Isothermal annealing is mainly used to refine the organization of carbon steel, alloy steel forgings, stampings, etc., reduce the hardness to prevent white spots and even organizations. Annealing is heated to 30-50 degrees Celsius above Ac3 DC20 tungsten steel prices, isothermal above Ac1 20-30 degrees Celsius, insulation can be adopted in accordance with the fully annealed. Cooling rapidly cooled to below Ac1 isotherm. Isothermal time more important: Carbon 12 hours, alloy 3-4 hours. And so the end of the warm time, remove the air cooling. In fact, foreign anti-dumping on the domestic mills is not much more than the size of the impact at this stage the uproar, after all, this type of steel production product regular, reliable quality, reasonable price in the eyes of foreigners peers gold is still very full and formal channels conduct is also the case of tungsten steel A10, not only does the anti-dumping storm blowing its body, but also the opportunity to get rid of the market in shoddy, disrupt the black sheep of the international market trading order. So basically these mills sit back, quite see Pretrial blossom, since the extra cash I chic style. Shantou increasingly large steel mold, especially in increasingly large molding parts, in order to improve production efficiency, a multi-cavity mold, so a large block of steel demand will increase year by year; precision molds increasingly high requirements for the quality of steel is good, size high accuracy, good stability; the demand for plastic mold steels, die casting mold steel is increasing; the demand for high-grade steel mold growing CD650 tungsten steel, increasing surplus low-grade tool steel. The new high-performance cold work die steel SLD-MAGIC performance increase die life and reduce the total cost of production molds and shorten delivery of respect shown considerable advantage. Mainly reflected in the following aspects: - abrasion resistance: The maximum hardness HRC62 its wear resistance increases by about 35%, a substantial increase die life. - Surface treatment of: Surface treatment adhesion film (CVD and other methods) increases by about 30%, high-strength steel to prevent bending, stretching and other scratches generated during forming. - Heat Treatment characteristics: heat-inch variant was reduced by approximately 40%, the deviation shape will be improved. For the size of the heat treatment and surface modification treatment is less, reduce the repair time. - Cutting: the cutting resistance increases by about 35%, based on improving processing efficiency, shorten the processing time in the mold manufacturing. More wear resistance, heat characteristics, surface treatment resistance, machinability characteristic values ??is carried out with the company representative data to compare the material SLD8 possible and actual product resulting property values ??differ slightly. Aging is an important heat treatment operations. The workpiece is heated to below the solubility line of tungsten steel, relatively long periods, so that part of the solid solution decomposition, chemotaxis determinate. Sometimes the aging process so that the hardness is improved, so that the hardness of the material can sometimes be reduced. Using, respectively, depending on the material composition, heating temperature, holding time and other factors. Aging such as cast iron may be at a relatively low temperature, aging the aluminum alloy at about 200 degrees Celsius. China Steel Association data show September 29 direct imports of iron ore 62% grade ore CIF dry powder for $ 78.01 / ton. September average price of $ 82.49 / ton, while the price of imported iron ore was in the beginning of $ 130 / ton, 2011 more was as high as $ 170 / ton. The reason why iron ore prices fell sharply, mainly due to China's domestic demand is weak, while iron ore production is increased, the supply of new large scale. CD650 tungsten steel tungsten steel _ _ Yongchuan AsiaVest steel mold (View) provided by the 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!