Metal deforming – Process – Deforming sheet metal
Reexamination Certificate
2006-08-10
2011-12-13
Ekiert, Teresa (Department: 3725)
Metal deforming
Process
Deforming sheet metal
C072S348000
Reexamination Certificate
active
08074483
ABSTRACT:
We manufacture a two-piece can by the method using a laminated steel sheet as the base material, having the steps of: drawing a cylindrical blank for several times to form a can body in a shape of cylinder integrated with bottom; forming a tapered part extending outward from the can body in the radial direction thereof at the tip of the opening of the can body; applying diametral reduction to the tapered part to the diameter of the can body; and applying diametral reduction to the opening side of the can body to a diameter smaller than the diameter of the can body, while satisfying the formulae (1) and (2),in-line-formulae description="In-line Formulae" end="lead"?1.5≦h/(R−R) (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?d/R≦0.25 (2)in-line-formulae description="In-line Formulae" end="tail"?where h is the height from the can bottom to the tip of the opening, R is the circular blank positional radius, r is the radius of the can bottom, and d is the radius of the tip of the opening.
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Federation of European Aerosol Association Standard No. 215 (Sep. 1993), No. 219 (Sep. 1993) and No. 220 (Mar. 2002).
Iwasa Hiroki
Kojima Katsumi
Kubo Hiroshi
Nishihara Yuka
Oshima Yasuhide
DLA Piper (LLP) US
Ekiert Teresa
JFE Steel Corrporation
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