| 摘要 |
PROBLEM TO BE SOLVED: To provide a continuous hot dip coating equipment capable of consistently and easily depositing a coating layer of a desired composition even when a strip is continuously hot-dipped in a molten metal consisting of two metals. SOLUTION: The continuous hot dip coating equipment comprises first composition metal feed means 14a-14c for feeding zinc 101 to an aerial pot 11, second composition metal feed means 15a-15c for feeding aluminum 102 to the aerial pot 11, an analyzer 18 for measuring the concentration of the composition metal of a molten metal 100 in the aerial pot 11, and a control device 19 which obtains the concentration of the aluminum 102 in the molten metal 100 in the aerial pot 11 in which the concentration of aluminum in a coating layer deposited on a surface of a strip 1 becomes an objective value from the pre-obtained correlation, controls the first and second composition metal feed means 14a-14c, 15a-15c based on information from the analyzer 18 so as to achieve the obtained concentration, and adjusts the feed of the zinc 101 and the aluminum 102 to be fed into the aerial pot 11. COPYRIGHT: (C)2007,JPO&INPIT
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