不同打孔工艺对孔边微观组织的影响
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- 英文论文题名：The Influence of Drilling Methods on the Microstructure around the Holes
- 论文作者：周忠娇 ; 王莉 ; 赵民革 ; 黄敏 ; 常剑秀 ; 楼琅洪 ; 张健
- 英文论文作者：Zhou Zhongjiao ; Wang Li ; Zhao Minge ; Huang Min ; Chang Jianxiu ; Lou Langhong ; Zhang Jian ; Institute of Metal Research ; Chinese Academy of Sciences ; Shenyang National Laboratory for Materials Science ; Institute of Metal Research ; Chinese Academy of Sciences ; Beijing Beiye Functional Materials Corporation
- 年：2015
- 作者机构：中国科学院金属研究所高温合金部;中国科学院金属研究所沈阳国家材料(联合)实验室;北京北冶功能材料有限公司材料研究所;
- 论文关键词：激光打孔 ; 电火花打孔 ; 电化学打孔 ; 再铸层 ; 微裂纹 ; 锥度
- 英文论文关键词：laser drilling ; electro-discharge machining ; electrochemical machining ; recast layer ; microcracks ; taper
- 会议召开时间：2015-05-20
- 会议录名称：第十三届中国高温合金年会论文集
- 英文会议录名称：Proceedings of the 13th China Superalloys Conference
- 语种：中文
- 分类号：TG132.3;TG66
- 学会代码：ZGJS
- 会议名称：第十三届中国高温合金年会
- 会议地点：中国北京
- 主办单位：中国金属学会高温材料分会
- 学会名称：中国金属学会
- 页数：4
- 文件大小：2189k
- 原文格式：O
- 会议级别：全国
摘要
本文采用光学显微镜(OM)、扫描电子显微镜(SEM)观察比较了三种不同打孔工艺(激光打孔、电火花打孔及电化学打孔)对孔边微观组织形貌的影响。研究结果表明:激光打孔孔边存在较厚的再铸层、微裂纹等缺陷,而且孔倾斜角度越小,微裂纹越长;孔锥度较大。电火花打孔孔边再铸层很薄,为规则的柱状组织,孔边没有发现微裂纹,而且孔几乎实现了零锥度加工。电化学打孔实现了孔边无微裂纹、无再铸层、无残余应力的"三无"效果,但是孔表现为上大下小。
The microstructure of holes machined by laser drilling(LD),electro-discharge machining(EDM) and electrochemical machining(ECM) was observed by optical microscope(OM) and scanning electron microscope(SEM).The results showed that thick recast layer,microcracks and large taper were found around LD holes,and microcracks became longer with the decreasing of skew angles of holes.For EDM holes,the recast layer was much thinner compared to LD holes and no microcracks were observed.In addition,the EDM holes appeared almost no taper.For ECM holes,no recast layer or microcracks existed but the holes exhibited non-cylindrical nature.
The microstructure of holes machined by laser drilling(LD),electro-discharge machining(EDM) and electrochemical machining(ECM) was observed by optical microscope(OM) and scanning electron microscope(SEM).The results showed that thick recast layer,microcracks and large taper were found around LD holes,and microcracks became longer with the decreasing of skew angles of holes.For EDM holes,the recast layer was much thinner compared to LD holes and no microcracks were observed.In addition,the EDM holes appeared almost no taper.For ECM holes,no recast layer or microcracks existed but the holes exhibited non-cylindrical nature.
引文
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[2]李向东,王伟.提高激光打孔加工质量的途径[J].航空工程与维修,2000(4):44~45.
[3]张晓兵.激光加工涡轮叶片气膜孔的现状及发展趋势[J].材料研究学报,2014,28(9):663~667.
[4]Abbas M,Solomon D G,et al.A review on current research trends in electrical discharge machining(EDM)[J].International Journal of Machine Tools&Manufacture,2007(47):1214~1228.
[5]Sen M,Shan H S.A review of electrochemical macro-to micro-hole drilling processes[J].International Journal of Machine Tools&Manufacture,2005(45):137~152.
[6]Sharma S,Jain V K,et al.Electrochemical drilling of inconel superalloy with acidified sodium chloride electrolyte[J].International Journal of Advanced Manufacturing Technology,2002(19):492~500.
[7]辛凤兰.高质量激光打孔技术研究[D].北京:北京工业大学,2006.
[8]郭文渊,王茂才,等.镍基超合金激光打孔再铸层及其控制研究进展[J].激光杂志,2003,24(4):1~3.
[9]Schneider M,Berthe L,et al.A fast method for morphological analysis of laser drilling holes[J].Journal of Laser Applications.2010,22(4):5.
[10]李志友,于维成,等.激光表面再铸层结构对DZ22定向凝固合金疲劳性能的影响[J].材料工程,1994(8~9):30~32.
[11]张晓兵,李其连,等.激光加工小孔工艺及其孔壁再铸层对DZ22高温合金疲劳性能的影响[J].航空工艺技术,1995(2):20~22.