??п????????
????????????????в??????
1?????=3.14[(D/2)*2-(d/2)*2]x1000mmx7.8x10-6 kg/mm*3x5.7?/kg
D???????? d ????????
?????п?????
?????п?????
|
?????? |
?? |
??? |
??п????????
???????????? |
|
MM |
MM |
MM |
?????? |
????? |
|
6 |
10.0 |
2 |
1.064 |
1.059 |
|
8 |
13.5 |
2.75 |
1.056 |
1.046 |
|
10 |
17.0 |
3.50 |
1.056 |
1.046 |
|
15 |
21.3 |
3.15 |
1.047 |
1.039 |
|
20 |
26.8 |
3.40 |
1.046 |
1.039 |
|
25 |
33.5 |
4.25 |
1.039 |
1.032 |
|
32 |
42.3 |
5.15 |
1.039 |
1.032 |
|
40 |
48.0 |
4.00 |
1.036 |
1.030 |
|
50 |
60.0 |
5.00 |
1.036 |
1.028 |
|
65 |
75.5 |
5.25 |
1.034 |
1.028 |
|
80 |
88.5 |
4.25 |
1.032 |
1.027 |
|
100 |
114.0 |
7.00 |
1.032 |
1.026 |
|
125 |
140.0 |
7.50 |
1.028 |
1.023 |
|
150 |
165.0 |
7.50 |
1.028 |
1.023 |
|
??? |
W=C*[0.02466*(D-S)*S] |
|
??? |
W--??п???????????kg/m |
|
C--??п???????????????????? |
|
D--????????? |
|
S--????????? |
??п???????????
??п????????????[(??-???)*???]*0.02466=kg/??(????????)
?????п????1.2???????3.13kg/m??1.5???????3.84kg/m??
??????п????1.2???????3.78/m??1.5???????4.58kg/m??
??п???????????
??????mm 2.0??2.5??2.8??3.2??3.5??3.8??4.0??4.5
???c 1.064??1.051??1.045??1.040??1.036??1.034??1.032??1.028
??????????Q215A??Q215B??Q235A??Q235B
????????/Mpa??D10.2-168.3mm?3Mpa??D177.8-323.9mm?5Mpa
?????λ???
?? ? ? ?? 
