CAJ | 학술논문

针对6061铝合金，采用自行研制的混合活性剂配方，利用正交设计法进行焊接工艺试验，得到一组性能良好的焊接工艺参数。在此焊接工艺条件下，混合活性剂增加熔深效果显著，可一次焊透10 mm的铝板，实现单面焊双面成形。焊后对焊缝的微观组织进行了观察和分析，并通过力学性能试验分析了活性剂对焊缝力学性能的影响。结果表明：与常规TIG焊相比，活性TIG焊的焊缝组织细密，基本不存在气孔、裂纹、夹杂等焊接缺陷；活性TIG焊接接头的拉伸强度和断裂伸长率均可达到与母材相当的水平，焊缝区的硬度明显提高，焊接接头性能良好。
침대6061려합금，채용자행연제적혼합활성제배방，이용정교설계법진행한접공예시험，득도일조성능량호적한접공예삼수。재차한접공예조건하，혼합활성제증가용심효과현저，가일차한투10 mm적려판，실현단면한쌍면성형。한후대한봉적미관조직진행료관찰화분석，병통과역학성능시험분석료활성제대한봉역학성능적영향。결과표명：여상규TIG한상비，활성TIG한적한봉조직세밀，기본불존재기공、렬문、협잡등한접결함；활성TIG한접접두적랍신강도화단렬신장솔균가체도여모재상당적수평，한봉구적경도명현제고，한접접두성능량호。
A serial of welding procedure tests employing customized mixed flux were applied in the orthogonal ex-perimental design,from which a set of welding parameters was obtained.The mixed flux enlarged the weld-pene-tration tremendously under this condition,and allowed double-side formation with one-side welding on 10mm a-luminum plate.The mechanical properties of the bead,as well as the microstructure in it,were tested to evalu-ate the effect of the flux on mechanical properties of welding beads.Results showed that activating flux TIG weld beads were fine and basically had no welding defect such as gas pore,crack,or slag inclusion.The mechanical performance of the joint was excellent.The weld hardness of the activating flux TIG weld joint was improved and the tensile strength and elongation at break achieved an equivalent level as base metal.