Si3N4陶瓷引弧微爆炸加工材料去除率建模与分析Model building and analysis on material removal rate of micro-detonation machining with striking arc for Si3N4 ceramics
张保国,田欣利,唐修检,王健全,佘安英
摘要(Abstract):
利用引弧微爆炸加工装置,以氮化硅工程陶瓷为加工对象,对引弧微爆炸加工过程的喷嘴烧损及材料去除率进行了研究。通过喷嘴烧损实验,研究了喷嘴烧损规律及喷嘴直径对材料去除率的影响;利用正交实验方法,建立了材料去除率经验模型并分析了材料去除率随加工参数的变化规律。结果显示:喷嘴直径随着脉冲次数的增加而扩展,当直径在2.4~2.8 mm之间时,可以产生最好的加工质量和最大的材料去除率;四个主要加工参数对材料去除率的影响显著,材料去除率随着工作电流、工作气压、工作脉宽的增大而增大,随着工作距离的增大而减小;建立的指数型经验模型简单可靠,与实验结果吻合良好,可以用于材料去除率的预测及控制。
关键词(KeyWords): 材料去除率;建模;引弧微爆炸加工;氮化硅;正交实验
基金项目(Foundation): 国家自然科学基金项目(51075309,51105378);; 国防十二五预研项目(51318020210)
作者(Author): 张保国,田欣利,唐修检,王健全,佘安英
DOI: 10.13289/j.issn.1009-6264.2012.04.005
参考文献(References):
- [1]葛昌纯,李江涛,陈克新.燃烧合成大尺寸Si 3 N 4陶瓷的研究[J].金属热处理学报,1997,18(3):112-116.GE Chang-chun,LI Jiang-tao,CHEN Ke-xin.Research on combustion synthesis of Si 3 N 4 ceramic with large dimensions[J].Trans Metal Heat Treatment,1997,18(3):112-116.
- [2]沈剑云,徐燕申,曾伟民,等.Si 3 N 4陶瓷材料的磨削试验研究[J].轴承,2003,12:25-28.SHEN Jian-yun,XU Yan-shen,ZENG Wei-min,et al.Experimental research on grinding of Si 3 N 4 ceramic[J].Bearing,2003,12:25-28.
- [3]Jay C Rozzi,Frank E Pfefferkorn,Yung C Shin,et al.Experimental evaluation of the laser assisted machining of silicon nitride ceramics[J].Journal of Manufacturing Science and Engineering,2000,122(11):666-670.
- [4]TIAN Xin-li,YANG Jun-fei,LIU Chao,et al.Study of engineering ceramic machining with a new design of ripple controlled micro-detonation of electrode arc striking[J].International Journal of Advanced Manufacture Technology,2010,48:529-536.
- [5]田欣利,杨俊飞,刘超,等.引弧微爆加工陶瓷新方法及其电源系统研制[J].装甲兵工程学院学报,2009,23(6):71-75.TIAN Xin-li,YANG Jun-fei,LIU Chao,et al.New method of engineering ceramics processing by arc striking micro-detonation and development of the power supply system[J].Journal of Academy of Armored Force Engineering,2009,23(6):71-75.
文章评论(Comment):
|
||||||||||||||||||
|
||||||||||||||||||