Yong Wei mold steel | XW-41 clips | Wulong XW-41 provided by Yong Wei steel mold. We are Dongguan City An Yongwei mold steel shop (www.dgyongwei.com) located: Dongguan, Guangdong specializes in: mold steel, DC53, SKD11.SUS440C, SUS420 chemical treatment include carburizing, nitriding, boronizing, multicomponent permeation, etc. . Processing methods can be divided according to the gas law, solid law, bath method. Selection of different penetration enhancers and process parameters on the formation of gas carburizing, solid carburizing and salt bath carburizing. Gas method the workpiece is heated in an oven, into the reaction gas at a high temperature activating gas atoms into the workpiece surface. Gas method is relatively simple, but the processing time is generally longer. Solid method is powdered solid penetration and the workpiece is buried in the box, placed in an oven heated, the advantage is simple, the drawback is the quality of the diffusion layer is not stable enough, when a large box of air pollution. Salt bath method is heated to melt the solid state penetration, the workpiece is placed inside the heating bath, the diffusion layer is generally better quality XW-41, suitable for Boronizing. Permeation and salt bath salt bath nitriding reaction of cyanide salts or required in the use of cyanide occurs, which all belong to virulent, should be carefully selected. Meanwhile alloy content increases, but also strengthen the austenite, it is difficult to stress relaxation by plastic deformation, thereby increasing heat stress, increased quench cracking tendencies. However, increased content of alloying elements to improve the steel hardenability, quenching medium available gentler and quenching can reduce quench cracking tendencies. In addition, some alloying elements such as vanadium, niobium, titanium, which are austenite grain refinement effect, reducing the tendency to overheat the steel, thereby reducing the tendency to quench cracking. Cavity surface of the metal thermal fatigue (cracking). Hot mold work is characterized by intermittent. Each time the thermal state of the metal to be formed after the water cooling of the mold cavity surface of oil, air and other media. As such. Hot work die repeatedly heat and state cooled so molding skin produce repetitive expansion and contraction of metal cavity, which repeatedly subjected to tensile and compressive stress. As a result, surface cracks caused by the mold cavity, called thermal fatigue phenomenon, whereby hot die steel is proposed for the second basic performance requirements. That has a high thermal fatigue resistance. Diameter size shoddy steel fluctuations due; L, steel surface temperature instability yin and yang. 2, the composition of the steel uniform. 3, due to poor equipment, low ground strength XW-41 rod, Source: mold technology mill Colloction big bounce. There will be changes in the larger inner diameter of the same week, so easy to produce steel discontinuity fracture. Heat treatment of high-energy beam source usually refers to the laser, electron beam, ion beam Sweden XW-41 mold, their common features are: feed material surface power density of at least 103W / cm2, their common features are: fast heating, heating area can be selected, the workpiece deformation is small, does not require a cooling medium, to deal with environmental clean XW-41 tool steel, good controllability, cheap to implement automated processing. Heat treatment of high-energy beam principle, process etc invested abroad more research, and improve die life in terms of access to applications.