:
" "
260501.65
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2012
充.5 |
1. 6 1. 1. 6 |
2. 7 3. .........9 |
4. .14 5. 腅.14 5.1 腅.35 |
充...41 42 |
.
, - : , , , . .
80- . . 80- XIX ., , , - . , . .
1881 . .. . . .. , .. , .. . , , . . . , . , , ., .. , .. , .. . - , .
. , . .
|
|
, .
.
.1.1 , .
:
) £350 , ; ) >350 , , , .
. , , , . ( £350) 1 , (10...15):
1³ 2+(10...15).
:
1 - 2³100.
( >350) .
.
1.1 ,
, | - - | . | ||||||||
. | . | |||||||||
HRC | s | s | s lim b | sF lim b | NHO | |||||
1050-88 | . . . | 170-217 192-240 - | - - 40-50 | 107 107 6. 107 |
1.1
40X 4543-71 | . . | 230-260 - | - 40-50 | 12.106 6. 107 | |||||
40X 4543-71 | . . | 230-300 - | - 48-50 | 15.106 8. 107 | |||||
40X 4543-71 | . . | 300-320 - | - 48-54 | 26.106 8. 107 | |||||
20X 4543-71 | - | - | 56-63 | 12. 107 | |||||
25 4543-71 | - | - | 58-63 | 12. 107 | |||||
35 977-88 | . | 140-180 | - | 107 | |||||
55 877-88 | . | 170-217 | - | 107 |
|
|
, N N. : N = 60 ntc,
n , , -1;
t ;
c ( , ).
N<N0.
N 1.1. NFO = 4×106 .
: ,
s lim b (. 1.1);
S S=1,1 , ( ); S = 1,2 , ( );
HL . HL = 1;
.
, HL>2,4, HL = 2,4.
( )
, [s]1
[s]2. , ( 100 ), [s]1 [s]2, 1,25[s]2, 1,15 [s]2 :
:
,
sF lim b ( I.I);
SF - ; SF = 1,7... 2,2 ;
F , (, );
F = 1 ; F = 0,8...0,7 ( >350 );
FL .
£350 ;
FL = 1.
NHE NFE
, .
.
,
m = 6 ;
m = 9 > 350 ;
1 , ;
i ;
i, ni, ti , , i- .
NHE NFE (, ) . , 5×104.