Cast recuperator tube

Details Cast recuperator tube Cast recuperator tube

B - Operations, Transporting

22

D

22/166

B22D 25/02 (2006.01) B22C 9/26 (2006.01) F28F 3/04 (2006.01) F28F 21/08 (2006.01)

Patent

CA 1185067

- 10 - CAST RECUPERATOR TUBE Abstract of the Disclosure The method of casting a plate type recuperative heat exchange envelope (8) that encloses a hollow space therein in a single casting operation. A sand core (18) with a heat sensitive binder therein defines the hollow space within the envelope. The sand core (18) is supported by end extensions (30) and lateral protuberances (26) which rest on the sides of a sand mold (10) to provide a space (25) therebetween that is subsequently filled with molten metal to comprise an envelope casting. Lateral openings (31) through the envelope casting produced by the lateral protuberances (26) and end openings (33) produced by the end extensions (30) provide passageways for venting gases produced within the sand core during the casting operation, and after completion of the casting operation the same openings 31 in the envelope assist in the removal of the sand core therefrom. The lateral openings (31) art subsequently plugged while the end openings (33) are maintained open to direct the flow of fluid therethrough.

396218

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