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May 13 - 16, 2008 |
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Extrusion Equipment 070 EE Water Hydraulic Press Control Steve DeMar -- Hauhinco Trading, USA Modern water hydraulic press control is presented: water (95/5) hydraulic versus oil hydraulic control; water hydraulic valve mechanics; water hydraulic proportional control; water hydraulic valve circuitry; and water hydraulic valve sizing. Through pressure drop summation, extrusion speed feasibility is determined by examining net pressure. Water hydraulic theory is demonstrated, highlighting hard alloy press upgrade at Alcoa-Lafayette and soft alloy press upgrade at Alcoa-Cressona. |
