Feb 11, 2021
Shot blasting (sand) technology is divided into shot blasting and shot blasting (sand) technology. There are also some industries called sand blasting, sand blowing, bead blasting, blasting, etc. It was first used for casting and forging parts such as sticky sand and oxide skin. Remove. Shot blasting uses a high-speed rotating impeller to throw the shot sand out and hit the surface of the part at high speed to meet the requirements of surface treatment. The shot speed is generally 50-100nds. Shot blasting (sand) is driven by compressed air through special tools (generally including shot blasting device and spray gun), and sprayed on the surface of parts at high speed. The impact and friction of the shot sand are used to achieve the surface treatment requirements. The speed of shot sand is generally 30～50m/s. In the 1930s, the American Wheelabrator Company made the first shot blasting machine in the world. The production of shot blasting equipment in China began in the 1950s, mainly imitating the technology of the former Soviet Union. In the early 1960s, Qingdao Machinery Factory designed and produced a Q31 lO drum shot blasting machine, marking the transformation of China's shot blasting technology and equipment from pure imitation to self-development and manufacturing. China also began to have shot blasting equipment. Professional manufacturer.
Over the years, the shot blasting technology and equipment have been perfected and the performance has been continuously improved. The application scope has expanded from pure surface cleaning in the foundry industry to metallurgical mining, machinery manufacturing, automobile tractors, weapon manufacturing, textile machinery, ships, vehicles, aviation and aerospace. In the industry, its process range has also expanded from the surface cleaning of castings and forgings to the strengthening of metal structural parts, surface processing, shot blasting and other different fields. With the wide application of shot blasting technology, there have been thousands of specifications and varieties of shot blasting equipment that meet the requirements of various processes have been developed in the world. In turn, the development of shot blasting equipment has promoted the development of shot blasting technology. Expanding the application of shot blasting process.
Abrasive (projectile or shot sand) is the medium used in the shot blasting process. It is divided into many categories according to shape, size, hardness, material, etc., and selected according to different shot blasting process requirements, and its quality also affects the quality of shot blasting. Therefore, abrasives are also an indispensable part of shot blasting technology, and together with shot blasting equipment constitute shot blasting technology. The projecting of metal materials such as steel or iron is generally called shot blasting, and the projecting of abrasives such as quartz sand and steel grit is generally called sand blasting.
