Also can effectively improve the low magnification and density of steel by ESR and improve mold steel isotropic. Some domestic production plant test description EAF steel production 4Cr5MoSiV1 transverse impact toughness value is only about 31% of the longitudinal, after 4Cr5MoSiV1 by remelting of steel, transverse impact toughness values ??can be equivalent to 70% of the longitudinal, increased by more than 1 times. For the special requirements of the steel mold, then using a powder metallurgy process to produce high-speed steel and high-alloy tool steel powder, can better improve the microstructure and properties of the steel. The advantage of this method is that no special equipment SKD61 low cost, easy. But it also has the most serious drawback, namely the risk of cracking and peeling plaster there in the heating process, therefore, there may be a partial oxidation and decarbonization; the second is an ointment exist on the surface, the impact quenching quality (reducing coolant cooling capacity and paste objects falling within the hardening agent will change the coolant cooling rate); the third is difficult to clean hardened workpiece; four is coated with a large amount of smoke when heated workpiece paste material for the furnace and the environment adversely. In the continuing weakness of the state of the market, China's steel output or "pressure not down." September nationwide average daily crude steel output remained slight increase QoQ; average daily production of steel is the second highest on record. Thus, the contradiction between the long-term accumulation of iron and steel industry has a very complex factors, not "profit loss on the pressure of production, elimination" so simple. The use of the workpiece is heated to a higher temperature and a longer time for the aging treatment aging treatment SKD61 rod, called artificial aging treatment, when the workpiece is placed at the natural conditions or prolonged storage at room temperature aging phenomenon occurs, called natural aging. The purpose of the aging process, eliminate the internal stress of the workpiece, stable 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, no cooling medium SKD61 price, dealing with environmental clean SKD61 material, 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 were better, more dense internal organization ingot casting flaw less serious. For high-alloy (eg Cr12 type ledeburite) steel, generally smaller size should ingot, forging ratio by forging methods to ensure. SKD61 price _ Luoding SKD61_ AsiaVest 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!