(TiB+TiC)/TC4复合材料电解钻孔试验研究  

Experimental Investigation of Electrochemical Drilling of(TiB+TiC)/TC4 Composites

作　　者：杨怡天 刘刚强 李寒松[1] YANG Yitian;LIU Gangqiang;LI Hansong(Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Jinshan Jiaoshan Beigushan National Scenic Area Brigade of Zhenjiang City Detachment,Jiangsu Fire and Rescue Corps,Zhenjiang 212004,China)

机构地区：[1]南京航空航天大学,南京210016 [2]江苏省消防救援总队镇江市支队金山焦山北固山国家风景名胜区大队,镇江212004

出　　处：《航空制造技术》2022年第3期118-121,共4页Aeronautical Manufacturing Technology

基　　金：国家科技重大专项(2017-VII-0015-D111)。

摘　　要：钛基复合材料是一种典型的难加工材料,采用传统机械加工方法存在加工效率低和加工质量差等问题。利用电解加工技术,采用直径为10mm的管状阴极,对(TiB+TiC)/TC4复合材料进行电解钻孔加工试验研究。进行了(TiB+TiC)/TC4复合材料的电化学特性研究,测量了(TiB+TiC)/TC4复合材料在10%NaNO_(3)溶液中的极化曲线和电流效率。探究了加工电压、电解液压力对加工精度的影响。结果表明,当加工电压为30V,电解液压力为0.6MPa时,电解钻孔可以在1mm/min的进给速度下稳定加工。当加工的盲孔深径比为3.06时,孔的圆度误差为41.1μm,锥度为0.4°,具有较高的加工精度。Titanium matrix composites is a kind of typical hard-to-cut materials,and traditional machining methods have problems such as low machining efficiency and poor machining quality.To this end,experimental investigation on electrochemical drilling of(TiB+TiC)/TC4 composites using a tubular cathode with a diameter of 10mm was conducted.The electrochemical characteristics of(TiB+TiC)/TC4 composites were studied.The polarization curves and current efficiency of(TiB+TiC)/TC4 composites in 10%NaNO_(3) solution were measured.The influence of processing voltage and electrolyte pressure on processing accuracy was explored.The results show that when the machining voltage is 30V and the electrolyte pressure is 0.6MPa,the electrochemical drilling process is stably at a feed speed of 1mm/min.When the depthto-diameter ratio of the machined blind hole is 3.06,the roundness error of the hole is 41.1μm and the taper is 0.4°,which shows the high machining accuracy of the electrochemical drilling method.

关 键 词：管状阴极 电解钻孔 (TiB+TiC)/TC4复合材料 电化学特性 锥度 

分 类 号：TB333[一般工业技术—材料科学与工程]