Yong Wei mold steel, YK30 wholesalers, Yulin YK30 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, carbon content and alloying elements of steel SUS420 steel for quenching crack tendency important affected. 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 increasing the carbon content YK30, thermal stress on the weakened tissue stress enhancement. When quenching in water, the surface compressive stress of the workpiece 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 its mechanical properties, 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 YK30 wholesalers in quenching, tempering steel, after the cryogenic treatment once again remains tempered. 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. At present, China's mold industry is entering an important period of development. Manufacturing development of the automotive industry in particular, to promote domestic mold growing market, foreign customers to purchase the mold of an increasing number YK30 material, the international trend of China's mold manufacturing gradually shift is very obvious. China Die & Mould Industry Association predicted that this year the market continues to improve at home and abroad mold, mold industry in China will maintain an annual growth rate of about 20%. Precision plastic mold has been able to produce plastic molds for cameras and mobile phones, multi-cavity mold and a small modulus gear accuracy of 5 microns 7800 cavity plastic mold. Cold mold material alternative technologies require cold mold material has the strength, toughness, wear resistance, fatigue resistance performance and bite. S136 cold mold using the high carbon carbon steel, low alloy steel or cast iron after Laser Transformation Hardening replaced by the traditional process of high-grade materials, the presence of a wide range of applications of space technology. S136 unique wearable effect YK30 high alloy tool steel, although widely used with a cold mold alloy carbides, but the laser phase transformation strengthening its dispersion strengthening, distortion enhancement, processing and heat treatment process without oxidation and decarbonization without having etc. Strong working layer, S136 can compensate for the effect of high wear-resistant alloy steel has a carbide. Steel prices in mid-September to late 'cliff-style "down. From the third quarter of the overall steel trend, July ~ August, showing an overall decline in steel prices, the average price declines five major varieties of the nation's major markets for 2 yuan / ton to 39 yuan / ton. In early September prices rose slightly after the round, the overall steel prices (excluding prices of cold rolled coils outside) along with presenting "cliff-style" down, steel refresh the past 10 years the price low, the national average price of long steel products 50 yuan / ton to 70 yuan / ton decline, hot rolled coil and plate average price 50 yuan / ton to 60 yuan / ton decline.