METHOD FOR PREVENTING SAW EDGE FOR BAND STEEL

摘要

PURPOSE:To prevent generation of saw edge by providing vertical rolls and horizontal rolls at nearly the same place of a band steel and performing correction of rolling down in the directions of width and thickness at the same time and thereby forming the shape of the band steel immediately after side trimming. CONSTITUTION:A pair of forming rolls 2 each consisting of a vertical roll 21 and two horizontal rolls 22 are provided on both sides and opposed position of a band steel 4 and brought into contact with the edge from above, below and side simultaneously. The same width with the trimming width is set as a correcting width formed by left and right vertical rolls 21, and the same thickness with the process prior to shearing is set beforehand to the upper and lower horizontal roll22. A pressing roll 23 is provided to prevent bending of the band steel 4 due to pressing force of an edger roll. If required, a horizontal roll for correcting plate thickness direction can be installed succeeding to above-mentioned forming rolls 2 covering the direction of whole length of the band steel 4.