Practical application of smash and breakaway press-working to engineering ceramic plates

本研究的目的是建立一种简单的方法，通过传统的冲压操作在脆性薄板材料中形成孔，并开发一种新的冲压加工技术，利用热应力辅助的开裂（分离切割）。结果表明：(1)利用专门设计的圆顶冲床，在工程陶瓷板上成功地形成了孔；(2)利用机械热压加工，开发了工程陶瓷的直线、曲线和圆切割技术。在一些玻璃杯中，通过压制形成哑铃型试样。

The purpose of the present research is to establish a simple method of forming holes in brittle sheet materials by a conventional punching operation and also to develop a new press working technique with the use of cracking (breakaway cutting) aided by thermal stress.The obtained results are sumarized as(1) by utilizing specially designed round-top punch, the formation of holes was quite successful in engineering ceramicplates and(2) by using the mechano-thermal press-working, a linear, a curved and a circular cutting techniques were developed for engineering ceramics. In some glasses, Dumbbell-type specimens were formed by the press-working.