超声振动辅助电解磨削GH3536工艺试验研究
2021-02-24
作者：霍金星，尹瀛月，孟翔宇，马玉财，张建华
单位：山东大学机械工程学院；高效洁净机械制造教育部重点实验室，机械工程国家级实验教学示范中心
摘要：GH3536锻造合金具有耐高温、高硬度、高抗拉强度等优点，是广泛应用于航空航天多种部件成型的关键材料之一，而传统的加工部件内孔方式极易造成刀具磨损，且难以高效得到极佳的表面质量。为获得较低粗糙度的GH3536内孔表面，提出一种超声波振动辅助的电化学磨削复合工艺方法。通过单因素试验，重点探究了脉冲电压、进给速度、超声振幅对孔内壁表面粗糙度和平均锥度的影响规律。试验结果表明：在电压为6V、进给速度0.8mm/min、超声振幅5μm等参数条件下，可获得平均锥度θ=0.65°、粗糙度Ra=0.51μm的内孔表面。
关键词：GH3536锻造合金；电解磨削；超声振动；粗糙度；平均锥度
中图分类号：TG580.6；TH162+.1文献标志码：ADOI：10.3969/j.issn.1000-7008.2021.02.002
Experimental Research on Ultrasonic Vibrationassisted Electrolytic
Grinding Process of GH3536
Huo Jinxing，Yin Yingyue，Meng Xiangyu，Ma Yucai，Zhang Jianhua
Abstract:The GH3536 wrought alloy is one of the key materials widely used for various key aerospace components due to its high temperature resistance，high hardness，tensile strength and other advantages.However，traditional machining methods of small holes are extremely easy to cause tool wear and thus difficult to obtain an ideal surface quality.For obtaining lower inner hole surface roughness of GH3536 parts，a composite process method of ultrasonic vibration assistedelectrochemical grinding is proposed.The effect of pulse voltage，feed rate，ultrasonic amplitude on inner hole surface roughness and average taper is studied through singlefactor experiments.The results indicate that the surface of the inner hole with an average taper of 0.65° and a roughness of Ra 0.51μm can be obtained under the condition of 6V pulse voltage，50% power duty cycle，0.8mm/min feed speed，and 5μm ultrasonic amplitude.
Keywords:GH3536 wrought alloy；electrolytic grinding；ultrasonic vibration；roughness；average taper