螺栓的鎖緊力矩研究和計算方法

1、角 栓 )外六角 螺栓 S(mm)螺栓直徑M(mm)DIN267 性能等級 ( 螺栓強度等級 )3.65.66.98.810.912.9Fv(N)Ma(Nm)Fv(N)Ma( Nm)Fv(N)Ma( Nm)Fv(N)Ma( Nm)Fv(N)Ma( Nm)Fv(N)M4M22550.13450.157100.38350.351,1700.51,4155M2.54850.266550.351,3100.711,5500.832,1801.182,6205.5M36300.371,0500.621,7000.992,2501.33,1501.93,8006M3.58500.571,4000.952,

2、2501.53,00024,2502.95,1007M41,1000.851,8501.42,9002.33,90035,7504.46,7008、9M51,8001.73,0002.84,8004.56,4005.99,4008.711,00010M62,5502.94,2004.86,7507.79,0001013,2001515,50013、14M84,65077,7501212,4001916,5002524,3003628,40015、17M107,4001412,3002319,7003726,3004938,7007245,20019、21M1210,8002418,000402

3、8,8006538,4008556,50012566,00022、23M1414,8003924,7006439,50010552,50013577,50020090,50024、26M1620,4005934,0009854,50015572,500210107,000310125,00027M1824,8008141,30013566,00021591,000300129,000430152,00030M2031,90011553,00019085,000305117,000425166,000610195,00032M2239,90015566,500260106,000415146,0

4、00580208,000820244,00036M2445,90020076,500330122,000530168,000730240,0001,050281,00041M2780,500295100,000490161,000780222,0001,100316,0001,550369,00046M3073,500395122,000660196,0001,050269,0001,450384,0002,100449,00050M3391,500540153,000900244,0001,450326,0001,900458,0002,700550,00055M36107,00069017

5、9,0001,150287,0001,850382,0002,450537,0003,450645,00060M39129,000900215,0001,500345,0002,400460,0003,200646,0004,500775,00065M42148,0001,100247,0001,850395,0002,950526,0003,950740,0005,550888,00070M45173,0001,400289,0002,300462,0003,700616,0004,950867,0006,9501,050,00075M48195,0001,700325,0002,80052

6、0,0004,450693,0005,950974,0008,4001,150,000,80M52234,0002,150390,0003,600624,0005,750832,0007,6501,169,00010,8001,403,00085M56270,0002,700450,0004,500719,0007,150959,0009,5501,349,00013,4001,618,00090M60315,0003,350525,0005,550841,0008,9001,121,00011,9001,576,00016,7001,892,00095M64357,0004,000595,0

7、006,700951,00010,7001,268,00014,3001,784,00021,1002,140,000六角或外六方兩平行邊距離Fv- 螺栓預緊力Ma-螺栓扭矩返回上層手握扳手擰緊螺絲，手到螺絲的距離 X 所用的力就是鎖緊力矩ASME 標準接口螺紋 G1表示是 1 英寸的管螺紋，表示螺紋的內孔通徑的公稱尺寸是 1 英寸(25.4 毫米)兩個點是英寸的代號 。管螺紋是位于管壁上用于連接的螺紋 ,有 55 度非密封管螺紋和 55 度密封管螺紋。 主要用來進行管道的連接，使其內外螺紋的配合緊密，有直管和錐管兩種。 常見的管螺紋主要包括以下幾種：NPT、 PT、 G等。1) NPT是 N

8、ational(American)Pipe Thread的縮寫，屬于 美國標準 的 60 度椎管螺紋，用于北美地區(qū)，國標查閱 GB/T12716-1991 。2) PT(BSPT)是 Pipe Thread 的縮寫，是 55 度密封圓錐管螺紋，屬于惠氏螺紋 家族，多用于 歐洲 及英聯(lián)邦國家，常用于水及煤氣管行業(yè)，錐度 1:16 ，國標查閱 GB/T7306-2000 。國內叫法為 ZG. 。3）G 是 55 度非密封管螺紋，屬惠氏螺紋家族。標記為G 代表圓柱螺紋。國標查閱GB/T7307-2001 。UNF 是 United Fine Thread ，即英制細牙螺紋。UNC：統(tǒng)一粗牙螺紋螺紋聯(lián)

9、接的擰緊力矩計算M tKP0d10 3 N.mK: 擰緊力系數(shù)d：螺紋公稱直徑P0：預緊力P00AsA s也可由下面表查出A s ds2/4ds:螺紋部分危險剖面的計算直徑ds（ d2 d3） /2 d3= d 1 H/6 H：螺紋牙的公稱工作高度0 （ 0.50.7） s s螺栓材料的屈服極限 N/mm 2 （與強度等級相關，材質決定）K 值查表： （K 值計算公式略 ）摩擦表面狀況K值有潤滑無潤滑精加工表面0.100.12一般加工表面0.130.150.180.21表面氧化0.200.24鍍鋅0.180.22干燥的粗加工表面0.260.3s 查表：螺紋性能等級3.64.64.85.65.8

