汽车排气管一般采用热弯对其进行弯曲成形,微型汽车或轿车的排气管为厚度在1.5 mm以内的薄壁不锈钢管,以达到轻量化的目的。由于加热后薄壁不锈钢管易氧化、脱碳、过热、过烧、熔化且工作条件差,对于薄壁不锈钢管弯曲部位出现褶皱现象严重且易弯裂情况,文章分析了产生该褶皱的原因,重点研究了消除褶皱的工艺方法,提出了符合目前生产需求的解决措施。 Automobile exhaust pipe is generally bent by bending, and the exhaust pipe of the mini car or car is a thin-walled stainless steel pipe with a thickness of less than 1.5 mm so as to achieve the purpose of light weight. Due to the easy oxidation, decarburization, overheating, over-burning, melting and poor working conditions of the thin-walled stainless steel tube after heating, the reason for the wrinkling is serious and the bending phenomenon is easily caused in the bending part of the thin- Focus on the process of eliminating wrinkles, put forward the solution to the current production needs.