stainless steel tubes

S tainless steel sintered parts is stainless steel manufactured by powder metallurgy. It is a powder metallurgy material that can be made into steel or parts. Its advantages are to reduce the segregation of alloying elements, refine the microstructure, improve performance, save raw materials, save energy and reduce costs. Manufacturing process of powder metallurgy stainless steel parts. The first step is to determine the production process of powder smelting stainless steel seals: mold design and raw material determination-mold manufacturing-raw material mixing-mold installation and machine debugging production-stainless steel materials should be sintered in a vacuum furnace-machining-deburring-prevention Rust-impregnated oil-inspection qualified packaging. Powder metallurgy stainless steel seals are generally made of stainless steel SS316L or SS304L. At the same time, in order to reduce porosity, 2% to 8% copper-based alloy is added to 304 or 316 stainless steel powder. Because of the low melting point of copper, it will be used at 960 ℃ . A liquid phase begins to form, and all forms a liquid phase when the temperature reaches 1000 ℃ . When the temperature is higher than the melting point of copper, the flow of the liquid phase makes the surface pores continue to spheroidize and shrink; because copper has better wettability to the stainless steel matrix, it can be Evenly distributed on the stainless steel substrate, the pores of the sintered body are significantly reduced, and the sealing performance is significantly improved. Application areas of stainless steel powder metallurgy parts: automotive: brake parts, seat belt locking; household appliances: automatic dishwashers, washing machines, garbage disposal machines, juicers and other home appliances parts; industrial instrument parts, various small mechanical parts .