Stainless steel can keep the surface clean, so its heat transfer is better than other metals with higher thermal conductivity. Liaocheng Suntory Stainless Steel provides technical standards for stainless steel marking plates corrosion resistance of stainless steel marking plates, bending workability and toughness of welded parts, and high-strength stainless steel marking plates with excellent stamping workability of welded parts and manufacturing methods thereof.
Specifically, it contains C: 0.02% or less, N: 0.02% or less, Cr: 11% or more and less than 17%, the appropriate content of Si, Mn, P, S, Al, Ni, and satisfy 12≤Cr Mo 1.5Si≤ 17. 1≤Ni 30(CN) 0.5(Mn Cu)≤4, Cr 0.5(Ni Cu)3.3Mo≥16.0, 0.006≤CN≤0.030, the stainless steel marking plate is heated to 850～1250℃, then proceed to 1℃/ Heat treatment for cooling at a cooling rate above s. In this way, it can be a high-strength stainless steel marking plate with a structure of martensite with a volume fraction of more than 12%, high strength of more than 730MPa, corrosion resistance and bending workability, and excellent toughness in the weld heat affected zone. Reusing Mo, B, etc. can significantly improve the stamping performance of the welded parts.
