合金钢铸件(JBZQ4297-1986)

合金钢铸件（JB/ZQ4297-1986）合金钢铸件（JB/ZQ4297-1986）(1)牌号和化学成分见表1。(2)力学性能见表2。表1 合金铸钢的牌号和化学成分牌号化学成分(质量分数)(%)CSiMnSPCrNiMoCuZG40MnO.3O.45O.30O.451.201.50O.030 Z040Mn20.35O.45O.20O.401.601.800.030 ZG50Mn20.450.550.20O.401.501.80O.030 ZG20siMn0.0230.601.001.500.0250.300.400.15 ZG35SiMn0.30O.40O.60O.801.101.400.030 ZG35SiMnMOO.320.401.101.401.101.40O.030O.30O.300.20O.300.30ZC35CrMnSi0.30O.40O.50O.750.901.200.0300.50O.80 ZG20MnMO0.170.230.20O.401.101.400.0300.30O.30O.200.35O.30ZG55CrMnMO0.500.60O.250.601.201.600.0300.600.90O.300.200.30O.30ZG40Cr0.350.450.20O.400.50O.80O.030O.801.10 ZG34CrNiMO0.30O.37O.300.600.601.00O.0251.401.701.401.70O.150.35 ZG20CrMO0.170.25O.20O.45O.500.800.030O.500.80 0.40O.60 ZG35CrMOO.30O.370.300.50O.500.80O.0300.801.20 0.200.30 ZG42CrMO0.380.45O.300.60O.601.000.025O.801.20 O.20O.30 ZC50CrMO0.46O.54O.250.50O.50O.80O.030O.901.20 O.15O.25 ZG65MnO.62O.700.17O.37O.901.20O.0300.250.25 表2 合金铸钢的力学性能牌号热处理截面尺寸/mm屈服点s或屈服强度0.2/MPa抗拉强度b/MPa伸长率(%)断面收缩率(%)冲击韧度aKU/(J/?)硬度HBSZG40Mn正火+回火1002956401230 163ZG40Mn2正火+回火调质1003956855908352013554535179269302ZG50Mn2正火+回火1004457851837 ZG20SiMn正火+回火调质l0029530051050065014243039156150190ZG35SiMn正火+回火调质100345415570640121220252427 ZG35SiMnMo正火+回火调质100395490640690121220252427 ZG35CrMnSi正火+回火1003456901430 217ZG20MnMO正火+回火10029549016 39156Zg55CrMnMo正火+回火100不规定 ZG40Cr正火+回火1003456301826 212ZG34CrNiMo调质150150250250400700650650950100C80095080095012121O 240290220270220270ZG20CrMo调质100245460183024 ZC35CrMO调质10051074083012 ZC42CrMo调质3030100100150150250250400540490450400350740830690830690830650800650800121110108 220260200250200250195240195240ZG50CrMo调质10052074088011 220260ZG65Mn正火+回火100不规定 (3)用途见表3。表3 合金铸铁的应用牌号应用举例ZG40Mn用于承受摩擦和冲击的零件，如齿轮等ZG40Mn2用于承受摩擦自皂零件如齿轮等ZG5OMn2用于高强度零件，如齿轮、齿轮缘等ZG20SiMn焊接及流动性良好，作水压机缸、叶片、喷嘴体、阀、弯头等ZG35SiMn用于受摩擦的零件ZG35SiMnMo制造负荷较大的零件ZG35CrMnSi用于承受冲击、受磨损的零件，如齿轮、滚轮等ZG20MnMo用于受压容器如泵壳等ZG55CrMnMo有一定的红硬性，用于锻模等ZG40Cr用于高强度齿轮ZG34CrNiMo用于特别高要求的零件，如锥齿轮、小齿轮、吊车行走轮、轴等ZG20Cr