Method for the conformation of a metallic tube, particularly for

Details Method for the conformation of a metallic tube, particularly for Method for the conformation of a metallic tube, particularly for

1980-07-16

1984-08-28

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291574, 72367, B21D 5302

Patent

active

044675119

ABSTRACT:
A method for conforming to a circular cross-section the end of a metallic tube of oblong cross-section for a heat exchanger, comprising two steps, one during which the end of the tube is subjected to a radial compression, and the other during which a punch having a diameter equal to that desired for the inner surface of the tube end is forcibly driven into said end.

REFERENCES:
patent: 1856618 (1932-05-01), Brown
patent: 2367942 (1945-01-01), Hartman
patent: 3426409 (1969-02-01), Lewis
patent: 3710473 (1973-01-01), McElwain et al.
patent: 3906605 (1975-09-01), McLain
patent: 3972371 (1976-08-01), Plegat
patent: 4159034 (1979-06-01), Bellovary et al.

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