, | σb, /2 | στ, /2 | , | ||
100 | |||||
100-300 | 152-207 | ||||
300-350 | |||||
100 | |||||
100-300 | 167-217 | ||||
300-500 | |||||
90 | 207-250 | ||||
90-120 | 194-222 | ||||
130-150 | 180-207 | ||||
150 | 190-229 | ||||
50 | 150-400 | ||||
100 | 241-285 | ||||
100-200 | |||||
60 | |||||
30 | 100-160 | 215-229 | |||
160-250 | |||||
140 | |||||
35 | 140-300 | 235-280 | |||
60 | |||||
60-100 | 74 0 | 190-241 | |||
100-200 | |||||
35 | 200 | 220-260 |
, (36)
Tmax , (. );
i ti;
w , /;
, ;
t , .
t = 300×8×n×k, (37)
n , ; k .
NHE > NHO, HL=1.
4 - σlim b V=5 /, R
σlim b, | ||
< 350 | 2+70 | |
R=HRC 40...50 | 18R+150 | |
R=HRC 40...50 | 17R+200 | |
R=HRC 54...64 | 23R | |
R=HRC 550...750 |
3. Hb, , 5.
5 Hb
£350 | >350 | |
1,0...1,15 | 1,05...1,25 | |
1,10...1,25 | 1,15...1,35 | |
1,25...1,35 | 1,25...1,45 |
4. ( b, w ) 0,315...0,4, 0,25;0,315, yba=0,4;0,5 yba=0,1;0,2. yba : 0,1; 0,125; 1,160; 0,200; 0,250; 0,315; 0,400; 0,500; 0,630; 0,800; 1,0; 1,25.
|
|
5. :
, × (38)
6. : . (39)
7. , :
, (40)
, = 495 .
aw , 229-75:
1- ... 40; 50; 63; 80; 100; 125; 160; 200; 250; 315; 400;
2- ... 71; 90; 112; 140; 180; 225; 280; 355; 450.
: 1- .
8. :
, .
310-76. 1,5 .
m 310-76:
1- ... 1,0; 1,25; 1,5; 2; 2,5; 3; 4; 5; 6;
2- ... 1,125; 1,375; 1,75; 2,25; 2,75; 3,5; 4,5; 5,5.
: 1- .
9. : , (41)
, (42)
, (43)
Zmin=20...30, Zmin=17...24.
10. :
, (44)
11. :
, / (45)
12. :
b=yba×aw, (46)
13. :
, (47)
14. :
, (48)
Z , Z=1,76;
Z , , Z=275;
Zε , Zε =0,9;
ωHt , /;
d1 , .
, / (49)
Ft , ;
KHβ , ;
KHV .
d1=m×Z1, (50)
, (51)
7.
15. :
dw1=d1=m×Z,
dw2=d2=m×Z2,
da1=d1+2m, (52)
da2=d2+2m, (53)
16. , :
, ;
, ; aw=20, (54)
17. :
, (55)
YF , , 6;
[sF] , .
6 YF
Z | 100 | ||||||||
YF | 4,28 | 4,09 | 3,9 | 3,8 | 3,7 | 3,66 | 3,62 | 3,61 | 3,6 |
7 ,
V, / ( ) | |||
, | |||
6 () | , , | ||
7 () | |||
8 ( ) | , | ||
9 ( ) | 3,5 |
|
|
, (56)
sFlimb , 10, , ;
SF , SF =1,75;
KFC=1 ; KFC=0,8...0,7 .
FL £ 350, :
1 £ FL £ 2. (57)
8 - Hb
ybd | ||||||
£ 350 | >350 | |||||
0,4 | 1,15 | 1,04 | 1,00 | 1,33 | 1,08 | 1,02 |
0,6 | 1,24 | 1,06 | 1,02 | 1,50 | 1,14 | 1,04 |
0,8 | 1,30 | 1,08 | 1,03 | 1,21 | 1,06 | |
1,0 | 1,11 | 1,04 | 1,29 | 1,09 | ||
1,2 | 1,15 | 1,05 | 1,36 | 1,12 | ||
1,4 | 1,18 | 1,07 | 1,16 | |||
1,6 | 1,22 | 1,09 | 1,21 | |||
1,8 | 1,25 | 1,11 | ||||
2,0 | 1,30 | 1,14 |
1 ;
2 ;
3 .
