工程陶瓷的激光加热辅助切削技术

The technology of laser assisted machining to engineering ceramics

激光加热辅助切削工程陶瓷技术即使用激光作为外加热源先于刀具加热软化陶瓷工件,然后再使用刀具将软化的材料去除。较高的剪切变形区温度降低了陶瓷材料的屈服应力和硬度,陶瓷变形特征从脆性转变为塑性或者准塑性,从而提高切削效率,延长刀具使用寿命,有望解决陶瓷加工中的低效率和高成本现状。从激光加热辅助切削工程陶瓷研究进展、激光束的整合,以及切削机理等方面,对激光加热辅助加工工程陶瓷做了较为全面的论述。

Laser Assisted Machining（LAM） uses external heat sources to locally heat and soften the engineering ceramics before cutting tool. And then, remove the soften materials with tools. As a result, the yield strength, hardness and strain hardening of the work-piece reduce and deformation behavior of the engineering ceramic materials changes from brittle to ductile. This enables the engineering ceramic materials to be machined more easily and with low machine power consumption, which leads to increase in material removal rate and productivity. Gives a comprehensive summary about the laser assisted machining ceramics from contents including the research progresses of LAM, integration of a laser beam with machining applications and material removal mechanisms.