Title:
圧延用複合ロール及びその製造方法
Document Type and Number:
Japanese Patent JP6973416
Kind Code:
B2
Abstract:
A composite roll for rolling having a structure comprising centrifugally cast outer and intermediate layers of an Fe-based alloy integrally fused to an inner layer of ductile cast iron; the outer layer having a composition comprising by mass 1-3% of C, 0.3-3% of Si, 0.1-3% of Mn, 0.5-5% of Ni, 1-7% of Cr, 2.2-8% of Mo, 4-7% of V, 0.005-0.15% of N, and 0.05-0.2% of B, the balance being Fe and inevitable impurities; the intermediate layer containing 0.025-0.15% by mass of B; the B content in the intermediate layer being 40-80% of that in the outer layer; and the total amount of Cr, Mo, V, Nb and W in the intermediate layer being 40-90% of that in the outer layer.
Inventors:
Yasunori Nozaki
Nozomi Oda
Toshiyuki Hattori
Nozomi Oda
Toshiyuki Hattori
Application Number:
JP2018567489A
Publication Date:
November 24, 2021
Filing Date:
February 08, 2018
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
B21B27/00; B22D13/02
Domestic Patent References:
| JP2002088445A | ||||
| JP2015205342A |
Foreign References:
| WO2015045985A1 | ||||
| WO2015045984A1 |
Attorney, Agent or Firm:
Takaishi Tachibana
Kenji Takaishi
Kenji Takaishi