冷等静压坯体成型径向隔套收缩率的模拟计算

Simulation Calculation of Radial Shrinking Percentage of Rubber Sleeve in Process of CIP

双介质径向隔套式冷等静压设备在陶瓷等冶金粉体坯料压制中,存在由于坯料和托架尺寸选择过大引起设备橡胶隔套被损坏的情况,研究了坯料和工作介质受压收缩后对橡胶隔套径向变形的作用机理,建立压缩物理和数学模型,推导出了最窄处径向收缩率计算公式,为该类设备压制坯料和托架尺寸的选择提供了理论依据,具有一定的现实指导意义。

Damage of rubber sleeve may be caused due to the oversize of blank and bracket in the making process of ceramic blanks by using cold isostatic pressing（CIP） equipment of double medium radial rubber sleeve type. The mechanism of the radial deformation of the rubber sleeve, which is caused by the compression of blank and working medium in the compression process, is studied. The physical and mathematical models of the rubber sleeve deformation is established. It is deduced the radial shrinking percentage of the narrowest place of rubber sleeve from the models, which can provide a theoretical basis for selection of size in the blank and bracket. It has a certain realistic directive significance when using this type of CIP.