(1.Lanzhou Petrochemical College of Vocational Technology,Lanzhou 730060,China;2. Beijing MMD Mining Machinery Co., Ltd,Beijin 100000,China;3. Material School of Tianjin University,Tianjin 300072,China;)
In order to research laser welding of A304 stainless steel sheet affected by welding electric parameters, this paper presents spectral analysis on laser welding of A304 stainless steel sheet by AvaSpec-2048 fiber optic spectrometer under different welding parameters and the way of laser output. It is shown in this paper that laser power, welding speed and the way of laser output have effect on the element type of characteristic lines and the content of the elements in the plasma.