| 摘要 |
PURPOSE: A method for controlling tension of continuous galvanizing line used to produce zinc steel sheet of high quality in a method for manufacturing galvanized steel sheet by adhering atomized zinc particles onto steel sheet using electrostatic force generated by high voltage electrode is provided. CONSTITUTION: In an interlocking driving control method of vector motor of galvanizing facility at the front of helper rolls inside heating furnace of which a speed master bridle roll is installed, and at the rear of the helper rolls inside the heating furnace of which a tension sensor is installed, the method for controlling tension in continuous process line comprises first step of performing control of the speed master bridle roll by speed control of 1 to 3% of droop rate and current limit control (CLC); second step of controlling a plurality of helper rolls positioned in front on the basis of position of the tension sensor by speed control of 3.5 to 4% of droop rate and current limit control; and third step of controlling a plurality of helper rolls and hot bridle roll positioned at the rear of the tension sensor by performing speed control of 5 to 5.5% of droop rate and tension control by the tension sensor side by side.
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