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The Two Stage Drawing of Cylindrical Cups
The Ironing of Cylindrical Cups
The Shearing of Metal Bars and Blanks
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angle annealing apparatus Aquadag Autographic recording Automobile Engineers bending blank diameter blank-holding brass cleaning CM CM CM compressive stress constant clearance copper cracks crank press cup walls curves deep drawing direct redrawing drawing load drawing operation drawing speed drawing stress drawn cup dry graphite effect enable experimental flange flat-ended punch fracture friction gave give guide sleeve hoop stress initial Institution of Automobile investigation ironing load lubricants machine material maximum drawing maximum load maximum punch load metal method mild steel mineral oil Motor Industry Research Naphthalene nickel silver occurs plastic plastic bending plotted pressure plate profile radius punch profile radial drawing residual stresses reverse redrawing ring roller round-ended second stage shear shear stress Sheffield University shown in Figure shows soap stage cup stage drawing Steel draw strain-hardening strip sub-press Swift taper tensile stress tests were carried thickening thinning tongue wall thickness work-hardening