Heating – Work chamber having heating means – Having means by which work is progressed or moved mechanically
Patent
1994-10-28
1995-08-22
Argenbright, Tony M.
Heating
Work chamber having heating means
Having means by which work is progressed or moved mechanically
432128, 432234, C21D 118, F27B 928, B65G 4726
Patent
active
054433835
ABSTRACT:
The pusher type furnace comprises an entry chamber (2) associated with a charging device (30) to transfer charge holding devices (a through q) carrying the charges to be heat-treated. The entry chamber is followed by a rectilinear heat treatment chamber (3) and the latter by an exit chamber (4). The entry chamber and the exit chamber may each be separated from the heat treatment chamber by means of doors (15, 16). A pusher device (5) operating in a cyclic mode pushes all charge holding devices in each cycle forward by the length of one charge holding device in the direction of charge travel (X). For separate temperature and atmosphere control in subsequent sections (8, 9 and 10) of the heat treatment chamber (3), two doors (11, 12) are provided. The row of charge holding devices (a through p) is separated into several sets of charge holding devices (31, 32, 33) by means of mobile skid sections (71, 73) moving a downstream set of charge holding devices (31) and an upstream set of charge holding devices (33) away from a central set of charge holding devices (32) to create gaps (34, 35) for the two doors (11 and 12) to close.
REFERENCES:
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patent: 4397451 (1983-08-01), Kinoshita et al.
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patent: 4627814 (1986-12-01), Hattori et al.
patent: 4932864 (1990-06-01), Miyabe
patent: 4966547 (1990-10-01), Okuyama et al.
Argenbright Tony M.
Loi Industrieofenanlagen GmbH
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