Material related knowledge of stamping hardware mold
2023-03-07
The elimination method is a more convenient and practical method to identify stamping metal molds. The metal springs, stainless steel shrapnel and beryllium copper shrapnel are generally made of zinc alloy, stainless steel, iron, aluminum alloy and copper. Zinc alloy is the most widely used. Slightly high-grade products will use zinc alloy and aluminum alloy as raw materials. Iron is generally used for less high-grade products. Only high-grade products will use cast copper. Therefore, use various methods and experience to eliminate the wrong, and the rest is the correct material. stainless steel: Stainless steel for stamping hardware mould is an alloy, which is mainly named after the content of nickel, such as 304 stainless steel. There are several grades of stainless steel, 316L, 316, 304, 302, 206, 204, 202201. Generally, 304202 and 201 are commonly used. Therefore, stainless steel has no precise density. If we can know the proportion of its components, we can get the result through calculation. According to the main chemical composition, it is divided into chromium stainless steel, chromium nickel stainless steel and chromium manganese nitrogen stainless steel. They have different densities. Even the same material will vary with different components. 304 # stainless steel - SUS304, equivalent to 0Cr18Ni9 in China. Density is 7.85 g/cm3, chemical composition (%): C ≤ 0.15% Cr: 17 ~ 19% Si ≤ 1.5% Mn ≤ 2.0% S/P ≤ 0.05% Hardness 350-430HV minimum density 7.6G/CM3 When the surface of stainless steel for stamping hardware Mold is treated, it is generally enough after polishing. The stamping hardware mold can reflect the texture of stainless steel very well after polishing. Therefore, oil sealing and electroplating are rarely used because they are not necessary.
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