Use square shoulder milling cutter cavity coarse milling, semi-finishing would remove the bulk of the stepped cutting margin. This will allow the cutting force changes, so that the bending tool. The result is to leave uneven finishing allowance, thus affecting the geometric precision of the mold. If you use the tip strength weaker square shoulder milling cutter (with triangular blade) SUS440C hardness cutting will produce unpredictable effects. In heat production practice, the work of some of the special shape of the use of large or when the protective salt bath furnace heating method is not easy. If you must use box-type furnace or furnace heating SUS440C reflecting what is material, these large or special shape of the workpiece SUS440C price, according to the following methods to prevent oxidation and decarbonization work. Continued strength of the recent rise in construction steel kinetic energy has been significantly reduced, leading regional Beijing, Xi'an prices flat SUS440C, exploration up area is also just stay in the individual regions. Currently in Beijing, Tianjin steel prices remained at about 2750-2780 yuan, hot-rolled coil, cold rolled coil and plate market prices fell slightly accelerated momentum, Handan hot-rolled coil prices continue to refresh the current National Low 2920 Yuan, lock the current steel plate market price is still stuck in 2830 yuan, but the latest orders is less than ideal spot market mainstream, the lowest price is the probe to the 2830-2850 yuan, cold rolled coil market price adjustment region is today gradually increased. 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, to prevent deformation of 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, 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. SUS440C rod, Luoding SUS440C, Yong Wei steel mold 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!