Yong Wei mold steel, SLD material, Shantou SLD8 provided by Yong Wei steel mold. We are Dongguan City An Yongwei mold steel shop (www.dgyongwei.com) located: Dongguan, Guangdong specializes in: When steel, DC53, SKD11.SUS440C, SUS420 usually work forging die mold. Its cavity surface temperature up to 300 ~ 400 ℃ hot extrusion die up to more than 500 a 800 ℃; casting mold cavity temperature and the type of material and the die-casting temperature. As ferrous metal die-casting mold cavity temperature up to 1000 ℃ or more. This high mold temperature will significantly reduce the hardness and strength of the cavity surface, in use, prone to play crib. To this end. The basic performance requirements for thermal die steel is high resistance thermoplastic change, including high hardness and high temperature strength, high resistance thermoplastic change, in fact reflects the high stability of steel tempering. Uniform quality steel components, high tonnage cold shears, cut the head end surface smooth and tidy, but shoddy material difference due to the material, there are often cut off the meat first end surface phenomenon, namely uneven, and no metallic luster. And because of shoddy material product manufacturers cut less head, head and tail will be a big ears. The carbon content of the steel and alloying elements are often, it's thermal conductivity is poor. If heated too quickly, is bound to cause a lot of heat stress, this may not only cause heating of the workpiece becomes open SLD8 price, but the quality of heat treatment is unfavorable. Therefore, high carbon steel, high alloy steel, high speed steel type of steel must be heated slowly (or define certain heating rate), sometimes even before heating to the desired temperature once or twice to warm up. Such as high speed steel hardening, preheating it twice. According to the latest market report on the well-known steel information organizations "My iron and steel" provided SLD8 wholesalers last week, the domestic spot steel price index pulled back slightly to close at 111.11 points, down 0.08 percent week. Market participants observed last week and billet steel futures price linkage to rise, driven by a significant increase in confidence in the spot steel market. But by this week, futures and billet prices both correction, spot steel prices also will adjust the downstream is slowed down the speed of purchase.