| 摘要 |
A centrifugal pump for a mixture of liquid and gas is provided to improve abrasion resistance and heat-resistance property by making a casing of C, S, Si, Mn, P, Cu, Mo, Co, Ti, V, Ni and Cr in specific ratio. A centrifugal pump for a mixture of liquid and gas comprises impeller and casing(20,40,50,60) contacted to the impeller. The casing consists of C of 2.979 ~ 3.641 wt%, S of 0.081 ~ 0.099 wt%, Si of 2.124 ~ 2.596 wt%, Mn of 0.486 ~ 0.594 wt%, P of 0.0819 ~ 0.1001 wt%, Cu of 0.162 ~ 0.198 wt%, Mo of 0.027 ~ 0.033 wt%, Co of 0.009 ~ 0.011 wt%, Ti of 0.018 ~ 0.022 wt%, V of 0.018 ~ 0.022 wt%, Ni of 0.063 ~ 0.077 wt%, Cr of 0.09 ~ 0.11 wt% and Fe of remnant.
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