Partial rolling of weld joints in thin steel strip to eliminate excess thickness - with heating of weld seam under tension and rolling to basic strip thickness

摘要

Process and equipment is for partial rolling of weld joints in thin cold rolled strip to eliminate excess thickness, where weld joints (e.g. in repair lines, galvanising lines etc). are rolled down with plastic elongation in a modified roll stand under strip tension to the basic strip thickness. The weld seam is pref. preheated under light strip tension to avoid distortion and is then rolled with increased strip tension in a fixed roll stand. USE/ADVANTAGE - For improved rolling down excess thickness in welded joints in thin cold rolled steel strip (e.g. electro-strip), giving a favourable weld seam structure and improved strip quality.