Bi-metal Cylinder Liner
Bi-metal liners is the main expendables parts of the mud pump ,it adapts double metal fix together,the outer sleeve is forged with quality 45# carbon steel,the inner sleeve is casted with high carbon and high chromium use the technology of centrifugal casting,after heat treatment,the hardness of it can reach to a level of 62HRC.
1.Liner Outer Sleeve:45#forged steel,tensile strength is σb>610MPa,yield>450MPa,δ>17%,HB180-200
2.Liner Inner Sleeve:High chromium cast iron (centrifugal casting).Quenching hardness is HRC59-97.Annealing hardness .
Chemical composition
C |
Cr |
Si |
Mn |
Mo |
S,P |
2.8%-3.1% |
22%-28% |
0.6%-0.9% |
0.5%-1% |
0.5%-0.8% |
<0.05% |