6.2 - 6.4 , . ֳ , , .
, , , [2] , , . . .
ᒺ : u, d, D, D L, D, B S , V, R. . IJ [12], , .
L , ᒺ [4], . L , ᒺ . u, d, D, D, L, D, B, S, V R , , .
, , , . , Lebus .
D L , :
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d u, l z ;
;
;
.
, . D , , . L . , . ³ (|D| = |L|= ):
D = [15,6 + 0,17×()0,5]2, (6.13)
L = 923 + 3,59×10-5× 2, (6.14)
(6.13, 6.14) || = :
(6.13, 6.14) ..6 ( ), D, L . D, L, (6.13, 6.14), 2.
ij d u, D /d, D - . ᒺ u , , , d = f() (6.15), |d| = :
d = 16.2 + 0,3×()0,5, (6.15)
(6.15) ..7 ( ), [1, 2]. ij d , [13] - (API St.9A). . d, (6.15) , 6.1.
u , , , , , , , . , . , , , . . , u , u = f() (6.16):
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u = 4,14×ln() 21,7, (6.16)
(6.16) ..8 ( ), , [1, 2]. ..8 u = item, 200%, , . u , (6.16), 6.1.
ij D , , ᒺ . D , , , . , , , , , () . .
. , D , 17326-71, .
, D = f() (6.17, 6.18) (|D| = ):
D = 230,7ln() 785, (6.17)
D = (19,4 + 0,21()0,5)2. (6.18)
(6.17, 6.18) ..9 ( ), D, , .6.1.
D D d. 6.1, , : 25,4≤D /d ≤30,3 30,4 ≤ D /d ≤ 33,4 ; 16,8 ≤ D /d ≤ 19,8 . , , , [13], , , power-steel.
. - , 330. : ( 400 ) , . . , . D, B S , (6.19 - 6.21) (|D| = =|B| = , |S| = 2):
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D = 166×ln () - 96,3, (6.19);
B = 326,1 - 54360 / , (6.20);
S = 0,608×ln () - 2,57, (6.21)
(6.19 - 6.21) ..10, .11, D, B S 6.1.
( SR) ( DR) 460 . 璺 -, . .
6.1 ,
1 u | |||||||||
2 ij d, | 26*) | 29*) | 29*) | ||||||
3 ij D, | |||||||||
4 ij D, | |||||||||
5 ij D, | |||||||||
6 L, | |||||||||
7 ij D, | |||||||||
8 B, | |||||||||
9 S, 2 | 1,30 | 1,50 | 1,60 | 1,80 | 1,90 | 2,00 | 2,05 | 2,20 | 2,35 |
. d, [13], *).
, , 6.1 , , .
ϳ , , , . , - . , . V= 0,10 ÷ 0,20 / [1], [2] . V [1] 1,65 £ V £ 2,0 /, V = 1,4 /. , 12,2 £ R = V / V £ 18,5.
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1470 , :
114,3 ( ) - L £ 2850 ;
N = 550 N = 750 ;
H = 35 ;
u = 8;
d = 28 ;
: - D = 900 , - D = 750 ;
D = 490 , L = 1000 ;
D = 1115 ; - B = 290 , S = =1,85 2, ≈ 330, ;
5£ Zv £ 6, R ≥ 14;
£ 58100 £ 46000 ;
: 350 580 . US $ (. ).
, . , [8], , ᒺ . - , :
~ 400 US $;
~ 160 US $;
~ 970 US $;
~ 6 US $.
, 50-100%.
7 . ,
, , ( ):
7.1.1 , . .
7.1.2 - - , : - , - , , - .
7.1.3 ᒺ , , , - - . .
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7.1.4 [2] (.3.1), , .
7.1.5 , , , , , .
7.1.6 ³ (6.1 - 6.21) . , , , - , - , .
7.1.7 , (..1-.5, ), . , , . , .
7.1.8 , , , - , , - . , .
: drive-in back-in , . drive-in .