The use of the workpiece is heated to a higher temperature and a longer time for the aging treatment aging treatment process, known as artificial aging treatment, when the workpiece is placed at the natural conditions or prolonged storage at room temperature aging phenomenon occurs is called the natural aging treatment. The purpose of the aging treatment, to eliminate the internal stress of the workpiece rod SUS440C, stabilize the organization and size, to improve the mechanical properties. The source of high energy beam heat treatment usually refers laser, electron beam, ion beam or the like. Their common features are: supply of steel mold surface power density of at least 103W / cm 2. Their common features are: fast heating, heating area can be selected according to the needs of small deformation of the workpiece, does not require a cooling medium, the processing environment clean, good controllability, easy to implement automated processing. At home and abroad on the principle of high-energy beam of heat treatment, process etc to invest more research, more mature laser transformation hardening, small and medium-power electron beam treatment of ion implantation and improve die life gained a level applications . From the trend of the domestic steel price index situation, late June, the trend began long products price index was weaker than plate price index. The continuation of this trend in the third quarter, and the weak trend of long products price index trend of expansion. The third quarter of this year, long products price index trend has been weaker than the price index sheet, and long products price index accelerated in mid-September to late fall when. Behind this is the real estate industry continues to decline in influence. These defects with the increase in the size of the ingot mold and increasingly serious. On the other hand, osteoporosis, dendrimers and carbides must guarantee the elimination of defects such as forging a certain ratio, the smaller the ingot is not desirable. For this contradiction, the general approach is to ensure that the conditions under forging ratio, try using small ingots. Because of the small size of the ingot cooling conditions better SUS440C, internal organization ingot denser, less serious casting defects. For high-alloy (eg Cr12 type ledeburite) steel, generally smaller size should ingot, forging ratio by forging methods to ensure. Large sophisticated casting mold has been able to produce a whole escalator pedal die casting, automotive die casting rear axle gearbox housing and automotive engine casting mold. From the industry structure, the rapid development of private enterprises, state-owned enterprise vitality, market-oriented professional mold manufacturer number and capacity increased rapidly, to adapt to the characteristics of the production mold industry gathering mold production parks have been developed, such as mold industry underdeveloped central and western regions have greater progress. Shoddy die steel containing impurities, the density of steel is small, but size tolerance serious, so in case there is no vernier caliper, check that it can be weighed. For example, for steel 20, the national standards set forth in the most negative tolerance of 5%, length 9M single theory when it weighs 120 kg, and its minimum weight should be: 120X (l-5%) = 114 kg, Weigh out the actual weight of 114 kg single smaller than it is shoddy steel SUS440C price, because it exceeded the 5% negative tolerance. Generally the whole proportionate amount would be better SUS440C hardness, mainly taking into account the cumulative error and probability theory this problem. From the third quarter, prices of raw materials in general market conditions, the July 4 - September 26, Qingdao, Hong Kong and Australia 62.5 percent grade Newman iron ore fines prices fell 14%, 66% Qian'an area grade iron ore fines prices up 6%, the price of metallurgical coke in Shanxi Changzhi regional level fell 3 percent, Taiyuan, Shanxi coking coal prices fell by 7%, Tangshan market Kocak carbon billet (size 150mm × 150mm, material Q195-Q235) prices fell 12.1%, Anshan market 6mm above specifications heavy scrap prices fell 12.4 percent. SUS440C material, CENXI SUS440C, Yong Wei steel mold provided by the Dongguan City An Yongwei steel mold shop. Dongguan City An Yongwei mold steel shop (www.dgyongwei.com) strong, credible, in Dongguan, Guangdong special steel industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement AsiaVest innovative ideas will lead you hand into the mold steel and brilliant for a better future!