Heating – Work feeding – agitating – discharging or conveying... – Roll-type conveyor element
Patent
1996-05-14
1998-11-10
Kilner, Christopher
Heating
Work feeding, agitating, discharging or conveying...
Roll-type conveyor element
29895, 266103, F27D 300, B21H 118
Patent
active
058334556
ABSTRACT:
A dry furnace roll design operates at a high temperature environment of a metal heating furnace by arranging weld metal joining a roll sleeve to roll bells at opposite ends in cavities formed in the sidewalls of the furnace. A dense filling of ceramic fiber material is held in each roll bell underlying the weld connection with the roll sleeve by discs. Ceramic fiber material is put into the cavity of the sidewall and held in place by a keeper plate. The masses of weld metal joining the roll sleeve to the roll bells are comprised of TIG weld metal formed in an inert gas. Multi-pass welding is performed while supporting the roll assembly during the welding operation at an angled relation to the horizontal. The roll is rotated in the angled relation to allow the deposition of weld metal in multiple passes and in an accurately controllable manner preferably by the use of a microprocessor to control the positioning of weld electrode. The metal of the roll body is subject to annealing solution heat treating after a predetermined time of service in the high temperature environment of the furnace. The solution annealing reverses embrittlement and restores ductility caused by aging process of the metal at the high operating temperatures.
REFERENCES:
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patent: 2603578 (1952-07-01), Ornitz
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patent: 3070362 (1962-12-01), Young et al.
patent: 3751195 (1973-08-01), Snow
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patent: 5070587 (1991-12-01), Nakahira et al.
Bricmont, Inc.
Kilner Christopher
Poff Clifford A.
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