Shot Blasting Machine is a casting equipment that uses high-speed projectiles thrown by a shot blaster to clean or strengthen the surface of castings. The shot blasting machine can simultaneously carry out sand blasting, core removal and cleaning processes on castings.
Introduction to metal surface mechanical treatment technology - shot blasting machine
Send steel shots to a high-speed rotating disk, and use the action of centrifugal force to make the steel shots thrown at high speed Impacting the surface of the part to achieve the purpose of polishing is called shot blasting. The process of spraying steel shot or glass shot on parts with compressed air to remove scale and other contaminants is called shot peening. Both processes can produce compressive stress on the surface of the part, and there is no silicon powder, which causes little environmental pollution.
The main uses of shot blasting machines are as follows:
① Generate compressive stress on the surface of parts, which can improve their fatigue strength and tensile stress corrosion resistance;
②Correction of distorted thin-walled parts;
③Replacing the general cold and hot forming processes, forming large thin-walled aluminum parts can not only avoid residual tensile stress on the surface of the parts, but also Compressive stress that is beneficial to the part can be obtained.
It should be noted that the use temperature of parts that have been shot peened or shot blasted cannot be too high, otherwise the compressive stress will automatically disappear at high temperatures, thus losing the expected effect. Their operating temperature is determined by the material of the parts. For general steel parts, it is about 260-290℃, and for aluminum parts, it is only 170℃.