WC-Re复合搅拌头设计及其制造工艺研究  

A study of design and manufacturing process of WC-Re composite friction stir welding tool

作　　者：张嘉波[1] 邹鑫 陈滨熹 唐普洪[1] 陈科[2] ZHANG Jiabo;ZOU Xin;CHEN Binxi;TANG Puhong;CHEN Ke(Institute of Mechanical Design,Jiaxing Vocational Technical College,Jiaxing 314036,CHN;School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,CHN)

机构地区：[1]嘉兴职业技术学院机械设计研究所,浙江嘉兴314036 [2]上海交通大学材料科学与工程学院,上海200240

出　　处：《制造技术与机床》2019年第6期97-102,共6页Manufacturing Technology & Machine Tool

基　　金：浙江省教育厅科研项目(Y201737642)

摘　　要：针对高温搅拌摩擦焊接过程中搅拌针和轴肩失效形式和程度不一致,以及现有的用于高温搅拌摩擦焊接搅拌头制造的材料的成本过高问题。提出了一种复合材料搅拌头的设计。搅拌针采用WC-Re合金,轴肩采用WC-Co合金,两部分用圆锥面连接。通过数值计算得出适中锥度,针对WC-Re合金与WC-Co合金在电火花加工过程中腐蚀速率不一致所形成的凸台特征,提出了该搅拌头的三级制造工艺。使用试制的搅拌头进行焊接试验,试验结果表明本搅拌头结构合理,能适应搅拌摩擦焊接过程中的高温高压力复变环境。In order to solve problem of the inconformity of wear on friction stir welding tool and the problem of high cost of tool material.A new design of tool was proposed.In the new design pin is made of WC-Re alloy while shoulder is made of WC -Co alloy,the two parts are connect by circular conical surface.Appropriate taper was found by finite element analusis.In order to solve the lug boss caused by the manufacturing velocity difference between WC-Re alloy and WC-Co alloy the three step manufacturing process is also proposed in this paper.By the experiment using the new design tool,the structure design and pin strength is confirmed.

关 键 词：搅拌摩擦焊机 搅拌头 复合 高温 

分 类 号：TH136[机械工程—机械制造及自动化]