Due to the high demand for mold surface quality and distortion, high-pressure gas quenching vacuum mold heat treatment has almost become an irreplaceable technology. Currently in the south and east coast, slightly scale private heat treatment processing enterprises have at least one 0.4MPa (most have six) high pressure gas quenching vacuum heating furnace. In the cutting tool industry, widely used in CNC and machining centers, strong demand tools with high quality and long life, while the city's environmental protection also proposed more stringent requirements for heat treatment, vacuum heat high pressure gas quenching has thus become an alternative heat treatment of high speed steel cutting tools Hardening of the first salt bath process. FDAC mold steel with a rapid tooling RD25, excellent high temperature strength and wear resistance, hardness at the factory has reached HRC40-44, so no heat can be used directly in the production time can be greatly reduced mold processing. The carbon content of the steel and alloying elements have an important impact on the quench cracking tendency of steel. In general, with increasing carbon content of martensite, brittle martensite increases, reducing the brittle fracture strength of steel, increasing the tendency of quenching cracks. When the carbon content increases, thermal stress on the weakened tissue stress enhancement. Import RD25, the surface compressive stress of the workpiece during the quenching in water becomes small, and the maximum value of the tensile stress near the middle of the surface. When quenching in oil, the surface tensile stress becomes larger. All these have increased the quench cracking tendencies. Die steel by cryogenic treatment (-196 ℃), can improve the mechanical properties RD25 suppliers, some die after cryogenic treatment significantly increased service life. Cryogenic steel mold can be carried out between the quenching and tempering processes, but also for cryogenic treatment after quenching and tempering. If you still retain residual austenite in quenched and tempered steels, then after cryogenic treatment remains tempered once again. Cryogenic treatment can improve the wear resistance of steel and temper resistance. Cryogenic treatment not only for cold mold, can also be used for hot work die and carbide. Yong Wei mold steel _RD25 suppliers _ Liuzhou RD25 provided by Yong Wei steel mold. Looking for "Die steel, DC53, SKD11.SUS440C, SUS420" reliable supplier, choose to have the entire network ShangMeng Certified: Dongguan City An Yongwei mold steel shop (www.dgyongwei.com), trustworthiness and reliability, now click on "Commercial Union Support" on page live chat with us now!