Housing for use in a sintering process for the preparation of a rare earth metal magnets and method

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A case according to the present invention is used in a sintering process to produce a rare-earth magnet. The case includes : a body with an opening; a door for opening or closing the opening of the body; and supporting rods for horizontally sliding a sintering plate, on which green compacts of rare-earth magnetic alloy powder are placed. The supporting rods are secured inside the body. At least the body and the door are made of molybdenum.