CONTINUOUS ANNEALING EQUIPMENT

摘要

This invention provides continuous annealing equipment which can eliminate temperature non-uniformity along the widthwise or transverse direction of a steel strip at an exit side of a rapid cooling zone having gas jet cooling equipment and prevent the development of a stretcher strain or a wrinkle pattern of a bake-hardening steel sheet. The continuous annealing equipment is a continuous annealing equipment for a steel sheet, at least containing: a heating zone, a soaking zone, and a rapid cooling zone, the rapid cooling zone having gas jet cooling equipment and being provided with at least one pair of seal rolls at each of an inlet and an outlet thereof and bridle roll units each composed of two or more bridle rolls in front of and behind itself; the bridle roll unit behind the rapid cooling zone having two or more heating rolls each having an induction heater thereinside; and the heating roll having a winding angle of 100°or more per heating roll and 380° or more in total of all the heating rolls.