B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
117/120, 32/25
B05D 3/00 (2006.01) B05D 1/18 (2006.01) B05D 3/04 (2006.01) B22D 31/00 (2006.01) B22F 3/26 (2006.01) B27K 3/10 (2006.01) C04B 41/45 (2006.01)
Patent
CA 1165192
ABSTRACT . IMPREGNATION OF POROUS ARTICLES The invention provides an in-line method of impregnating a porous article, particularly a metal casting, which comprises placing the article on a support, placing a cover thereover in sealing relation with support to define an impregnation chamber, applying a reduced pressure to the cover at the upper part thereof, admitting impregnant to the chamber until it at least covers the pores, allowing the pressure to rise to substantially atmospheric, removing excess impregnant from the chamber, and removing the cover from the support. Such a method permits impregnation using a conveyor line system.
373023
Gowling Lafleur Henderson Llp
Ultraseal International Limited
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