Drawing of rods, wires and tubes
Drawing of rods, wires and tubes
Drawing of rods, wires and tubes
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Moving m<strong>and</strong>rel drawing<br />
• Draw force is transmitted to the metal by the pull on the exit<br />
section <strong>and</strong> by the friction forces acting along the tube -m<strong>and</strong>rel<br />
interface.<br />
• minimised friction.<br />
• V m<strong>and</strong>rel = V tube<br />
• The m<strong>and</strong>rel also imparts a smooth inside finish surface <strong>of</strong><br />
the tube.<br />
• m<strong>and</strong>rel removal disturbs dimensional tolerance.<br />
Suranaree University <strong>of</strong> Technology Tapany Udomphol<br />
Jan-Mar 2007
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