Ming Yuan Metal Products Co., Ltd. supply high-quality imported mold steel round bars SKD11 mold steel SKD11 SKD11 mold steel prices 
 To SKD11 Mould Steel 

 Name: mold steel 

 Grade: SKD11. 

 Standard: JIS G4404: 2000 

 Materials and Heat Treatment Hardness: HRC58-60SKD11 - kinds of high-carbon high-chromium alloy tool steel, high hardness grinding after heat treatment, and hardenability, dimensional stability, good features, and appropriate system of high-precision long life cold for mold and thermosetting molding plastic mold. 

 SKD11 mold steel characteristics: has a good self-willed and anti-fatigue properties of high temperature and can withstand the temperature of fusion, suitable for long-term high temperature work well cutting and polishing performance 

 SKD11 mold steel use: 

 Thickness less than 6mm sheet, efficient blanking die. Contained red mold and pressure die scissors inlaid blade, woodworking blade thread rolling die and wear slider Cold Heading Die, thermosetting resin molding, high-level gauges such as deep drawing and forming, cold extrusion dies. 

 SKD11 mold steel use (for reference only) 

 1 state quenching and tempering 

 Quenching + cold treatment and tempering the state to use (suitable for high precision and dimensional stability requirements) 

 3, the quenching and tempering + nitrogen treatment state (suitable for high surface hardness requirements) 

 4 cryogenic processing for the highest hardness and dimensional stability, mold immediately after quenching Cryogenic -70 to -80 ° C for 3-4 hours, then come back to the fire treatment, deep cryogenic treatment of tool or mold hardness than conventional heat treatment high hardness 1-3HRC. Large parts of complex shape and size changes, cryogenic treatment and the danger of cracking. 

 5 after nitrogen treatment die or workpiece nitrogen treatment, the surface layer with high hardness and the hardening of certain corrosion resistance organization. 

 Nitriding processing at 525 ℃, the surface hardness of about 1250HV, nitridation time on the permeation layer affects the following table. Nitridation time (hours) 203 060 nitrided case depth (mm) 0.25 0.30 0.35 

 7 at 570 ° C soft nitriding treatment, the workpiece surface hardness of about 950HV. Usually soft nitriding for 2 h, the depth of hardened layer can reach 10-20um. Grinding die blanks, or state in the low-temperature tempering, grinding prone to grinding cracks. Should be taken to prevent the cracks occurred in the small grinding feed repeatedly grinding, while the auxiliary plus a water-cooled conditions. 

 Line cutting the processing of complex shape or the size of the mold, the final trip to the use of wire cutting, usually encountered in the occurrence of cracking phenomenon. 

 To prevent cracking, it is recommended that the gas quenching and tempering at high temperatures in order to reduce heat stress, or cavity pre-processing of the embryos die. 

 SKD11 mold steel chemical composition (%): 

 C, 1.40-1.60 

 Si 0.40 

 Mn 0.50 

 Cr 11.00-13.00 

 Mo 0.80-1.20 

 V-0.30 
 Ming Yuan Metal Products Co., Ltd. supply high-quality imported mold steel round bars SKD11 mold steel SKD11 SKD11 mold steel prices