前言随着国民经济的飞跃发展,内燃机采用涡轮增压器日益广泛。由于增压器需要量不断增加,增压器主要零件涡轮轴的焊接就成了关键。过去我厂是采用手工氩弧焊焊接涡轮轴的。不仅工效低,而且质量不易保证。特别是小型增压器因结构限制,密封环槽正处于焊缝区,焊缝硬度低,易磨损,直接影响涡 Preface With the rapid development of the national economy, turbochargers are increasingly used in internal combustion engines. Due to the ever-increasing demand for turbochargers, the welding of the turbine shaft, the main part of the turbocharger, becomes critical. In the past I was using a manual TIG welding turbine shaft. Not only low efficiency, but also difficult to guarantee the quality. Especially due to the structure of small turbocharger seal ring groove is in the weld zone, the weld hardness is low, easy to wear, a direct impact on the vortex