Metallurgical apparatus – Means treating a continuum of work – With heating means
Patent
1993-03-23
1994-11-01
Wyszomierski, George
Metallurgical apparatus
Means treating a continuum of work
With heating means
266111, 266252, C21D 956
Patent
active
053602021
ABSTRACT:
A blackening treating furnace includes a soot generation burner for blowing an incomplete combustion flame toward a surface of a cold-rolled stainless steel strip moving continuously through the furnace. A pair of secondary air nozzles installed at positions enclosing the incomplete combustion flame blow secondary air toward the surface of the stainless steel strip in directions perpendicular thereto or in directions slightly inclined toward the middle of the incomplete combustion flame. A flame guide air nozzle is installed between the pair of secondary air nozzles and an exhaust duct for drawing and discharging the combustion reaction flame of the incomplete combustion flame and secondary air along the direction of movement of the stainless steel strip. The flame guide air nozzle injects flame guide air toward the combustion reaction flame in a direction perpendicular to the direction of movement of the stainless steel strip or in a direction inclined thereto. The furnace is installed at the upstream side of a continuous annealing furnace and deposits soot on the surface of the stainless steel strip efficiently, uniformly and stably, so that the cold-rolled stainless steel strip can be annealed continuously.
REFERENCES:
patent: 4950334 (1990-08-01), Nishioka et al.
patent: 5225144 (1993-07-01), Nanda et al.
patent: 5238229 (1993-08-01), Adachi et al.
Patent Abstracts of Japan, vol. 13, No. 362 (C-625)(3710) 14 Aug. 1989.
Chugai Ro Co. Ltd.
Nisshin Steel Co. Ltd.
Wyszomierski George
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