Metal-forming processes use a remarkable property of metals—their ability to flow plastically in the solid state without concurrent deterioration of properties. Moreover, by simply moving the metal to the desired shape, there is little or no waste. | CHAPTER 34 METAL FORMING SHAPING AND CASTING Magd E. Zohdi Dennis B. Webster Industrial Engineering Department Louisiana State University Baton Rouge Louisiana William E. Biles Industrial Engineering Department University of Louisville Louisville Kentucky INTRODUCTION 1101 Permanent-Mold Casting Plaster-Mold Casting 1123 1125 HOT-WORKING PROCESSES 1102 Investment Casting 1125 Classification of Hot-Working Processes 1103 PLASTIC-MOLDING Rolling 1103 PROCESSES 1126 Forging 1105 Injection Molding 1126 Extrusion 1107 Coinjection Molding 1126 Drawing 1107 Rotomolding 1126 Spinning 1110 Expandable-Bead Molding 1126 Pipe Welding nil Extruding 1126 Piercing 1111 Blow Molding 1126 Thermoforming 1127 COLD-WORKING PROCESSES 1112 Reinforced-Plastic Classification of Molding 1127 Cold-Working Operations 1112 Forged-Plastic Parts 1127 Squeezing Processes 1113 Bending 1114 POWDER METALLURGY 1127 Shearing 1116 Properties of P M Drawing 1118 Products 1127 METAL CASTING AND SURFACE TREATMENT 1128 MOLDING PROCESSES 1120 Cleaning 1128 Sand Casting 1120 Coatings 1130 Centrifugal Casting 1121 Chemical Conversions 1132 INTRODUCTION Metal-forming processes use a remarkable property of metals their ability to flow plastically in the solid state without concurrent deterioration of properties. Moreover by simply moving the metal to the desired shape there is little or no waste. Figure shows some of the metal-forming processes. Metal-forming processes are classified into two categories hot-working processes and cold-working processes. Mechanical Engineers Handbook 2nd ed. Edited by Myer Kutz. ISBN 0-471-13007-9 1998 John Wiley Sons Inc. 1101 1102 METAL FORMING SHAPING AND CASTING Rolling Forging Extruding Steps in spinning Final shape
