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The material we are seeking is Pearlitic CrMo cast steel to the following specification.
5 p* m, [! i! ^, @1 l
6 H5 q6 j$ {0 l4 x4 H) Y%C 0.6 ~ 0.8) z; I4 e, _1 J8 s8 u1 R0 m8 g6 F
%Si 0.75 max' r3 S* z Q9 Q& B
%P 0.05 max8 i- T+ B. l# u( `6 F
%S 0.03 max M0 }. M+ w' w& l
%Ni 0.3 max- ^+ T! |. Q: `' Y! C7 o
%Cr 2.0 ~ 2.4
2 D& S3 A5 I8 t! k%Mo 0.2 ~ 0.40 \& @8 X& _8 x' v
%Cu 0.25 max
+ U! f/ e% H9 |+ B2 X4 ?6 [%Al 0.05 max
3 Y1 F! Q+ U- L/ J+ G s, w2 t4 [%Fe balance# V) k$ ^, S ?0 S3 h' g. Y; A
# O+ x7 m B- ^8 p5 B7 s
Condition is normalised and tempered.
; T. ]% m' G% V9 iHardness range is 33~42 HRC with the target 37 HRC.
& m5 R L3 G$ Q3 j3 p1 D6 K
5 T5 `4 d) K: T, W9 a" pCastings 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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