JB/T 6469-1992 Inverted tapered external thread for steam turbines

JB/T 6469-1992 Inverted taper external thread for steam turbine JB/T6469-1992 Standard download and decompression password: www.bzxz.net

K54 | | tt | | JB |
1 Subject content and scope of application
JB/T64691992
This standard specifies the studs (bolts) for steam turbines ) of the inverted taper external thread size series (the internal thread in the thread pair still uses ordinary threads). This standard applies to studs (bolts) used in steam turbines. This standard also applies to studs (bolts) subjected to alternating loads. 2 Reference standards
GB196 basic dimensions of ordinary threads (diameter 1 ~ 600mm) 3 Definition
Ordinary threads with a taper, the large end of the taper is at the thread end face, and the center line of the tooth form angle is perpendicular to the thread axis The thread is called an inverted taper external thread. The major diameter, middle diameter, and minor diameter of the inverted external thread all have inverted tapers. 4Basic form
4.1 The taper of the inverted cone external thread is divided into two types: 3:10008:1000. 4.2 The tooth shape of the inverted cone external thread is an ordinary thread. Its basic size series is selected according to the regulations of GB196. 4.3 The nominal size of the inverted taper external thread is the nominal size of the large end of the cone. 5 Code
Example:
i=1, means The inverse taper is 3: 1000
i=2, which means the inverse taper is 8: 1000
means the inverse taper
means the pitch
means the nominal diameter of the thread||tt| |Indicates ordinary threads
, reverse taper external thread with a reverse taper of 8:1000. 1992-08-06rat
1993-01-01
6 size series
JB/T64691992
6.131000 inverted taper external thread size The series is shown in Table 1, Table 2 and Figure 1. 6.28: The basic dimensions of the 1000 inverted taper external thread are shown in Table 3, Table 4 and Figure 2. 90° axis
Figure 1
3.2/|| tt||Diameter
Table 1 (inverted taper 31000)
Thread specifications
M12~-M14
M27~M120×3
M130X4~M160×6
Thread specifications
M27×2
M30×3||tt ||M33×3
Basic diameter Basic pitch diameter
foot| |tt||10.86
25.70||tt ||27.73
35.87| |tt||Big
23.70||tt ||26.62
0.20~~0.28
0.25~0.33
0.28~0.38
0.30~0.41
0.33~0.46
0.46~0.61
Table 2 (inverted taper 3:1000)
Diameter
Upper deviation
「Lower deviation||tt ||—0.30
18.33||tt ||20.33
Medium
Diameter
Minimum upper deviation
Lower deviation
18.28||tt| |20.27
— 0. 04
Maximum trail
11.84||tt| |0.08
軺纹载括
M35×3
M39×3
M42× 3
M45×3
M48×3
M52×3
M55×4
M60×3
M60×4
M64×3
M64×4
M68×4
M72×4| |tt||M76×3
M76×4
M85×3
M85×4
M90×3
M90×4||tt ||M95×3
M100x3
M100×4
M110x3
M110X4
M115×3
M120×3||tt ||M120×4
M130X4
M130X6
基度直经基度中很
36||tt| |39
76|| tt||76
100||tt| |110
48.75|| tt||50.05
70.05||tt| |69.40
126.10|| tt||maximal
47.87||tt| |51.87
94.87|| tt||99.87
129.87||tt| |129.87
JB/T 64691992
35.62|| tt||38.62
51.62||tt| |55.62
99.62|| tt||109.62
很||tt| |上了店
下庆店
82.33| |tt||87.98
112.98||tt ||117.98
49.89| |tt||53.24
82.87| |tt||82.22
.97.86
107.21|| tt||112.86
上自定
0.06||tt ||0.07
下自定
mm|| tt||小很最好
44.75||tt ||46.59
— 0. 21
軺纹行
d||tt ||M135×4
M140×+
M140×6
M150×4
M150×6
M160×4
M160x6 |tt||M42
M68||tt ||M72
基度应度基度中很
135|| tt||140
maximal value
26.79||tt ||29.78
146.10| |tt||157.40
139.87||tt ||139.87
minimum value
26.59||tt| |29.56
JB/T 64691992
2||tt| |大
内容值
上凯电
下凯电
-0.38||tt| |Maximum
157:18
3（倒黔度8:1000)
minimum
0.48||tt|>分度
小很最好
— 0. 22||tt ||143.50
差值(d-d4)）
(d-dg)
L =d+3t
maximum
minimum
maximal||tt| |0.37
minimum
0. 27||h||0.31||h||0. 35
0.76||tt|>4
M160|| tt||螺分
6||tt| |6
軺纹电影
M48| |tt||M52
Maximum value|| tt||75.65
124.59||tt| |139.59
minimum value
basic diameter基度中很
72| |tt||尺
39.08||tt ||42.08
分度值
0. 30||h||0.30||h||0.30||h||0. 30
JB/T 64691992
0.68| |tt||0.72
maximal
最| |tt||小
44.51||tt ||47. 48
minimum| |tt||0.53
0.88||tt ||0.98
(d-da)
L=d+3t
maximal
（倒黔度8t1000）
上自定|| tt||—0.21
下自看
-0.63||tt ||Maximum
minimum
30.29| |tt||32.94
55.88||tt ||59.47
maximal
1.08|| tt||1.15
2. 02.|tt|| 21
下了内||tt| |-0.41
minimum
小很最好
41.60|| tt||45.60
Thread specificationWww.bzxZ.net
M150|| tt | | M160 | | tt | |85
81.10|| tt||86.10
75+65|| tt||79.65
124.59||tt| |126.10
JB/T64691992||tt| |Continued table
Upper deviation
This standard is proposed and managed by Shanghai Power Generation Equipment Complete Design Institute. Lower deviation
Maximum
145.69| | tt | tt||75.47
105-39
115.39|| tt||120.39
Diameter
Upper deviation
-0.35|| tt||—0.41
Lower deviation
Maximum small diameter
117.23| |tt||122.23
1||tt ||4
JB/T6469E1992
degree by g
880A1230| |tt||19XXA XX
halogen
X/X||tt| |t
100044
XXX,XXX
xx should
19XXA1
|tt||
105-39
上头发
下头发
-0.71| |ht||mm||ht||小很最好||ht||68.28||ht||72.28||hh||77.28||hh||82.28||hh||87.23||hh||92.23|| tt||102.23
152.23||tt| |6
JB/T6469E1992
yig||tt| |度由g
880A1230
19XXA XX
X&| |tt||XXX
100044
XXX,XXX
xx应||tt| |19XXA1
105-39
上头发
下头发
-0.71| |ht||mm||ht||小很最好||ht||68.28||ht||72.28||hh||77.28||hh||82.28||hh||87.23||hh||92.23|| tt||102.23
152.23||tt| |6
JB/T6469E1992
yig||tt| |度由g
880A1230
19XXA XX
X&| |tt||XXX
100044
XXX,XXX
xx应||tt| |19XXA1
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