A metal member to be cast-wrapped and a method for...

Details A metal member to be cast-wrapped and a method for... A metal member to be cast-wrapped and a method for...

B - Operations, Transporting

22

D

B22D 19/00 (2006.01) B22D 19/08 (2006.01)

Patent

CA 2383964

A metal member to be cast-wrapped by a metal cast article, a manufacturing method thereof and a metal cast article including the metal member cast-wrapped are provided. A hollow cylindrical metal member having an outer surface with projections to be cast-wrapped by a metal cast article is manufactured in such a manner that a hollow cylindrical metal raw material 13 is inserted in a die 17 having a inner peripheral surface with longitudinal grooves of a depth H and a width W, and the hollow cylindrical metal raw material 13 is subjected to hot-extrusion.

La présente invention concerne un élément métallique inséré dans une pièce métallique coulée, un procédé de fabrication de l'élément métallique inséré et une pièce métallique coulée qui permet d'introduire l'élément métallique inséré dans cette dernière. Dans ce procédé, un élément (19) métallique inséré cylindrique et creux est fabriqué avec une partie dépassant de la surface extérieure qui est insérée dans la pièce métallique coulée, un matériau (13) métallique cylindrique et creux est inséré dans une filière (17) pourvue d'une rainure d'une profondeur (H) et d'une largeur (W) formée radialement dans sa surface périphérique interne et une opération d'extrusion à chaud est effectuée sur le matériau (13) métallique cylindrique et creux.

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