Method and apparatus for manufacturing heat exchanger tubes

Details Method and apparatus for manufacturing heat exchanger tubes Method and apparatus for manufacturing heat exchanger tubes

1983-01-21

1985-03-19

Envall, Jr., Roy N.

Electric heating

Metal heating

For bonding with pressure

219 61, 291573C, B23K 9225

Patent

active

045061351

ABSTRACT:
For the manufacture of heat exchanger tubes having a metal strip (tangential surface) welded to the surface of the tube, the metal strip is fastened to the surface of the tube by through-welding with welding current of alternating value.

REFERENCES:
patent: 3023300 (1962-02-01), Lehnert
patent: 4136272 (1979-01-01), Rudd
patent: 4336643 (1982-06-01), Roberts
patent: 4339654 (1982-07-01), Harriau et al.

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