螺栓的锁紧力矩研究和计算方法.docx

1、螺栓的锁紧力矩研究和计算方法内六角外六角螺栓直径DIN267性能等级(螺栓强度等级)螺 栓螺 栓3.65.66.98.810.912.9S(mm)S(mm)M(mm)Fv(N)Ma（Nm）Fv(N)Ma（Nm）Fv(N)Ma（Nm）Fv(N)Ma（Nm）Fv(N)Ma（Nm）Fv(N)Ma（Nm）1.54M22550.13450.157100.38350.351,1700.51,4150.625M2.54850.266550.351,3100.711,5500.832,1801.182,6201.42.255.5M36300.371,0500.621,7000.992,2501.33,1501

2、.93,8002.26M3.58500.571,4000.952,2501.53,00024,2502.95,1003.437M41,1000.851,8501.42,9002.33,90035,7504.46,7005.148、9M51,8001.73,0002.84,8004.56,4005.99,4008.711,00010510M62,5502.94,2004.86,7507.79,0001013,2001515,50018613、14M84,65077,7501212,4001916,5002524,3003628,40043815、17M107,4001412,3002319,70

3、03726,3004938,7007245,200841019、21M1210,8002418,0004028,8006538,4008556,50012566,0001451222、23M1414,8003924,7006439,50010552,50013577,50020090,5002351424、26M1620,4005934,0009854,50015572,500210107,000310125,00036527M1824,8008141,30013566,00021591,000300129,000430152,0005001730M2031,90011553,00019085

4、,000305117,000425166,000610195,00071032M2239,90015566,500260106,000415146,000580208,000820244,0009601936M2445,90020076,500330122,000530168,000730240,0001,050281,0001,22041M2780,500295100,000490161,000780222,0001,100316,0001,550369,0001,8002246M3073,500395122,000660196,0001,050269,0001,450384,0002,10

5、0449,0002,45050M3391,500540153,000900244,0001,450326,0001,900458,0002,700550,0003,2502755M36107,000690179,0001,150287,0001,850382,0002,450537,0003,450645,0004,15060M39129,000900215,0001,500345,0002,400460,0003,200646,0004,500775,0005,4003265M42148,0001,100247,0001,850395,0002,950526,0003,950740,0005

6、,550888,0006,65070M45173,0001,400289,0002,300462,0003,700616,0004,950867,0006,9501,050,0008,3503675M48195,0001,700325,0002,800520,0004,450693,0005,950974,0008,4001,150,000,10,10080M52234,0002,150390,0003,600624,0005,750832,0007,6501,169,00010,8001,403,00012,9004185M56270,0002,700450,0004,500719,0007

7、,150959,0009,5501,349,00013,4001,618,00016,10090M60315,0003,350525,0005,550841,0008,9001,121,00011,9001,576,00016,7001,892,00020,0004695M64357,0004,000595,0006,700951,00010,7001,268,00014,3001,784,00021,1002,140,00024,100S-内六角或外六方两平行边距离Fv-螺栓预紧力Ma-螺栓扭矩返回上层手握扳手拧紧螺丝，手到螺丝的距离X所用的力就是锁紧力矩。ASME标准接口螺纹G1表示是1英

8、寸的管螺纹，表示螺纹的内孔通径的公称尺寸是1英寸（25.4毫米）两个点是英寸的代号。管螺纹是位于管壁上用于连接的螺纹,有55度非密封管螺纹和55度密封管螺纹。 主要用来进行管道的连接，使其内外螺纹的配合紧密，有直管和锥管两种。常见的管螺纹主要包括以下几种：NPT、PT、G等。 1）NPT是National(American)Pipe Thread的缩写，属于美国标准的60度椎管螺纹，用于北美地区，国标查阅GB/T12716-1991。 2）PT（BSPT）是Pipe Thread 的缩写，是55度密封圆锥管螺纹，属于惠氏螺纹家族，多用于欧洲及英联邦国家，常用于水及煤气管行业，锥度1:16，国标

9、查阅GB/T7306-2000。国内叫法为ZG.。 3）G是55度非密封管螺纹，属惠氏螺纹家族。标记为G代表圆柱螺纹。国标查阅GB/T7307-2001。UNF是United Fine Thread，即英制细牙螺纹。UNC：统一粗牙螺纹螺纹联接的拧紧力矩计算MtKP0d103 N.mK:拧紧力系数 d：螺纹公称直径 P0：预紧力 P00As As也可由下面表查出Asds2/4 ds:螺纹部分危险剖面的计算直径ds（d2d3）/2 d3= d1H/6 H：螺纹牙的公称工作高度0 （0.50.7）s s螺栓材料的屈服极限N/mm2 （与强度等级相关，材质决定）K值查表：(K值计算公式略)摩擦表面状

10、况K值有润滑无润滑精加工表面0.100.12一般加工表面0.130.150.180.21表面氧化0.200.24镀 锌0.180.22干燥的粗加工表面0.260.3s查表：螺纹性能等级3.64.64.85.65.86.88.89.810.912.9s 或0.2N/mm21802403203004004806407209001080As查表：螺纹公称直径d/mm33.545678101214161820222427303336公称应力截面积As/mm25.036.788.7814.220.128.936.65884.3115157192245303353459561694817通过计算得到螺栓联

