Title:
矩形断面鋼片の圧延方法、連続鋳造圧延設備及び圧延設備
Document Type and Number:
Japanese Patent JP7356016
Kind Code:
B2
Abstract:
To suppress internal defect caused by porosity and segregation of a thickness center part of a steel piece and columnar crystal formation, breakage of a steel piece in a subsequent step caused by an inhomogeneous composition and occurrence of plate rupture during rolling, so as to suppress occurrence of product defect such as surface defect and poor mechanical characteristic defect.SOLUTION: In a rolling method for a steel piece with a rectangular cross section in which a steel piece with a nearly rectangular cross sectional shape is rolled, at least either of upper and lower surfaces of the steel piece contacting a rolling roll is intermittently cooled in a longitudinal direction of the steel piece prior to rolling, locally cooled parts scattering in the longitudinal direction of the steel piece are formed into the steel piece and the steel piece having the locally cooled parts formed is rolled.SELECTED DRAWING: Figure 1
Inventors:
Kenji Yamada
Hideo Mizukami
Hiroshi Harada
Yui Yamashita
Tohru Akashi
Hideo Mizukami
Hiroshi Harada
Yui Yamashita
Tohru Akashi
Application Number:
JP2019193461A
Publication Date:
October 04, 2023
Filing Date:
October 24, 2019
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21B1/02; B21B45/02; B22D11/00; B22D11/12; B22D11/124; C21D9/00
Domestic Patent References:
| JP57156811A | ||||
| JP2017224091A | ||||
| JP2007237240A | ||||
| JP6063636A | ||||
| JP2020075291A | ||||
| JP5014867B2 | ||||
| JP2014050874A | ||||
| JP2007118043A |
Attorney, Agent or Firm:
Patent Attorney Corporation Britus
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