A study of the mechanisms involved in initial friction process of continuous drive friction welding
A study of the mechanisms involved in initial friction process of continuous drive friction welding
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连续驱动摩擦焊初始摩擦过程机理研究
DOI：
10.1080/01694243.2015.1022499
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发表时间：
2015-06-18
影响因子：
2.3
通讯作者：
Liang, Li
中科院分区：
文献类型：
--
作者：
Li, Peng;Li, Jinglong;Liang, Li
以20-软钢为材料，研究了焊接条件对连续驱动摩擦焊初始摩擦过程的影响。结果表明，在初始峰值扭矩之前，摩擦界面依次经历磨损、滑动和粘着三种典型的摩擦行为。滑动阶段的扭矩呈现平台特征，滑动阶段的扭矩呈现平台特征，滑动阶段的扭矩呈现平台特征，粘附阶段的扭矩呈现快速增长特征。当摩擦压力从15 MPa增加到60 MPa以上时，初始连接位置（即电晕连接）从试样半径的1/4（1/4 R）向1/2 R移动。最高表面温度在最高温度出现之前呈现出初始缓慢上升、平台上升和快速上升的特征，对应于摩擦界面的磨损、滑动或粘着状态。初始连接位置实际上与达到最高温度的位置一致。
The effects of the welding conditions on the initial friction process of continuous drive friction welding are investigated using 20-Mild steel. The results show that the friction interface will sequentially experience three typical friction behaviours of abrasion, slide and stick before the initial peak torque. The torque in slide stage shows a platform feature, which transforms to stick stage with a rapidly increasing feature of the torque. As the friction pressure increases from 15 to over 60 MPa, the initial joining location (i.e. corona bond) shifts from one-fourth of the specimen radius (1/4R) towards 1/2R. The maximum surface temperatures show initial slow rising, platform and rapid rising features before the highest temperature appears, which is corresponding to the interface friction status of abrasion, slide or stick. The initial joining location virtually coincides with the location where the maximum temperature is attained.