Microstructure Characteristics and Finite Element Analysis for Welding Residual Stress of Vacuum Brazed of Stainless Steel Tube Sheet Joint

The intensity of vacuum brazed of 304 stainless steel tube sheet structure has been tested with the tensile testing machine.This paper presented the microstructure characters of brazed joint with metallographic analysis and EDS analysis,studied the residual stress of vacuum brazed of the small size stainless steel tube sheet structure with finite element software ANSYS.The experimental results show that the stress concentration occurs at the joint of the brazed tube sheet,finite element analysis obtains the distribution of the residual stress.