Of SKD11 Hitachi SLD special cold mode alloy steel] die steel to meet the conditions of work requirements, process performance requirements and economic requirements and work conditions: wear resistance, billet in the mold cavity in the selection of roughly on how to choose the right mold steel plastically deformed when generating current and slide along the surface of the cavity, generating intense friction between the mold cavity surface with the blank, causing mold and failure due to wear, so the basic mold wear, one of the most important performance . The hardness of the main factors affect the wear resistance, under normal circumstances, the higher the hardness of the mold parts, wear two smaller, the better the wear resistance. In addition, the wear resistance material carbide type, quantity, shape, size and distribution. Strength and toughness: Under normal circumstances, the working conditions of the mold is very bad, sometimes withstand greater impact loads, resulting in brittle fracture. To prevent a sudden brittle fracture at work when the mold parts, the mold having a high strength and toughness. Resilience Resilience of the mold depends mainly on the carbon content of the material, grain size and organization of the state. Fatigue fracture properties: die working process, the long-term effects of the amount of cyclic stress often leads to fatigue fracture in the form of a small energy repeated impact fatigue fracture, tensile fatigue fracture, contact fatigue fracture and bending strength and toughness. Fatigue fracture properties of the mold depends primarily on its strength, toughness, hardness and material inclusions content. Temperature performance: the higher the operating temperature of the mold will cause the hardness and strength decrease, leading to early wear of the mold or plastic deformation and failure. Thus, the mold material should have high temper resistance, to ensure that the die at the working temperature, having a high hardness and strength. Resistance to thermal fatigue properties: some mold in the work process is repeated heating and cooling state, so that the cavity is subject to tension, pressure, alternating stress, causing the surface cracking and peeling, increased friction, hinder plastic deformation, reducing the dimensional accuracy of the resulting die failure. Hot work die failure of one of the main forms of thermal fatigue, of such mold should be a higher resistance to thermal fatigue performance. Corrosion resistance: some molds such as plastic mold, plastic work due to the presence of chlorine, fluorine and other elements, and after the heat will break precipitated HCI, HF and other strong invasion gas erosion of the surface of the mold cavity, to increase its surface roughness, exacerbate wear lapse. SKD11 | rod sales: 6mm-350mm in diameter, have a spot SKD11 | rod Category: car light circle, pull light circle, black fur round SKD11 | plate sales: thickness 6mm-300mm, both spot SKD11 | sheet classification: machine rolling plate, forging, plate, forging, plate, bar plate SKD11 | Note: retail, wholesale at wholesale prices from 1 ton sales SKD11 Hitachi (SLD) special cold mode alloy steel JIS G4404 AISI-D2 main ingredient:% C Si Mn Cr Mo VPS 1.50 0.25 0.45 12.00 1.00 0.35 ≤ 0.025 ≤ 0.01 carbon silico-manganese, chrome vanadium molybdenum, phosphorus and sulfur steel Features: This steel is a high carbon, high chromium steel, wear resistance and toughness, quenching resistance, heat deformation. Quenching: Preheat 700-750 ° C, then heated to 1000-1050 ° C in still air cooling. Tempering: heated to 150-200 degrees, stay at this temperature, and then cooling in still air. Hardness: more than HRC58 annealing: heating to 800-850 ° C, stay at this temperature for 1-3 hours in the oven to cool gradually. Forged: 1050 ° C-950 ° C Usage: all kinds of cold forming rolls, scissors, shape complexity of the cold tools, plastic molds. Description: Hitachi Metals HITACHI (SKD11) is a common cold die steel wear resistance better have a good quenching and quenching small amount of deformation. Its advantages: (1) vacuum degassing refining, internal quality is extremely clean (2) good machinability (3) good hardenability, air cooling can be hardened, without worrying about the quenching crack (4) heat treatment deformation is very small, quenching deviation is extremely small, the most suitable for the accuracy requirements of the mold (5) extremely excellent wear resistance, good toughness most suitable for use as a stainless steel or high-hard material blanking die (6). types of steel: cold-working die steel Steel properties : wear a good general-purpose tool steel, quenched SKD11 steel SKD11 mold steel SKD11 SKD11, what is the price SKD11 SKD11 SKD11 heat treatment characteristics of the chemical composition of application of cold die steel SKD11 Hitachi