锥管螺纹拧紧力矩4篇.docx
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锥管螺纹拧紧力矩4篇.docx
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锥管螺纹拧紧力矩4篇
锥管螺纹拧紧力矩(4篇)
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篇一
常用螺纹一般拧紧力矩(N.m)
螺纹直径/mm
螺栓强度级别
4.6
5.6
6.6
10.9
螺纹直径/mm
螺栓强度级别
4.6
5.6
6.6
10.9
M6
3.43
4.51
5.10
11.37
M8
8.23
10.98
12.35
27.54
M10
16.37
12.05
24.5
54.9
M12
28.4
38.2
43.1
95.1
M14
45.1
60.8
68.6
147
M16
70.6
94.1
106.8
235
M18
98
130
146
323
M20
137
184
208
461
M22
186
251
284
627
M24
235
319
359
794
M30
470
637
715
1588
M36
833
1107
1245
2764
M48
注:
螺母预紧力矩的计算公式为:
T=KFd K=0.15~0.2;F――螺栓预紧力;d――螺纹直径。
3.1螺栓预紧力推荐表
序号
强度等级
4.8
6.8
8.8
10.9
12.9
最小
破断强度
392MPa
588MPa
784MPa
941MPa
1176MPa
材质
一般
构造用钢
机械
构造用钢
铬铝合金钢
镍铬铝
合金钢
镍铬合金钢
螺栓
对边
N.m
kg.m
N.m
kg.m
N.m
kg.m
N.m
kg.m
N.m
kg.m
1
M14
22
69
7
98
10
137
14
165
17
226
23
2
M16
24
98
10
137
14
206
21
247
25
353
36
3
M18
27
137
14
206
21
284
29
341
35
481
49
4
M20
30
177
18
275
28
402
41
569
58
677
69
5
M22
32
226
23
333
34
539
55
765
78
912
93
6
M24
36
314
32
471
48
686
70
981
100
1177
120
7
M27
41
441
45
637
65
1030
105
1472
150
1765
180
8
M30
46
588
60
883
90
1226
125
1962
200
2354
240
9
M33
50
735
75
1128
115
1471
150
2060
210
2452
250
10
M36
55
981
100
1471
150
1765
180
2453
250
2942
300
11
M39
60
1177
120
1765
180
2157
220
2943
300
3628
370
12
M42
65
1520
155
2354
240
2746
280
3826
390
4609
470
13
M45
70
1765
180
2746
280
3138
320
4415
450
5394
550
14
M48
75
2256
230
3432
350
3923
400
5592
570
6669
680
15
M52
80
2746
280
4119
420
4707
480
6573
670
8336
850
16
M56
85
3530
360
5198
530
5982
610
8437
860
10297
1050
17
M60
90
4021
410
5982
610
7747
790
10791
1100
13239
1350
18
M64
95
5001
510
7453
760
8826
900
19
M68
100
5688
580
8532
870
10787
1100
20
M72
105
6672
660
9807
1000
12651
1290
21
M76
110
7355
750
10787
1100
14710
1500
22
M80
115
8140
830
12256
1250
18142
1850
23
M85
120
8826
900
13729
1400
22065
2250
24
M90
130
10591
1080
16181
1650
24517
2500
25
M100
145
13729
1400
20104
2500
26
M110
155
16377
1670
25007
2550
27
M120
175
19907
2030
29910
3050
28
M125
180
注:
表中数值为最大力矩值,建议锁紧力矩值为:
表中数据×(70~80)%。
篇二
螺纹规则拧紧力矩(N.m)
性能等级5.6性能等级8.8性能等级10.9M65-76-1011-14M812-1519-2422-29M8×114-1821-2824-31M1024-3035-4743-53M10×1.2528-3241-5348-59M10×130-3642-5451-58M1242-5360-7280-101M12×1.544-5666-8288-107M12×1.2547-6072-8594-114M1472-8796-126144-175M14×1.580-96106-132160-204M16108-127156-200199-234M16×1.5116-144168-204214-252M18156-180192-226240-260M18×1.5162-192204-240250-300M20216-243312-372384-439M20×1.5240-264324-384433-480
另外还可以根据T=kDF来计算拧紧扭矩,其中,k是扭矩系数,D是公称直径,F是螺栓预紧力
篇三
中华人民共和国汽车行业标准
汽车用螺纹紧固件拧紧力矩规范
本标准适用于碳素钢或合金钢制造的螺纹直径为6-20㎜、6级精度以上的汽车用一般螺栓、螺钉、螺柱和螺母的紧固。
其螺纹尺寸及公差按GB193-1981《普通螺纹直径与螺距系列》、GB196-1981《普通螺纹基本尺寸》和GB197-1981《普通螺纹公差与配合》标准的规范;螺栓、螺钉、螺柱和螺母机械性能,螺栓、螺钉、螺柱与螺母被拧入基体件强度级别的组合按GB3098-1982《紧固件机械性能》标准的规定。
本标准不适用于承受交变载荷或加润滑剂装配的螺栓、螺钉、螺柱和螺母的紧固件,以及紧定螺钉和类似的不规定抗拉强度的螺纹紧固件。
1、汽车用螺纹紧固件拧紧力矩
国家机械工业局1999-03-15批准实施
附录
螺纹紧固件的拧紧力矩
在拧紧螺母时,其拧紧扭矩M需要克服被旋合螺纹间的摩擦力矩和螺母与被联接件(或垫圈)支承面之间的摩擦力矩,并使联接产生预紧力P。
,它们的关系为
M=KP。
d×10-3
式中:
M——拧紧扭矩,Nm
K——拧紧扭矩系数;P。
——预紧力,N;d——螺纹直径,㎜。
要想得到规定的预紧力,应进行的量的实验求出拧紧扭矩系数的实际数值,通过以上的关系计算,把一定大小的扭矩施加到螺母上就能得到。
