顶锻刹车制度对摩擦焊接后峰值扭矩的影响  

EFFECT OF UPEND AND BRAKE ON THE LAST PEAK TORQUE IN FRICTION WELDING

作　　者：庞韵虹[1] 刘小文[1] 段立宇[1] 

机构地区：[1]西北工业大学

出　　处：《焊接》1996年第11期2-5,共4页Welding & Joining

基　　金：航空基金资助项目

摘　　要：研究了顶锻刹车制度和顶锻超前刹车时间对摩擦焊接后峰值扭矩和顶锻变形量的影响.发现采用顶锻超前刹车模式会导致较大的后峰值扭矩和顶锻变形量,而且随着顶锻超前刹车时间的延长,在试验范围内,后峰值扭矩和顶锻变形量还有所增加,而采用顶锻同步或顶锻滞后刹车制度时,均不存在后峰值扭矩,相应顶锻变形较小.综合测试表明,采用先顶后刹或顶刹同步模式可在较小的摩擦和顶锻压力下获得给定的轴向缩短量和性能优良的接头,这为降低摩擦焊接能耗、提高生产率提供了依据.This paper investigated the effects of three kinds of forge-brake mode in friction welding on the terminal torque. It was found that the mode which forging was done before braking (FBB) lead a greater peak of terminal torque and burn-off ,the longer the time which forging prior to braking . the greater the peak value of terminal torque and the larger the burn-off as well,while if forging was done after braking (FAB)or simultaneously (FBS) ,there was almost no the peak of terminal torque ,of cause ,the burn-off was less also. Properties test shown that the junction by the use of mode FBB and FSB had the better impact toughness ak,however ,for a given burn-off,the mode of FBB could obtain almost the same property ok as that of mode FSB under a smaller forge press, so the mode FBB was more suitable for producing.

关 键 词：摩擦焊接 顶锻刹车制度 后峰值扭矩 焊接 

分 类 号：TG453.9[金属学及工艺—焊接]