镁橄揽石砂（粉）取代石英砂（粉）制造熔模铸造型壳的工艺研究  

Shell-Making Process of Investment Casting Using Mg-Olivine Sand(and Flour)Instead of Silica Sand(and Flour)

作　　者：徐正达[1] 李爱群[1] 王秀萍[1] 韦世鹤[1] 

机构地区：[1]华中理工大学

出　　处：《特种铸造及有色合金》1995年第5期13-14,18,共3页Special Casting & Nonferrous Alloys

摘　　要：进行了镁橄榄石砂（粉）制造熔模铸造型壳的工艺研究，与石英砂（粉）型壳比较的结果表明，镁橄榄石砂（粉）型壳有较高的常温和高温强度，较低的残留强度、热膨胀率和热变形率，得到的铸件质量也较好。A Shell-making process of investment casting using Mg-olivine sand(and flour)instead of silica sand(and flour)was studied.comparing to the silica sand(and flour)shell,the Mg-olivine sand(and flour)shell has higher room-temp. and high-temp.strength,lower retained strength and lower rates of expansion and deformation. A better casting quality was obtained.

关 键 词：熔模精铸 型壳 镁橄榄石砂 

分 类 号：TG249.5[机械工程—精密仪器及机械]