第26卷第5期 粉末冶金技术 Vol 26. No 5 2008年10月 Powder Metallurgy Technology Oct.2008 具有内置随形冷却水道的注塑模具快速制造 刘锦辉3)∵史玉升2)陈继兵2 1)(黑龙江科技学院机械工程学院,哈尔滨150027) 2)(华中科技大学材料成形与模具技术国家重点实验室,武汉430074) 摘要:采用选择性激光烧结(SLS)技术烧结混加高分子粘结剂粉末的普通铁粉成形注塑模具形坯,而后 形坯经过脱膽、高湿烧结浸渍改性环氧树脂和浸渍后树脂的固化完成注塑模具制造。笔者对模具的强度♂ 精度进行了分析岍究。该方法综合了快速成形制造( Rapid Prototyping& Manufacturing,RP&M)技术的快捷 性和SLS技术自身的优点,既可以缩短制造注塑模具的周期,又能够随塑料件的形状轮廓设置模具中的冷却 水道,从而既加快了商家对于市场需求的反应速度,又提高了注塑效率和注塑件的质量,是一种快速制造适合 小批量生产的注塑模具的切实可行的方法 关键词:快速制造;选择性激光烧结;注塑模具;随形冷却水道 Ra pid manufacture injection mould with builtin conformal cooling channels Liu Jinhui"), Shi Y ', Chen Jibing 1)(College of Mechanical Engineering, Heilongjiang University of Science 2)( State Key Laboratory of Plastic Forming Simulation and Die Mould Technology, School of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China) Abstract Injection mould manufacturing encounters the growing competition today, while a rapid way of producing injection mould may win the advantages for it. In this paper, green part of injection mould with conformal cooling channels is manufactured by selective laser sintering (SLS)of commonly used iron powder mixed with polymer owder, and then enduse mould is attained after the green part is debound, sintered at high temperature and filtrated with modified epoxy resin. The strength and accuracy of the mould were investigated. The rapidness of Rapid Prototyping Manufacturing(RP&M)and the advantage of SLS are combined in this production method which shortens the production cycle to a week or so and can also setup cooling channels along the contours of the plastic part. Therefore, the process is proved to be a feasible way to manufacture injection mould for small batch Key words rapid manufacture; selective laser sintering; injection mould; conformal cooling channels 快速成形制造( Rapid Prototyping& Manufac到塑料制件顶出系统的限制,影响了水道的分布大 turing rp&M)技术为注塑模具的快速制造提供了小和数量,注塑件往往达不到均匀快速冷却,从而降 技术平台15,依此技术,新型的塑料零件能够尽低了注塑效率和塑料件的质量。RP&M中的三维 快应时进入市场。以往设计的注塑模冷却水道都是打印和选择性激光烧结(SLS)技术采用粉末分层堆 直线型,水道加工都是采用钻孔的常规方法,加上受积制造的成形方法,能够摆脱常规方法对于水道加 国防预研项目(531270102) 刘锦辉(1973),男,博士后。 Email backmyself a63.om 收稿日期:2007·10-11 2c1994-2009ChinaAcademicJOurnalElectronicPublishingHouse.Allrightsreservedhttp:/www.cnki.net具有内置随形冷却水道的注塑模具快速制造3 刘锦辉1) ,2) 3 3 史玉升2) 陈继兵2) 1) (黑龙江科技学院机械工程学院 ,哈尔滨 150027) 2) (华中科技大学材料成形与模具技术国家重点实验室 ,武汉 430074) 摘 要 : 采用选择性激光烧结(SLS) 技术烧结混加高分子粘结剂粉末的普通铁粉成形注塑模具形坯 ,而后 形坯经过脱脂、高温烧结、浸渍改性环氧树脂和浸渍后树脂的固化完成注塑模具制造。笔者对模具的强度和 精度进行了分析研究。该方法综合了快速成形制造(Rapid Prototyping & Manufacturing ,RP &M) 技术的快捷 性和 SLS 技术自身的优点 ,既可以缩短制造注塑模具的周期 ,又能够随塑料件的形状轮廓设置模具中的冷却 水道 ,从而既加快了商家对于市场需求的反应速度 ,又提高了注塑效率和注塑件的质量 ,是一种快速制造适合 小批量生产的注塑模具的切实可行的方法。 关键词 :快速制造 ;选择性激光烧结 ;注塑模具 ;随形冷却水道 Rapid manufacture injection mould with built2in conformal cooling channels Liu Jinhui 1) ,2) , Shi Yusheng 2) , Chen Jibing 2) 1) (College of Mechanical Engineering ,Heilongjiang University of Science and Technology ,Harbin 150027 ,China) 2) (State Key Laboratory of Plastic Forming Simulation and Die & Mould Technology , School of Material Science and Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China) Abstract : Injection mould manufacturing encounters the growing competition today , while a rapid way of producing injection mould may win the advantages for it1 In this paper , green part of injection mould with conformal cooling channels is manufactured by selective laser sintering ( SLS) of commonly used iron powder mixed with polymer powder , and then end2use mould is attained after the green part is debound , sintered at high temperature and infiltrated with modified epoxy resin1 The strength and accuracy of the mould were investigated1 The rapidness of Rapid Prototyping & Manufacturing (RP &M) and the advantage of SLS are combined in this production method which shortens the production cycle to a week or so and can also setup cooling channels along the contours of the plastic part1 Therefore , the process is proved to be a feasible way to manufacture injection mould for small batch production1 Key words : rapid manufacture ; selective laser sintering ; injection mould ; conformal cooling channels 3 国防预研项目(531270102) 3 3 刘锦辉(1973) ,男 ,博士后。E2mail :backmyself @1631com 收稿日期 :2007 - 10 - 11 快速成形制造 (Rapid Prototyping & Manufac2 turing ,RP &M) 技术为注塑模具的快速制造提供了 技术平台[1 - 5 ] ,依此技术 ,新型的塑料零件能够尽 快应时进入市场。以往设计的注塑模冷却水道都是 直线型 ,水道加工都是采用钻孔的常规方法 ,加上受 到塑料制件顶出系统的限制 ,影响了水道的分布、大 小和数量 ,注塑件往往达不到均匀快速冷却 ,从而降 低了注塑效率和塑料件的质量。RP &M 中的三维 打印和选择性激光烧结(SLS) 技术采用粉末分层堆 积制造的成形方法 ,能够摆脱常规方法对于水道加 第 26 卷第 5 期 2008 年 10 月 粉末冶金技术 Powder Metallurgy Technology Vol126 , No15 Oct12008