AN APPARATUS AND A METHOD FOR UNIFORMING THE TEMPERATURE AT EDGE OF PLATING STRIP IN COLD MILL LINE

摘要

In order to enhance corrosion resistance and elegant appearance ever in the cold-rolled steel or surface treated in accordance with the requirements of the customer edge temperature equalizing apparatus and method of the plated steel sheet is provided. ; edge temperature equalizing apparatus of the plated steel sheet is a variable local heating-up of the batch as coated steel strip edge portions on an edge of the plated steel sheet, having a plurality of heating means disposed in the width direction of the coated steel strip ever done, and wherein the heating means is characterized by heating the steel sheet edge portions to the flameless system and method through which the steel sheet closer to an edge of the coated steel strip increasing the heating capacity applied to sikieo characterized by maintaining a uniform temperature distribution of the steel sheet edge portions. ; According to the present invention, such as In this, the thickness of the plating, while the plated steel sheet is passed through an air knife After re-adjusted and the temperature distribution in the width direction of the steel sheet during heating is caused to be non-uniform plating defects, various surface-coated color to effectively prevent a defect factor such as deviation occurs sikieo plated steel sheet or strip, particularly, the plating quality of the relevant automotive steel it is possible to obtain an improved effect than to improve the quality.