Round specifications of imports of round steel SKD11 SKD11 SKD11 round custom

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Round specifications of imports of round steel SKD11 SKD11 SKD11 round custom

Information Name:	Round specifications of imports of round steel SKD11 SKD11 SKD11 round custom
Published:	2013-04-16
Validity:	365
Specifications:	Bar diameter 10-350 sheet 13 * 32-610-75 * 32-610
Quantity:	555620.00
Price Description:
Detailed Product Description：	SKD11 tool steel [About how to choose the right mold steel Use mold steel to meet the working conditions, working conditions of the process performance requirements and economic requirements requirements: abrasion, plastic deformation of the dough in the mold cavity substantially in the selection, along The cavity surface of the flow and slide, so that the mold cavity surface with the blank to produce intense friction, 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. the what material SKD11 kilograms of how much the market price quotes skd11? the SKD11 heat treatment method where the retail the SKD11 import material SKD11 domestic Fushun material SKD11 Shanghai factory in what position to buy quality and reliable materials find the Shanghai Hai Billiton integrity service allows you to buy more at ease [How to choose the right material Haituo 24 hours online to help you answer 】 Material Name: mold steel (haituojs) Material Grade: SKD11 material standard: JIS G4404: 2000 Materials and Heat Treatment Hardness: HRC58-60 SKD11 - high-carbon high-chromium alloy tool steel with high hardness wear resistance after heat treatment, and hardenability, good dimensional stability, suitable for making high precision and long life cold work die and of thermoset molding plastic mold. SKD11 characteristics: good toughness and resistance to high temperature fatigue properties can withstand temperature fusion, suitable for long-term work at high temperatures with good cutting and polishing performance SKD11 introduced (haituojs) is not greater than the thickness of 6mm sheet, efficient blanking die. Red contain mold and the pressure die scissors, inlaid blade, woodworking blade thread rolling die and wear slider cold heading die, thermosetting resin molding, senior gauge deep drawing forming, cold extrusion dies. The SKD11 use (for reference only) (haituojs). "Quenching and tempering" state quenching and cold treatment and tempering state (suitable for high precision and dimensional stability requirements) 3. "Quenching + tempering + nitriding treatment state (suitable for a high surface hardness requirements) cryogenic processing in order to obtain the highest hardness and dimensional stability, the mold immediately after quenching cryogenic -70 to -80 ° C and maintained for 3-4 hours , and then to return fire processing, cryogenic treatment tool or mold hardness than conventional heat treatment hardness 1-3HRC. The complex shape and size changes in the larger parts, cryogenic treatment the risk of cracking. 5. The nitriding treatment die or workpiece nitride treatment, the surface layer with high hardness and a certain corrosion resistance of hardened tissue. 6 at 525 ° C nitriding treatment, the surface hardness of about 1250HV, nitriding time of impact on the diffusion layer shown in the following table. Nitride time (hours) 203 060 nitriding depth (mm) 0.25 0.30 0.35 7 the 570 ℃ Tufftride, workpiece surface hardness of about 950HV. Usually soft nitriding treatment 2 hours, the depth of the hardened layer can be up to 10-20um the grinding die blanks or work in the low-temperature tempered condition, grinding, grinding crack prone. To prevent the occurrence of cracks should be taken to a small grinding feed rate repeatedly grinding, auxiliary good water conditions. Wire cutting complex shape or the size of the mold, to finally take line cutting is typically encountered when cracking occurred. To prevent cracking, it is recommended that the use of gas quenching and tempering at high temperatures, heat treatment to reduce stress, or embryos die cavity pre-processing. SKD11 chemical composition (haituojs)% C carbon silicon 1.40-1.60 Si 0.40 Mn Mn 0.50 Cr chromium 11.00-13.00 Mo molybdenum vanadium 0.80-1.20 V 0.30 P sulfur

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