铸型预热温度对Ti_3Al环形复杂结构铸件充型的影响  

Effect of Preheat Temperature of Mold on Filling Process of Ti_3Al Alloy Ring-Shaped Complex Casting

作　　者：赵鹏 罗倩 朱郎平 李建崇 南海 李岩 魏战雷 黄东 ZHAO Peng;LUO Qian;ZHU Lang-ping;LI Jian-chong;NAN Hai;LI Yan;WEI Zhan-lei;HUANG Dong(AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China)

机构地区：[1]中国航发北京航空材料研究院,北京100095

出　　处：《铸造》2018年第8期740-743,共4页Foundry

摘　　要：研究了室温、150℃、300℃铸型预热温度下网格试样的充填率和400℃、600℃两种铸型预热温度以及采用砂箱保温对Ti_3Al环形复杂件的充型影响,发现提高铸型预热温度可以改善Ti_3Al的充型能力,但其与铸型面层反应产生气体对液态Ti_3Al合金填充有阻碍作用;铸型放置于砂箱中的条件下,400℃的预热温度可以满足Ti_3Al合金环形复杂构件的完整充型。The filling ratios of grid samples prepared with the molds being preheated at room temperature, 150℃ and 300℃ were investigated, and the effects of two preheat temperatures of molds （ 400 ℃, 600℃） and heat preservation with molding box on the filling process of Ti3Al alloy ring-shaped complex castings were researched. The results show that increasing the preheat temperature of molds can improve the filling capability of Till alloy, however the gas produced from the reaction between the Ti3Al alloy and face-layer of molds hinders the filling. Furthermore, if the mold is thermally preserved in the flask, the preheat temperature of mold at 400℃ can promote the complete filling of Ti3Al alloy ring-shaped complex casting.

关 键 词：预热温度 TIAL合金 环形复杂结构铸件 充型 

分 类 号：TG245[金属学及工艺—铸造]