Plate fin heat exchanger for superhigh pressure service

摘要: A plate fin heat exchanger adapted to applications using superhigh-pressure fluids was fabricated by brazing, the as stock an alloy consisting essentially of 0.3 1.0 wt. % Si, 0.05 0.25 Cu, 0.6 1.5 Mn and 0.45 0.9 Mg, balance being aluminum impurities, wherein said impurities contain up 0.8 Fe. At least one component selected from group Cr, 0.01 Ti, 0.03 Zr V may be added above stock. By fin, excessive silicon diffusion a brazing into which cause reduction width brazed joint, is suppressed, result, lowering bonding strength joint eliminated.