Cr4W2MoV is a new type of alloy steel cold die steel, more stable performance, the life of the mold than the Cr12, Cr12MoV steel has greatly improved. The main features of Cr4W2MoV steel eutectic carbide particles are tiny, evenly distributed, with high hardenability and hardenability, and has good wear resistance and dimensional stability. The steel thermal processing temperature range is narrow, large deformation resistance. The practical use of proven good performance Cr4W2MoV steel cold die steel, used to make all kinds of dies, cold heading die, blanking dies, cold extrusion die and mold setback silk panels. Features: This is for the shortcomings of Cr12 steel steel and developed a generation of steel, has good abrasion resistance and secondary hardening capabilities. The steel eutectic carbide particles small, evenly distributed, with high hardenability and hardenability, and good wear resistance and dimensional stability. But steel thermal processing temperature range is narrow, large deformation resistance. To obtain ≤255HBW hardness, isothermal duration of the steel can not be less than 6 ~ 8h. Hardened Depth: φ150mm × 150mm, can be inside and outside quenching, the hardness of 60HRC, air quenching depth: 40 ~ 50mm. The steel performance is relatively stable, its life than die Cr12, Cr12MoV steel has greatly improved. The steel forging temperature range narrow, easy-to overheating, burning, forging crack. Methods of Cr12 steel can be forged. φ98mm quenched specimens in 980 ℃ air-cooled quenching? after its core hardness reaches 58 ~ 60HRC, surface hardness of 63 -67HRC. Quenching at a temperature of 1020 ° C, the tempering at 400 ° C is preferably toughness; at 500 ~ 520 ° C tempering after 1 to 3 times, better secondary hardenability, toughness decreases, rendering peak flexural strength compressive yield strength steel than Cr12MoV high of about 10%. The deformation hardening steel and Cr12 steel lines similar trends, better scalability. Delivery status: available varieties of hot-rolled sheet, forgings. Hardness ≤269HBW ingredients:. C Si Mn Cr W Mo VPS 1.12 ~ 1.25 0.40 ~ 0.70 ≤0.40 3.50 ~ 4.00 1.90 ~ 2.00 0.80 ~ 1.20 0.80 ~ 1.10 ≤0.030 ≤0.030 heat treatment process: the steel annealing soften more difficult, the general use of isothermal ball annealing. Annealing process: heating temperature of 850 to 870 degrees, heat 4 ~ 6H, isothermal temperature of 760 degrees, heat 6 ~ 8H, furnace cooling to below 600 degrees baked cooled, hardness 229HBW. Quenching temperature of 960 to 980 degrees, oil cooling or air cooling, the hardness of 62HRC; tempering temperature of 280 to 300 degrees, tempering 3 times, each 1H. Tempering hardness 60 ~ 62HRC. High temperature quenching, tempering (1030 degrees quenching, tempering 520 degrees three times) mold steel with high wear resistance and hot hardness. A lower temperature quenching, tempering lower temperature (900 to 980 degrees quenching, tempering 200 to 290 degrees) of the mold has good strength and toughness. Typical application examples: 1) is mainly used for silicon steel blanking die. 2) The steel used to make the material thickness> 3mm complex shapes punching die punch, die, inserts, it is recommended when making punch hardness 58 ~ 62HRC, recommended the production of die hardness 60 ~ 64HRC. 3) for the production of stamping molds requiring high wear resistance, complex shape of the punch, die and inserts, it is recommended when making punch hardness 60 ~ 64HRC, recommended that the production of die hardness 60 ~ 64HRC. 4) for aluminum, copper, steel concave touch of cold extrusion die, die proposal hardness 62 ~ 64HRC. 5) for the production of dies, cold heading die, blanking die, drawing die, cold extrusion concave touch and rub silk panels. 