BUTT WELDING METHOD OF STAINLESS STEEL HOT ROLLED STRIP

PURPOSE:To prevent the rupture of butt weld zone during plate pass processing by controlling to that the heat input quantity to be inputted at welding time on the butt part of the preceding strip and succeeding strip of stainless steel hot rolled strips can satisfy the equation. CONSTITUTION:The tail end part of the preceding strip to be passed on the continuous process line of stainless steel hot rolled strip and the tip part of the succeeding strip are butted and welded. In this case, the heat input quantity to be inputted at weld time on the butt part of the preceding and succeeding strips is controlled so as to satify the equation. In the equation y is the heat input quantity at weld time, x the number of repeated bending times. The rupture accident of the weld zone during plate passing is thus cleared off and the stabilized operation of continuous process line can be performed.