Automated fin tube process

Details Automated fin tube process Automated fin tube process

1994-01-18

1995-06-13

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29726, 29890046, 29890053, B23P 1526

Patent

active

054231213

ABSTRACT:
A process to form a continuous fin helically around the exterior of a cylindrical tube by rotation of a primary forming roller and rotation of a contiguous spindle roller. The process includes advancing and inserting the fin in a gap between the primary forming roller and the spindle roller. The gap between the primary forming roller and the spindle roller is closed and the fin is tightly gripped therebetween. The tube is axially moved for a first, chosen length, while, at the same time, the tube is rotated at a first speed, the primary forming roller is rotated at a first speed and the spindle roller is rotated at a first speed. Thereafter, the tube is axially moved for a second, chosen length, while, at the same time, the tube is rotated at a second speed, the primary forming roller is rotated at a second speed, and the spindle roller is rotated at a second speed.

REFERENCES:
patent: 2087723 (1937-07-01), McCord
patent: 3377459 (1968-04-01), Brown, Jr. et al.
patent: 3388449 (1968-06-01), McElroy
patent: 3500903 (1970-03-01), McElroy
patent: 3613206 (1971-10-01), McElroy
patent: 3789786 (1974-02-01), Wiedenmann et al.
patent: 4542568 (1985-09-01), Venable, III et al.
patent: 4969255 (1990-11-01), Schmidt et al.

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