Method and apparatus for producing one or more hollow sand...

Details Method and apparatus for producing one or more hollow sand... Method and apparatus for producing one or more hollow sand...

B - Operations, Transporting

22

C

22/122, 22/159

B22C 9/02 (2006.01) A61C 13/00 (2006.01) B22C 15/20 (2006.01) B22C 15/24 (2006.01)

Patent

CA 1063772

ABSTRACT OF THE DISCLOSURE A method for producing one or more hollow sand cores suitable for casting moulds by means of a bipartite core box defining a mould cavity includes inserting a pipe into the cavity. Sand is thrown or blown from the pipe substantially radially towards the walls of the cavity. The inner end of the pipe during sand feeding is moved axially through the cavity. A substantially conical spreader can be arranged opposite the inner end of the pipe whereby the flow of sand is deflected towards the walls.

255769

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