双吊环型减振器焊接质量控制策略研究

Research on Welding Quality Control Strategy of Double Ring Damper

研究了带金属防尘罩的双吊环型汽车减振器多道焊接过程全面质量控制的综合策略。主要包括对活塞杆与吊环的焊接、防尘罩盖的焊接、防尘罩的焊接、底盖与贮油缸焊接以及底盖与吊环之间的焊接诸焊接过程的质量控制。有效地解决了活塞杆与吊环凸焊过程中活塞杆损伤问题、防尘罩盖与吊环在采用二氧化碳气体保护焊焊接过程中烧穿防尘罩盖、防尘罩点焊脱焊、底盖与贮油缸焊接密封性不良和强度不过关以及底盖与吊环焊接异常等焊接控制问题。上述质量问题的解决对于制造过程中有效地保护活塞杆表面质量,防止减振器掉头(即吊环脱落)、漏油和异响都起到了非常重要的作用。应用结果也进一步验证了所提出的焊接过程全面质量综合控制策略的有效性和可行性。

The comprehensive quality control strategy of multi-pass welding process for automobile shock absorbers with double suspender rings with metal dust cover was studied.It mainly includes the welding of piston rod and ring,the welding of dust cover,the welding of dust cover,the welding of bottom cover and oil cylinder,and the welding between the bottom cover and ring.The study in this paper effectively solves the problem of piston rod damage during convex welding of piston rod and hanging ring,the problem of dust cover burning in the welding of carbon dioxide gas protection welding,the problem of spot welding of dust cover,the poor sealing and unqualified strength of bottom cover and oil storage cylinder,and the abnormal welding of bottom cover and hanging ring.The solution of the above quality problems plays a very important role in effectively protecting the surface quality of the piston rod in the manufacturing process and preventing the turning of the shock absorber(i.e.the suspension ring falls off),oil leakage and abnormal sound.The application results also further verify the effectiveness and feasibility of the proposed comprehensive quality control strategy for welding process.