A New Spot Welding Technique for Fuselage

作     者：CHEN Dan CHAI Peng ZHAO Huaxia XIONG Jiangtao LI Jinglong 

作者机构：State Key Laboratory of Solidification ProcessingNorthwestern Polytechnical University School of Mechanical EngineeringHenan University of Engineering AVIC Manufacturing Technology Institute Shaanxi Key Laboratory of Friction Welding TechnologiesNorthwestern Polytechnical University 

出 版 物：《材料导报》 (Materials Reports)

年 卷 期：2019年第33卷第10期

页      面：1595-1596页

核心收录：

学科分类：08[工学] 

主　　题：High strength aluminum alloys kinds 

摘      要：High strength aluminum alloys(series 2XXX and 7XXX)are kinds of precipitation-hardening alloys,which have been widely applied in manufacturing of fuselage for their high strength-to-weight ratio,good fatigue performance and damage tolerance[1-2].These structures mostly adopt lap *** traditional joining methods include riveting and bolting,which cost weight-increase and *** disadvantages could be overcome by a new joining technique—friction stir spot welding(FSSW)developed from friction stir welding(FSW).However,after wel-ding,FSSW normally leaves the workpiece with a keyhole,which decreases mechanical properties and corrosion resistance of the *** fill the keyhole,refill friction stir spot welding(RFSSW,Refill-FSSW)was invented by GKSS in *** designs a special welding tool for RFSSW,consisting of pin,sleeve and clamping ring,which are precisely assembled with indepen-dent driving systems[3].In a typical RFSSW process,the pin and sleeve move in opposite direction at a given speed ***,the speeds are set inverse proportional to their cross-sectional *** 2011,GKSS performed RFSSW on aluminum alloy and obtained the joint with good ***,RFSSW was highlighted in research,which was expected to apply in fuselage manufacturing and to replace the traditional joining methods.