切削用量选择

min进给量mm/r切削速度m/min进给量mm/r切削速度m/min进给量mm/r软钢HB<18035(15~50)0.15(0.1~0.2)50(25~60)0.25(0.15~0.30)60(35~70)0.30(0.2~0.35)65(40~75)0.35(0.20~0.40)碳素钢HB=180~28030(15~40)0.15(0.1~0.2)45(20~55)0.25(0.15~0.30)55(25~65)0.25(0.15~0.30)60(25~70)0.30(0.2~0.35)合金钢HB=280~35030(15~40)0.12(0.1~0.15)40(20~60)0.2(0.1~0.25)50(20~60)0.25(0.15~0.30)55(25~65)0.30(0.2~0.35)不锈钢HB<20015(10~30)0.08(0.05~0.15)20(15~30)0.12(0.05~0.15)25(15~30)0.15(0.1~0.2)25(15~30)0.2(0.1~0.25)高硬度钢HRC=40~6015(10~25)0.05(0.03~0.12)20(15~30)0.12(0.05~0.15)25(15~30)0.15(0.1~0.2)25(15~30)0.2(0.1~0.25)普通铸铁抗拉强度<350N/mm240(15~55)0.2(0.1~0.25)55(25~65)0.30(0.2~0.35)60(30~70)0.35(0.2~0.4)65(35~75)0.4(0.3~0.45)高强度铸铁抗拉强度<450N/mm225(15~40)0.15(0.1~0.2)35(25~45)0.25(0.15~0.3)35(25~45)0.30(0.2~0.35)40(30~50)0.35(0.2~0.4)钻孔采用硬质合金钻头时,其切削用量推荐值如表8,9。