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Machine translation
1. (WO1980002658) METHOD OF MAKING A CAVITY FOR HOLDING AN OBJECT SUCH AS A FOUNDRY RISER SLEEVE,AND CAVITY FORMER AND SLEEVE FOR USE THEREWITH
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/002658    International Application No.:    PCT/GB1980/000074
Publication Date: 11.12.1980 International Filing Date: 28.04.1980
IPC:
B22C 9/08 (2006.01)
Applicants:
Inventors:
Priority Data:
2923393 08.06.1979 DE
Title (EN) METHOD OF MAKING A CAVITY FOR HOLDING AN OBJECT SUCH AS A FOUNDRY RISER SLEEVE,AND CAVITY FORMER AND SLEEVE FOR USE THEREWITH
(FR) METHODE DE FABRICATION D"UNE CAVITE DE MAINTIEN D"UN OBJET TEL QU"UN MANCHON DE MONTEE, GABARIT DE CAVITE ET MANCHON UTILISE AVEC CELUI-CI
Abstract: front page image
(EN)A cavity in a body of particulate moulding material has at least one rib-like formation for gripping an object received in the cavity. In the case of a metal casting mould a riser sleeve (1) is inserted into a cavity (9) in the top part of the mould and the cavity (9) is produced by means of a tapered former the exterior of which has a plurality of radially spaced apart recesses extending between the top and towards the bottom of the former and which has a negative taper from bottom to top. The depth of the recesses is such that circles geometrically inscribed inside the base of the recesses have diameters smaller than the corresponding mean outside diameters less three times the standard deviation of the riser sleeve (1) to be used. The recesses form ribs (11) from the moulding sand and the ribs (11) grip the outer surface of the sleeve (1).
(FR)Une cavite dans un corps d"un materiau de moulage particulaire possede au moins une nervure pour assujettir un objet recu dans la cavite. Dans le cas d"un moule de coulee de metal, un manchon de montee (1) est introduit dans une cavite (9) dans la partie superieure du moule et la cavite (9) est formee au moyen d"un calibre conique dont l"exterieur presente une pluralite d"evidements radialement espace s"etendant entre le haut et vers le bas du calibre et qui possede un cone negatif du bas vers le haut. La profondeur des evidements est telle que des cercles geometriquement inscrits a l"interieur de la base des evidements ont des diametres inferieurs aux diametres exterieurs moyens correspondants moins trois fois la deviation standard des manchons de montee (1) a utiliser. Les evidements forment des nervures (11) a partir du sable de moulage et les nervures (11) assujettissent la surface exterieure du manchon (1).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)