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The material we are seeking is Pearlitic CrMo cast steel to the following specification.
3 c9 s& i. P- l" B3 L4 k0 b7 I
" B3 m2 N* S3 | `/ p) r%C 0.6 ~ 0.8
& j; b. U$ l( Q* H/ g i, C- J6 E%Si 0.75 max
% ^5 l) E8 X) T% ?% P, {%P 0.05 max- o+ R( u. s, Y, O) ^6 E- c. J) s: A( S$ W
%S 0.03 max
" h. b3 D) H9 e0 M%Ni 0.3 max
. I+ { d" I" @7 }%Cr 2.0 ~ 2.4
1 V4 S# j5 l0 G* [8 P; A* s& j2 s6 d%Mo 0.2 ~ 0.49 P' ]5 `& ^5 J' G0 u! [! K" {
%Cu 0.25 max
* r' f; B5 i' {3 h/ t, D7 O J%Al 0.05 max* S! ~9 {8 | n: ?, O. O6 C
%Fe balance
7 ^- W" ?7 ~; B8 x+ |: m& _( @, k& o1 {
Condition is normalised and tempered.1 y7 \2 W2 D. Y9 g9 u$ ~
Hardness range is 33~42 HRC with the target 37 HRC., A4 @' ]/ x$ p9 l: n+ W& h
% e: N; U0 s8 K8 UCastings will be generally in the 15 to 35kg range. Production will need to be by some form of no-bake hard sand moulding. |
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发表于 2015-2-25 21:25:22
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