CONTINUOUS HOT DIP METAL COATING APPARATUS FOR STEEL STRIP

PURPOSE:To prevent the adhesion of dross to a steel strip and to make the surface of a plated steel sheet attractive by providing prescribed straightening plates to the rising part of a steel strip in a bath at the time of continuously producing a hot dip metal coated steel sheet. CONSTITUTION:The direction of advance of a steel strip 1 is changed upward by means of a sink roll 4 immersed in a molten tank 2, and the coating weight of the molten metal is regulated by a wiping means in the position above the above-mentioned tank 2. A couple of straightening plates 6 having a width larger than that of the steel strip 1 is dispersed in the rising part of the above steel strip 1 from a molten metal bath 3. Respective upper ends of the straightening plates 6 are located practically in the molten metal bath 3 surface, and also these straightening plates 6 are disposed in a manner to be opposed to each other so that they are parallel and in close vicinity to both sides of the passing steel strip 1. Further, respective heights of the parts, existing in the position below the molten metal bath surface, of the straightening plates 6 and a spacing between each straightening plate 6 and the steel sheet 1 are regulated to >=50mm and