公开(公告)号：US3786164A

公开(公告)日：1974-01-15

申请号：US3786164D

申请日：1972-04-24

Applicant: HINTENBERGER K

Inventor： HINTENBERGER K

IPC: A61C13/20 ,  B01J6/00 ,  F27D11/02 ,  H05B1/00

CPC classification number: B01J6/00 ,  A61C13/20 ,  F27D11/02

Abstract: Ceramic facings are filed in a refractory lined oven having a pre-heating zone and a firing zone, the facings being charged into the pre-heating zone on a carriage which may be moved into the firing zone. The oven chamber may be selectively evacuated through a main conduit which connects the lower part of the oven housing to the intake of a vacuum pump or supplied with inert gas from a supply thereof. For this purpose, branch conduits lead from the vacuum pump and the inert gas supply to the main conduit, and valves in the branch conduits may be selectively operated. A venting valve is mounted in the upper part of the oven housing for venting inert gas from the oven chamber.