Metal treatment – Compositions – Heat treating
Patent
1986-09-15
1988-07-05
Brody, Christopher W.
Metal treatment
Compositions
Heat treating
148134, 148157, C21D 126
Patent
active
047552360
ABSTRACT:
A convection diffuser and charge support system for an annealing furnace utilizes a diffuser base assembly that includes a vane-carrying center casting which underlies a charge support plate, and which is perimetrically surrounded by a pair of outer and inner cooling rings. The components of the diffuser base assembly cooperate to define an array of horizontally extending gas circulation passages that are shielded from above by the charge support plate. The horizontal passages extend among a plurality of upstanding heat exchange fins that are carried by the inner cooling ring, and terminate in upwardly extending outer end regions that are defined by grooves formed in the outer cooling ring. A centrifugal fan draws hot gases through a central opening in the charge support plate and conveys the gases radially outwardly through the horizontally extending gas flow passages. The gases flow outwardly through the horizontal passages, among the fins of the inner cooling ring, and are diverted upwardly by the grooves of the outer cooling ring for movement along generally helical flow paths about a charge of material being annealed. The outer cooling ring is provided with a depending, perimetrically extending skirt. In an annealing process, cooling of the hot gases within the furnace enclosure is carried out in a two stage procedure that is initiated sufficiently gradually to avoid collapse of the positive pressure atmosphere within the furnace enclosure.
REFERENCES:
patent: 4310302 (1982-01-01), Thekdi et al.
Brody Christopher W.
Burge David A.
LandOfFree
Method of annealing using diffuser system for annealing furnace does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of annealing using diffuser system for annealing furnace , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of annealing using diffuser system for annealing furnace will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2330580