金属加工（热加工）Issue(6)：50-57,64,9.
轨道车辆铝合金厚板对-搭接FSW界面曲钩控制技术研究
Research on the control technology of aluminum alloy thick plates for track vehicles' butt joint FSW hooks
摘要
Abstract
Using the crossbeam of rail vehicles as the carrier,different specifications of mixing heads were adopted for different plate thicknesses of the lap joint.The influence of the shape of the mixing head,welding process parameters,and welding offset on the formation of hook defects was deeply studied.The research shows that after the corner at the end of the mixing head is chamfered,the size of the hook can be reduced,and even the direction of the hook may change;when the length of the needle of the mixing head becomes shorter,the size of the hook will increase,and this factor has the greatest impact on the size of the hook;with the increase of the welding speed,the size of the hook tends to decrease,but the rotation speed has almost no significant effect on the size of the hook;under the same welding process conditions,when the offset is not large,the size of the hook decreases,but when the offset is too large,the size of the hook will increase sharply.By controlling the length,shape and process parameters of the mixing head,a qualified welding process window for the lap joint can be obtained.关键词
搅拌摩擦焊/对-搭接接头/界面曲钩尺寸Key words
friction stir welding/lap joint/hook size引用本文复制引用
栗木功,钮旭晶,洪晓静,赵琦璠,梁晨..轨道车辆铝合金厚板对-搭接FSW界面曲钩控制技术研究[J].金属加工（热加工）,2026,(6):50-57,64,9.基金项目
河北省科技重大专项(24292202Z). （24292202Z）
