1.1 Background

Today, systematically designed forging processes are being performed in controlled presses and hammers to produce forged shapes with a high degree of dimensional accuracy and structural integrity. Forgings range in size from very small, weighing only a few grams, such as the parts shown in Figure 1-1, to component products weighed in tons, such as the 450,000 pound generator shaft Figure 1-2.

Figure 1-1 The forging process is capable of economically producing very small parts in large quantities

Figure 1-2 This 450,000 pound generator shaft was produced from an open die forging.

The term forging is applied to several processes in which a piece of metal is shaped to the desired form by plastic deformation of a simple starting form such as bar, billet, bloom or ingot. The energy that causes deformation is applied by a hammer, press, upsetter or ring roller, either alone or in combination. The shape is imparted by the tools that contact the workpiece and by careful control of the applied energy.

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Today, systematically designed forging processes are being performed in controlled presses and hammers to produce forged shapes with a high degree of dimensional accuracy and structural integrity. Forgings range in size from very small, weighing only a few grams, such as the parts shown in Figure 1-1, to component products weighed in tons, such as the 450,000 pound generator shaft Figure 1-2.

Figure 1-1 The forging process is capable of economically producing very small parts in large quantities

Figure 1-2 This 450,000 pound generator shaft was produced from an open die forging.

The term forging is applied to several processes in which a piece of metal is shaped to the desired form by plastic deformation of a simple starting form such as bar, billet, bloom or ingot. The energy that causes deformation is applied by a hammer, press, upsetter or ring roller, either alone or in combination. The shape is imparted by the tools that contact the workpiece and by careful control of the applied energy.

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Today, systematically designed forging processes are being performed in controlled presses and hammers to produce forged shapes with a high degree of dimensional accuracy and structural integrity. Forgings range in size from very small, weighing only a few grams, such as the parts shown in Figure 1-1, to component products weighed in tons, such as the 450,000 pound generator shaft Figure 1-2.

Figure 1-1 The forging process is capable of economically producing very small parts in large quantities

Figure 1-2 This 450,000 pound generator shaft was produced from an open die forging.

The term forging is applied to several processes in which a piece of metal is shaped to the desired form by plastic deformation of a simple starting form such as bar, billet, bloom or ingot. The energy that causes deformation is applied by a hammer, press, upsetter or ring roller, either alone or in combination. The shape is imparted by the tools that contact the workpiece and by careful control of the applied energy.

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