Usually when forging die work. 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. Compressive strength and the compressive yield strength of the mold is often subjected to high bending strength and bending stress in use, thus requiring the mold material should have a certain compressive strength and flexural strength. In many cases, the compression test and bending test conducted conditions close to the actual operating conditions of the mold (for example, the measured compressive yield strength of the steel mold and punch work has shown more consistent deformation resistance) . Another advantage of the bending test is to be absolute value of the variable, and can be more sensitive to reflect differences in deformation resistance under different heat treatment and texture between different kinds of steel. Alloy steel and high carbon steel parts carbon ratio, high carbon steel tools, molds and other parts, in order to reduce deformation and cracking, often using isothermal quenching methods. The finished piece is heated rapidly quenched slightly above the horse's transformation began isothermal isothermal bath furnace to complete bainite transformation occurs, get lower bainite isothermal quenching operation called quenching. Austempering get is bainite rather than martensite. But with considerable good mechanical properties. The main factor is the restricted cross-sectional size of the workpiece. From the third quarter of 2014, the number of available iron ore average inventory days look Hitachi mold steel, the overall downward trend was shock, mainly due to new production overseas iron ore market is significantly higher than China, the biggest consumer of iron ore The new demand Sweden Assab mold steel, supply and demand pattern of international iron ore market has undergone substantial changes. Second, China's real estate industry is subject to adjustment for up to 10 months, consumer confidence in the market share of the largest iron and steel industry, demand for building materials suffered a serious setback, combined with the previous two years, the steel trade and industry has been a continuous shuffling, steel demand and trade aspects of the terminal both weaken confidence in the market formed a great impact on commodity spot prices of steel-related industries were hit this year's low, futures prices also repeatedly refresh the lowest since listing. Japanese Daido Steel, Xintian mold steel, die steel AsiaVest provided by Dongguan City An Yongwei steel mold shop. "Die steel, DC53, SKD11.SUS440C, SUS420" preferred Dongguan City An Yongwei steel mold shop (2), the company is located at: 3 A, Dongguan City Changan Ha Kong, the first industrial zone, over the years, Yong Wei mold steel stick providing customers with the best quality service, contact: Simon / R. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Yong Wei mold steel expect to be your long term partner!