Title:
CENTRIFUGALLY CAST COMPOSITE ROLL FOR HOT ROLLING USE
Document Type and Number:
WIPO Patent Application WO/2021/075561
Kind Code:
A1
Abstract:
A centrifugally cast composite roll for hot rolling use, comprising an outer layer and an inner layer which are integrated with each other by fusion bonding, wherein: the outer layer comprises a Fe-based alloy having a chemical composition containing, in terms of mass-based contents, 2.6 to 3.6% of C, 0.1 to 3% of Si, 0.3 to 2% of Mn, 2.3 to 5.5% of Ni, 0.5 to 3.2% of Cr, 0.3 to 1.6% of Mo, 1.8 to 3.4% of V and 0.7 to 2.4% of Nb, wherein the requirement represented by the formula: 1.4 ≤ V/Nb ≤2.7 is satisfied, the V equivalent (Veq = V+0.55Nb) is 2.60 to 4% by mass, and the remainder is made up by Fe and impurities; and the inner layer comprises an iron-based alloy.
Inventors:
NOZAKI YASUNORI (JP)
ODA NOZOMU (JP)
HATTORI TOSHIYUKI (JP)
ODA NOZOMU (JP)
HATTORI TOSHIYUKI (JP)
Application Number:
PCT/JP2020/039148
Publication Date:
April 22, 2021
Filing Date:
October 16, 2020
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
B21B27/00; B22D13/02; B22D19/16; C22C33/08; C22C37/00
Foreign References:
| JP2017185548A | 2017-10-12 | |||
| JPH09209073A | 1997-08-12 | |||
| JP2016093839A | 2016-05-26 | |||
| JP2019183276A | 2019-10-24 | |||
| JP2004068142A | 2004-03-04 | |||
| JP2001279367A | 2001-10-10 | |||
| JP2008050681A | 2008-03-06 | |||
| JP2017185548A | 2017-10-12 | |||
| JP2003073767A | 2003-03-12 | |||
| JP2015193025A | 2015-11-05 | |||
| JP2015080813A | 2015-04-27 |
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
Download PDF: