螺栓的鎖緊力矩研究和計(jì)算方法

1、角外/、角螺栓直徑din267性能等級（螺栓強(qiáng)度等級）栓螺栓3.65.66.98.810.912.9)s(mm)m(mm)fv(n)ma (nmfv(n)ma (nrmfv(n)ma (nn)fv(n)ma (nn)fv(n)ma (nn)fv(n)m4m22550.13450.157100.38350.351,1700.51,4155m2.54850.266550.351,3100.711,5500.832,1801.182,6205.5m36300.371,0500.621,7000.992,2501.33,1501.93,8006m3.58500.571,4000.952,2501.53

2、,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、21m1210,8002418,0004028,80065

3、38,4008556,50012566,00022、23m1414,8003924,7006439,50010552,50013577,50020090,50024、26m1620,4005934,0009854,50015572,500210107,000310125,00027m1824,8008141,30013566,00021591,000300129,000430152,00030m2031,90011553,00019085,000305117,000425166,000610195,00032m2239,90015566,500260106,000415146,00058020

4、8,000820244,00036m2445,90020076,500330122,000530168,000730240,0001,050281,00041m2780,500295100,000490161,000780222,0001,100316,0001,550369,00046m3073,500395122,000660196,0001,050269,0001,450384,0002,100449,00050m3391,500540153,000900244,0001,450326,0001,900458,0002,700550,00055m36107,000690179,0001,

5、150287,0001,850382,0002,450537,0003,450645,00060m39129,000900215,0001,500345,0002,400460,0003,200646,0004,500775,00065m42148,0001,100247,0001,850395,0002,950526,0003,950740,0005,550888,00070m45173,0001,400289,0002,300462,0003,700616,0004,950867,0006,9501,050,00075m48195,0001,700325,0002,800520,0004,

6、450693,0005,950974,0008,4001,150,000,80m52234,0002,150390,0003,600624,0005,750832,0007,6501,169,00010,8001,403,00085m56270,0002,700450,0004,500719,0007,150959,0009,5501,349,00013,4001,618,00090m60315,0003,350525,0005,550841,0008,9001,121,00011,9001,576,00016,7001,892,00095m64357,0004,000595,0006,700

7、951,00010,7001,268,00014,3001,784,00021,1002,140,000六角或外六方兩平彳亍邊距離fv-螺栓預(yù)緊力ma-螺栓扭矩返回上層按卜列公式確定最小破壞ta矩;=1bed"， ft式中,w* = kl6*d濡 ogn箕中.mg.一最小破壞扭矩(見表2；由扭轉(zhuǎn)強(qiáng)度卬一抗扭被面模數(shù)由他外螺紋小徑最小值"抗拉強(qiáng)度x 強(qiáng)度比“力(見友】).表強(qiáng)度比x_性能等級8.8亂812. g比值一0-84(u150.790.75表2最小破壞扭矩鰥次規(guī)格叫所mm最小破壞扭延”, m螺紋規(guī)格螺距mmm小破壞扭匏” 切jn , m性能 9-8群謖 104912.

8、9少8性能9.8等跛10.912.9mlcu50.0330.0360- 04。0,045m50, 88.39310 10.250.0750。呢0. 0920. 10m6113l41617ml. 40.30. 120. 130,140. 16m71p 23252b31-ml. 66 35&160. 18oh 20q 22m1.2533364044m2m2-5p 0u5：0.37 。.腕0.400.900.45l00501jm8x1m101.5p 3865j 42724681529qm30.51.5 1.71.9zim10x18492102口。m3. 5m4& 60.73"

9、;2*73.93.04.43-34*9m10xl251最小ir扭中也75喇.g.bf 和916片的聚£t.手握扳手?jǐn)Q緊螺絲，手到螺絲的距離 x所用的力就是鎖緊力矩asme標(biāo)準(zhǔn)接口螺紋g1"表示是1英寸的管螺紋，表示螺紋的內(nèi)孔通徑的公稱尺寸是 1英寸(25.4毫米)兩個(gè)點(diǎn)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(jìn)行管道的連接，使其內(nèi)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：npk pt、g等。1) npt是national(american)pipe thread的縮寫，屬于 美國標(biāo)準(zhǔn) 的60度椎管

10、螺紋，用于北美地區(qū)，國標(biāo)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(biāo)查閱 gb/t7306-2000。國內(nèi)叫法為 zg.。3) g是55度非密封管螺紋，屬惠氏螺紋家族。標(biāo)記為 g代表圓柱螺紋。國標(biāo)查閱gb/t7307-2001 。unf是united fine thread ,即英制細(xì)牙螺紋。unc :統(tǒng)一粗牙螺紋螺紋聯(lián)接的擰緊力矩計(jì)算mt=kx p0xdx 10 3 n.mk:擰緊力系數(shù)d:螺紋公稱直徑p。：預(yù)緊力po= oox

11、asas也可由下面表查出as=兀x ds2/4ds:螺紋部分危險(xiǎn)剖面的計(jì)算直徑ds= （d2+d3）/2d3= d1h/6 h:螺紋牙的公稱工作高度00 = （0.50.7） cscs螺栓材料的屈服極限n/mm2 （與強(qiáng)度等級相關(guān)，材質(zhì)決定）k值查表：（k值計(jì)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0.260.3螺紋性能等級3.64.64.85.65.86.88.89.810.912.9er s 或 o 0.2n/mm218024032030040048064072

12、09001080as查表:螺紋公稱直徑d/mm33.5456781012141618202224273c3336公稱應(yīng)力截回積 as/mm25.036.788.7814.220.128.936.65884.3115157192245303353459561694817通過計(jì)算得到螺栓聯(lián)接擰緊力矩如下表所示:鋼結(jié)構(gòu)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(gè)等級，其中 8.8級及以上螺栓材質(zhì)為低碳合金鋼或中碳鋼并經(jīng)熱處理（淬火、回火），通稱為高強(qiáng)度螺栓，其余通稱為普通螺栓螺栓性能等級標(biāo)號有兩部分?jǐn)?shù)字組成，分別表示螺栓材料的公稱抗拉強(qiáng)度值

13、和屈強(qiáng)比值。例如，性能等級4.6級的螺栓，其含義是：1 、螺栓材質(zhì)公稱抗拉強(qiáng)度達(dá) 400mpa 級；2 、螺栓材質(zhì)的屈強(qiáng)比值為0.6 ；3、螺栓材質(zhì)的公稱屈服強(qiáng)度達(dá)400 x 0.6=240mpa 級性能等級 10.9 級高強(qiáng)度螺栓，其材料經(jīng)過熱處理后，能達(dá)到1 、螺栓材質(zhì)公稱抗拉強(qiáng)度達(dá)1000mpa 級；2 、螺栓材質(zhì)的屈強(qiáng)比值為0.9 ；3、螺栓材質(zhì)的公稱屈服強(qiáng)度達(dá) 1000 x0.9=900mpa級螺栓性能等級的含義是國際通用的標(biāo)準(zhǔn)，相同性能等級的螺栓，不管其材料和產(chǎn)地的區(qū)別，其性能是相同的，設(shè)計(jì)上只選用性能等級即可n.m)表面被氧化（無潤滑）的螺紋聯(lián)接的擰緊力矩值（單位:一匕匕3.64

14、.64.85.65.86.88.89.810.912.9螺紋 直徑d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.330.460.430.610.580.810.540.760.721.010.871.221.161.621.301.831.632.281.962.743.50.510.720.680.960.911.280.851.201.141.591.371.911.822.552.052.872.563.593.084.3140.761.061.011.421.351.891.261.771.692.

15、362.022.832.703.783.034.253.795.314.556.3751.532.152.042.862.733.822.563.583.414.774.095.735.457.636.138.597.6710.749.2012.8862.603.653.474.864.636.484.346.085.798.106.959.739.2612.9710.4214.5913.0218.2315.6321.8874.376.125.838.167.7710.887.2810.209.7113.5911.6516.3115.5421.7517.4824.4721.8530.5926.

16、2236.7186.328.858.4311.8111.2415.7410.5414.7614.0519.6816.8723.6122.4931.4825.3035.4231.6244.2737.9553.131012.5317.5416.7023.3922.2731.1820.8829.2327.8438.9833.4146.7744.5462.3650.1170.1662.6487.7075.17105.241221.8530.5929.1340.7938.8554.3836.4250.9848.5667.9858.2781.5877.69108.7787.40122.36109.2515

17、2.95131.10183.541434.7848.6946.3764.9261.8286.5557.9681.1477.28108.1992.74129.83123.65173.11139.10194.75173.88243.43208.66292.121654.2675.9672.35101.2896.46135.0590.43126.60120.58168.81144.69202.57192.92270.09217.04303.85271.30379.81325.56455.781874.65104.5199.53139.35132.71185.79124.42174.18165.892

18、32.24199.07278.69265.42371.59298.60418.04373.25522.55447.90627.0620105.84148.18141.12197.57188.16263.42176.40246.96235.20329.28282.24395.14376.32526.85423.36592.70529.20740.88635.04889.0622143.99201.58191.98268.77255.97358.36239.98335.97319.97447.96383.96537.55511.95716.73575.94806.32719.931007.9086

19、3.911209.4824183.00256.19243.99341.59325.32455.45304.99426.99406.66569.32487.99683.18650.65910.91731.981024.77914.981280.971097.971537.1627267.69374.76356.92499.69475.89666.25446.15624.61594.86832.81713.84999.37951.781332.501070.761499.061338.441873.821606.132248.5930363.53508.94484.70678.59646.2790

20、4.78605.88848.23807.841130.98969.411357.171292.541809.561454.112035.761817.642544.702181.173053.6433494.68692.56659.58923.41879.441231.21824.471154.261099.301539.011319.161846.821758.872462.421978.732770.232473.423462.782968.104155.3436635.30889.42847.071185.891129.421581.191058.831482.361411.781976

21、.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）-匕匕 育級 一性等一3.64.64.85.65.86.88.89.810.912.9螺紋 直徑d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.270.380.360.510.480.680.450.630.600.850.721.010.971.351.091.521.361.901.632.283.50.

22、430.600.570.800.761.060.711.000.951.331.141.591.522.131.712.392.142.992.563.5940.630.890.841.181.121.571.051.481.401.971.692.362.253.152.533.543.164.433.795.3151.281.791.702.392.273.182.132.982.843.983.414.774.546.365.117.166.398.957.6710.7462.173.042.894.053.865.403.625.074.826.755.798.107.7210.818

23、.6812.1610.8515.2013.0218.2373.645.104.866.806.479.066.078.508.0911.339.7113.5912.9518.1314.5720.3918.2125.4921.8530.5985.277.387.039.849.3713.128.7812.3011.7116.4014.0519.6818.7426.2321.0829.5126.3536.8931.6244.271010.4414.6213.9219.4918.5625.9817.4024.3623.2032.4827.8438.9837.1251.9741.7658.4652.2

24、073.0862.6487.701218.2125.4924.2833.9932.3745.3230.3542.4940.4656.6548.5667.9864.7490.6472.84101.9791.04127.46109.25152.951428.9840.5738.6454.1051.5272.1348.3067.6264.4090.1677.28108.19103.04144.26115.92162.29144.90202.86173.88243.431645.2263.3060.2984.4080.38112.5475.36105.50100.48140.67120.58168.8

25、1160.77225.08180.86253.21226.08316.51271.30379.811862.2187.0982.94116.12110.59154.83103.68145.15138.24193.54165.89232.24221.18309.66248.83348.36311.04435.46373.25522.552088.20123.48117.60164.64156.80219.52147.00205.80196.00274.40235.20329.28313.60439.04352.80493.92441.00617.40529.20740.8822119.99167

26、.98159.98223.98213.31298.64199.98279.97266.64373.30319.97447.96426.62597.27479.95671.93599.94839.92719.931007.9024152.50213.49203.33284.66271.10379.55254.16355.82338.88474.43406.66569.32542.21759.09609.98853.98762.481067.47914.981280.9727223.07312.30297.43416.40396.58555.21371.79520.51495.72694.0159

27、4.86832.81793.151110.41892.301249.211115.371561.521338.441873.8230302.94424.12403.92565.49538.56753.98504.90706.86673.20942.48807.841130.981077.121507.971211.761696.461514.7c2120.581817.642544.7033412.24577.13549.65769.51732.861026.01687.06961.88916.081282.511099.301539.011465.732052.021648.942308.5

28、22061.182885.652473.423462.7836529.42741.18705.89988.24941.181317.66882.361235.301176.481647.071411.781976.491882.372635.322117.662964.732647.083705.913176.504447.09鍍鋅（無潤滑）的螺紋聯(lián)接的擰緊力矩值（單位：n.m）匕匕育級 性等3.64.64.85.65.86.88.89.810.912.9螺紋 直徑 d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax

29、30.300.420.400.560.530.740.500.700.660.930.801.121.061.491.201.671.492.091.792.513.50.470.660.630.880.841.170.781.101.041.461.251.751.672.341.882.632.353.292.823.9540.700.970.931.301.241.731.161.621.552.161.852.602.473.462.783.893.484.874.175.8451.411.971.872.622.503.502.343.283.124.373.755.255.007.

30、005.627.877.039.848.4311.8162.393.343.184.464.255.943.985.575.317.436.378.918.4911.899.5513.3711.9416.7214.3320.0674.015.615.347.487.129.976.689.358.9012.4610.6814.9514.2419.9416.0222.4320.0328.0424.0333.6585.808.127.7310.8210.3114.439.6613.5312.8818.0415.4621.6420.6128.8623.1932.4728.9940.5834.7848

31、.701011.4816.0815.3121.4420.4228.5819.1426.8025.5235.7330.6242.8740.8357.1645.9464.3157.4280.3968.9096.471220.0328.0426.7137.3935.6149.8533.3846.7444.5162.3153.4174.7871.2299.7080.12112.17100.15140.21120.18168.251431.8844.6342.5059.5156.6779.3453.1374.3870.8499.1885.01119.01113.34158.68127.51178.521

32、59.39223.15191.27267.781649.7469.6366.3292.8488.42123.7982.90116.05110.53154.74132.63185.69176.84247.58198.95278.53248.69348.16298.43417.801868.4395.8091.24127.73121.65170.31114.05159.67152.06212.89182.48255.47243.30340.62273.72383.20342.14479.00410.57574.802097.02135.83129.36181.10172.48241.47161.7

33、0226.38215.60301.84258.72362.21344.96482.94388.08543.31485.10679.14582.12814.9722131.99184.78175.98246.38234.64328.50219.98307.97293.30410.63351.96492.75469.29657.00527.95739.13659.93923.91791.921108.6924167.75234.84223.66313.13298.21417.50279.58391.41372.77521.88447.32626.25596.43835.00670.98939.38

34、838.731174.221006.471409.0627245.38343.53327.18458.05436.23610.73408.97572.56545.29763.41654.35916.09872.471221.45981.531374.141226.911717.671472.292061.2030333.23466.53444.31622.04592.42829.38555.39777.55740.521036.73888.621244.071184.831658.761332.941866.111666.172332.641999.402799.1733453.46634.8

35、4604.61846.46806.151128.61755.771058.071007.691410.761209.231692.921612.302257.221813.842539.372267.303174.222720.763809.0636582.36815.30776.481087.071035.301449.42970.601358.831294.131811.781552.952174.142070.602898.852329.433261.202911.794076.503494.154891.80鍍鋅（有潤滑）的螺紋聯(lián)接的擰緊力矩值（單位：n.m）匕匕育級 一也等一3.64

36、.64.85.65.86.88.89.810.912.9螺紋 直徑 d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.240.340.330.460.430.610.410.570.540.760.650.910.871.220.981.371.221.711.472.053.50.380.540.510.720.680.960.640.900.851.201.031.441.371.911.542.151.922.692.313.2340.570.800.761.061.011.420.951.331.261

37、.771.522.122.022.832.283.192.843.983.414.7851.151.611.532.152.042.861.922.682.563.583.074.294.095.734.606.445.758.056.909.6661.952.742.603.653.474.863.264.564.346.085.217.296.959.737.8110.949.7713.6811.7216.4173.284.594.376.125.838.165.467.657.2810.208.7412.2411.6516.3113.1118.3516.3922.9419.6627.53

38、84.746.646.328.858.4311.817.9111.0710.5414.7612.6517.7116.8723.6118.9726.5623.7233.2028.4639.84109.4013.1512.5317.5416.7023.3915.6621.9220.8829.2325.0635.0833.4146.7737.5852.6246.9865.7756.3878.931216.3922.9421.8530.5929.1340.7927.3138.2436.4250.9843.7061.1858.2781.5865.5591.7781.94114.7298.33137.66

39、1426.0836.5134.7848.6946.3764.9243.4760.8657.9681.1469.5597.3792.74129.83104.33146.06130.41182.57156.49219.091640.6956.9754.2675.9672.35101.2867.8294.9590.43126.60108.52151.93144.69202.57162.78227.89203.47284.86244.17341.831855.9978.3874.65104.5199.53139.3593.31130.64124.42174.18149.30209.02199.0727

40、8.69223.95313.53279.94391.91335.92470.292079.38111.13105.84148.18141.12197.57132.30185.22176.40246.96211.68296.35282.24395.14317.52444.53396.90555.66476.28666.7922107.99151.18143.99201.58191.98268.77179.98251.97239.98335.97287.97403.16383.96537.55431.96604.74539.95755.92647.94907.1124137.25192.14183

41、.00256.19243.99341.59228.74320.24304.99426.99365.99512.39487.99683.18548.99768.58686.23960.72823.481152.8727200.77281.07267.69374.76356.92499.69334.61468.46446.15624.61535.38749.53713.84999.37803.071124.291003.831405.371204.601686.4430272.65381.70363.53508.94484.70678.59454.41636.17605.88848.23727.0

42、61017.88969.411357.171090.581526.821363.231908.521635.882290.2333371.01519.42494.68692.56659.58923.41618.35865.70824.471154.26989.371385.111319.161846.821484.052077.671855.062597.092226.073116.5036476.47667.06635.30889.42847.071185.89794.121111.771058.831482.361270.601778.841694.132371.781905.902668.262382.373335.322858.854002.38干燥的粗加工表面的螺紋聯(lián)接的擰緊力矩值（單位：n.m）-匕匕3.64.64.85.65.86.88.89.810.912.9螺紋 直徑d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.350.570.470.760.631.010.590.950.781.270.941.521.262.031.412.281.772.852.123.423.50.560.900.741.200.991.590.931.4