As a conventional abrasive jet technology, sandblasting has been continuously developed, improved and perfected. With its unique processing mechanism and wide range of processing and application, sandblasting has become more and more popular in today's surface treatment industry. Used in machinery manufacturing, instrumentation, medical equipment, electronic appliances, textile machinery, printing and dyeing machinery, chemical machinery, food machinery, tools, cutting tools, measuring tools, molds, glass, ceramics, handicrafts, machinery repair and many other fields. First, the main purpose of the sand blasting machine: 1. Cleaning and strengthening of the outer surface of the component; 2. Cleaning and strengthening of fixtures and materials; 3. Surface cleaning of parts before electroplating, oxidation and painting; 4. Remove contaminants from surfaces such as barrels, tubes, trays, cans, and utensils; 5. Cleaning of tools, molds, pipes, plates and operating parts; 6. Surface cleaning of glass molds, rubber molds, metal castings and extrusions; 7. Trimming the weld; 8. Work surface glaze; 9. Remove the oxide scale on the surface of the workpiece and remove the chromatic aberration (castings, forgings) after the processing; 10. Clean up large turbines, engine castings or complex small parts; 11. Clean up parts (such as cylinder block, piston and spark plug) during engine repair; 12. Clean the surface of brushes, contactors and wiring to improve the conductivity; 13. Cleaning and preservation of parchment and other works of art; 14. Remove old paint, dirt, etc. from the surface of the workpiece. Second, the advantages 1. The metal parts are basically not damaged, and the dimensional accuracy does not change; 2. The surface of the part is not contaminated, and the abrasive does not chemically react with the material of the part; 3. It is easy to handle the difficult-to-contact areas such as grooves and recesses. A variety of abrasive materials can be used. 4. The treatment cost is greatly reduced, which is mainly reflected in the improvement of work efficiency and can meet various surface finishing requirements; 5. Low energy consumption and low cost; 6. Does not pollute the environment, eliminating the cost of environmental management; 7. Not harmful to the surrounding environment.