摘要
分别用低铬铸铁、铸造碳钢、灰口铸铁作为基材,采用负压铸渗工艺制造了wc陶瓷颗粒增强表面复合材料渣浆泵泵壳,研究分析其宏观结构和显微组织,优化选择适用于渣浆泵过流件的wc颗粒增强表面复合材料的基材.结果表明:灰口铸铁作为表面复合材料的基材比低铬铸铁和铸造碳钢更适合制造具有复杂、异形曲面的渣浆泵过流件,过流件复合层厚度3—5 mm,复合层与基材层、增强颗粒与基体均形成冶金结合.
To evaluate the future commercial application of surface - reinforced WC particle alloy to slurry pumps, low chromium cast iron, mild steel and gray iron are selected respectively as the substrate. Slurry pump components are prepared by sand mold vacuum infiltration technique. The results show that WC/gray iron composite is most suitable for slurry pumps, which has a very good wettability with WC powders and easily forms complex component contour. The thickness of the composites layer on the whole surface can reliably reach 3-5 mm. The composites layer is metallurgically bonded to substrate, so does WC particle to the matrix.
出处
《昆明理工大学学报（理工版）》
2004年第1期29-32,共4页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
云南省应用基金(项目编号:2002E0007Q)
