Carl Kurt Walther Gmbh & Co. Kg

Theodor Heimeier Metallwerk Gmbh

Carl Kurt Walther Gmbh & Co.

Hans Tolle

Carl K Walther

Karl Frech

Hartmut Ludke

A process for the deburring of bonded moldings of granular material, for example, casting sand cores, by coating them in the same operation with a surface layer. The moldings are circulated within an annular vibrator together with an abrasive body medium which contains a powdered coating agent, the medium being preferably deflocculated by an approximately 50% proportion of hard-foam bodies.

Process of deburring moldings made from granular material

Workpieces are ground by rolling them around with grinding bodies and microbodies (7) in a vibratory scouring container (1) while a processing liquid is fed into, and runs out again from, the scouring container. The microbodies run out of the container with the processing liquid, are washed and screened in a device (17) to separate those having dimensions less than a predetermined size. The residual larger microbodies are collected in a storage container (8'). The container (8') is subsequently mounted on a post (10) in place of a similar container (8) and the microbodies are returned in controlled amounts into the scouring container by flushing out through a discharge opening (11) with water.

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Wuppertal, Germany

Hans Tolle