公开(公告)号：US20220347732A1

公开(公告)日：2022-11-03

申请号：US17763877

申请日：2020-10-02

Applicant: NIPPON STEEL CORPORATION

Inventor： Takayuki OTSUKA ,  Tooru AKASHI ,  Kazuki SHIOKAWA ,  Yuki TAKEUCHI ,  Hiroki MATSUBARA

IPC: B21C47/28 ,  B21C47/24 ,  B21B45/02

Abstract: A coil skid on which a hot-rolled coil 1 obtained by coiling a hot-rolled steel sheet is placed includes: at least two or more layers of a metal plate 11 and at least two or more layers of a heat insulating material 12 each stacked alternately, in which the metal plate 11 is in contact with the hot-rolled coil 1. The uneven cooling of an outer peripheral portion of the hot-rolled coil caused by the coil skid is prevented while ensuring the strength of the coil skid, to thereby inhibit the uneven hardness in the longitudinal direction of the hot-rolled coil resulting from this uneven cooling.