摘要
为减小陶瓷板件切口宽度,提高切口质量,采用水箍和磁场对附加阳极等离子弧进行综合二次约束.通过陶瓷板加工试验研究,探讨了水磁综合约束等离子弧的特性、加工质量和加工速度的一般规律.研究表明:该约束方法兼有水约束和磁约束的优点,其约束效果及相应的加工效果都优于单一水约束或磁约束的;利用水磁综合约束也有助于降低喷嘴热负荷,提高喷嘴寿命与加工稳定性;采用直径3mm的喷嘴对6mm厚的Al2O3陶瓷板进行切割,可获得宽度4.6mm的光滑切口,无渣切速可达0.9～1.2m/min.
In order to reduce the kerf width and improve the kerf quality, the hydro-magnetically confined plasma arc was used to cut engineering ceramic plates. Experiments and analyses were made about the mechanism and characteristics of hydro-magnetically confinement of arc, and about effects of secondary confinement on cutting quality, arc properties, and optimal process parameters. The method shows the better cutting quality and higher cutting speeds. Also it is possible to lower the heat load of nozzle and thus enhance its service life and the process stability. When the nozzle diameter is 3 mm, the kerf width of the A12O3 ceramic plate with 6 mm thickness is less than 4.6 mm, and the cutting speed reaches to 0.9-1.2 m/min.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2003年第1期57-60,共4页
Journal of Dalian University of Technology
基金
国家自然科学基金资助项目(59805002
50175035).