6) is a large-scale production batches or Die quantities of basic steel. 7) the use of die steel refrigeration upsetting deformation normalizing + + isothermal ball annealing temperature quenching, tempering + sulfur, carbon, nitrogen triple penetration composite toughening deal with new technology, can improve the mold base on the basis of strength and toughness, improve the mold cavity surface layer hardness and wear resistance, effectively improve the life of the mold. 8) Cr4W2MoV steel punch uses 1020 ° C heat, 260 ° c × 1h Austempering, 220 ° C × 1h × 2 times tempering hardness of 58 -59HRC. The average life of the mold 898. 9) leaf spring punching punch original use Cr12MoV indium, die life is 265, and use Cr4W2MoV steel, punch life of 491, such as a steel punch Cr4W2MoV were 920 ℃ × 4h bath vanadizing use life of up to 845. The following Main: structural steel: Q195, Q215, Q235-A, B, C, D, 05F, 08F, 10F, 15F, 10 # steel, 15 #, 20 #, 25 #, 30 #, 35 #, 40 # , 50 #, 55 #, 60 #, 65 #, 70 #, 75 #, 80 #, 85 #, etc., tool steel: Cr12 CR12MOV 4CR13 3CR17MO 718,718H, S136, S136H, 8407, DF-2 H13, P20, etc. ... 20Cr, 30Cr, 35Cr, 40Cr, 45Cr, 50Cr, 38CrSi, 12CrMO, 15CRMO, 20CRMO, 30CRMO, 30CRMOA, 35CRMO, 42CRMO, 12CRMOV, 35CRMOV, 12CR1MOV, 25CR2MOVA, 25CR2MO1VA, 38CRMOAL, 40CRV, 50CRVA, 15CRMN, 20CRMN, 40CRMN , 20CRMNSI, 25CRMNSI, 30CRMNSI, 30CRMNSIA, 35CRMN Sweden (Assab) K100, DF-2, XW-10, XW-5, XW-41,618,618H, 718,718H, S136, S136H, 8402,8407, 8416, QRO-90, HSP-41, ASP23, ASP30, ASP60, VANADIS-4, VANADIS-10, HOTVAR, 168S, 635, ASSAB88, ELMAX, XW-42, V-4, S-7, EM2, VANCRON 40 , RAMAX2, POLMAX, UNIMAX, NIMAX, MM40, MMXL, ELMXX, DIEVAR, Germany (Sa Site) P20,2311,2738,2316,2083,2767,4125,2344,2367, 2379,2842,2363,2436,2510 , 3343,3207, TSP4,6582,7225,1293,1285, YE2311, YE2738, YE2083, YE2316, YE2344,1.8519,1.8550,1.3243,1.3247,1.2101,1.1545,1.2080,1.2312,1.2734,1.2840,1.2842,1.2885,1.2601 , 1.2606,1.2714,1.1210,1.7147,1.6523,1.6582,1.5919,1.5752 SIA, 20CRMNMO, 40CRMNMO, 20CRMNTI, 30CRMNTI, 20CRNI, 40CRNI, 45CRNI, 50CRNI, 12CRNI2,12CRNI3,20CRNI3,30CrNi3,37CrNi3,12Cr2Ni4,20CR2NI4,20CRNIMO, 40CRNIMOA, 18CRNIMNMOA, 45CRNIMOVA, 18CR2NI4WA, 25CR2NI4WA, 45H, 15CrH, 20CrH, 40CrH, 45CrH, 16CrMnH, 20CrMnH, 1CrMnBH, 17CrMnBH, 40MNBH, 45MNBH, 20MNVBH, 20MNTIBH, 15CRMOH, copper: T1 TU2 TP2 H90 H96 H85 H80 H70 H68 H65 H63 H60 H62 HPb63-3 HPb63-0.1 HPb60-2 HPb59-2 HPb59-1 HPb58-2.5 C3604 CuZn39pb3 CuZn39pb2 C2680 C1020 C1100 other copper. Titanium: TC4 TC3 TC2 TC1 TC6 TC5 TA1 TA2 TA3 TA4 TA5 TA6 TA7 TA8 other titanium. Stainless steel: 410 410S 410L 415 416 410J1 420J2 420F 420 403 431 440A 440B 440C 440F 630 631 632 633 660201 201 202 204 301 301L 301LN 302 302B 303 303Se 304 304L 304H 304N 304LN 304N1 304N2 305 308 309 309S 310 310S 316 316L 316H 316Ti 316Nb 316N 316J1 316J1L 904L 317 317L 317J1 317LN 321 321H 330 347 347 347H XM15J1 329J1 405 430 430F 429 434 444 446 436 439 447J1 403 409L2205 2304 225 2507 and other stainless steel. Cutting steel Y15 Y15PB Y12 Y12PB Y20 Y30 12L13 1213 12L14 1117 1132 Y08, Y12, Y15, Y20, Y30, Y35, Y45, Y08MNS, Y15MN, Y35MN, Y40MN, Y45MN, Y45MNS, Y08PBV, Y12PB, Y15PB, Y45MNSPB, Y08SN, Y15SN, Y45SN, Y45MNSN, Y45CA etc ... spring steel 65Mn 70Mn 60Si2MnA 50CrVA other excellent steel.