Abstract
This paper describes a high-vacuum induction furnace for sintering cemented carbides. The special features of this installation which are described in detail are (a) a dewaxing unit which prevents any wax condensation inside the furnace, (b) a temperature measuring device, which gives reproducible values, withstands the attack of CO and has a lifetime of more than 1000 h, (c) a cooling tower which shortens the cooling-down time by 60–80%, and (d) a newly developed automatic-control unit which permits any temperature and pressure program for sintering cemented carbides in a fully automatic manner. Hydrogen flushing is also automatic so that the furnace has only to be charged and discharged manually.
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