Yuanling SKH-9, SKH-9 material, Yong Wei steel mold (certified merchants) provided by the Dongguan City An Yongwei steel mold shop. Dongguan City An Yongwei mold steel shop (www.dgyongwei.com) is a professional "mold steel, DC53, SKD11.SUS440C, SUS420" of the company. Since its inception, we adhere to the "honesty, sound management" approach, the courage to healthy competition in the market, so that "Sweden Assab, Daido, Hitachi, Austria Bluff" brand has a good reputation. We adhere to the "service first, customers first" principle, the permanent mold steel Granville won the trust of customers congregation in special steel, and establish a good corporate image. Special Note: This information is for reference pictures and information, please contact us to obtain the most accurate information, thank you! Good surface corrosion workability and corrosion resistance: easy plastic pattern SKH-9 is formed of high speed steel, and some plastics such as polyvinyl chloride in hydrochloric acid gas generated during the forming of the cavity corrosion. So for corrosive gases used in plastic SKH-9 manufacturers, to consider the corrosion-resistant steel is good. To a reasonable choice of the chemical composition of the steel and the use of reasonable refining, thermal processing and heat treatment process to make the mold material wear resistance, strength and toughness to achieve the best fit. Strong wear resistance steel mold, in addition to steel mold steel also has the ability to thermal fatigue. Hot work die steel under service conditions in addition to cyclical changes in load, but also subjected to high temperatures and periodic thermal shock effect. Compared with the hardening atmosphere under vacuum oil quench hardening mold surface is relatively uniform, but slightly higher, mainly due to the vacuum heating, mold steel surface was an active state, not removal, does not produce an oxide film impede cooling. Heating under vacuum, the surface of the steel degassing effect, and thus has high mechanical properties, the higher the degree of vacuum in the furnace, the higher the bending strength. After vacuum hardening, improved fracture toughness of the steel, die life generally increased by 40% to 400% higher than the conventional process, or even higher. Cold mold vacuum hardening technology has been more widely used. Because many varieties of plastic, plastic products, requirements differ greatly, for the manufacture of plastic mold materials are also proposed a variety of different performance requirements. Therefore, many industrialized countries have formed a wide range of plastic mold steel series. Including carbon steel, carburizing plastic mold steel, pre-hardened plastic mold steel, age-hardening plastic mold steel, corrosion resistant plastic mold steels, free cutting plastic mold steel, through hardened plastic mold steels, martensitic maraging steel and mirror-polished plastic mold steel. The main complex shape, acting demanding small size parts including steel parts, carbon steel parts, the relatively poor thermal conductivity of parts made of steel, etc. SKH-9 clinker, to prevent deformation, the characteristics important to prevent cracking. Such a situation can be used quenching. Usually salt bath quenching, its temperature slightly below the transition temperature martensite start SKH-9, so red-hot piece avoid direct rapid cooling, the thermal stress reduction without affecting the amount of martensite obtained. Dongchu willingness inland mills raw materials is relatively high, steel mills along the coast will be appropriately reserves. Changes in domestic and medium-sized steel mills imported iron ore from the average number of days available inventory point of view, 2011 to 2013, during the Spring Festival every year to October, the average number of days available inventory increased by 2 days, 18 days and 8 days, including 2011 In the fourth quarter due to the overall average number of days inventory is available in more than 30 days of high level, so the replenishment efforts is relatively small.