10、6.88.89.810.912.9 s 或 0.2N/mm21802403203004004806407209001080As 查表：螺紋公稱直徑 d/mm33.545678101214161820222427303336公稱應力截面積 As/mm25.036.788.7814.220.128.936.65884.3115157192245303353459561694817通過計算得到螺栓聯(lián)接擰緊力矩如下表所示：鋼結構連接用螺栓性能等級分3.6 、4.6 、4.8 、5.6 、6.8 、 8.8 、9.8 、10.9 、12.9 等 10 余個等級，其中 8.8級及以上螺栓材質為低碳合金鋼或

11、中碳鋼并經(jīng)熱處理 淬火、 回火），通稱為高強度螺栓， 其余通稱為普通螺栓4.6螺栓性能等級標號有兩部分數(shù)字組成，分別表示螺栓材料的公稱抗拉強度值和屈強比值。例如，性能等級 級的螺栓，其含義是：1 、螺栓材質公稱抗拉強度達 400MPa 級；2 、螺栓材質的屈強比值為 0.6 ；3 、螺栓材質的公稱屈服強度達 400 0.6=240MPa 級性能等級 10.9 級高強度螺栓，其材料經(jīng)過熱處理后，能達到1 、螺栓材質公稱抗拉強度達 1000MPa 級；2 、螺栓材質的屈強比值為 0.9 ；3 、螺栓材質的公稱屈服強度達 1000 0.9=900MPa 級螺栓性能等級的含義是國際通用的標準，相同性能

12、等級的螺栓，不管其材料和產(chǎn)地的區(qū)別，其性能是相同的，設計上只選用性能等級即可表面被氧化（無潤滑）的螺紋聯(lián)接的擰緊力矩值（單位：N.m ）性能 等級3.64.64.85.65.86.88.89.810.912.9螺紋 直徑 d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.330.460.430.610.580.810.540.760.721.010.871.221.161.621.301.831.632.281.962.743.50.510.720.680.960.911.280.851.201.141.591

13、.371.911.822.552.052.872.563.593.084.3140.761.061.011.421.351.891.261.771.692.362.022.832.703.783.034.253.795.314.556.3751.532.152.042.862.733.822.563.583.414.774.095.735.457.636.138.597.6710.749.2012.8862.603.653.474.864.636.484.346.085.798.106.959.739.2612.9710.4214.5913.0218.2315.6321.8874.376.12

14、5.838.167.7710.887.2810.209.7113.5911.6516.3115.5421.7517.4824.4721.8530.5926.2236.7186.328.858.4311.8111.2415.7410.5414.7614.0519.6816.8723.6122.4931.4825.3035.4231.6244.2737.9553.131012.5317.5416.7023.3922.2731.1820.8829.2327.8438.9833.4146.7744.5462.3650.1170.1662.6487.7075.17105.241221.8530.5929

15、.1340.7938.8554.3836.4250.9848.5667.9858.2781.5877.69108.7787.40122.36109.25152.95131.10183.541434.7848.6946.3764.9261.8286.5557.9681.1477.28108.1992.74129.83123.65173.11139.10194.75173.88243.43208.66292.121654.2675.9672.35101.2896.46135.0590.43126.60120.58168.81144.69202.57192.92270.09217.04303.852

16、71.30379.81325.56455.781874.65104.5199.53139.35132.71185.79124.42174.18165.89232.24199.07278.69265.42371.59298.60418.04373.25522.55447.90627.0620105.84148.18141.12197.57188.16263.42176.40246.96235.20329.28282.24395.14376.32526.85423.36592.70529.20740.88635.04889.0622143.99201.58191.98268.77255.97358

17、.36239.98335.97319.97447.96383.96537.55511.95716.73575.94806.32719.931007.90863.911209.4824183.00256.19243.99341.59325.32455.45304.99426.99406.66569.32487.99683.18650.65910.91731.981024.77914.981280.971097.971537.1627267.69374.76356.92499.69475.89666.25446.15624.61594.86832.81713.84999.37951.781332.

