costs.Regularly add materials, and each addition does not exceed 10% of the total amount of steel shots.

　　During the production process, frequently check the particle size distribution of the steel shots to ensure that the particle size distribution of the steel shots remains unchanged, in order to ensure the stability of the finishing efficiency and the surface quality of the castings. The finishing time is controlled to remove the sticky sand and oxide skin and expose the metal body. Although extending the finishing time can change the surface roughness of the casting, it reduces the efficiency and increases the cost.