大型复杂薄壁Ti-6Al-4V合金熔模精密铸造工艺研究  

Research on Investment Precision Casting Process of Large Thin Wall Complex Ti-6Al-4V Alloy

作　　者：李毅 

机构地区：[1]西安飞机工业(集团)有限公司,陕西西安710089

出　　处：《钛工业进展》2012年第3期22-25,共4页Titanium Industry Progress

摘　　要：根据复杂薄壁铸件的熔模铸造理论,对Ti-6Al-4V合金滑轨铸件结构及难点进行了全面的研究分析,针对型壳的制造、合金的熔炼和浇注以及铸件的热等静压三个方面开展了相关工艺研究。结果表明:采用氧化钇耐火材料和三醋酸锆粘结剂进行面层造型,料浆涂挂性好,有较好的润湿性和良好的工艺性能;采用真空自耗凝壳炉熔炼合金以及离心浇注,可保证钛合金熔液的质量和充填性能;采用热等静压工艺处理铸件,可提高铸件的质量和性能。最终确定熔模精密铸造最佳工艺参数,并据此生产出了合格的铸件。The structure and difficulties of slide rail casting were analyzed based on the theory of investment precision casting for large thin wall complex Ti-6A1-4V castings. The manufacture of shell mold, melting and pouring of alloy and the hot isostatic pressing were also investigated. And finally, the optimum processing parameters for the investment precision casting of Ti-6A1-4V alloy were obtained, and the qualified castings were produced accordingly.

关 键 词：TI-6AL-4V合金 复杂薄壁铸件 熔模精密铸造 

分 类 号：TG249.5[机械工程—精密仪器及机械]