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Steel Bar Shot Blasting Machine Processing Technology

QINGDAO KNNJOO MACHINE INC. | Updated: Jun 21, 2017

Shot blasting machine is through the shot blasting machine will be high-speed cast steel shot off the impact of material in the surface of a material processing technology. Compared to other surface treatment techniques, it is faster, more efficient, and can be partially retained or stamping after the casting process.

In the 1930s, American companies made the first shot blasting machine in the world. China's shot peening equipment production began in the last century 50's, Steel Bar Shot Blasting Machine mainly imitation of the former Soviet Union technology.

Shot blasting machines can also be used to remove burrs, scale and rust, which may affect the integrity, appearance, or definition of the object part. The shot blasting machine can also remove contaminants from the surface of a partially coated surface and provide an enhanced surface profile for the coating to achieve the purpose of strengthening the workpiece.

Shot blasting machine is different from the shot blasting machine, which is used to reduce the fatigue life of the parts by increasing the surface stress, Steel Bar Shot Blasting Machine increasing the strength of the parts, or preventing jogging.

Shot blasting equipment is first used in the casting industry cast steel, cast iron pieces of the surface of sand and the removal of oxide.

Almost all of the cast steel, gray castings, Magang, ductile iron and so on to be shot blasting. This is not only to remove the surface of the castings oxide and sticky sand, but also the casting quality inspection before the indispensable preparation process, Steel Bar Shot Blasting Machine such as large gas turbine chassis in the nondestructive testing must be carried out before the strict shot peening to ensure the results of the test reliability. In the general casting production, throwing shot peening is found in the casting surface defects such as subcutaneous stomata, slag and sticky sand, cold separation, from the skin and other essential means of technology. Non-ferrous metal castings, such as aluminum alloy, copper alloy surface cleaning, in addition to the removal of oxide, found the casting surface defects, the more important purpose is to throw shot peening to remove the burrs of die cast and get a decorative surface quality , To obtain a comprehensive effect. Metallurgical Iron and steel production, throwing peening or pickling is to ensure that large quantities of steel production to obtain high productivity and the use of mechanical or chemical joint removal of phosphorus skin of a process. Silicon steel sheet, Steel Bar Shot Blasting Machine stainless steel sheet and other alloy steel plate, with the production process, in the cold rolling process must be carried out after the annealing and shot blasting or pickling treatment to ensure that the cold-rolled steel plate surface roughness and thickness accuracy.

According to the theory of modern metal strength, increasing the dislocation density inside the metal is the main direction to improve the strength of the metal. Practice has proved that shot blasting is to increase the metal dislocation structure of the effective process. This is of great significance to the fact that some metals can not be hardened by phase change hardening (eg, martensitic quenching, etc.) or to achieve further hardening of the workpiece. Aviation, aerospace industry, automobiles, Steel Bar Shot Blasting Machine tractors and other parts of the requirements of light, but the reliability requirements are getting higher and higher, the important process is to use throwing shot peening process to improve the strength and fatigue strength.

Shot blasting machine is divided into drum type, chain plate type, turntable type, trolley type, squirrel cage type and hanging type shot blasting machine.

Roller and chain plate shot blasting machine is suitable for cleaning small and medium-sized castings that are not afraid of collisions. Roller-type shot blasting machine by the barrel of the spiral-shaped guide, so that casting flip and run forward. Chain plate shot blasting machine through the chain plate movement, so that casting flip and run. Turntable, trolley and hanging shot blasting machines are used to clean large and medium-sized castings, usually with a fixed shot blasting chamber, the castings are cleaned or moved in the shot blasting chamber. Shot blasting chamber is usually equipped with several shot blasting machine, Steel Bar Shot Blasting Machine mounted in different positions, from different azimuths projectile, in order to improve the cleaning efficiency of the shot blasting machine and clean up the quality. Hanging shot blasting machine can be cleaned according to the needs of the casting, hanging in the chain on the configuration of a number of hooks, cleaning castings hanging on the hook, while running forward at the same time flip. Castings in the shot blasting outdoor loading and unloading, in the room to clean up.

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