:
) ;
) .
(n 1 < 1 000 / ). (n 1 
1 000 /) . .
()
Z 1 = 1, 2, 4. Z 1 = 1 u 
30; Z 1 = 2 u 
1530; Z 1= 4 u = 815.
Z 2 = Z 1 ∙ u. (5.1)
Z 2 .
31 84.
. Vs (/):
Vs= 4,5 ∙ 10-4 ∙ n 1 ∙ 
, (5.2)
n 1 , /; T 2 , ∙.
, .
, , , , .
, , . 5.1.
5.1
 ,
|
 ,
| |||
| 40 40 | 4854 HRC | 1 600 | 1 400 | |
| 20X 12 25 | 5663 HRC | 1 150 | ||
| 38 | 5767 HRC | 1 050 |
Vs .
(Vs < 2 /c), 15 21.
Vs = 25 / 94 94, , .
(Vs > 5 /c) - 0101, 01011, . , , , , .
|
|
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