Method of making a corrugated fin

Metal working – Method of mechanical manufacture – Heat exchanger or boiler making

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Details

72180, 72385, 72414, B21D 514, B21D 1304

Patent

active

052953033

ABSTRACT:
The strip 2 is inserted between forming rollers 1a and 1b so that fins 3 are formed on the strip 2. The forming rollers 1a 1b have a line of protrusion protruding radially on the periphery thereof and the protrusion of one roller mates with protrusion of the other roller. A pair of forming rollers or more pairs of forming rollers are employed. A part of the strip 2 sandwiched between side face portions 13a and 14a of the protrusion 13 and 14 is pressed in the direction of the thickness of the strip with a stress between yield stress and maximum stress of the strip 2. To adjust the stress, a clearance G between protrusions is controlled.

REFERENCES:
patent: 2343126 (1944-02-01), Matlat
patent: 2701000 (1955-02-01), Colvin
patent: 2948325 (1960-08-01), Welindt
patent: 3197975 (1965-08-01), Boling
patent: 4233833 (1980-11-01), Balinski
patent: 4317350 (1982-03-01), Sivachenko
patent: 4505419 (1985-03-01), Steeb
patent: 4770018 (1988-09-01), Bosl
patent: 5056348 (1991-10-01), Albrecht

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