钛合金电火花诱导可控烧蚀及车削修整复合加工试验研究.pdf

设计·研究
《电加工与模具》2013年第3期
钛合金电火花诱导可控烧蚀及车削修整
复合加工试验研究
陈龙海,刘志东,邱明波,徐安阳,田宗军
(南京航空航天大学机电学院,江苏南京210016)
摘要:根据钛合金在一定温度和氧气压力条件下发生快速氧化燃烧现象,在电火花诱导放电
所提供的高温热源和助燃氧气作用下,对钛合金进行电火花放电诱导可控娆蚀,同时通过车刀对
形成的烧蚀及软化层进行在线机槭修整,提高表面质量。对TC4钛合金进行常规电火花加エ、电火
花诱导可控烧做加工和电火花诱寻可控烧蚀及车削修整复合加工对比试验,结果表明:电火花诱
导可控娆蚀及车削修整复合加工具有加工速度快、电极损耗低等优点,并分析了氧气压力、エ件转
速、电极材料等对加工效果的影响。
关键词:电火花;钛合金;可控烧蚀;车削;高效
中图分类号:TC661文献标识码:A文章编号:1009-279X(2013)03-0001-06
Experimental Study on Titanium- Alloy Controllable Combustion Induced by EDM and
Turning Dressing Combined Machining
Chen Longhai, Liu Zhidong, Qiu Mingbo, Xu Anyang, Tian Zongjun
Abst Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
act: Based on the fast combustion phenomenon of titanium alloy under certain high tempera-
ture and oxygen pressure conditions a new processing method for titanium alloy is proposed by the in
ducing electrical discharge and combustion-supporting oxygen. The machining principle is that control
lable combustion induced by electrical discharge occurs between the work-piece and the combustion
inducing electrode, and at the same time the turning tool dresses combusted and soften layer formed by
controllable combustion on-line to improve the surface quality. Contrast test on TC4 titanium alloy
about electric discharge machining(EDM controllable combustion induced by EDM and controllable
combustion induced by EDM and turning dressing combined machining. The results show that control
lable combustion induced by EDM and turning dressing combined machining has the characteristics of
high processing speed and low electrode wear. The effect of oxygen pressure, the work-piece rotary
speed and electrode materials on the processing machining result is analyzed
Key words: electrical discharge; titanium alloy; controllable combustion; turning dressing; efficient
钛合金是典型的难加工金属材料,其切削加工不受其力学性能限制,非常适合于加工难切削金属
性能较低,存在切削温度高、刀具易磨损等问题。材料。然而,电火花加工蚀除材料的能量主要来源
电火花加工主要依靠极间脉冲性火花放电时的电于脉冲电源,该加工方法与传统金属切削加工相比
热作用来蚀除多余的工件材料叫,材料的可加工性效率较低。
国内外研究人员提出了多种新型电火花加工
收稿日期:2013-01-24
方法,如气中电火花加工、超声辅助气中电火花加
基金项目:国家自然科学基金资助项目(51175256,51205197);江
苏省自然科学基金资助项目(BK201732,就空科学基工、液中喷气电火花加工門和喷雾电火花加工等。
金资助项目(201E050);江苏省普通高校研究生科但以上各种方法主要依靠极间电火花放电释放出
研创新计划资助项目(CXLX12_0138)中央高校基本科
研业务费专项资金资助
的能量来蚀除工件材料,能量的大小仍依赖于脉冲
第一作者简介:陈龙海,男,1988年生,硕士研究生。
电源,其加工效率相对较低