.
, (, ) . . , ; , , . ( 200) (HRC > 45) . .
. , .
[3] 4.1.1. [3] 4.1.2.
40, , s = 750 ,
s = 520 230.
40, ,
s=650 , s = 490 , 180.
, (2.17)
, = 2 + 70, [1, . 3.2];
L , KHL = 1;
[SH] , [SH] = 1,11,2.
: ;
: .
.
, (2.18)
, = 43;[1].32
U , U = 4.
Hb , , KHb = 1,15 [1, . 3.1];
yba , yba = 0,3 .
= 160 . [3, . 4.2.3]
(2.19)
m = 2 . [3, . 4.2.2]
b = 14.
. (2.20)
z1 = 31.
. (2.21)
z2 =148.
(2.22)
.
; (2.23)
. (2.24)
; (2.25)
. (2.26)
|
|
; (2.27)
. (2.28)
. (2.29)
. (2.30)
. (2.31)
/. (2.32)
8- .
, (2.33)
KHa , ,
KHa = 1,09 [1, . 3.4];
KHb , , , KHb = 1,06 [1, . 3.5];
KHv , KHv = 1,0. [1, . 3.6]
.
(2.34)
.
; (2.35)
; (2.36)
. (2.37)
, (2.38)
F ;
yF , ;
yb , - , ;
KFa , , KFa = 0,92.
, (2.39)
KFb , KFb = 1,12 [1, . 3.7];
KFv , KFv = 1,12 [1, . 3.8].
.
yF1 = 3,66 [1];
yF2 = 3,60 [1].
yb
. (2.40)
(2.41)
;
[SF] .
[1, . 3.9]
; (2.42)
. (2.43)
, (2.44)
, , [1, . 3.9];
, ; = 1,0.
.
;
.
;
.
, . 2.
.
.
, , . () (2 ).
:
P2 = 4,906 ;
2 = 260,7×;
n2 = 179,8 /;
n3= 62,1 /;
U = 2,895;
.
, (2.45)
z1 ;
[p] , , [p] = 17 , [1, . 7.18];
m , m = 1;
, .
. (2.46)
z1 = 25
, (2.47)
, k = 1,2 [3 .3.3.2];
ka , , ka = 1 [3 .3.3.3];
|
|
k , , k = 1,25 [3 .3.3.5];
k , , k = 1,25 [3 .3.3.4];
k , , k = 1,0 [3 .3.3.6];
k , , k = 1,25 [3 .3.3.8].
.
.
t = 38,1 [1, . 7.18].
.
/ / [1, . 7.17].
.
. (2.48)
, (2.49)
Ft ;
, = 788 2, [1, . 7.16].
, (2.50)
v .
/.
.
.
, (2.51)
;
;
.
(2.52)
z2 = 72.
.
.
.
Lt = 118.
(2.53)
0,4%
(2.54)
, (2.55)
. (2.56)
, (2.57)
, (2.58)
d , d = 11,12 , [1, . 7.16].
,
.
,
Ft = 1721 ;
, (2.59)
q 1 , q = 11 /, [1, . 7.16].
.
, (2.60)
kf , , kf = 1,5 [1].
.
. (2.61)
, (2.62)
Q , Q = 254000 , [1, . 1.16],
k , k = 1,2, [1].
[1, . 7.19].
, .