Kv | . | ||||||
σ | σ0,2 | δ | |||||
% | |||||||
121810 | 1050-1100 | 0,85 | |||||
121794 | 1150 |
16. . , , 800. ( ), . .
-8, -11, -15, -4, -6, -8, -11, -15. 170.
17
-4 | -6 | -8 | -11 | -15 | |
σ, | |||||
HRA | 89,5 | 88,5 | 87,5 |
17. , , , , . .
, 15 30% .
, , ( 50), .9. 1,0-1,6.
9
σ | σ0,2 | δ | ||
% | ||||
1021 | ||||
10 | , -5 | |||
15 | ||||
162 | ||||
17 |
18. . , 62 40; 10-1 10-2-3. 7.
.10. ≈ 6, ≈ 20.
10
σ | σ0,2 | δ | KCU | ||
% | /2 | ||||
62 | 1,4 | ||||
401 | 0,3 | ||||
10-1 | 0,09 | ||||
10-2-3 | 0,1 |
|
|
19 ; , .
, , 40, 40 . (. . 4).
; 4092, 40102 . . 40102 1030 720-780. 650. 40102: = 100 , = 40 .
, , 4514142. 1100-1150 700-750 15-25 ; 650. : = 130 , = 40 .
4092, 40102 2,0-3,5; 4014142 10,5. Kv=0,7; Kv=0,2.
20. . .
(=280-330 ), (δ=33-45%) 05, 08, 10 . , 650-690. 05, 08, 10; 08. - . 08 08.
, , . , , . 1,0-1,2.
68.
, , ( , , ; , , ) , 2, 6, 1, 16 5, 5-1. ( ).
: =130 ; 0,2=50; -1=55 ; δ=20%; 300; 2: =190 ; 0,2=100 ; -1=125 ; δ=23%; 450.
7-15; 57.
1. .1 .
2. . 1 , , .
|
|
3. , , , .
4. - . : t , τ, τ, τ. τ τ = 0,08/t δ, - τ = 0,09/t δ; t - , δ . , , τ = 2,5 + 0,5 δ, ; :
t< 300 | τ =120 + δ, |
t= 300-400 | τ =20 + δ, |
t= 500-650 | τ =10+ δ, |
τ v. v=120/, τ=t/120, . 10 : v=1/, v=25/, v=150/. τ=t δ/v 10.
, τ=h/0,1; ; h- ; τ=h/0,01; .
5. .
1. - Æ304 , m=16, z=19 [σ] = 480 , HRC³55.
- . , . , .
- , , . - , , , ; , , . , .
- . 1 2 . 1. [σ] = 480 , [σ] = /2,4; = 2,4*480 = 1152 . . 2 4 =1152 1824 383; HRC³55 1824 383.
( -1), , , ; 1824 (Kv=1,2).
- 1824 : , , , , , () . . - 383 : , ( ), , () . , , , . , 3-4 , .
, , .
|
|
, 383 , 1824 , .
, - 1824. - 1824 . 3.
2,0 . 2,0 , (m=16) . t = 940; τ = 0,09*940*304 = =25718=429 , τ =2,0/0,1=20= 1200 , τ = 940*304/1 / *10 = 28576 = 476 .
650 ; τ = 0,09*650*304 = 17784 c = 296 ; τ = 10 + 304 = 314 ; τ=650*304/1 / *10=19760=329 . 800 ; τ=0,09*800*304=21888=365 ; τ = 2,5 + 0,5*304=155 ; τ=800*304/25 / *10=.973=16 . 200 ; τ=0,09*200*304=5472=91 ; τ =120+304=424 ; τ= 200 *304/1 / *10=6080=101 . - .1.
- (. . 2): =1150 ; 0,2=850; -1=460 ; δ=12%; y=50%; 4200 HB, HRC 58-62. , ; .
t, | ||||||||||||||||||||||||||||||
τ, |
.1. - .
2. . . 20 .1.
: , , . : , , , .
, . . , . , . , . 2. 2 , . . . 2: =190 ; 0,2=100 ; -1=125 ; δ=23%; 450. α- .
|
|
1. 1. Æ100 [σ] = 250 , HRC³50.
2. .
2. 1. Æ100 [σ] = 400 .
2. , v50/ p15 .
3. 1. 80 [σ] = 220 , HRC³50.
2. , v15/ p25 .
4. 1. Æ80 [σ] = 250 .
2. , v15/ p20 .
5. 1. Æ80 [σ] = 250 .
2. ; HRC³55.
6. 1. Æ100 [σ] = 250 .
2. , .
7. 1. Æ60 [σ] = 250 .
2. .
8. 1. [σ] = 250 , HRC³50.
2. .
9. 1. - Æ176 , m=8, z=22 [σ] = 320 , HRC³50.
2. .
10. 1. Æ40 [σ] = 350 .
2. , , [σ] = 350 .
11. 1. Æ88 , m=8, z=11 [σ] = 320 , HRC³50.
2. .
12. 1. Æ100 , m=9, [σ] = 340 , HRC³50.
2. .
13. 1. Æ60 , m=2, [σ] = 400 , HRC³50.
2. [σ] = 75 ,
14. 1. [σ] = 120 , f£0,008.
2. .
15. 1. [σ] = 80 , f=0,008-0,016.
2. .
16. 1. Æ;40 [σ] = 450 .
2. , , [σ] = 200 .
17. 1. Æ70 [σ] = 450 .
2. 25 [σ] = 500 .
18. 1. 8 [σ] = 400 .
2. , .
19. 1. Æ12 [σ] = 400 .
2. .
20. 1. [σ] = 400 .
2. .
21. 1. [σ] = 190 .
2. .
22. 1. [σ] = 160 .
2. .
23. 1. [σ] = 500 40 HRC.
2. .
24. 1. Æ80 , m=1, z=80 [σ] = 400 , HRC³45.
2. .
25. 1. Æ304 , m=16, z=19 [σ] = 400 , HRC³55.
2. .