Shot blasting machine--Casting equipment for cleaning or strengthening the surface of castings by using high-speed projectile thrown by shot blasting machine. The shot blasting machine also performs sand dropping, core cleaning and cleaning.
The process of peening steel or glass pellets onto parts with compressed air to remove oxide scale and other dirt is called peening. The steel shot can also be sent to a high-speed rotating disc, using the role of centrifugal force, so that high-speed thrown steel shot impact on the surface of parts, to achieve the purpose of polishing, this process is called shot blasting. Both processes can produce compressive stress on the surface of parts, and there is no silicon powder, so it has little pollution to the environment. Their
main applications are as follows:
(1) to produce compressive stress on the surface of parts, which can improve their fatigue strength and tensile stress corrosion resistance;
(2) to correct the twisted thin-walled parts; (3) to replace the general cold and hot forming process, forming large thin-walled aluminum parts, not only can avoid the surface of parts with residual. Tensile stress and favorable compressive stress on parts can be obtained. It should be noted that the service temperature of the parts treated by shot peening or shot peening can not be too high, otherwise the compressive stress will automatically disappear at high temperature, thus losing the desired effect. Their use temperature is determined by the material quality of the parts, for the general steel parts about 260-290 degrees centigrade, aluminum parts only 170 degrees centigrade.