双螺杆制备半固态坯料装置的设计  

Design of twin-screw device adopted in metal semi-solid slurry

作　　者：杜之明[1] 张晓华[1] 罗守靖[1] 

机构地区：[1]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150001

出　　处：《锻压技术》2009年第4期86-89,共4页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(50674017);中国博士后基金资助项目(20070420023)

摘　　要：双螺杆制备半固态坯料的思想来之于注塑行业挤出机的原理,与其不同之处在于半固态坯料制备中,更为注重的是其剪切和混合效果。本文基于以上思想,从双螺杆的设计起步,确定了双螺杆和与之对应的捏合块规格和参数,并对螺杆工作产生的轴向力进行了计算,选择了相应的止推轴承。此外,还估算了半固态坯料制备生产能力,解决了轴承径向尺寸和双螺杆中心距之间的矛盾。The idea of producing metal semi-solid slurry using the device of twin-screw comes from the theory of poly mer extruder used in injection industry, but they are not the same thoroughly. The device of twin-screw for metal semisolid slurry preparation must be more efficient in shearing and mixing. Based on the above, the twin-screw and corresponding kneading blocks were designed, and the axial force occurred when the device in working condition was calculated. Besides, the production ability of metal semi-solid device was estimated and the contradiction between size of thrust bearing and center-to-center distance was solved.

关 键 词：半固态浆料 双螺杆 捏合块 止推轴承 

分 类 号：TG249.9[金属学及工艺—铸造]