18、501070.761499.061338.441873.821606.132248.5930363.53508.94484.70678.59646.27904.78605.88848.23807.841130.98969.411357.171292.541809.561454.112035.761817.642544.702181.173053.6433494.68692.56659.58923.41879.441231.21824.471154.261099.301539.011319.161846.821758.872462.421978.732770.232473.423462.7829

19、68.104155.3436635.30889.42847.071185.891129.421581.191058.831482.361411.781976.491694.132371.782258.843162.382541.203557.683176.504447.093811.805336.51表面被氧化（有潤滑）的螺紋聯(lián)接的擰緊力矩值（單位：N.m ）性能等級3.64.64.85.65.86.88.89.810.912.9螺紋 直徑 d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.270.380.36

20、0.510.480.680.450.630.600.850.721.010.971.351.091.521.361.901.632.283.50.430.600.570.800.761.060.711.000.951.331.141.591.522.131.712.392.142.992.563.5940.630.890.841.181.121.571.051.481.401.971.692.362.253.152.533.543.164.433.795.3151.281.791.702.392.273.182.132.982.843.983.414.774.546.365.117.166.3

21、98.957.6710.7462.173.042.894.053.865.403.625.074.826.755.798.107.7210.818.6812.1610.8515.2013.0218.2373.645.104.866.806.479.066.078.508.0911.339.7113.5912.9518.1314.5720.3918.2125.4921.8530.5985.277.387.039.849.3713.128.7812.3011.7116.4014.0519.6818.7426.2321.0829.5126.3536.8931.6244.271010.4414.621

22、3.9219.4918.5625.9817.4024.3623.2032.4827.8438.9837.1251.9741.7658.4652.2073.0862.6487.701218.2125.4924.2833.9932.3745.3230.3542.4940.4656.6548.5667.9864.7490.6472.84101.9791.04127.46109.25152.951428.9840.5738.6454.1051.5272.1348.3067.6264.4090.1677.28108.19103.04144.26115.92162.29144.90202.86173.88

23、243.431645.2263.3060.2984.4080.38112.5475.36105.50100.48140.67120.58168.81160.77225.08180.86253.21226.08316.51271.30379.811862.2187.0982.94116.12110.59154.83103.68145.15138.24193.54165.89232.24221.18309.66248.83348.36311.04435.46373.25522.552088.20123.48117.60164.64156.80219.52147.00205.80196.00274.

24、40235.20329.28313.60439.04352.80493.92441.00617.40529.20740.8822119.99167.98159.98223.98213.31298.64199.98279.97266.64373.30319.97447.96426.62597.27479.95671.93599.94839.92719.931007.9024152.50213.49203.33284.66271.10379.55254.16355.82338.88474.43406.66569.32542.21759.09609.98853.98762.481067.47914.

25、981280.9727223.07312.30297.43416.40396.58555.21371.79520.51495.72694.01594.86832.81793.151110.41892.301249.211115.371561.521338.441873.8230302.94424.12403.92565.49538.56753.98504.90706.86673.20942.48807.841130.981077.121507.971211.761696.461514.702120.581817.642544.7033412.24577.13549.65769.51732.86

26、1026.01687.06961.88916.081282.511099.301539.011465.732052.021648.942308.522061.182885.652473.423462.7836529.42741.18705.89988.24941.181317.66882.361235.301176.481647.071411.781976.491882.372635.322117.662964.732647.083705.913176.504447.09鍍鋅（無潤滑）的螺紋聯(lián)接的擰緊力矩值（單位： N.m ）性能等級3.64.64.85.65.86.88.89.810.912

27、.9螺紋 直徑 d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.300.420.400.560.530.740.500.700.660.930.801.121.061.491.201.671.492.091.792.513.50.470.660.630.880.841.170.781.101.041.461.251.751.672.341.882.632.353.292.823.9540.700.970.931.301.241.731.161.621.552.161.852.602.473.462.783.8

28、93.484.874.175.8451.411.971.872.622.503.502.343.283.124.373.755.255.007.005.627.877.039.848.4311.8162.393.343.184.464.255.943.985.575.317.436.378.918.4911.899.5513.3711.9416.7214.3320.0674.015.615.347.487.129.976.689.358.9012.4610.6814.9514.2419.9416.0222.4320.0328.0424.0333.6585.808.127.7310.8210.3

29、114.439.6613.5312.8818.0415.4621.6420.6128.8623.1932.4728.9940.5834.7848.701011.4816.0815.3121.4420.4228.5819.1426.8025.5235.7330.6242.8740.8357.1645.9464.3157.4280.3968.9096.471220.0328.0426.7137.3935.6149.8533.3846.7444.5162.3153.4174.7871.2299.7080.12112.17100.15140.21120.18168.251431.8844.6342.5

30、059.5156.6779.3453.1374.3870.8499.1885.01119.01113.34158.68127.51178.52159.39223.15191.27267.781649.7469.6366.3292.8488.42123.7982.90116.05110.53154.74132.63185.69176.84247.58198.95278.53248.69348.16298.43417.801868.4395.8091.24127.73121.65170.31114.05159.67152.06212.89182.48255.47243.30340.62273.72

