Abstract
Extrusion cutting is a combination of cutting and extrusion producing chips that are of very good quality, being shiny on both sides and ductile. Previous investigations were carried out on a lathe by radially feeding the tool into a disc clamped on a mandrel. It was found that the process can be run continuously and the potentiality of using it to manufacture brass strips was shown. In the present work, a machine for extrusion cutting was built explicitly, driven by a low speed, high torque hydraulic motor. The machine was used to produce brass strips from discs of 400 mm in diameter. Experiments have confirmed earlier finding that the process can be carried out continuously. The quality of extrusion cut brass strips was investigated in terms of ultimate tensile strength, ductility, hardness, thickness variations and surface roughness. It was found that brass strips manufactured by extrusion cutting satisfy the requirements set by standards to strips which are manufactured conventionally.
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