耐酸蚀高抗磨超高铬杂质泵叶轮消失模工艺开发

Lost Foam Casting Process Development of Impurity Pump Impeller with Acid Corrosion Resistance,High Wear Resistance and High Chromium

从FeCr40超高铬材料的研发制备和杂质泵叶轮消失模工艺的开发两个方面进行了系统研究。首先,通过对材料性能、组织结构和化学成分的分析,优化了材料配方,显著提升了其耐酸蚀性和抗磨损性。其次,结合大口出流和均衡凝固两种理论,设计了合理的浇注系统和冒口方案,并通过工艺虚拟仿真技术验证了设计的有效性。最终,成功制备出寿命超过国外同类产品的高品质叶轮,推动了新材料在湿法冶金领域的应用。该研究不仅提高了国内杂质泵的制造水平,还打破了国外长期的技术垄断。

This paper systematically studies the development and preparation of FeCr40 ultra-high chromium material and the design of the lost foam casting process for impurity pump impellers.By analyzing the properties,microstructure,and chemical composition,the formulation was optimized to significantly enhance its acid resistance and wear resistance.Through integrating the theories of large mouth outflow and balanced solidification,a rational gating system and riser scheme were designed,and the effectiveness was verified through process simulation technology.High-quality impellers with a lifespan exceeding those of foreign counterparts were successfully produced,advancing the application of new materials in the hydrometallurgy field.This research not only improves the domestic manufacturing level of impurity pumps but also breaks the long-standing foreign technical monopoly.