1= D C d E24 ^ (CNC- TME 40)
O (#) . 8 – 67 5 ( 1S%
.> 9 6 #. (Ft) 8 –
6 #. aV D 69 (Keystlre 9257BA)
.D ( 8 – 67 5 * (1) (; 9

PS = Ft (1)
A
C
(N/mm2)8 – 67 5 Ps (; (?
;* :; Ac (N) Ft (KJ/mm3) ( – . (mm2) (.= &R z- 6 K / CM3 (k20) ? L 9 6 #.
12-PCLNR ) L 6S (TiN,Ti(N,C) r K 9< – . ? (20*20 8 $- @ ? (> ? s H. . 1 8
#O 9< ( 9 (wz – 9 ? M
9 D69 1S% >A N . 6 #. (%
I> 9 6 . 6 ? M $;! :;
(.= D R Surtronic 25 ] Taylor Hobson K 9< C d 1S% . / 4 ] % .
. @ 2 6< 1 *

3 12
; (9 : ( ( 34# 56 ( 789
@ L ? ($;! a>% +,- 2 1 & R
@ 2 8 – 67 5 1 K L=
67 5 6 2 (? ( D @ . >
? ( 9 -K (ADI) A 8 –
& ) . (42CrMo4) B = 6
@ &R z- (). ( @ – 1 H (%
R R ] (d . 1 L>- ( 1 >. <
– NS (2/ 1 1)
($;! :; 9 8 – 67 5 ) % 4 ./ . ( ?

./ 0, – #’%
1S% M $;! ( ADI @ A ( S- g>
9.? – D (.H 1? @ A ?
1? .1= D C d D (.H M @
40 .2D R2 @ A O 60 9 s[ (S- 1S%
/ a ? = >- 1 *) 6 ? B = ( ! O &R G) 4 a ( ( 9 5 )< & . 6 #.
@) = O 99/9 X 4 (% L ) .R)
( . 9 a/ .1= D C d Fe-Mo 65-70%
= ( ( 9( % & (> S Z ? –
& – / s[ .H 9 K / Fe-Si 75% N
? M >AN . C d 1476 °C
N= 5 )< 9 6 #. w 8 ( 9
C d 6 C DK / (- 5.5% Fe-Si-Mg L> >
E s[ Z ? – @ GH2 .1= D
. . 3 ;! ( . .RV .= R) / ( Z) ! s[ .H 9 6 #. . 3/5 1 H x> 6 . 9x> 9 a/ ( S- GH2 @< Z ? – 9 A y >z
J 6< 1 @ A Z ? – .D
-C (? 1 6 D {L% ASTM A897.
. 1 ? 6 D -Z >
( – @? V . < g> >AN
C 6 ? (* ! 60 M ( (875 ± 3 °C ) 1 +
(50%NaCl –50%Na2CO3) Z ? – E
E C 6 ? ( O =T 6 (. >. <
(40%NaNO2–40%NaNO3–20%KNO3) . V . < (* ! 60 M ( (375 ± 3°C )
@ A D(.H ( Z ? – 2 ]%
. @ 2 ADI 5 )< B = ( 9 6 < >AN
EN 10083-1 . J ( 42CrMo4 – M 6 9 6 < 17 mm ;!
Y W 6 &R z- -N ?
.[7] D 8 – 67 5 * K ? f ( ~

?4+ ( @ ( 34# 56 ( 789 M $;! :; 9 ? ($;! a>% +,- 5 &R
@ . @ 2 B = A 6 ? M $;! :; 9 * 6 2 (? ( D 9 9 -N? (ADI) A 6 ? .4 9 (42CrMo4) B = (
/ 1 >. < 1 = 9 ? – 6 V . < R2 @ A N @ A 1 = (? ( (% – 1 ?
1 = 6 & N D 1H + 1
@ A ? 9 &O :; (? Z
6/ j ! & ) ( >AN .[9] – Y O
E d @ A ? .H ?
? 9 $ ? ($;! :; 1H ( B ( < 6 ? :; L 9< :; J –
>? ? ($;! L k .2 &W= :; :; 1 # ? S Z% – 1H ( B (d . . 6 ?

?4+ ( @ ( < ( “=(+ ( 789
1 K L= 5 &R J
. 1 + *- :; 9 ADI @ A ?
Z @L @ N? 1 g ( 6 @ d @ A L k R;O
(? ( D ( .1 6 R- > < = ;*>
+,- 1 K L= 6 Z & ($;! – L k R;O Z K ? 2A – E L & ) ( (d . (. 6 -L ? @< E ~- j #- ( $! j #- @
.[10] (. :; 9 >A + 1 :; 9 1 +,- 5 &R >AN
( D @ . @ 2 42CrMo4 B = M $;!
:; 9 1 K L= 6 2 (? K L= + :; 9 K ? & ) . K ?
K L= (? ( % – @ – >A 1
>A 1 ^ – ADI @ A (TRIP) :; ADI @ A ? C > (? 1#D ] + % ? / 1 >. < ? ($;! 6 & – 1 L>- ( $ M O ( ?
? ($;! $ ; .H K L= Z (
9 .[4]D 8 – 67 5 K L= Z%
2= K L= Z 8 K L=
K L= Z% 6D ? ($;! L k .2 &W=
& (? ( D ( 6 &R z- @L
D 8 – 67 5 K L= Z } U +,-
.[7]

