铁基粉末冶金液压马达阀板的研究与制备

Development and preparation of Fe-based powder metallurgy valve plate used in hydraulic motor

阀板是液压马达的关键零件,具有多台阶异形复杂结构和力学性能要求高等特点。本文采用粉末冶金技术替代原铸造工艺,通过精选材料配方,合理进行成形模具模架设计,控制烧结熔渗过程,优化热处理工艺参数,制造出了高质量铁基粉末冶金阀板零件,完全满足液压马达的应用要求,可代替铸造阀板件。

As the key component of hydraulic motor, valve plate shows the characteristics of complex multi-step shape structure and high mechanical property requirements. Replacing the original casting process, the high quality and qualified Fe-based valve plate used in hydraulic motor was produced by powder metallurgy technology. The raw Fe-based materials were selected carefully, the forming mold was designed reasonably, the sintering melting process was controlled intensively, and the heat treatment parameters were optimized. In the results, the Fe-based powder metallurgy valve plate can satisfy the application requirement of hydraulic motor.