[특허]Light-weight, high-strength, drawn and ironed, flat rolled steel container body method of manufacture

Light-weight, high-strength, drawn and ironed, flat rolled steel container body method of manufacture 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B21D-051/10 B21D-022/30
출원번호	US-0602727 (1975-08-07)
발명자 / 주소	Saunders William T. (Weirton WV)
출원인 / 주소	National Steel Corporation (Pittsburgh PA 02)
인용정보	피인용 횟수 : 35 인용 특허 : 0

초록 ▼

A light-weight unitary can body for pressure packs, such as carbonated beverage containers, is produced from high tensile strength steel. Flat rolled container stock steel is double cold reduced without an intermediate anneal. This material is drawn and ironed, and a bottom profile is formed while the can body is mounted on the ironing mandrel. The bottom profile includes a rounded-bottom annular chime and recessed convex panel. Formation of the bottom profile breaks surface adhesion between the ironing mandrel and the interior of the can body facilitating removal of the can body. The open end of the can body is necked-in to accommodate a closure chime seam within the diameter of the main portion of the can body sidewall.

대표청구항 ▼

Method of manufacturing a sheet metal can body of high tensile strength flat rolled steel container plate which has been double reduced by cold rolling without an intermediate anneal to a thickness gage of about 0.008 inch to about 0.011 inch comprising the steps of providing a flat rolled steel sheet metal blank of high tensile strength steel having a thickness gage of about 0.008 inch to about 0.011 inch, such flat rolled steel being characterized by tensile strength of about 80,000 to 120,000 psi, drawing the sheet metal blank into a cup having an endwall and unitary sidewall defining an open end longitudinally opposite to the endwall such that the unitary sidewall is substantially uniformly spaced from a longitudinal axis centrally disposed of the cup being drawn with the drawing of the sheet metal blank into such up-shaped configuration taking place without substantially changing the gage of the flat rolled steel, and the endwall of such cup having a substantially planar configuration and being disposed in substantially right angled relationship to such central longitudinal axis, providing an ironing mandrel having a sidewall uniformly spaced from its central longitudinal axis and a bottom-wall profile-forming configuration at its working end longitudinally opposite to its work input end, such bottomwall profile-forming configuration of the ironing mandrel having a recessed endwall of circular configuration having a diameter equal to approximately 85percent of the diameter of the mandrel sidewall, ironing the unitary sidewall of such cup while mounted on the ironing mandrel without substantially changing the thickness gage of the endwall forming a can body with an elongated sidewall of lighter gage than its bottom wall, and forcing the interior surface of such unitary sidewall into intimate contact with the mandrel sidewall and causing tight adherence between such intimately contacted surfaces, forming a bottom wall profile in the can body while the can body is mounted on the ironing mandrel to provide a circular configuration recessed panel having a diameter of approximately 85 percent of the diameter of the unitary sidewall, the recessed panel having a convex configuration as viewed from the exterior of the can body, and an annular chime portion joining the recessed panel to the sidewall, the annular chime having a U-shaped configuration in radial cross-section with a rounded bottom configuration and an interior leg of substantially cylindrical configuration, the interior leg of the bottom wall profile being disposed substantially parallel to the unitary sidewall of the can body, with the recessed panel being formed by a male die member contacting bottom sheet metal of the can body about the full periphery of the reduced diameter circular configuration panel and interfitting with the circular configuration recessed endwall of the ironing mandrel such that formation of such bottom wall profile exerts a pulling force on the ironed sheet metal in the sidewall of the can body, such pulling force breaking surface adhesion between the interior surface of the unitary sidewall of the can body and the sidewall of the mandrel so as to facilitate removal of the can body from the ironing mandrel, removing the ironed sidewall with recessed panel bottom configuration can body from the ironing mandrel, and necking-in sheet metal contiguous to the open end of the can body to reduce the diameter of such sheet metal and to form flanging metal of cylindrical configuration and a curvilinear configuration transition zone between such reduced diameter cylindrical configuration flanging metal and the remainder of the sidewall of the can body.

