Method of manufacturing brazable pipes and heat exchanger

Details Method of manufacturing brazable pipes and heat exchanger Method of manufacturing brazable pipes and heat exchanger

1989-05-30

1990-08-07

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29890046, 29890053, 29890054, 165173, 228183, B21D 5302

Patent

active

049456350

ABSTRACT:
A process for producing brazeable pipes particularly for use in heat exchangers, the process comprising preparing a brazing sheet which comprises a core sheet coated with a brazing substance at least on one surface, forming a bulged portion of a semi-circular cross-section in the central section of the brazing sheet, providing apertures in the bulged portion for securing tube ends therein, and rolling the brazing sheet into a cylinder with its opposite ends being butt jointed to each other.

REFERENCES:
patent: 1540270 (1925-06-01), May
patent: 2105241 (1938-01-01), Gazey
patent: 3546763 (1970-12-01), Pasternak
patent: 3683657 (1972-08-01), Davies
patent: 4678112 (1987-07-01), Koisuka et al.
patent: 4680845 (1987-07-01), Miller
patent: 4749033 (1988-06-01), Clausen

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