4th_week-5 - closed-die forging without flash definition :...

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7/56 ▷ closed-die forging without flash definition : billet with carefully controlled volume is deformed (hot or cold) by a punch in order to fill a die cavity without loss of material. applications : precision forgings, hollow forgings, fittings, elbows, Tee's, etc.
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8/56 ▷ closed-die forging with flash definition : a billet is formed (hot) in dies such that the flow of metal from the die cavity is restricted. The excess material is extruded through a restrictive narrow gap and appears as flash around the forging at the die parting line applications : forgings for automobiles, trucks, tractors, off-road equipment
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9/56 ▷ coining definition : a closed-die forming operation, usually performed cold, in which all surfaces of the work are confined or restrained, resulting in a well- defined imprint of the on the workpiece. applications : metallic coins, decorative items, metallions and metal buttons, sizing of engine components.
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10/56 ▷ electro-upsetting definition : Electro-upsetting is the hot forming process of gathering a large amount of material at one end of a round bar by heating the bar end electrically and pushing it against a flat anvil or shaped die cavity applications : preforms for finished forgings
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11/56 ▷ forward extrusion forging definition : a punch compresses a billet (hot or cold) confined in a container so that the billet material flows through a die in the same direction as the punch applications : stepped or tapered solid shafts, tubular parts with conical or other non round holes
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12/56 ▷ backward extrusion forging definition : a moving punch applies a steady pressure to a slug (hot or cold) confined in a closed die, and forces the metal to flow around the punch in a direction opposite the direction of punch travel applications : hollow parts with a closed end, cupped parts with holes that are cylindrical, conical or of other shapes
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13/56 ▷ hobbing definition : a process of indenting or coining an impression into a cold orho t die block by pressing with a punch
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14/56 ▷ isothermal forging definition : a forging process wherein the dies and the forging stock are at approximately the same high temperature applications : net- and near-net forgings for aircraft industry
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15/56 ▷ nosing definition : a hot or cold forming process in which the open end of a shel lor tubular component is closed by axial pressing with a shaped die. applications : forming of open ends of ammunition shells, forming of gas
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▷ open-die forging definition : a hot forming process in which a metal is shaped by hammering or pressing between flat or simple contoured dies. applications : forging ingots, large and bulky forgings, preform for finished
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4th_week-5 - closed-die forging without flash definition :...

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