There are some oxide skin, old coating and rust on the surface of some workpieces that affect the normal production process of workpieces, so it is necessary to use a sandblasting machine to sandblast the surface of workpieces. The derusting work of sandblasting machine is the most commonly used surface treatment of sandblasting machine, but we have different sandblasting methods to deal with different workpiece rust. Today, Suzhou small sandblasting machine will give you a detailed introduction of different derusting methods of sandblasting machine.
1. Sand blasting machine can use high pressure water abrasive to remove rust. The impact of high pressure water jet (plus abrasive grinding) and water prying are used to destroy the corrosion and the adhesion of the coating to the steel plate. It is characterized by no dust pollution, no damage to the steel plate, greatly improving the efficiency of derusting, up to more than 15m2 / h, and good derusting quality. However, the steel plate after derusting is easy to return to rust, so it is necessary to apply special derusting coating with moisture, which has a great influence on the coating of general performance coating.
2. Sand blasting machine can use shot blasting to remove rust. Shot blasting is a kind of relatively advanced mechanical treatment method for rust removal of hull steel materials. It not only has high production efficiency, but also has low cost and high degree of automation. It can realize assembly line operation with less environmental pollution, but only operates indoors.
3. Sand blasting machine can use small wind or electric derusting. It is mainly driven by electricity or compressed air, and equipped with appropriate rust removal device to carry out reciprocating or rotary movement, so as to meet the requirements of rust removal in various occasions. For example, angle grinder, wire brush, pneumatic needle cluster rust remover, pneumatic hammer, tooth type rotary rust remover, etc., are semi mechanized equipment, with light tools and great mobility, which can thoroughly remove rust, old coating, etc., and can roughen the coating. The efficiency is much higher than that of manual rust removal, up to 1-2m2 / h, but the oxide skin can not be removed, the surface roughness is small, and can not be excellent The quality of surface treatment is better than that of spray treatment. It can be used in any part, especially in the process of ship repair.
4. Kunshan sandblasting machine can use shot blasting (sand) to remove rust. It is mainly composed of particle jet erosion to achieve surface cleaning and appropriate roughness. The equipment includes open shot (sand) derusting machine, closed shot (sand chamber) and vacuum shot (sand) blasting machine. The open shot peening (sand) machine is widely used. It can thoroughly remove all impurities on the metal surface, such as oxide skin, rust and old paint film. The efficiency of rust removal is 4 ~ 5m2 / h, the mechanical degree is high, and the quality of rust removal is good. However, due to the fact that Abrasives can not be recovered generally, which has an impact on other operations, it is troublesome to clean up the site. Therefore, the environmental pollution is more serious and has been gradually restricted.
The above is all the methods and skills of sand blasting. I hope you can help us by reading this article.