EP 0092690 A1 19831102 - Molding core for casting engine cylinder block.
Title (en)
Molding core for casting engine cylinder block.
Title (de)
Formkern für das Giessen eines Motorzylinderblockes.
Title (fr)
Noyau de moulage pour la coulée d'un bloc-cylindres de moteur.
Publication
Application
Priority
JP 6638582 A 19820422
Abstract (en)
A core to be used in cooperation with a mold, for casting an engine cylinder block is made in a single piece. The single piece core comprises a main portion and at least one evaporative pattern (18). The main portion has a shape for forming one or more cylinder bore and a crank chamber (15) of a cylinder block. The evaporative pattern has the same shape as a main bearing portion which is to be formed in a cylinder block and includes a main bearing housing, ribs and lubricating oil passages. The evaporative pattern is embedded in the main body (16), and is made of a material such as foamed polystyrene. When heat is applied, the evaporative pattern dissipates and leaves a cavity in the main body of the core. When casting, this cavity is filled with a molten metal and the main bearing portion is formed in the casting.
IPC 1-7
IPC 8 full level
B22C 9/04 (2006.01); B22C 9/10 (2006.01); B22C 9/24 (2006.01)
CPC (source: EP)
B22C 9/046 (2013.01); B22C 9/10 (2013.01); B22C 9/103 (2013.01)
Citation (search report)
- [Y] DE 3018782 A1 19801218 - DEERE & CO
- [Y] DE 2746233 A1 19780420 - DEERE & CO
- [A] AT 262524 B 19680610 - GRUENZWEIG & HARTMANN [DE]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0092690 A1 19831102; AU 1362983 A 19831117; JP S58184040 A 19831027
DOCDB simple family (application)
EP 83103190 A 19830330; AU 1362983 A 19830418; JP 6638582 A 19820422