Simulation analysis on brazing process of titanium plate fin heat exchanger
Based on the structural characteristic of titanium plate fin heat exchanger,the press brazing process is determined.The simulation analysis and process study of single layer brazing titanium plate fin heat exchanger are conducted.Based on the mechanical characteristic of heat exchanger,two differ-ent brazing methods,that is,vertical baffle pressing deformation method and corrugated plate pressing deformation method,are designed.Different deformation amounts are designed,and the brazing pro-cess is analyzed by ABAQUS finite element simulation software.The results indicate that the vertical baffle experiences slight bending deformation as pressed for 0.1 mm,but the stress of heat exchanger is uniform with maximum stress of 170 MPa.Under the press amount of 0.3 mm,the corrugated plate deforms evenly without distortion defection,and the maximum stress is 165.8 MPa.Based on simula-tion results,the height difference between the corrugated plate and the vertical baffle is set to 0.3 mm in final process,the corrugated plate is pressed for 0.3 mm,and the vertical baffle is pressed for 0.1 mm.The process is verified,and the heat exchanger with good quality and tight brazing is produced.
brazingtitanium alloyplate fin heat exchangerfinite element analysis
万方数据
维普