; (9 : ( ( < ( “=(+ ( 789 67 5 1 +,- 4 3 & R
@ DD * A B = ( 8 –
&R J . > @ 2 2 / 1
(Ps) 8 – 67 5 1 K L=
& ) . K ? (A B =) ? ($;! a>%
1 H (? ? @ @ – ( D ( ~
(.= K ? 8 ( #O 1 1 K L= -N? L ( ) &R z- ( Nd (d .
K ? 6 &R z- = W 5 *
1 K L= (? C
6 9 K L= f 6 – N? N ! :; k R;O = W 5 * K ? (d . ?
.[8 7] D

; (9 : ( ( (’ > “=(+ ( 789 > @ 2 4 3 &R (? ( D @
K ? 8 – 67 5 * 2 / 1 K L= 1 H 2 / l $. 8 – @ A . .= D g [7]1 (.= &R z- 6
&R z- L :; ( E L ( B (?
(% :; 9 – ( B ( 1 -K 5 ( D ( 2 / l K L= [) 5 4
B = ADI @ A R> 1 ! K 7/ 9 8 – 67 5 * ) 9 42CrMo4
I . 1= D ! 6 ? :;
:< 1 9 NS
ADI @ A ? 8 – 67 5 * -1
. 42CrMo4 B = ( 9 -K
M $;! R- > < = 1 K L= -2
67 5 (A B = M $;!) @ DD a>%
. K ? 8 2 / 1 K L= ? ($;! a>% 9 &*. -3
B = M $;! 8 – 67 5 *
. ) L ADI @ A 6 ? M $;! :; 9 -4 . 42CrMo4 B = ( 9 – N? :; 9 >A +,- 1 K L= -5 (? ) (. ADI A 6 R> M $;!
= M $;! :; 9 1 K L=
. K ? 42CrMo4

6 ’7+
1 9 (? > C9B 4 () * @ D >
D( .H 1? >S >= KH C . &>/
@< (O R 1S% L- [email protected] 9.? –
. >>? LV K 7/ C d

Refrences
Standard Test Method for Measurement of
Fatigue Crack Growth Rates, ASTM (E 647-
00), 2001
K.H.W. Seah, and S.C. Sharma,
“Machinability of Alloyed Austempered
Ductile Iron”, International Journal of Machine Tools and Manufacturing, 35 (10), pp.14751479, 1995.
F. Klocke, and C. Klpper, “Machinability Characteristics of Austempered Ductile Iron(ADI) “, In Proceedings of the 2002 Word Conference on ADI for Casting Producers, Suppliers and Design Engineers, Ductile Iron
6 [email protected]< R . T/ &R z- 1
6 ? :; 9< :; k R;O
K L= + 6 N ! :; k R;O >AN k R;O K ? . K ? M (%
.[7] – N? :; 9 6 % – 1 6

?4+ ( @ ( (’ > “=(+ ( 789 M $;! :; 9 2 / 1 +,- 6 &R &R J . @ 2 6 ? 6 ? :; 9 2 / * K L= i – ( @ – ( ~ & ) . K L= ^ – :; 9 ^. L 2 / * N *.
.1 6 (‘ (2) (; (? 1

Ra =

0.0321 f 2 (2) rε rє L 2 / * f :; 9 Ra @< (? 6 2 (? ( D @ .[10] N ! k j $
L 2 / * C @ – :; 9 D
. >? z- M ( @< z- 6 Z >. l @ 9 1 S 6 ? (; .= D g
. K L= ? ($;! :; 9 * L 2 /

Society and American Foundry Society, USA,
2002
B. Avishan, S. Yazdani, and V. Jalali ,”The Influence of Depth of Cut on the Machinability of on Alloyed Austempered Ductile Iron”, Materials Science and Engineering, A (523), pp. 93-98, 2009
M. Kamruzzaman, N. R Dhar, “The
Influence of High pressure Coolant on Temperature Tool Wear and Surface Finish in
Turning 17CrNiMo6 and 42CrMo4 Steels”,
Journal of Engineering and Applied Sciences
Vol. 4 (6), pp. 93-103, 2009
[email protected] D.J. .% C [email protected] $ .M.C -6 V . < R2 @ A R R D7 S”! ( 2 “. 4 C R . ? 1 ! K L= 1S% 8- E. M. Trent and P. K. Wright, “Metal cutting”, 4rth ed., Butterworth- Heinemann, Boston, 2000.
M 2. L? ( % – A .H M $;! U= . .C -9 90S 22-11X 3 6 6 2 M 2.> L R> ] O =9 .C -7 1384 C SA A ? .$>O
1373 ] A B = 1$>O
? U= . .C ‘ 4 . .C -10
.1378 ] A 2 2 L? ( % – L

/ % ,
83888179431

<’@, <&& [email protected], E * -1 C
( 5 .H ] y 9 N- C R . 22? C R . ( (J) (BHN) (%) (MPa) (MPa)
83888175328

282 97 7/95 572 925 ADI
83888175327

74744325822

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اینجا کلیک کنید

245 37 10/3 736 1057 42CrMo4

P Mo Ni Cu Mn Mg Si C O >
0/01 0/07 0/65 0/72 0/25 0/05 2/54 3/72 O
42CrMo4 <9 (J K= / 0 < G(9 – 3 C
P Mo Cr Mn S Si C O >
0/03 0/22 1/1 0/75 0/03 0/25 0/42 O
ADI $ % (I*H < G(9 -2 C

F @, M ( -4 C
F
t
(N) Ra(µm)

@A
B =

@ A

B=

F

t

(N) Ra(µm)


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