me_350_-_lect_16_-_ch_18.20091022.4ae11849254c99.02551357

me_350_-_lect_16_-_ch_18.20091022.4ae11849254c99.02551357 -...

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FUNDAMENTALS OF METAL FORMING Overview of Metal Forming Material Behavior in Metal Forming Temperature in Metal Forming Strain Rate Sensitivity ME 350 – Lecture 16 – Chapter 18
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Metal Forming Plastic deformation that changes the shape of a metal workpiece using a tool, called a die, by applying a stress that exceeds the metal’s: Stresses are typically compressive: Examples: rolling, forging, extrusion However, some forming processes Stretch the metal (tensile stresses): wire drawing Others bend the metal (tensile and compressive) Still others apply shear
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Basic Types of Deformation Processes 1. Bulk deformation – starting material has low Rolling Forging Extrusion Wire and bar drawing 2. Sheet metalworking – starting material has high Bending Deep drawing Cutting
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Sheet Metalworking Often called pressworking Parts are often called stampings Usual tooling: punch and die Bending Cutting
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