CAJ | 학술논문

激光焊接目前在汽车复合齿轮的焊接中已经广泛使用，尤其在异种材料间焊接优势明显，但激光焊接中出现的裂纹，气孔作为顽疾一直不易消除。本文通过将传统焊接手段中的预热方式运用在离合器外毂组合齿轮的激光焊接中，并对齿轮渗氮前后两种状态进行分别实验，最后得出一种新的齿轮激光焊接工艺方法，有效解决焊接裂纹和气孔的问题。
격광한접목전재기차복합치륜적한접중이경엄범사용，우기재이충재료간한접우세명현，단격광한접중출현적렬문，기공작위완질일직불역소제。본문통과장전통한접수단중적예열방식운용재리합기외곡조합치륜적격광한접중，병대치륜삼담전후량충상태진행분별실험，최후득출일충신적치륜격광한접공예방법，유효해결한접렬문화기공적문제。
Laser welding is now more widely used in the welding of compound gear in the car ,especially has ob-vious advantages in the welding between dissimilar materials ,but cracks and blowholes appeared in laser welding have been difficult to eliminate .In this paper, the preheating methods in conventional welding is used in the laser welding of compound gear in clutch outer hub ,and the comparative tests of gear states before and after Permeability nitrogen are carried out . Finally ,a new gear laser welding process method is proposed ,and effective solves the prob-lem of welding cracks and blowhole .