管法兰螺栓扭矩计算 CALCULATION OF TARGET TORQUE FOR NOZZLE FLANGE



管法兰螺柱扭矩计算 CALCULATION OF TARGET TORQUE FOR NOZZLE FL.

ACCORDING TO ASME PCC-1  Appendix J Doc. TE-CL-02

条件数据 INPUT DATA

法兰接口 Flange description

N1

法兰通径 Nozzle Fl. Size

DN

100

法兰等级 Nozzle Rating

Class 1500

d

螺纹公称直径 Bolt Size

M

33

螺柱尺寸信息

螺柱材质 Bolt material

35CrMoA

[σ]s

螺柱室温下屈服强度 Bolt yield stress in tightening condition

=

724.00

MPa

螺柱螺距

行11值输入

P%

材料屈服强度利用百分比 Percentage utilization factor for material yield strength

=

0.5

标准值：

3

钢号

螺柱规格 mm

ReL Mpa

f1

螺纹啮合面摩擦系数 coefficient of friction for the threads

=

0.14

非标值：

默认不填，只有与标准值不同时填写

M

fn

螺母或螺栓头部与法兰接触面间的摩擦系数 coefficient of friction for the nut face or bolt head

=

0.20

20(GB/T 699)

M0

~

M22

245

P1

螺纹螺距 Pitch of Thread

=

3

mm

螺柱尺寸信息

>

M24

~

M27

235

As

螺栓根径截面积 Tensile stress area of thread

=

715.62

mm2

1.

螺纹小径 Min diameter

d1

=

29.752

mm

De

螺母承载面的有效直径 effective bearing diameter of the nut face

De=(d0+di)/2

=

43.2

mm

2.

螺纹中径 Mid diameter

d2

=

31.051

mm

35(GB/T 699)

M0

~

M22

315

d0

螺母承载面外径 outer bearing diameter of the nut face

=

50.8

mm

3.

螺纹原始三角形高度 Factor

H

=

2.60

mm

>

M24

~

M27

295

di

螺母承载面内径 inner bearing diameter of the nut face

=

35.6

mm

4.

螺纹升角 Helix angle

λ

=

0.03

rad

40MnB

M0

~

M22

685

d2

螺纹中径 basic pitch diameter of the thread

=

31.051

mm

5.

螺纹当量摩擦角 Thread Friction angle

ρv

=

1.54

rad

>

M24

~

M36

635

β

螺纹半角 half included angle for the threads

=

30

°

40MnVB

M0

~

M22

735

>

M24

~

M36

685

螺栓预紧力 Bolt preload calculation

40Cr

M0

~

M22

685

>

M24

~

M36

635

Wo

=

2.59E+05

N

30CrMoA

M0

~

M22

550

>

M24

~

M48

500

扭矩计算 Tightening torque Cal.

>

M52

~

M56

500

35CrMoA

M0

~

M22

735

T

=

1893.00

N.m

>

M24

~

M48

685

>

M52

~

M80

685

>

M85

~

M105

590

35CrMoVA

M52

~

M105

735

>

M110

~

M140

665

25Cr2MoVA

M0

~

M22

735

>

M24

~

M48

735

>

M52

~

M105

685

>

M110

~

M140

590

40CrNiMoA

M52

~

M140

825