1、合金鋼鑄件（JB/ZQ4297-1986）合金鋼鑄件（JB/ZQ4297-1986）(1)牌號和化學成分見表1。(2)力學性能見表2。表1 合金鑄鋼的牌號和化學成分牌號化學成分(質量分數)(%)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.801.101.400.03

2、0 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

3、.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

4、 表2 合金鑄鋼的力學性能牌號熱處理截面尺寸/mm屈服點ós或屈服強度ó0.2/MPa抗拉強度ób/MPa伸長率(%)斷面收縮率(%)沖擊韌度aKU/(J/?)硬度HBSZG40Mn正火+回火1002956401230 163ZG40Mn2正火+回火調質1003956855908352013554535179269302ZG50Mn2正火+回火1004457851837 ZG20SiMn正火+回火調質l0029530051050065014243039156150190ZG35SiMn正火+回火調質100345415570640121220252427 ZG35S

5、iMnMo正火+回火調質100395490640690121220252427 ZG35CrMnSi正火+回火1003456901430 217ZG20MnMO正火+回火10029549016 39156Zg55CrMnMo正火+回火100不規定 ZG40Cr正火+回火1003456301826 212ZG34CrNiMo調質<150150250250400700650650950100C80095080095012121O 240290220270220270ZG20CrMo調質100245460183024 ZC35CrMO調質10051074083012 ZC42CrMo調質303

6、0100100150150250250400540490450400350740830690830690830650800650800121110108 220260200250200250195240195240ZG50CrMo調質10052074088011 220260ZG65Mn正火+回火100不規定 (3)用途見表3。表3 合金鑄鐵的應用牌號應用舉例ZG40Mn用于承受摩擦和沖擊的零件，如齒輪等ZG40Mn2用于承受摩擦自皂零件如齒輪等ZG5OMn2用于高強度零件，如齒輪、齒輪緣等ZG20SiMn焊接及流動性良好，作水壓機缸、葉片、噴嘴體、閥、彎頭等ZG35SiMn用于受摩擦的零件ZG35SiMnMo制造負荷較大的零件ZG35CrMnSi用于承受沖擊、受磨損的零件，如齒輪、滾輪等ZG20MnMo用于受壓容器如泵殼等ZG55CrMnMo有一定的紅硬性，用于鍛模等ZG40Cr用于高強度齒輪ZG34CrNiMo用于特別高要求的零件，如錐齒輪、小齒輪、吊車行走輪、軸等ZG20C