Archives: Post Types

Grain growth

An increase in the size of the grains of a metal with a proportional reduction of the number of grains.
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Grain flow

Fiber-like lines appearing on polished and etched sections of forgings that are caused by orientation of the constituents of the metal in the direction of working during forging. Grain flow…
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Grain

An individual crystal in a polycrystalline metal or alloy.
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Gibs

Guides or shoes that ensure the proper parallelism, squareness, and sliding fit between press components such as the ram and the frame. They are usually adjustable to compensate for wear…
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Gathering stock

Any operation whereby the cross-section of a portion of the forging stock is increased above its original size.
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Gate (sprue)

A portion of the die that has been removed by machining and permits the bar or tongs to be closer to the impression without being smashed.
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Fullering

Reducing the cross section of a forging between ends of stock.
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Fuller (fullering impression)

Portion of the die that is used in hammer forging primarily to reduce the cross section and lengthen a portion of the forging stock. The fullering impression is often used…
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Friction factor

A factor that, when multiplied by the flow stress, expresses the friction shear stress.
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