铸型搅动细晶铸造真空炉的研制

Development of Fine Grain Cast Vacuum Furnace about Mold Agitation Process

北京航空材料研究院研究制造了我国第一台铸型搅动工艺细晶铸造真空炉。在该细晶铸造真空炉上，可用铸型搅动法浇注整体细晶涡轮，其晶粒尺寸为ＡＳＴＭ２－３级；也可浇注双性能涡轮，即轮毂和辐板为ＡＳＴＭ２－３级的细晶粒，而叶片为ＡＳＴＭＭ７－Ｍ８级的粗晶粒。

The first domestic fine grain cast vacuum furnace on mold agitation process has been developed successfully by Beijing Institute of Aeronautical Materials. Using this furnace, both integral fine grain turbine wheels, whose grain size grade are in the range of ASTM2￣3, and dual properties turbine wheels, whose hub are of ASTM2￣3, yet blades are of ASTM M7￣M8 grain size grade, can be obtained by use of mold agitation process.