31、383.20342.14479.00410.57574.802097.02135.83129.36181.10172.48241.47161.70226.38215.60301.84258.72362.21344.96482.94388.08543.31485.10679.14582.12814.9722131.99184.78175.98246.38234.64328.50219.98307.97293.30410.63351.96492.75469.29657.00527.95739.13659.93923.91791.921108.6924167.75234.84223.66313.13

32、298.21417.50279.58391.41372.77521.88447.32626.25596.43835.00670.98939.38838.731174.221006.471409.0627245.38343.53327.18458.05436.23610.73408.97572.56545.29763.41654.35916.09872.471221.45981.531374.141226.911717.671472.292061.2030333.23466.53444.31622.04592.42829.38555.39777.55740.521036.73888.621244

33、.071184.831658.761332.941866.111666.172332.641999.402799.1733453.46634.84604.61846.46806.151128.61755.771058.071007.691410.761209.231692.921612.302257.221813.842539.372267.303174.222720.763809.0636582.36815.30776.481087.071035.301449.42970.601358.831294.131811.781552.952174.142070.602898.852329.4332

34、61.202911.794076.503494.154891.80鍍鋅（有潤滑）的螺紋聯(lián)接的擰緊力矩值（單位： N.m ）性能 等級3.64.64.85.65.86.88.89.810.912.9螺紋 直徑 d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.240.340.330.460.430.610.410.570.540.760.650.910.871.220.981.371.221.711.472.053.50.380.540.510.720.680.960.640.900.851.201.031.44

35、1.371.911.542.151.922.692.313.2340.570.800.761.061.011.420.951.331.261.771.522.122.022.832.283.192.843.983.414.7851.151.611.532.152.042.861.922.682.563.583.074.294.095.734.606.445.758.056.909.6661.952.742.603.653.474.863.264.564.346.085.217.296.959.737.8110.949.7713.6811.7216.4173.284.594.376.125.83

36、8.165.467.657.2810.208.7412.2411.6516.3113.1118.3516.3922.9419.6627.5384.746.646.328.858.4311.817.9111.0710.5414.7612.6517.7116.8723.6118.9726.5623.7233.2028.4639.84109.4013.1512.5317.5416.7023.3915.6621.9220.8829.2325.0635.0833.4146.7737.5852.6246.9865.7756.3878.931216.3922.9421.8530.5929.1340.7927

37、.3138.2436.4250.9843.7061.1858.2781.5865.5591.7781.94114.7298.33137.661426.0836.5134.7848.6946.3764.9243.4760.8657.9681.1469.5597.3792.74129.83104.33146.06130.41182.57156.49219.091640.6956.9754.2675.9672.35101.2867.8294.9590.43126.60108.52151.93144.69202.57162.78227.89203.47284.86244.17341.831855.99

38、78.3874.65104.5199.53139.3593.31130.64124.42174.18149.30209.02199.07278.69223.95313.53279.94391.91335.92470.292079.38111.13105.84148.18141.12197.57132.30185.22176.40246.96211.68296.35282.24395.14317.52444.53396.90555.66476.28666.7922107.99151.18143.99201.58191.98268.77179.98251.97239.98335.97287.974

39、03.16383.96537.55431.96604.74539.95755.92647.94907.1124137.25192.14183.00256.19243.99341.59228.74320.24304.99426.99365.99512.39487.99683.18548.99768.58686.23960.72823.481152.8727200.77281.07267.69374.76356.92499.69334.61468.46446.15624.61535.38749.53713.84999.37803.071124.291003.831405.371204.601686

40、.4430272.65381.70363.53508.94484.70678.59454.41636.17605.88848.23727.061017.88969.411357.171090.581526.821363.231908.521635.882290.2333371.01519.42494.68692.56659.58923.41618.35865.70824.471154.26989.371385.111319.161846.821484.052077.671855.062597.092226.073116.5036476.47667.06635.30889.42847.07118

41、5.89794.121111.771058.831482.361270.601778.841694.132371.781905.902668.262382.373335.322858.854002.38干燥的粗加工表面的螺紋聯(lián)接的擰緊力矩值（單位： N.m ）性能等級3.64.64.85.65.86.88.89.810.912.9螺紋 直徑 d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.350.570.470.760.631.010.590.950.781.270.941.521.262.031.412.2

42、81.772.852.123.423.50.560.900.741.200.991.590.931.491.231.991.482.391.973.192.223.592.784.483.335.3840.821.331.101.771.462.361.372.211.832.952.193.542.924.723.295.314.116.644.937.9751.662.682.223.582.954.772.774.473.695.964.437.165.919.546.6510.748.3113.429.9716.1062.824.563.766.085.028.104.707.606.2710.137.5312.1610.0316.2111.2918.2314.1122.7916.9327.3574.737.656.3110.208.4213.597.8912.7410.5216.9912.6220.3916.8327.1918.9430.5923.6738.2328.4045.8886.8511.079.1414.7612.1819.6811.4218.4515.2324.6018