E - Fixed Constructions – 01 – B
Patent
E - Fixed Constructions
01
B
38/1
E01B 31/18 (2006.01) C21D 1/667 (2006.01) C21D 9/04 (2006.01) C21D 9/50 (2006.01)
Patent
CA 1222623
APPARATUS FOR QUENCHING BUTT-WELDED PORTION OF RAIL ABSTRACT OF THE DISCLOSURE An apparatus for quenching a butt-welded portion of a rail, comprising: an inverse U-shaped cooling box for covering from above throughout a butt-welded portion of a rail and quenching the butt-welded portion by cooling air, the cooling box being divided into a head cooling chamber, a web left cooling chamber, and a web right cool- ing chamber each having a plurality of cooling air nozzles directed toward the butt-welded portion; a cooling air supply mechanism for supplying cooling air to the cooling box, the cooling air supply mechanism comprising a cooling air source, a solenoid value provided in the middle of a cooling air supply pipe, a head cooling air regulating valve, a web cooling air regulating valve, and a valve opening controlling means for controlling, in accordance with a previously set program, an opening of each of the head cooling air regulating valve and the web cooling air regulating valve; and a cooling box holding mechanism for releasably holding the cooling box at a prescribed position so as to cover throughout the butt-welded portion of the rail.
459150
Morishige Eiji
Nomura Hirokazu
Sato Yukihiko
Macrae & Co.
Nippon Kokan Kabushiki Kaisha
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