Yong Wei mold steel _HPM1 sheet _ Hechi HPM1 provided by Yong Wei steel mold. We are Dongguan City An Yongwei mold steel shop (www.dgyongwei.com) located: Dongguan, Guangdong specializes in: mold steel, DC53, SKD11.SUS440C, SUS420 plastic mold steel work, under long-term effects of cyclic stress, often leading to fatigue fracture. In the form of small energy repeated impact fatigue fracture, tensile fatigue fracture contact and bending fatigue fracture fatigue fracture heat at a high temperature working die, required to maintain its organization and stability, thereby maintaining high enough hardness HPM1 die steel, this performance is called red hardness. Carbon tool steels, low alloy tool steel is usually able to maintain this performance in the temperature range 180 ~ 250 ℃, the chromium-molybdenum steel hot die generally within a temperature range of 550 ~ 600 ℃ to maintain this performance. Red hardness of steel depends on the chemical composition and heat treatment of steel. Studies show that high-carbon and low-alloy tool steel and high-carbon steel can be carried out in carburizing or carbonitriding. Low-carbon steel carburizing or carbonitriding, should choose a lower heating temperature and shorter holding time as possible, then you can ensure that there is more surface core undissolved carbides, carburizing and carbonitriding After penetration, surface granular carbide, carbide, there was a marked increase in the total volume can increase wear resistance of steel. By using good programming, circular blade cutter can largely replace ball mills. Small circle runout of the blade and grinding, positive rake angle and light cutting geometry combined with HPM1 sheet can also be used for semi-finishing and some finishing processes. The ingredients are by high temperature diffusion homogenization, in some cases also for stress relief. Usually applied to segregation of castings, forgings, castings eliminate casting stress, improve cutting performance. Heated to 150-200 degrees, controlling the heating rate of 100-120 per hour. Heating holding time 2-3min / mm, after the end of the incubation time with the furnace was cooled to 350 degrees Celsius oven. To implement the State Council's "Air Pollution Prevention Action Plan" and the related deployment, vigorously promote public transport and other public services, Beijing, Tianjin and new energy automotive applications, and actively create green public transport system, effectively promote the prevention and control of air pollution in Beijing, Tianjin HPM1, efforts to achieve Beijing, Tianjin and air pollution control targets for Beijing, Tianjin, Hebei urban agglomerations (Shijiazhuang (including Xinji), Tangshan, Qinhuangdao, Handan, Baoding (including Dingzhou), Xingtai, Langfang, Hengshui, Cangzhou, Chengde, Zhangjiakou) in the bus other public services, the promotion of new energy vehicles, the next two years to promote public transport in Beijing, Tianjin 20,222 new energy vehicles. Processing and heat treatment of high alloy tool steel, low alloy tool steel than is usually more difficult, so the mold manufacturing costs are higher, while the ASP-23 high speed steel powder its machinability, manufacture than traditional methods of high-alloy tool steel Fortunately, dimensional stability, heat treatment is relatively good, and easy to predict. More because of ASP-23 high hardness, good toughness and high temperature tempering characteristics, especially for surface treatment, very easy to process.