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Wire drawing is a metalworking process used to reduce the cross-section of a wire by pulling the wire through one or more dies. There are many applications for wire drawing, including electrical wiring, cables, tension-loaded structural components, springs, paper clips, spokes for wheels, and stringed musical instruments.
The firm grew rapidly through the 1840s expanding its range to include flour machines and other agricultural products and by 1848 there were 80 employees. What propelled the firm to a different level was the development of the electric telegraph, which required huge quantities of wire. In 1850 the first undersea cable laid across Channel and ...
Drawing is classified into two types: sheet metal drawing and wire, bar, and tube drawing. Sheet metal drawing is defined as a plastic deformation over a curved axis. For wire, bar, and tube drawing, the starting stock is drawn through a die to reduce its diameter and increase its length.
Rods and bars were either sold, or rods were used to make wires up to 0.0056 inches thin. The wire train started with nine 8 and 10-die tandem drawing machines, followed if desired by one 13-die machine, followed if desired by one of twenty up-to-16-dies machines for the finest wire. Intermediate anneals as necessary.
The first commercially available NC machine built as a wire-cut EDM machine was manufactured in the USSR in 1967. Machines that could optically follow lines on a master drawing were developed by David H. Dulebohn's group in the 1960s at Andrew Engineering Company [9] for milling and grinding machines. Master drawings were later produced by ...
It was created in 1954, during the agricultural reconstruction period of the country. After an initial period dedicated to the production of wire-drawing machines for irrigation pipes, in 1957 Ferrari took part in the Verona exhibition with its first agricultural machine: the two-wheel tractor MC 57, which carries the date of its birth.
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