塑料模具用钢与挤压模具用钢.docx

编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第页共NUMPAGES45页第PAGE\*MERGEFORMAT45页共NUMPAGES\*MERGEFORMAT45页HYPERLINK""冷作模具钢主要用于制造在冷状态（室温）条件下进行压制成形的模具，如冷冲压模具、冷拉伸模具、冷镦模具、冷挤压模具、压印模具、辊压模具等。冷作模具品种多、应用范围广，其产值占模具总产值的30%~40%。采用的钢号很多，一般采用高碳过共析钢和莱氏钢体，如碳素工具钢、低合金油淬冷作模具钢、空淬冷作模具钢、高碳高铬型冷作模具钢、高速钢、低碳高速钢和基本钢及用粉末冶金工艺生产的高合金模具材料等。常用钢号及化学成分见表1-1-1。表1-1-1常用冷作模具钢化学成分w/%钢号CSiMnCrWMoV其他油淬冷作模具钢9Mn2V0.85~0.95≤0.401.70~2.000.10~0.25CrWMn0.90~1.05≤0.400.80~1.100.90~1.201.20~1.609CrWMn0.85~0.95≤0.400.90~1.200.50~0.800.50~0.809SiCr0.85~0.951.20~1.600.30~0.600.95~1.25Cr0.95~1.10≤0.40≤0.401.30~1.70空淬冷作模具钢Cr5Mo1V0.95~1.05≤0.50≤1.004.75~5.500.90~1.400.15~0.50Cr6WV1.00~1.15≤0.40≤0.405.50~7.001.10~1.500.50~0.70Cr4W2MoV1.12~1.250.40~0.70≤0.403.50~4.001.90~2.600.80~1.200.80~1.108Cr2MnWMoVS0.75~0.85≤0.401.30~1.702.30~2.600.70~1.000.50~0.800.10~0.25S0.10高碳冷作模具钢Cr122.00~2.30≤0.40≤0.4011.50~13.00Cr12MoV1.45~1.70≤0.40≤0.4011.00~12.500.40~0.600.15~0.30Cr12Mo1V11.40~1.60≤0.600.6011.00~13.000.70~1.20≤1.10Co≤1.0钢号CSiMnCrWMoV其他基体钢和低碳高速钢6W6Mo5Cr4V0.55~0.65≤0.40≤0.603.70~4.306.00~7.004.50~5.500.70~1.106Cr4W3Mo2VNb0.60~0.70≤0.40≤0.403.80~4.402.50~3.501.80~2.500.80~1.20Nb0.20~0.357W7Cr4MoV0.60~0.70≤0.40≤0.404.50~5.006.50~7.500.20~0.500.40~0.70高韧性高耐磨性冷作模具钢7Cr7Mo2V2Si0.70~0.800.70~1.20≤0.406.50~7.502.00~3.001.70~2.20火焰淬火冷作模具钢7CrSiMnMoV0.65~0.750.85~1.150.65~1.050.90~1.200.30~0.500.15~0.30热作模具钢主要用于制造对高温状态的金属进行热成形的模具。如热锻模具、热挤压模具、压铸模具、热剪切模具等。这类钢含碳量一般为0.3%~0.5%，添加提高高温性能的钨、钼、铬、钒等合金元素，又分为锻造模块用钢、铬钼系热作模具钢、铬钨系热作模具钢、奥氏体型高温热作模具钢等。特殊要求的热作模具有时采用高温合金和难熔合金制造。常用热作模具钢化学成分见表1-1-2。表1-1-2常用热作模具钢化学成分w/%钢号CSiMnCrMoWV其他锻压模块用钢5CrNiMo0.50~0.60≤0.400.50~0.800.50~0.800.15~0.30Ni1.40~1.805CrM