How rational use of die steel rolled plate and forging module, forgings? A: The market is well-known materials such as imported brands 1.2738,1.2311,1.2312, SP300, SP350 and other steel SKD12 plate, its essence is forging pre-hardened module. So, what module and plate rolling difference? Judging from the production process, will be able to glance: the production process modules: EBT EAF (avoid oxide slag into the ladle refining process steel slag separation method) / LF refining (using a ladle of molten steel refining) → VD vacuum de- gas (reduce the amount of steel H reduce cracking, shrinkage, subcutaneous bubbles, central loose steel) / argon casting / slow cooling annealing / finishing ingot / ingot heating / 3150 ton hydraulic press forging / heat / four roughing / testing → ends of sawing / delivery. Rolled plate production process: A, furnace / secondary refining / casting / rolling; B, blast furnace / hot metal pretreatment / converter / secondary refining / casting / rolling; M202 has been heat-treated steel SKD12, SKD12 uniform hardness round rods, up 278-311HB, 29-33HRC, made mold will never change, excellent cutting and polishing performance for electrical erosion operation SKD12 tool steel, can be flame hardened, chrome plated and nitriding. Chemical Composition C W tungsten carbon chromium Cr Mn Si silicon manganese vanadium V 0.95 0.5 0.5 1.1 0.3 0.1 Specification M202 factory specifications: Pre-hardened to 950-1050N / mm2 (29-33HRC). M202 uses: all size plastic molds, and can be used for tin, lead, zinc alloy die-casting mold of the mold base. M202 Forged: 1050-850 ℃ furnace cooling. M202 mass recovery: 850-900 ℃ furnace cooling. M202 stress relief: After the heat evenly, stay cool in the oven for 1-2 hours. M202 quenching: Oil 840-860 ℃ or air: 860-880 ℃. Stay for at least 10 minutes, and the thickness of 20mm, see more than half minutes per 1mm, so that hardness of about 54HRC. M202 tempering: stay at least 1 hour tempering, each will have more than one hour more than 20mm 20mm thick or more. Yong Wei mold steel rod _ _SKD12 Shantou City SKD12 provided by Yong Wei steel mold. Search for "mold steel, DC53, SKD11.SUS440C, SUS420" fly suppliers, network operators choose to have a full alliance Certified: Dongguan City An Yongwei steel mold shop (www.dgyongwei.com), trustworthiness and reliability, now click on "Commercial Union customer service" on page live chat with us now!