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Open-die drop forging (with two dies) of an ingot to be further processed into a wheel A large 80 ton cylinder of hot steel in an open-die forging press, ready for the upsetting phase of forging. Open-die forging is also known as smith forging. [8] In open-die forging, a hammer strikes and deforms the workpiece, which is placed on a stationary ...
The Alcoa 50,000-ton forging press. The Heavy Press Program was motivated by experiences from World War II. Nazi Germany held the largest heavy die forging presses during the war, and translated this advantage into high performance jet fighters. Because of the shortage of aluminum, German aircraft manufacturers used forged magnesium structural ...
The east side of the press, in 1985. A die being inserted into the east side of the press. The Alcoa 50,000 ton forging press is a heavy press operated at Howmet Aerospace's Cleveland Operations. It was built as part of the Heavy Press Program by the United States Air Force.
Four-die forging device is a special forging tool designed for manufacturing forgings with long axis by four-side radial forging method in conventional open-die hydraulic forging press. A similar stand-alone machine is known as a radial forging machine .
The tools that are used, dies and punches, come in many different shapes and sizes, as well as materials. Examples of these shapes are flat and v-shaped which are used for open-die forging, and single or multiple-impression dies used for closed die forging. The designs for the dies have many aspects to them that must be considered.
Press forging can be used to perform all types of forging, including open-die and impression-die forging. Impression-die press forging usually requires less draft than drop forging and has better dimensional accuracy. Also, press forgings can often be done in one closing of the dies, allowing for easy automation.
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