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The material we are seeking is Pearlitic CrMo cast steel to the following specification.
# c- V6 v0 ?# t& ^0 L6 ]0 } A
& ^$ H' ^: }: `. v3 P$ _; @+ L%C 0.6 ~ 0.8. k( `& x: x% G# ?! t9 d; A
%Si 0.75 max
/ p6 U6 j2 g1 M: r! m%P 0.05 max
# a" X/ ^- m% P, @- o+ w! \2 p%S 0.03 max
1 ?$ B1 m3 `5 q%Ni 0.3 max) k: N1 V$ V4 M6 {% b
%Cr 2.0 ~ 2.4
- `: w, b$ y8 T: ]9 r) @2 K%Mo 0.2 ~ 0.4* T7 R! \1 n' M' G8 x
%Cu 0.25 max
5 c4 D% `2 m" P) f, @%Al 0.05 max
- \/ `( [3 U% q( r%Fe balance& ]7 C* N( r* e
9 D; D; n& \+ g* I; j; NCondition is normalised and tempered.9 u* a" l# }8 \& s
Hardness range is 33~42 HRC with the target 37 HRC.
) N# d8 q* g8 v* t! ?# b3 b# ~4 S/ i: t$ P) m8 P: a' W4 c2 w9 k5 D0 Y
Castings 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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