Title:
熱間圧延用遠心鋳造複合ロール及びその製造方法
Document Type and Number:
Japanese Patent JP7302232
Kind Code:
B2
Abstract:
To provide a centrifugal casting composite roll for hot rolling of which abrasion resistance is high in the case close to an initial diameter and heat crack resistance is enhanced in the case close to a waste diameter by cutting.SOLUTION: There is provided a centrifugal casting composite roll for hot rolling manufactured by depositing and integrating an inner layer consisting of an iron-based alloy to an outer layer consisting of an Fe group alloy containing, by mass basis, C:2.6 to 3.6%, Si:0.1 to 3%, Mn:0.3 to 2%, Ni:2.3 to 5.5%, Cr:0.5 to 3.2%, Mo:0.3 to 1.6%, V:0.2 to 3.4%, Nb:0.4 to 3%, and B:0.06% or less, and having 0.07≤V/Nb≤2.7, V equivalent (Veq=V+0.55 Nb) of 2.50%mass or more and the balance Fe with impurities, in which the V equivalent of the outer layer satisfies a condition of Veq1/Veq2=1.1 to 5, where Veq1 is V equivalent of an area from initial diameter to depth of 30 mm in a radial direction, and Veq2 is V equivalent in waste diameter.SELECTED DRAWING: Figure 2
Inventors:
Yasunori Nozaki
Nozomi Oda
Toshiyuki Hattori
Nozomi Oda
Toshiyuki Hattori
Application Number:
JP2019065343A
Publication Date:
July 04, 2023
Filing Date:
March 29, 2019
Export Citation:
Assignee:
Proterial Co., Ltd.
International Classes:
C22C37/00; B21B27/00; B22D13/02
Domestic Patent References:
| JP2008050681A | ||||
| JP2017185548A | ||||
| JP2004068142A | ||||
| JP2001279367A | ||||
| JP4350143A |
Foreign References:
| WO2013164469A1 | ||||
| WO2014178437A1 |
Attorney, Agent or Firm:
Takaishi Tachibana
Kenji Takaishi
Kenji Takaishi