11、接拧紧力矩如下表所示：钢结构连接用螺栓性能等级分3.6、4.6、4.8、5.6、6.8、8.8、9.8、10.9、12.9等10余个等级，其中8.8级及以上螺栓材质为低碳合金钢或中碳钢并经热处理（淬火、回火），通称为高强度螺栓，其余通称为普通螺栓。螺栓性能等级标号有两部分数字组成，分别表示螺栓材料的公称抗拉强度值和屈强比值。例如，性能等级4.6级的螺栓，其含义是：1、螺栓材质公称抗拉强度达400MPa级；2、螺栓材质的屈强比值为0.6；3、螺栓材质的公称屈服强度达4000.6=240MPa级性能等级10.9级高强度螺栓，其材料经过热处理后，能达到1、螺栓材质公称抗拉强度达1000MPa级；2、

12、螺栓材质的屈强比值为0.9；3、螺栓材质的公称屈服强度达10000.9=900MPa级螺栓性能等级的含义是国际通用的标准，相同性能等级的螺栓，不管其材料和产地的区别，其性能是相同的，设计上只选用性能等级即可表面被氧化（无润滑）的螺纹联接的拧紧力矩值（单位：N.m）性能等级3.64.64.85.65.86.88.89.810.912.9螺纹直径d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.330.460.430.610.580.810.540.760.721.010.871.221.161.621.301.8

13、31.632.281.962.743.50.510.720.680.960.911.280.851.201.141.591.371.911.822.552.052.872.563.593.084.3140.761.061.011.421.351.891.261.771.692.362.022.832.703.783.034.253.795.314.556.3751.532.152.042.862.733.822.563.583.414.774.095.735.457.636.138.597.6710.749.2012.8862.603.653.474.864.636.484.346.085.7

14、98.106.959.739.2612.9710.4214.5913.0218.2315.6321.8874.376.125.838.167.7710.887.2810.209.7113.5911.6516.3115.5421.7517.4824.4721.8530.5926.2236.7186.328.858.4311.8111.2415.7410.5414.7614.0519.6816.8723.6122.4931.4825.3035.4231.6244.2737.9553.131012.5317.5416.7023.3922.2731.1820.8829.2327.8438.9833.4

15、146.7744.5462.3650.1170.1662.6487.7075.17105.241221.8530.5929.1340.7938.8554.3836.4250.9848.5667.9858.2781.5877.69108.7787.40122.36109.25152.95131.10183.541434.7848.6946.3764.9261.8286.5557.9681.1477.28108.1992.74129.83123.65173.11139.10194.75173.88243.43208.66292.121654.2675.9672.35101.2896.46135.0

16、590.43126.60120.58168.81144.69202.57192.92270.09217.04303.85271.30379.81325.56455.781874.65104.5199.53139.35132.71185.79124.42174.18165.89232.24199.07278.69265.42371.59298.60418.04373.25522.55447.90627.0620105.84148.18141.12197.57188.16263.42176.40246.96235.20329.28282.24395.14376.32526.85423.36592.

17、70529.20740.88635.04889.0622143.99201.58191.98268.77255.97358.36239.98335.97319.97447.96383.96537.55511.95716.73575.94806.32719.931007.90863.911209.4824183.00256.19243.99341.59325.32455.45304.99426.99406.66569.32487.99683.18650.65910.91731.981024.77914.981280.971097.971537.1627267.69374.76356.92499.

18、69475.89666.25446.15624.61594.86832.81713.84999.37951.781332.501070.761499.061338.441873.821606.132248.5930363.53508.94484.70678.59646.27904.78605.88848.23807.841130.98969.411357.171292.541809.561454.112035.761817.642544.702181.173053.6433494.68692.56659.58923.41879.441231.21824.471154.261099.301539

19、.011319.161846.821758.872462.421978.732770.232473.423462.782968.104155.3436635.30889.42847.071185.891129.421581.191058.831482.361411.781976.491694.132371.782258.843162.382541.203557.683176.504447.093811.805336.51表面被氧化（有润滑）的螺纹联接的拧紧力矩值（单位：N.m）性能等级3.64.64.85.65.86.88.89.810.912.9螺纹直径d/mmminmaxminmaxmin

20、maxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.270.380.360.510.480.680.450.630.600.850.721.010.971.351.091.521.361.901.632.283.50.430.600.570.800.761.060.711.000.951.331.141.591.522.131.712.392.142.992.563.5940.630.890.841.181.121.571.051.481.401.971.692.362.253.152.533.543.164.433.795.3151.281.791

21、.702.392.273.182.132.982.843.983.414.774.546.365.117.166.398.957.6710.7462.173.042.894.053.865.403.625.074.826.755.798.107.7210.818.6812.1610.8515.2013.0218.2373.645.104.866.806.479.066.078.508.0911.339.7113.5912.9518.1314.5720.3918.2125.4921.8530.5985.277.387.039.849.3713.128.7812.3011.7116.4014.05

22、19.6818.7426.2321.0829.5126.3536.8931.6244.271010.4414.6213.9219.4918.5625.9817.4024.3623.2032.4827.8438.9837.1251.9741.7658.4652.2073.0862.6487.701218.2125.4924.2833.9932.3745.3230.3542.4940.4656.6548.5667.9864.7490.6472.84101.9791.04127.46109.25152.951428.9840.5738.6454.1051.5272.1348.3067.6264.40

23、90.1677.28108.19103.04144.26115.92162.29144.90202.86173.88243.431645.2263.3060.2984.4080.38112.5475.36105.50100.48140.67120.58168.81160.77225.08180.86253.21226.08316.51271.30379.811862.2187.0982.94116.12110.59154.83103.68145.15138.24193.54165.89232.24221.18309.66248.83348.36311.04435.46373.25522.552088.20123.48117.60164.64156.80219.52147.00205.80196.00274.40235.20329.28313.60439.04352.80493.92441.00617.40529.20740.8822119.99167.98159.98223.98213.31298.64199.98279.97266.64373.30319.97447.96426.62597.27479.95671.93