搅拌摩擦焊过程中下压力的检测及影响因素  

Measurements and influencing factors of longitudinal force of pin tools in friction stir welding process

作　　者：王希靖[1] 韩道彬[1] 张忠科[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料国家重点实验室,730050

出　　处：《焊接》2008年第9期22-25,共4页Welding & Joining

基　　金：国家自然科学基金资助项目(10577010)

摘　　要：针对搅拌摩擦焊过程,利用数据采集系统,研究了工艺参数对焊接下压力的影响,得到了下压力的变化规律。结果表明:当采用不同的工艺参数时,所检测的下压力变化曲线也不同。根据采集到的曲线特征分析发现:在同一参数下,焊接不同的材料时,材料所受的下压力不同;在不同的工艺参数下,焊接同一种材料时,材料所受的下压力也不同。试验证明,下压力随下压速度和下压量的增加而增加,随旋转速度的增加而减小。影响焊接过程中下压力的主要因素是旋转速度、下压量及下压速度。For friction stir welding process,the effect of welding parameters on the longitudinal force of welding was studied with data acquisition system.The variation of the longitudinal force was obtained.Experimental results show that,with different material at the same welding parameter,the longitudinal force is different.Meanwhile,with the same species material at the different welding parameters,the longitudinal force is also different.The experiments proved that longitudinal force increase with pin plug-in speed and amount,and decrease with the pin rotating speed.The main factors that influence the longitudinal force are rotate speed,plug-in amounts and plug-in speed.

关 键 词：LF21铝合金 LY12铝合金 搅拌摩擦焊 下压力 数据采集 

分 类 号：TG453[金属学及工艺—焊接]