9 , Hb FV
V, / | ||||||||
a | 1,03 | 1,06 | 1,12 | 1,17 | 1,23 | 1,28 | ||
HV | 1,01 | 1,02 | 1,03 | 1,04 | 1,06 | 1,07 | ||
1,06 | 1,13 | 1,26 | 1,40 | 1,53 | 1,67 | |||
KFV | 1,02 | 1,05 | 1,10 | 1,15 | 1,20 | 1,25 | ||
1,02 | 1,04 | 1,07 | 1,10 | 1,15 | 1,18 | |||
HV | 1,00 | 1,00 | 1,02 | 1,02 | 1,03 | 1,04 | ||
1,02 | 1,04 | 1,08 | 1,11 | 1,14 | 1,17 | |||
KFV | 1,01 | 1,02 | 1,03 | 1,04 | 1,06 | 1,07 | ||
1,04 | 1,07 | 1,14 | 1,21 | 1,29 | 1,36 | |||
HV | 1,02 | 1,03 | 1,05 | 1,06 | 1,07 | 1,08 | ||
1,08 | 1,1 6 | 1,33 | 1,50 | 1,67 | 1,80 |
9
KFV | 1,03 | 1,06 | 1,11 | 1,16 | 1,22 | 1,27 | ||
1,03 | 1,05 | 1,09 | 1,14 | 1,19 | 1,24 | |||
HV | 1,00 | 1,01 | 1,02 | 1,03 | 1,03 | 1,04 | ||
1,03 | 1,05 | 1,09 | 1,13 | 1,17 | 1,22 | |||
KFV | 1,01 | 1,02 | 1,03 | 1,05 | 1,07 | 1,08 | ||
1,04 | 1,08 | 1,16 | 1,24 | 1,32 | 1,40 | |||
HV | 1,01 | 1,02 | 1,04 | 1,06 | 1,07 | 1,08 | ||
1,10 | 1,20 | 1,38 | 1,58 | 1,78 | 1,96 | |||
KFV | 1,03 | 1,06 | 1,11 | 1,17 | 1,23 | 1,29 | ||
1,03 | 1,06 | 1,10 | 1,16 | 1,22 | 1,26 | |||
HV | 1,01 | 1,01 | 1,02 | 1,03 | 1,04 | 1,05 | ||
1,04 | 1,06 | 1,12 | 1,16 | 1,21 | 1,26 | |||
KFV | 1,01 | 1,02 | 1,03 | 1,05 | 1,07 | 1,08 | ||
1,05 | 1,10 | 1,20 | 1,30 | 1,40 | 1,50 | |||
HV | 1,01 | 1,03 | 1,05 | 1,07 | 1,09 | 1,12 | ||
1,13 | 1,28 | 1,50 | 1,77 | 1,98 | 2,25 | |||
KFV | 1,04 | 1,07 | 1,14 | 1,21 | 1,28 | 1,35 | ||
1,04 | 1,07 | 1,13 | 1,20 | 1,26 | 1,32 | |||
HV | 1,01 | 1,01 | 1,02 | 1,03 | 1,04 | 1,05 | ||
1,04 | 1,07 | 1,14 | 1,21 | 1,27 | 1,34 | |||
KFV | 1,01 | 1,02 | 1,04 | 1,06 | 1,08 | 1,09 |
:
1.
1 £ 350, 2 £ 350
1 £ HRC 45, 2 £ 350
1 ³ HRC 45, 2 ³ HRC 45
2. , .
10 - sFlim b
- | sFlim b, | |||
180 300 | (, 40, 45, 40, 40) | 1,8× | ||
RC 45 45 . | (, 40, 40, 38 ) | 550...600 | ||
HRC 55 75 . | HRC 23 42 . | (, 40, 40, 38 ) | 12×HRC+300 |
|
|
11 - Fb
ybd | ||||||||
£ 350 | > 350 | |||||||
0,2 | 1,0 | 1,04 | 1,18 | 1,71 | 1,03 | 1,05 | 1,32 | 1,20 |
0,4 | 1,03 | 1,07 | 1,37 | 1,21 | 1,07 | 1,10 | 1,70 | 1,45 |
0,6 | 1,05 | 1,12 | 1,62 | 1,40 | 1,09 | 1,18 | 1,72 | |
0,8 | 1,08 | 1,17 | 1,59 | 1,13 | 1,28 | |||
1,0 | 1,10 | 1,23 | 1,20 | 1,40 | ||||
1,2 | 1,13 | 1,30 | 1,30 | 1,53 | ||||
1,4 | 1,19 | 1,38 | 1,40 | |||||
1,6 | 1,25 | 1,45 | ||||||
1,8 | 1,32 | 1,53 |
: 1 , 2 , 3 , 4 , ,
> 350 .
, (58)
NFO , 4×106.
NFE :
, (59)
, (60)
m=6 , , m=9 ;
, ;
max (. );
i ti (. );
t , .
NFE > NFO, FL=1;
wFt ,
, / (61)
Fb , ( 11);
FV 9.