The shot blasting machine uses steel pellets to be sent to a high-speed rotating disc. The centrifugal force acts to impact the high-speed throwing steel shots on the surface of the parts to achieve the purpose of polishing. The shot blasting machine can generate compressive stress on the surface of the parts. Moreover, there is no silicon-containing powder, which is less polluting to the environment.
The main purposes of the shot blasting machine are as follows:
1 shot blasting machine produces compressive stress on the surface of the part, which can improve their fatigue strength and tensile stress corrosion resistance;
2 shot blasting machine can correct the twisted thin-walled parts;
3 The process of the shot blasting machine replaces the general cold and hot forming process, and the large-scale thin-walled aluminum parts are molded, which not only avoids residual tensile stress on the surface of the part, but also obtains favorable compressive stress to the part. It should be noted that the use temperature of the parts treated by the shot blasting machine should not be too high, otherwise the compressive stress will automatically disappear at high temperatures, thus losing the expected effect. Their operating temperatures are determined by the material of the part, which is about 260-290 ° C for general steel parts and 170 ° C for aluminum parts.
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