이 특허를 인용한 특허 (35)

Fortner, Thomas Edward, Aerosol can.
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Johansson Bert E. (Golden CO) Grims Conrad M. (Golden CO), Apparatus and method for forming can bottoms.
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Scott K. Westphal, Beverage container.
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Westphal Scott K., Beverage container.
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Gombas Laszlo A. (Rte. 7 ; Box 555Q Evergreen CO 80439), Bottom roll-forming method and apparatus and resultant can end configuration.
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Lee ; Jr. Harry W. (Richmond VA) Wallace Joseph W. (Richmond VA), Can body bottom configuration.
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Monro, Stuart; Presset, Alain; Riley, Jonathan; Vincent, Keith, Can manufacture.
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Monro, Stuart; Presset, Alain; Riley, Jonathan; Vincent, Keith, Can manufacture.
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Riley, Jonathan; Presset, Alain; Monro, Stuart; Vincent, Keith, Can manufacture.
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Riley, Jonathan; Presset, Alain; Vincent, Keith Alan; Monro, Stuart Alexander, Can manufacture.
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Lee ; Jr. Harry W. (Richmond VA) Wallace Joseph W. (Richmond VA) Woolard James M. (Richmond VA), Container.
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Phalin Thomas L. (Cary IL), Container.
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Scott K. Westphal, Container.
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Nishi, Hidetoshi, Continuous pickling and cold-rolling equipment and operating method thereof.
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Ferreira, Mark A.; Wowczuk, Yurij F.; Henry, Richard A.; Raborn, Richard H., Die components for making pressure relief devices.
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Yamaguchi Hisakichi (Ashiya JP), Drawn and ironed can body and filled drawn and ironed can for containing pressurized beverages.
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Miller Edward C. (Broomfield CO) Straw David A. (Lakewood CO), Lightweight metal container.
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Bachmann Henry C. (Dayton OH) Fraze Ermal C. (Dayton OH), Method and apparatus for fabricating a can body.
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Bulso ; Jr. Joseph D. ; Gang ; Jr. Terry L. ; Calderone Gregory A. ; Stewart Harry D. ; Simmons William J., Method and apparatus for forming a bottom-profiled cup.
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Kitt Martin P. (Arvada CO), Method and apparatus for forming outwardly projecting beads on cylindrical objects.
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Fraze Ermal C. (Dayton OH) Bachmann Henry C. (Dayton OH), Method for forming a shell for a can type container.
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Clowes Ernest J. (Lower Burrell PA), Method of forming a drawn and redrawn container body.
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Claydon Paul C. (Swindon GB2) Ball Martin F. (Shrivenham GB2), Method of forming containers.
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Cvacho Daniel S. (Richmond VA) Haufler Edwin R. (Richmond VA) Wallace Joseph W. (Richmond VA) Woolard James M. (Richmond VA), Method of making a container.
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Vanderlaan Dirk (Alameda CA), Necked-down can having a false seam and an apparatus to form same.
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Saunders William T. ; Dalrymple William H., One-piece can bodies for pressure pack beverage cans.
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Ferreira,Mark A.; Wowczuk,Yurij F.; Henry,Richard A.; Raborn,Richard H., Pressure relief device for aerosol can.
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Mulawski Walter J. (Chelmsford MA), Pressure relief device for internally pressurized fluid container.
상세보기
Mulawski Walter J. (Chelmsford MA), Pressure relief device for internally pressurized fluid container.
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Dye, Richard G.; Robichaud, Arthur W., Process for forming a deep drawn and ironed pressure vessel having selectively controlled side-wall thicknesses.
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Sabreen Bernard S. (Philadelphia PA) Aaron Martin (Philadelphia PA), Storage drum.
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Jentzsch, Kevin R.; Ross, John R.; van de Liefvoort, Matthias K.; Jacober, Mark A., System for compression relief shaping.
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Carstens, Aaron E.; McCarty, Patrick K.; McClung, James A.; Ripple, Paul L.; Butcher, Gregory H., Truncated dome cup.
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Carstens, Aaron E.; McCarty, Patrick K.; McClung, James A.; Ripple, Paul L.; Butcher, Gregory H., Truncated dome cup.
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LaRosa John (Carpentersville IL) Panipinto David C. (Ontario NY), Undercut punch to control ironing.
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Light-weight, high-strength, drawn and ironed, flat rolled steel container body method of manufacture 원문보기

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