通过实验和数学分析得出,汽车用普通螺纹紧固件拧紧扭矩系数的平均值为0.284。
对于表1-表4中未规定的各级机械性能的螺纹紧固件的拧紧扭矩,可按(A2)、(A3)、(A5)经验公式计算确定。
螺纹紧固件最大拧紧扭矩为
Mmax=0.170σsAsd×10-3
式中Mmax——最大拧紧扭矩,Nm
σs——螺纹紧固件的屈服强度N/mm2;As——螺纹部分有效面积,mm2。
AS=(d2+d32
)
42
式中:
d2——螺纹中径,㎜;
d3=d1-H/6,㎜;
d1——螺纹小径,㎜;H=0.866p,㎜;p——螺距,㎜。
螺纹紧固件标准拧紧扭矩为
M=0.142σsAsd×10-3
螺纹紧固件最小拧紧扭矩为
Mmin=0.114σsAsd×10-3
式中:
Mmin——最小拧紧扭矩,Nm。
篇四
螺纹联接的拧紧力矩计算
Mt=K×P0×d×10
-3
N.m
K:
拧紧力系数d:
螺纹公称直径P0:
预紧力
P0=σ0×AsAs也可由下面表查出
As=π×ds2/4ds:
螺纹部分危险剖面的计算直径ds=(d2+d3)/2d3=d1-H/6H:
螺纹牙的公称工作高度
σ0=(0.5~0.7)σsσs――――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)
K值
摩擦表面状况
有润滑
精加工表面一般加工表面表面氧化镀锌干燥的粗加工表面
无润滑
σs查表:
螺纹性能等级σs或σ0.2N/mm2
As查表:
螺纹公称直径d/mm
33.545
6
7
[***********]7303336
公称应力截面积As/mm25.036.788.7814.220.128.936.65884.[***********][1**********]17
通过计算得到螺栓联接拧紧力矩如下表所示:
3.64.64.85.65.86.88.89.810.912.[***********][1**********]080
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3.6
4.6
4.8
5.6
5.8
6.8
8.8
9.8
10.9
12.9
螺纹直径
d/mmmin345678
maxmin0.430.681.012.043.475.838.43
max0.610.961.422.864.868.16
min0.580.911.352.734.63
max0.811.281.893.826.48
min0.540.851.262.564.347.2810.5420.8836.4257.96
max0.761.201.773.586.0810.2014.7629.2350.9881.14
min0.721.141.693.415.799.7114.0527.8448.56
max1.011.592.364.778.1013.5919.6838.9867.98
min0.871.372.024.096.9511.6516.8733.4158.27
max1.221.912.835.739.73
min1.161.822.705.459.26
max1.622.553.787.6312.9721.7531.4862.36
min1.302.053.036.1310.4217.4825.3050.11
max1.832.874.258.5914.5924.4735.4270.16
min1.632.563.797.6713.0221.8531.6262.64
max2.283.595.3110.7418.2330.5944.2787.70
min1.963.084.55
max2.744.316.37
0.330.460.761.061.532.152.603.654.376.126.328.85
3.50.510.72
9.2012.8815.6321.8826.2236.7137.9553.1375.17105.247.7710.8816.3115.5423.6122.4946.7744.54
11.8111.2415.74
1012.5317.5416.7023.3922.2731.181221.8530.5929.1340.7938.8554.381434.7848.6946.3764.9261.8286.551654.2675.9672.35101.2896.46135.05
81.5877.69108.7787.40122.36109.25152.95131.10183.5477.28108.19
92.74129.83123.65173.11139.10194.75173.88243.43208.66292.1290.43126.60120.58168.81144.69202.57192.92270.09217.04303.85271.30379.81325.56455.781874.65104.5199.53139.35132.71185.79124.42174.18165.89232.24199.07278.69265.42371.59298.60418.04373.25522.55447.90627.0620105.84148.18141.12197.57188.16263.42176.40246.96235.20329.28282.24395.14376.32526.85423.36592.70529.20740.88635.04889.0622143.99201.58191.98268.77255.97358.36239.98335.97319.97447.96383.96537.55511.95716.73575.94806.32719.931007.90863.911209.4824183.00256.19243.99341.59325.32455.45304.99426.99406.66569.32487.99683.18650.65910.91731.981024.77914.981280.971097.971537.1627267.69374.76356.92499.69475.89666.25446.15624.61594.86832.81713.84999.37951.781332.501070.761499.061338.441873.821606.132248.5930363.53508.94484.70678.59646.27904.78605.88848.23807.841130.98969.411357.171292.541809.561454.112035.761817.642544.702181.173053.6433494.68692.56659.58923.41879.441231.21824.471154.261099.301539.011319.161846.821758.872462.421978.732770.232473.423462.782968.104155.3436635.30889.42847.071185.891129.421581.191058.831482.361411.781976.491694.132371.782258.843162.382541.203557.683176.504447.093811.805336.51
