Modelling for predicting seam geometry in laser beam welding of stainless steel

摘要: Abstract A methodological approach for analytical modelling of deep penetration laser beam welding (LBW) stainless steels and its experimental verification is provided. After an analysis the problem in general terms a review activity, particular double source model proposed discussed. The allows derivation width melting zone caused by moving beam. Dependences length, aspect ratio were derived as function speed power. theoretical results obtained using are discussed analyzed comparison with data on typical test case. Optimal conditions obtaining preliminary optimization process parameters based results. case study present paper, referred to assembly fuel injectors automotive industry, demonstrates that when performed at high speeds thin wall components energy released per unit surface (energy density, ED) can be used describe heat transfer material shorten phase avoiding dependencies each single parameter.