Plate fin heat exchanger for superhigh pressure service

Details Plate fin heat exchanger for superhigh pressure service Plate fin heat exchanger for superhigh pressure service

1983-02-25

1986-03-11

Richter, Sheldon J.

Heat exchange

With protector or protective agent

165166, 165905, F28F 306, F28F 2108

Patent

active

045748780

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

REFERENCES:
patent: 3878871 (1975-04-01), Anthony et al.
patent: 3960208 (1976-06-01), Anthony et al.
patent: 4209059 (1980-06-01), Anthony et al.
patent: 4317484 (1982-03-01), Tanabe et al.
patent: 4410036 (1983-10-01), Kanada et al.

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