Metallurgical apparatus – Having means for contacting a solid metalliferous material... – With heating means – e.g. – flame contact
Patent
1974-08-07
1976-08-03
Dost, Gerald A.
Metallurgical apparatus
Having means for contacting a solid metalliferous material...
With heating means, e.g., flame contact
148 16, C21D 126, C21D 900
Patent
active
039725138
ABSTRACT:
An apparatus for rapid batchwise heating and/or annealing ferrous and non-ferrous materials in piece form has an inlet chamber for the introduction of the material, including an inlet lock and a roller table, with means to close the lock and to evacuate the chamber to a vacuum up to 1 .times. 10.sup..sup.-2 mm Hg; a furnace chamber with a metal bath compartment located underneath, with means to heat it to a metal vapor rising temperature; a lock valve between the inlet lock and the second chamber and means to transfer the material from the inlet chamber to the furnace chamber under evacuation; a second valve located between the furnace chamber and its means to heat it; means to controllably open the second valve on closing of the lock valve; means to evacuate the metal vapors and to disconnect the furnace chamber from the heating means to cool the furnace chamber after annealing to a condensing temperature of the metal; a cooling chamber with an outlet lock and means to evacuate and cool the material below oxidation levels and means to discharge the liquified metal from the furnace chamber to the cooling chamber.
In the process, the furnace is evacuated, the material is introduced into it in batches and exposed to heat treatment by vapors of the boiling metal bath to obtain the desired annealing temperature. After cooling the condensate formed on the heated material is returned to the metal bath and the furnace chamber is free of metal vapors. The discharge of the metal from the metal bath and the escape of metal vapor from the furnace chamber are prevented and washing, rinsing and drying after annealing become unnecessary.
REFERENCES:
patent: 2899192 (1959-08-01), Fritz
patent: 3169158 (1965-02-01), Wigg
patent: 3782705 (1974-01-01), Westeren et al.
Mobius Hans Eberhard
Soraya Sorayapour
Dost Gerald A.
Munz Otto John
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