高密度聚丙烯板半自动化机器人搅拌摩擦焊接参数优化  

Parameter optimization of friction stir welding of high density polypropylene plate semi-automation

作　　者：王海娜[1] 郑传琴[1] 

机构地区：[1]河南农业职业学院,河南郑州451450

出　　处：《电焊机》2016年第1期77-80,共4页Electric Welding Machine

摘　　要：采用搅拌摩擦焊可进行热塑性材料的连接,通过搅拌头和工件间摩擦产生的焦耳热得以实现。相对于搅拌摩擦焊接的热塑性塑料,传统工具会在所焊接试样的背面产生一道焊缝,该焊缝会在根部形成缺陷,从而降低整个试件的抗拉强度。选用的高密度聚乙烯板具有高透明度,能够实时分析其在焊接过程中产生的形态变化。设置焊接参数为：探头自身旋转速度800~1 200 r/min,横向行进速度40~200 mm/min,轴向力1~5 k N。此外,还分别选用高度为5 mm的方形、柱形及具有一定角度的探头对试样进行焊接,最终通过检验焊缝处抗拉强度和观察微观结构来评估焊缝质量。Thermoplastic materials connection can be conducted using friction stir welding, this method by mixing head and joule heat generated by friction between the workpiece to achieve. Relative to the friction stir welding of thermoplastics,traditional tools will produce a weld at the back of the welded specimen,the weld flaw can be formed in the roots,and then reduces the tensile strength of the specimens. In view of the high density polyethylene plate used in the experiment with high transparency, can analyze the morphological changes of the generated during the welding process in real time. This experiment set welding parameters are as follows ： probe rotational speed between 800-1 200 gmin,the transverse velocity is 40-200 mm/min,the axial force between 1-5 kN. In addition,also choose height is 5 mm square,cylindrical and a certain angle probe to welding specimen respectively. Finally assess the quality of weld through inspection weld tensile strength and observation of microstructure.

关 键 词：搅拌摩擦焊 聚合物 半自动化机器人 

分 类 号：TG456[金属学及工艺—焊接]