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The press, circa 1985. The Wyman-Gordon 50,000-ton forging press is a forging press located at the Wyman-Gordon Grafton Plant that was built as part of the Heavy Press Program by the United States Air Force. It was manufactured by Loewy Hydropress of Pittsburgh, Pennsylvania and began operation in October, 1955. [1]
The Wyman-Gordon 50,000-ton forging press. The Heavy Press Program was a Cold War-era program of the United States Air Force to build the largest forging presses and extrusion presses in the world. These machines greatly enhanced the US defense industry's capacity to forge large complex components out of light alloys, such as magnesium and ...
Equipment includes hydraulic vertical die-forging presses from 1250 to 30000 ton-force, hydraulic forging press with capacity of 6000 ton-force, radial ring forging press. 1500 items of die-forged products, 1200 items of forged products and 1600 types of rolled rings from 0.1 kg to 3000 kg are already available.
The 50,000-ton press was the largest machine in the world at the time, 10 stories high and with foundations extending 100 ft (30 m) into bedrock. In 1983, the American Society of Mechanical Engineers designated the 50,000-ton forging press in North Grafton as a National Historic Mechanical Engineering Landmark. [6]
Press tools are commonly used in hydraulic, pneumatic, and mechanical presses to produce the sheet metal components in large volumes. Generally press tools are categorized by the types of operation performed using the tool, such as blanking, piercing , bending , forming , forging , trimming etc.
Mechanical presses are faster than their hydraulic counterparts (up to 50 strokes per minute). Their capacities range from 3 to 160 MN (300 to 18,000 tons). Hydraulic presses use fluid pressure and a piston to generate force. The advantages of a hydraulic press over a mechanical press is its flexibility and greater capacity.
The hydraulic press depends on Pascal's principle.The pressure throughout a closed system is constant. One part of the system is a piston acting as a pump, with a modest mechanical force acting on a small cross-sectional area; the other part is a piston with a larger area which generates a correspondingly large mechanical force.
Wyman-Gordon Grafton Plant, formerly known as Air Force Plant 63, is a plant of Wyman-Gordon located in North Grafton, Massachusetts.It was purchased by Wyman-Gordon in 1982 from the United States Air Force, although the company had been operating as a contractor for the plant since its establishment.