Ch15 Metal Extrusion And Drawing Processes
Ch15 Metal Extrusion And Drawing Processes
Ch15 Metal Extrusion And Drawing Processes
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Cold <strong>Extrusion</strong><br />
<strong>Extrusion</strong><br />
Uses s slugs ugs cut cut from o cold co d finished s ed o or hot ot rolled o ed<br />
bars, wire, or plates<br />
Smaller slugs g ( (≤ ( ≤ 40 mm or 1.5”) ) are sheared; ;<br />
ends squared if necessary<br />
Larger slugs are machined to specific lengths<br />
Stresses on tool dies are very high<br />
Lubrication is critical, , especially p y with steels<br />
Apply phosphate phosphate-conversion conversion coating on workpiece,<br />
followed by soap or wax (Sec. 34.10)
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