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粉末预热对电子束选区熔化成形工艺的影响 被引量:22

Effects of powder preheating in electron beam selective melting process
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摘要 研究了电子束选区熔化成形技术中粉末预热工艺对Ti-6Al-4V合金粉末在高能高速电子束作用下抗溃散性能的影响,并对该粉末进行了三维零件成形试验以验证粉末预热在实际成形中的作用。粉末抗溃散试验结果表明,对粉末进行预热可以明显提高粉末在一定电子束束流下的抗溃散临界扫描速度,增强其抗溃散性能;钛合金粉末的三维成形试验结果表明,粉末预热能够有效地改善成形层表面的"边缘缺陷"和"结球缺陷",提高表面质量,降低层厚;成形件显微组织观察结果表明,预热对层间结合情况有明显改善。 The influence of pre-heating on resistance to pushing-away phenomena of Ti-6Al-4V alloy powder in electron beam selective melting process was investigated.Three dimensional parts are formed using Ti-6Al-4V alloy powder to study the effects of pre-heating.Results indicate that pre-heating process can increase the anti-pushing-away critical scanning speed,and improve the anti-pushing-away capacity of the powder.Meanwhile,pre-heating process can diminish 'exterior scar' and 'balling' phenomenon,keep the layer thin,and get better fusion between layers.
出处 《焊接学报》 EI CAS CSCD 北大核心 2008年第10期77-80,共4页 Transactions of The China Welding Institution
基金 国家自然科学基金资助项目(200475015) 中国博士后科学基金资助项目(20070420331)
关键词 电子束选区熔化 预热 钛合金粉末 快速制造 electron beam selective melting pre-heating titanium alloy rapid manufacturing
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  • 1齐海波,颜永年,林峰,闫占功.电子束直接熔化技术中的粉末状态分析[J].清华大学学报(自然科学版),2005,45(8):1012-1015. 被引量:18
  • 2孟昭智.真空技术手册[M].黑龙江科技出版社,1985..
  • 3陆厚根.粉体工程概论[M].上海:同济大学出版社,1993..
  • 4Abe N, Morimoto J, Tomie M, et al. Formation of WC-Co layers by an electron beam cladding method and evaluation of the layer properties [J]. Vacuum, 2000, 59: 373-380.
  • 5Morimoto J, Abe N, Kuriyama F, et al. Formation of a Cr3C2/Ni-Cr alloy layer by an electron beam cladding method and evaluation of the layer properties [J]. Vacuum, 2001, 62: 203-210.
  • 6Cormier D, Harrysson O, West H. Characterization of H13 steel produced via electron beam melting [J]. Rapid Prototyping J, 2004, 10(1): 35-41.
  • 7WOHLERS T.Rapid prototyping,tooling and manufacturing state of the industry annual worldwide progress report[M].Colorado:Wohlers Associates,Inc.,2005.
  • 8YAN Yongnian,LIN Feng,QI Haibo,et al.Technology Research of Direct Forming Mould Based on Electron Beam[C]//China Die & Mould Industry Association.Proceedings of 2005 Mori Seiki 2nd International Conferenceon Die & Mould Technology,October 17-19,2005,Beijing.Beijing:China Machine Press,2005:165-170.
  • 9CORMIER D,HARRYSSON O,WEST H.Characterization of H13 steel produced via electron beam melting[J].Rapid Prototyping Journal,2004,10(1):35-41.
  • 10DAS S.On some physical aspects of process control in direct selective laser sintering of metals-part Ⅲ[C]//BARLOW J,BEAMAN J,BOURELL D,et al,eds.Twelfth Solid Freeform Fabrication Symposium,August 6-8,2001,The University of Texas at Austin.Austin:The University of Texas,2001:102-109.

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