APPARATUS FOR RAPIDLY AND INTSTANTLY HEATING AND ALLOYING EDGES OF HOT DIP PLATED STRIP WHICH MOVES WITH HIGH SPEED

摘要

A heating apparatus for instantly and rapidly heating and alloying both edges of a hot dip coated strip is provided to increase temperature of the edges of the hot dip coated strip that proceeds at a high speed by increasing straightness of a flame, and perform an instantaneous partial heating process of the hot dip coated strip accurately and sufficiently by instantly and automatically controlling positions or movements of burners at both sides of the coated strip within a short time. A heating apparatus for instantly and rapidly heating and alloying edges of a hot dip coated strip(400) comprises: burners(314-1,314-2) disposed oppositely to both edges of a hot dip coated strip that proceeds into an alloying furnace above a hot dip coating bath to instantly heat the both edges of the hot dip coated strip by generating a straight flame using a water electrolyzing gas; a laser sensor(321) for detecting positions of the edges of the hot dip coated strip to track width of the hot dip coated strip; a burner moving device for moving the burners side to side in the width direction of the hot dip coated strip, and moving the burners forward and backward in the direction of a distance between the hot dip coated strip and the burners; and a control part(330) for controlling the operation of the burner moving device to allow the burners to automatically track the edges of the hot dip coated strip according to detection results of the laser sensor. The heating apparatus further comprises: a burner moving device casing(310) for housing the burners and the burner moving device; a ultrasonic sensor(322) for sensing vibration of the strip during the fracture of the hot dip coated strip; a gas supply part(100) including a gas generator(101) for generating the water electrolyzing gas generated by electrolysis of water to supply the water electrolyzing gas to the burners; a flow supply part(200) for supply water required for water electrolysis to the gas supply part and supplying cooling water to the gas supply part to cool the gas supply part; burner flow control valves(311) for controlling flow rate of the water electrolyzing gas supplied to the respective burners; burner flame igniters(312) for igniting flames of the respective burners; and sensors(313) for sensing whether the burners have been ignited or not.