High frequency current welding of metal strip to a metal part

Details High frequency current welding of metal strip to a metal part High frequency current welding of metal strip to a metal part

1978-12-07

1980-11-11

Reynolds, B. A.

Electric heating

Metal heating

Of cylinders

219 7801, 219104, 219 95, B23K 3106

Patent

active

042334845

ABSTRACT:
Method and apparatus for welding a metal part, e.g. a tube or strip, to a thin, flexible metal strip using high frequency electric currents in which the part and strip are continuously advanced to a weld point where they are pressed together. In advance of the weld point, high frequency current is supplied to the part and the strip through contacts engaging them so that portions thereof are heated to welding temperature by the time they reach the weld point. From the point of engagement of the contact with the strip or strips to the weld point the strip material is maintained in a fixed path by a rigid member against which the strip is pressed by tensioning the strip with a pad frictionally engaging the strip. If desired, the current may be fed to the contact engaging the part through a proximity conductor to increase the heating of the part relative to the strip.

REFERENCES:
patent: 2809276 (1957-10-01), Smith
patent: 2938993 (1960-05-01), Rudd
patent: 3327088 (1967-06-01), Rudd
patent: 3541296 (1970-11-01), Rudd
patent: 3610869 (1971-10-01), Ito
patent: 3619546 (1971-11-01), Briggs

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