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发表于 2010-11-10 14:56:48
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来自： 中国江苏常州
本帖最后由 wenjuanzhi2008 于 2010-11-10 15:00 编辑 + B- I% R# ~6 C9 Z2 }
7 L/ F1 S! m2 `HC:High Carbon Cast Iron; Cu,Cr is the mainly alloy element.
$ p) X. N4 s, Q/ qThe material in the German literature GG15HC sign, in English is GIHC (Gray Iron High Carbon). ( R; v6 u: g* }( I
GG-15HC: A wide range of cast iron is produced from the HC-type cast iron used in the manufacture of brake discs, because of its favorable effect of alloying on the texture and very good resistance to abrasion.
3 E/ L; e% W8 Z! S7 {The cast-iron texture: Graphite (%) 12.5, Graphite shape IA3, Perlite (%) 99, Ferrite (%) <1;
/ R1 t* g! t, YChemical composition: C 3.73, Si 2.07, Mn 0.78, P 0.058, S 0.085, Ti 0.014, Cu 0.56, Cr 0.27, Sn 0.039.& ~4 r" N$ v: M' W2 M' E
Mechnical property:Hardness: 180 ± 5 HB, Tensile strength:240 MPa.
$ @7 Y, u7 V! c) SThe cast GG15HC marked characteristics:+ z+ w; f3 O8 X6 L# Q
- High thermal conductivity,
: @, Q$ G4 e4 B6 `+ u! S& f* j3 \6 I- Low thermal stresses,1 v% ^3 S w5 N, o8 [
- High resistance against cracking due to heat generated,1 t, ~ {" @) v5 D: Q
- Good shock absorption properties. |
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