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主要阐述了采用自制新型水介质等离子弧设备对氮化硅陶瓷材料进行加热辅助切削的试验条件及过程。通过对加工后刀具磨损的测量,总结出在热源距离h=8mm,电流I=6A,电压U=140V的热源条件下,采用V=450r/min、f=0·08mm/r和ap=0·2mm的切削用量时,刀具磨损比较小,切削效果理想。该试验说明了应用该小功率水介质等离子弧辅助加热切削氮化硅陶瓷材料的方法可行而有效,能够大大降低加工成本,对促进工程陶瓷材料的更广泛应用具有重要意义。
The experiment conditions and process of heating assisted cutting of silicon nitride ceramic material by a new self-made plasma arc plasma equipment are mainly described. Through the measurement of tool wear after machining, it is concluded that V = 450r / min, f = 0.08mm / r and ap = 0 under the condition of heat source distance h = 8mm, current I = 6A and voltage U = 140V · 2mm cutting capacity, the tool wear is relatively small, the cutting effect is ideal. The test shows that the method of plasma arc-assisted heating cutting silicon nitride ceramic material with the low-power aqueous medium is feasible and effective, can greatly reduce the processing cost, and is of great significance for promoting the wider application of engineering ceramic materials.