4 - Metal-Steel.HO - Packaging Materials PKGSC 102 Metals...

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Packaging Materials PKGSC 102 Metals Steel - Non – Beverage Cans in U.S. - Beverage cans in Europe - Drums, strapping, etc. Aluminum - Beverage Cans - Trays - Foil Bare or Laminated Steel -Raw Material for steel is iron -Iron is converted to steel through a series of steps -Melt / form -Cold Reduction Annealing Tempering -Steel is coated to be used in can manufacture Textbook: - Chap. 7 covers Can making (Steel and Aluminum) - Chap. 14 pp.331-340, read for next time Metals - Cans Two Basic Types Three Piece 1. Rectangle formed into cylinder 2. Seal side seam of cylinder 3. Two metal circles rolled onto ends of cylinder 1
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Two Piece 1. Circle drawn into cup shape sylinder 2. One circle needed for top Fig. 7.1 in Text Fig. 7.2 in Text Two Methods of Making 2 Piece Cans Drawn and Ironed (Aluminum or Steel) -Ironing process allows for thinner walls Draw Redraw (Aluminum or Steel) -Side walls have even thickness Term “Tin Can” is not accurate Steel Cans may have microscopic tin coating Uncoated Steel called Black Plate
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