用力矩扳手正规测定拧紧力矩.xls

用用力力矩矩扳扳手手正正规规测测定定拧拧紧紧力力矩矩 螺栓规格 d mm 螺距 P mm 计算拧紧力矩 T Nm ss MPa 螺栓公称应力截 面积As mm2 外螺纹小径 d1 mm 外螺纹中径 d2 mm 螺纹原始三 角形高度H mm 303.51291.59640560.587185426.2111388627.726683313.031089 螺纹规格螺距螺纹联接件常用材料及机械性能 M81.25, 1,0.75,0.5钢号sb MPass MPa M101.5, 1.25,1,0.75,0.510335400205 M121.75, 1.5,1.25,1,0.75,0.5Q235-A375460235 M142, 1.5,1.25,1,0.75,0.535530315 M162, 1.5,1,0.75,0.545600355 M182.5, 2,1.5,1,0.75,0.540Cr980785 M202.5, 2,1.5,1,0.75,0.5 M243, 2,1.5,1,0.75 M273, 2,1.5,1,0.75螺纹联接件对应强度等级的机械性能 M303.5, 3,2,1.5,1,0.75等级sb MPass MPa M333.5, 3,2,1.5,1,0.753.6300180 M364, 3,2,1.5,14.8400320 M394, 3,2,1.5,15.6500300 M424.5, 4,3,2,1.5,18.8800640 M485, 4,3,2,1.5,110.91040900 M525, 4,3,2,1.5,1 M565.5, 4,3,2,1.5,1 M605.5, 4,3,2,1.5,1 M646, 4,3,2,1.5,1 M686, 4,3,2,1.5,1 M726, 4,3,2,1.5,1 M766, 4,3,2,1.5,1 M806, 4,3,2,1.5,1 计算直径 d3 mm 0.8*T Nm 0.6*T Mm 25.7059574 1033.27774.96 通常取计算值的0.8倍左 右作为实际应用的拧紧 力矩值.