Method of manufacturing a heat exchange tube with internal surfa

Details Method of manufacturing a heat exchange tube with internal surfa Method of manufacturing a heat exchange tube with internal surfa

1980-11-10

1983-05-10

Goldberg, Elliot A.

Electric heating

Metal heating

For bonding with pressure

219 99, B23K 1132

Patent

active

043831630

ABSTRACT:
The invention relates to a tube with surface-enlarging elements attached to the inside thereof, which elements are in the form of radially inwardly directed pins welded on the tube wall. A method for forming such a tube also is provided, the method comprising inserting a holder for each pin into the tube and moving the holder outwardly to press the pin against the tube wall while welding the pin thereto.

REFERENCES:
patent: 1101858 (1914-06-01), Laehman
patent: 1630338 (1927-05-01), Gail
patent: 1929444 (1933-10-01), Murray
patent: 2364130 (1944-12-01), Clancy
patent: 2365670 (1944-12-01), Wallace
patent: 2473633 (1949-06-01), Brown

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