Method of impregnating porous workpieces
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United States of America Patent
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Mar 2, 2004
Grant Date -
Nov 8, 2001
app pub date -
May 31, 2001
filing date -
Dec 9, 1998
priority date (Note) -
Expired
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Abstract
In order to impregnate a porous workpiece with a liquid impregnating agent, the pre-manufactured workpiece is arranged in an injection mould or diecasting mould and the liquid impregnating agent is introduced into the mould with the aid of a commercially available injection moulding or diecast moulding apparatus. To limit the need for post impregnation cleaning and/or shaping, the mould cavity is configured to closely fit the shape of the pre-manufactured workpiece. The impregnating agent may be a natural or synthetic lubricant, a plastic or, more commonly, a molten metal or metal alloy.
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