HOT WALL BELL-TYPE FURNACES AND ASSOCIATED METHODS

Hot wall bell-type furnaces and methods of treating metal and/or ceramic articles. A method of treating a metal/ceramic article includes placing the article with a tray/fixture on a furnace hearth. A retort bell can be placed over the fixture with the article. A furnace bell is then placed over the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Wingens, Thomas, Lefler, Hyrum
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING MECHANICAL ENGINEERING OPEN SINTERING OR LIKE APPARATUS OVENS RETORTS WEAPONS
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Beschreibung
Zusammenfassung:	Hot wall bell-type furnaces and methods of treating metal and/or ceramic articles. A method of treating a metal/ceramic article includes placing the article with a tray/fixture on a furnace hearth. A retort bell can be placed over the fixture with the article. A furnace bell is then placed over the retort bell. A retort pressure in the retort bell can be reduced to a first vacuum pressure, and a support pressure in a plenum space between the retort bell and the furnace bell can be reduced to a second vacuum pressure. The article can be heated to a treatment temperature which can be maintained along with the first vacuum pressure and second vacuum pressure to treat the article to form a treated article. The article can be one or more of a green body to be sintered, a sintered article, and a cast article to be treated by any suitable heat treatment.