Process and apparatus for annealing can bodies

Details Process and apparatus for annealing can bodies Process and apparatus for annealing can bodies

1978-08-15

1980-09-02

Gilden, Leon

Metal treatment

Stock

Ferrous

72 38, 113120R, 113 7A, 113 29, 148 12D, 219 1069, 219 1043, 219 64, B21D 5100, H05B 500

Patent

active

042201063

ABSTRACT:
An apparatus for automatically annealing end portions of wall-ironed drawn can bodies and welded side seam can bodies formed of sheet steel to reduce stresses therein wherein the end portions may be flanged without cracking, wrinkling or folding. The can bodies are moved along a continuous path by a rotary table and are supported for rotation about their own axes during such movement. Associated with each rotating can body is a blowing hood for developing a protective gas atmosphere surrounding the portion of the can body to be annealed. The blowing hoods and associated can body upper end portions pass through an annealing zone defined by an elongated induction loop. The apparatus is particularly useful in annealing processes for sheet metal formed of unkilled steel.

REFERENCES:
patent: 1981629 (1934-11-01), Northrup
patent: 2439517 (1948-04-01), Johnson
patent: 3083285 (1963-03-01), Haimbaugh et al.
patent: 3584487 (1971-06-01), Carlson
patent: 3748422 (1973-07-01), Schafer
patent: 3964412 (1976-06-01), Kitsuda

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