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3.6
4.6
4.8
5.6
5.8
6.8
8.8
9.8
10.9
12.9
螺纹直径
d/mmmin345678
maxmin0.360.570.841.702.894.867.03
maxminmax
min0.450.711.052.133.626.078.78
max0.631.001.482.985.078.5012.30
min0.600.951.402.844.828.0911.7123.2040.4664.40
max0.851.331.973.986.7511.3316.4032.4856.6590.16
min0.721.141.693.415.799.7114.0527.8448.56
max1.011.592.364.778.10
min0.971.522.254.547.72
max1.352.133.156.3610.8118.1326.2351.9790.64
min1.091.712.535.118.6814.5721.0841.76
max1.522.393.547.1612.1620.3929.5158.46
min1.362.143.166.3910.8518.2126.3552.20
max1.902.994.438.9515.2025.4936.8973.08
min1.632.563.797.6713.0221.8531.6262.64
max2.283.595.3110.7418.2330.5944.2787.70
0.270.380.630.891.281.792.173.043.645.105.277.38
0.510.480.680.800.761.061.181.121.572.392.273.184.053.865.406.806.479.069.849.3713.12
3.50.430.60
13.5912.9519.6818.7438.9837.1267.9864.74
1010.4414.6213.9219.4918.5625.9817.4024.361218.2125.4924.2833.9932.3745.3230.3542.491428.9840.5738.6454.1051.5272.1348.3067.62
72.84101.9791.04127.46109.25152.9577.28108.19103.04144.26115.92162.29144.90202.86173.88243.431645.2263.3060.2984.4080.38112.5475.36105.50100.48140.67120.58168.81160.77225.08180.86253.21226.08316.51271.30379.811862.2187.0982.94116.12110.59154.83103.68145.15138.24193.54165.89232.24221.18309.66248.83348.36311.04435.46373.25522.552088.20123.48117.60164.64156.80219.52147.00205.80196.00274.40235.20329.28313.60439.04352.80493.92441.00617.40529.20740.8822119.99167.98159.98223.98213.31298.64199.98279.97266.64373.30319.97447.96426.62597.27479.95671.93599.94839.92719.931007.9024152.50213.49203.33284.66271.10379.55254.16355.82338.88474.43406.66569.32542.21759.09609.98853.98762.481067.47914.981280.9727223.07312.30297.43416.40396.58555.21371.79520.51495.72694.01594.86832.81793.151110.41892.301249.211115.371561.521338.441873.8230302.94424.12403.92565.49538.56753.98504.90706.86673.20942.48807.841130.981077.121507.971211.761696.461514.702120.581817.642544.7033412.24577.13549.65769.51732.861026.01687.06961.88916.081282.511099.301539.011465.732052.021648.942308.522061.182885.652473.423462.7836529.42741.18705.89988.24941.181317.66882.361235.301176.481647.071411.781976.491882.372635.322117.662964.732647.083705.913176.504447.09
镀锌(无润滑)的螺纹联接的拧紧力矩值(单位:
N.m)
性能等级3.6
4.6
4.8
5.6
5.8
6.8
8.8
9.8
10.9
12.9
螺纹直径
d/mmmin345678
maxmin0.400.630.931.873.185.347.73
max0.560.881.302.624.467.48
min0.530.841.242.504.257.12
max0.741.171.733.505.949.97
min0.500.781.162.343.986.689.66
max0.701.101.623.285.579.3513.53
min0.661.041.553.125.318.9012.8825.5244.5170.84
max0.931.462.164.377.4312.4618.0435.7362.3199.18
min0.801.251.853.756.3710.6815.4630.6253.4185.01
max1.121.752.605.258.91
min1.061.672.475.008.49
max1.492.343.467.0011.8919.9428.8657.1699.70
min1.201.882.785.629.5516.0223.1945.9480.12
max1.672.633.897.8713.3722.4332.4764.31
min1.492.353.487.0311.9420.0328.9957.42
max2.093.294.879.8416.7228.0440.5880.39
min1.792.824.178.43
max2.513.955.8411.81
0.300.420.700.971.411.972.393.344.015.615.808.
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