CAJ | 학술논문

采用激光-电阻复合焊接方法进行铝合金T型接头焊接工艺试验,对激光-电阻复合焊接过程中的主要焊接工艺参数:滚轮电极形状、电流大小和激光功率对焊缝成形及接头性能的影响进行分析,并优化工艺参数以获得良好的焊缝成形和优质焊接接头.试验结果表明:采用弧形端面滚轮电极,在合适的电流和激光功率参数条件下,激光-电阻复合焊接T型接头不仅可以降低接头搭接面的间隙,而且改善焊缝成形,增加搭接面的焊缝宽度,使T型接头的拉伸剪切栽荷与单独激光焊接相比得到显著提高.激光-电阻复合焊接有效改善了激光焊接存在的一些不足,拓展了激光焊接的工业应用范围.
채용격광-전조복합한접방법진행려합금T형접두한접공예시험,대격광-전조복합한접과정중적주요한접공예삼수:곤륜전겁형상、전류대소화격광공솔대한봉성형급접두성능적영향진행분석,병우화공예삼수이획득량호적한봉성형화우질한접접두.시험결과표명:채용호형단면곤륜전겁,재합괄적전류화격광공솔삼수조건하,격광-전조복합한접T형접두불부가이강저접두탑접면적간극,이차개선한봉성형,증가탑접면적한봉관도,사T형접두적랍신전절재하여단독격광한접상비득도현저제고.격광-전조복합한접유효개선료격광한접존재적일사불족,탁전료격광한접적공업응용범위.
The aluminum alloy T-joints were carried out by laser-resistance hybrid welding.The influences of main process parameters on welding characteristics and mechanical properties were investigated.During the laser-resistance hybrid welding of aluminum alloy T-joints,the main process parameters including shape of roller electrodes,electric current and laser power were analyzed and optimized to obtain good formation of weld seam and high-quality welding joint.The experimental results show that the gap at the lap surface of welded T-joint can be decreased and the formation of weld seam be modified with arc edge roller electrodes for laser-resistance hybrid welding of aluminum alloy T-joint,under the condition of optimized electric current and laser power.Furthermore,the weld width at the lap surface can be raised,consequently,the joint tensile shear load increased significantly compared with that of laser welding.The laser-resistance hybrid welding can effectively solve some of the limitations in laser welding,which is beneficial in expanding the laser welding application in industries.