Currently, there is excess capacity in the state of corundum, the next step will be the focus of national policy alumina industry backward production capacity, closure of some high-energy small alumina producers, out of a low-power smelting furnace encourage competitive enterprises, stronger big. Coated Abrasives in energy conservation policy, environmental pollution has become the most important of coated abrasives production process. While in the production process of the coated abrasive energy and pollution is not the most serious of tungsten steel, but the production process of air pollution particles in the waste water and industrial waste water pollution and damage to the environment. Vacuum heat treatment technology is developed in recent years a new type of heat treatment technology Dongguan tungsten steel, it has the characteristics, it is urgently needed in mold manufacturing fine particles of tungsten steel, for example, does not prevent oxidation and decarbonization heating, vacuum degassing or outgassing, eliminating hydrogen embrittlement, to improve the material (parts) ductility, toughness and fatigue strength. Vacuum heating is slow, small temperature difference between inside and outside parts and other factors, determines the vacuum heat treatment process caused by deformation and small parts. Factor in the number of die steel chemical composition, grain size, purity, carbides and inclusions, morphology, size and distribution, as well as the microstructure after heat treatment systems such as tool steel and heat treatment of steel were obtained a great deal of impact toughness. In particular purity and thermal processing of steel deformation transverse impact toughness is more obvious. Toughness, strength and wear resistance are often conflicting. Therefore, a reasonable choice of the chemical composition of the steel and the use of reasonable refining, thermal processing and heat treatment processes to make the mold material wear resistance, strength and toughness to achieve the best fit. Yong Wei steel mold (Dongguan) Co., Ltd., Dongguan _ tungsten steel tungsten steel _ provided by Yong Wei steel mold (Dongguan) Limited. Search for "mold steel, DC53, SKD11.SUS440C, SUS420" fly suppliers, network operators choose to have a full alliance Certified: Dongguan City An Yongwei steel mold shop (www.dgyongwei.com), trustworthiness and reliability, now click on "Commercial Union customer service" on page live chat with us now!