Coil skid and steel sheet manufacturing method
AssigneeNippon Steel Corporation
InventorsTakayuki Otsuka, Tooru Akashi, Kazuki Shiokawa, Yuki Takeuchi, Hiroki Matsubara
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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.
Claims5
A coil skid on which a hot-rolled coil obtained by coiling a hot-rolled steel sheet is placed, the coil skid comprising:
- at least two or more layers of a metal plate and at least two or more layers of a heat insulating material each stacked alternately, wherein
- the thickness of each of the heat insulating materials is 70 mm or less, and
- the total thickness of the heat insulating material is 100 mm or more, wherein
- the metal plate is in contact with the hot-rolled coil.
Dependencies are inferred from the claim text.