Controlling the zone of longitudinally seam-welding split tubes

Details Controlling the zone of longitudinally seam-welding split tubes Controlling the zone of longitudinally seam-welding split tubes

1982-04-19

1984-10-23

Envall, Jr., Roy N.

Electric heating

Metal heating

Of cylinders

219 1041, 219 95, 219 602, 219 61, 219105, H05B 606

Patent

active

044790430

ABSTRACT:
The h.f.-heated edges of a split tube are prepared prior to heating by means of contour-rolling the edges in order to obtain a convex contour in which the temperature is isothermically distributed, parallel to the convex edges.

REFERENCES:
patent: 1857505 (1932-05-01), Heineman
patent: 2021157 (1935-11-01), Stahl
patent: 3504149 (1970-03-01), Dixon et al.
patent: 4181845 (1980-01-01), Bolton

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