| 摘要 |
PROBLEM TO BE SOLVED: To provide a fusing nozzle capable of easily obtaining standard flame to prevent attachment of fusing scrap and slag by suppressing increase of a burner diameter of a nozzle tip, and improving fusing accuracy by throttling the standard flame to high-speed strong frame and increasing a fusing speed. SOLUTION: In this fusing nozzle for the metallic body applying a nozzle shaft center portion as a fuel flow channel, and provided with a primary-side supporting gas flow channel or a secondary-side supporting gas flow channel at its circumference, the primary-side or secondary-side supporting gas flow channel is provided with a fixed spiral throttle slit flow channel and a rotating spiral slit flow channel disposed at the downstream side of the fixed spiral throttle slit flow channel and having the spiral direction opposite to the spiral throttle slit flow channel, a plurality of permanent magnets are arranged at the circumference of a fuel flow channel in a state that S-poles and N-poles are positioned along the nozzle axial direction, and a conical cylindrical ejector discharging and forming the outside air thin film flow at the circumference of the flame from the nozzle tip portion, is connected with the nozzle tip portion. COPYRIGHT: (C)2009,JPO&INPIT
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