Molten metal transfer crucible with external filter

摘要

The molten metal transfer crucible of the present invention filters molten metal during transfer of the molten metal to a receptacle such as a mold. The molten metal transfer crucible of the present invention is fitted with an external removable filter blade. The removable filter blade contains a filter element and is positioned with respect to an inlet in the transfer crucible such that molten metal is filtered by passing through the filter element contained in the blade while the crucible is being filled with molten metal. During operation molten metal can be intermittently back-flushed through the filter element contained in the blade. Back-flushing molten metal through the filter element extends the life of the filter element, and thereby increases the hours the transfer crucible may be operated between blade changes.