Title:
The compound roll for product hot-rolling made from centrifugal casting
Document Type and Number:
Japanese Patent JP5950047
Kind Code:
B2
Abstract:
A centrifugally cast, hot-rolling composite roll comprising an outer layer formed by a centrifugal casting method, and an inner layer made of ductile cast iron and integrally fused to the outer layer; the outer layer having a chemical composition comprising by mass 1.6-3% of C, 0.3-2.5% of Si, 0.3-2.5% of Mn, 0.1-5% ofNi, 2.8-7% of Cr, 1.8-6% of Mo, 3.3-6.5% of V, and 0.02-0.12% of B (or 0.01-0.12% of B, and 0.05-0.2% of S), the balance being Fe and inevitable impurities, and meeting the relation expressed by Cr/(Mo + 0.5W) ‰¥ -2/3[C - 0.2(V + 1.19Nb)] + 11/6, wherein W = 0, and Nb = 0, when W and Nb are not contained, and containing by area 1-15% of MC carbide, 0.5-20% of carboboride, and 1-25% of Cr-based carbide.
Inventors:
Toshiyuki Hattori
Nozomi Oda
Yasunori Nozaki
Nozomi Oda
Yasunori Nozaki
Application Number:
JP2015533343A
Publication Date:
July 13, 2016
Filing Date:
September 17, 2014
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
B21B27/00; B22D13/02; B22D19/16; C22C37/00
Domestic Patent References:
| JPH0820837A | 1996-01-23 | |||
| JPH108212A | 1998-01-13 | |||
| JPS6126758A | 1986-02-06 | |||
| JP2007245217A | 2007-09-27 | |||
| JP2006281301A | 2006-10-19 | |||
| JPH11302768A | 1999-11-02 | |||
| JP2000051912A | 2000-02-22 | |||
| JPH0820837A | 1996-01-23 | |||
| JPH108212A | 1998-01-13 | |||
| JPS6126758A | 1986-02-06 | |||
| JP2007245217A | 2007-09-27 | |||
| JP2006281301A | 2006-10-19 | |||
| JPH11302768A | 1999-11-02 | |||
| JP2000051912A | 2000-02-22 |
Attorney, Agent or Firm:
Takaishi Tachibana
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