Influences of Pouring Power （ISM） on the Surface  Quality for TiAl  Based Alloys Casting

Sheng Wenbin  Guo Jingjie  Su Yanqing  Ding Hongsheng  Jia Jun

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Influences of Pouring Power （ISM） on the Surface Quality for TiAl Based Alloys Casting
Issue 6, (1998)
Published： 1998 ，
DOI：

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[1]盛文斌,郭景杰,苏彦庆,丁宏升,贾均.浇注时功率(ISM)对TiAl基合金铸件表面质量的影响[J].特种铸造及有色合金,1998(06):6-9.

Sheng Wenbin Guo Jingjie Su Yanqing Ding Hongsheng Jia Jun. Influences of Pouring Power （ISM） on the Surface Quality for TiAl Based Alloys Casting. [J]. Special Casting & Nonferrous Alloys (6).(1998)
[1]盛文斌,郭景杰,苏彦庆,丁宏升,贾均.浇注时功率(ISM)对TiAl基合金铸件表面质量的影响[J].特种铸造及有色合金,1998(06):6-9. DOI：

Sheng Wenbin Guo Jingjie Su Yanqing Ding Hongsheng Jia Jun. Influences of Pouring Power （ISM） on the Surface Quality for TiAl Based Alloys Casting. [J]. Special Casting & Nonferrous Alloys (6).(1998) DOI：

摘要

采用感应凝壳熔炼（ＩＳＭ）法熔炼了Ｔｉ－４８％Ａｌ－２％Ｃｒ－２％Ｎｂ合金，以静态浇注和离心浇注两种条件在金属型中浇注了汽车排气阀。通过分析阀体的成形情况，总结了浇注时功率对合金填充能力和铸件表面质量的影响规律。结果表明，ＩＳＭ法熔铸ＴｉＡｌ基合金时，合金的线收缩量随浇注时功率的提高而增大，离心浇注可有效地抑制收缩，浇注时功率处于２００至２８０ｋＷ范围内所得铸件表面质量较为理想。

Abstract

Ti 48%Al 2%Cr 2%Nb alloy was melted with Induction Skull Melting（ISM） method

and automotive exhaust valves were formed in permanent mold at static and centrifugal conditions. The influences of pouring power on filling capability of alloy and surface quality of castings were concluded by analyzing the valve forming characteristics. Results showed that linear shrinking increased with the increasing of pouring power and could be restrained by centrifugal casting with ISM method. Surface quality was better with pouring power between 200 and 280 kW.

关键词

感应凝壳熔炼（ISM）离心排气阀浇注时功率

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