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1、用力矩扳手正规测定拧紧力矩螺栓规格dmm螺距Pmm计算拧紧力矩TNmssMPa螺栓公称应力截面积Asmm2外螺纹小径d1mm外螺纹中径d2mm螺纹原始三角形高度Hmm计算直径d3mm0.8*TNm0.6*TMm182.5332.59800192.15.16.2.14.266.07199.56螺纹规格螺距螺纹联接件常用材料及机械性能通常取计算值的0.8倍左右作为实际应用的拧紧力矩值.M60.81,0.75,(0.5)钢号sbMPassMPaM81.25,1,0.75,(0.5)10335~400205M101.5,1.25,1,0.75,(0.5)
2、 Q235-A375~460235M121.75,1.5,1.25,1,(0.75),(0.5) 35530315M142,1.5,(1.25),1,(0.75),(0.5) 45600355M162,1.5,1,(0.75),(0.5) 40Cr980785M182.5,2,1.5,1,(0.75),(0.5) M202.5,2,1.5,1,(0.75),(0.5) M243,2,1.5,1,(0.75) 螺纹联接件对应强度等级的机械性能M273,2,1.5,1,(0.75) 等级sbMPassMPaM303.5,(
3、3),2,1.5,1,(0.75) 3.6300180M333.5,(3),2,1.5,(1),(0.75) 4.8400320M364,3,2,1.5,(1) 5.6500500?M394,3,2,1.5,(1) 6.8600480M424.5,(4),3,2,1.5,(1) 8.8800640M485,(4),3,2,1.5,(1) 9.8900720M525,(4),3,2,1.5,(1) 10.91040900M565.5,4,3,2,1.5,(1) 12.912001080M60(5.5),4,3,2,1.
4、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)