B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 19/00 (2006.01) F01N 13/10 (2010.01) B22C 1/00 (2006.01) B22C 1/22 (2006.01) B22C 9/00 (2006.01) B22D 19/08 (2006.01) F02B 75/22 (2006.01) F02F 1/24 (2006.01) F02F 1/42 (2006.01) F02F 7/00 (2006.01) F02B 3/06 (2006.01) F02B 75/02 (2006.01) F01N 7/10 (2006.01)
Patent
CA 2109309
A casting for conducting high temperature gases, such as an internal combustion engine cylinder head (20) having to pass combustion exhaust gases therethrough, and a method of manufacturing the same wherein the casting includes a main body portion (20) and a high strength steel exhaust port liner (26) with a heat insulating chamber (62) therebetween filled with hollow ceramic particles. The liner (26) is cast in place thereby affixing the liner to the casting by means of diffusion bonding (52, 54) during the casting of the cast article. The liner (26) and a low heat conductivity insulation blanket of hollow ceramic particles surrounding the liner (26) and an annular steel ring (58), which serves as a thermally expanding seal between the casting and liner which also allows axial displacement between the casting and liner, are all provided as a unitary mold core prior to the casting of the cast article.
Pièce coulée permettant d'acheminer des gaz à haute température, telle qu'une culasse (20) de moteur à combustion interne devant assurer l'acheminement des gaz de combustion, et procédé d'élaboration de ladite pièce, laquelle comporte un corps principal (20) et un chemisage (26) à haute résistance des conduits d'évacuation des gaz d'échappement avec une isolation thermique (62), entre ce chemisage et le corps principal, rempli de particules de céramique. Le chemisage (26) est coulé en place par un procédé de corroyage par diffusion (52, 54) pendant le coulage de la pièce. Le chemisage (26), l'isolant à faible conductivité thermique constitué par les particules de céramique creuse entourant le chemisage (26) ainsi que l'anneau d'acier (58) qui sert de joint se dilatant à la chaleur entre la pièce moulée et le chemisage et qui permet également un déplacement longitudinal entre chemisage et pièce moulée, sont inclus dans le primaire de moulage avant la réalisation de la pièce coulée.
Hinkle Stanley Joseph
Keelan Thomas Michael
Detroit Diesel Corporation
Smart & Biggar
LandOfFree
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