HOT SCARFER

PROBLEM TO BE SOLVED: To prevent trouble of oxygen gas blowing off from a gap between adjacent block units, by effectively suppressing thermal deformation at the leading-edge part of a hot scarfer over a long period. SOLUTION: In the hot scarfer, a lower block 2 equipped with a fuel gas jetting port...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TSUBOI SHUICHI, YOSHIKAWA SATORU
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS POWDER METALLURGY SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To prevent trouble of oxygen gas blowing off from a gap between adjacent block units, by effectively suppressing thermal deformation at the leading-edge part of a hot scarfer over a long period. SOLUTION: In the hot scarfer, a lower block 2 equipped with a fuel gas jetting port 4 and an upper block 3 equipped with a fuel gas jetting port 10 are arranged with an oxygen gas passage 9 formed in-between. At the leading-edge part 20 projecting at least further than the tip end part 5 of the fuel gas jetting port 4 of the lower block 2, there is formed a cooling water channel 21 extending in the width direction of the lower block 2. A distance between the inner face of the cooling water channel 21 and the surface of the leading-edge part is set at 3-15 mm. It is desirable that the upper block 3 is similarly structured. COPYRIGHT: (C)2010,JPO&INPIT