Title:
遠心鋳造製複合ロール及びその製造方法
Document Type and Number:
Japanese Patent JP5477522
Kind Code:
B1
Abstract:
A centrifugally cast 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 being made of an Fe-based alloy having a chemical composition comprising by mass at least 0.8-3.0% of Cr, 1.5-6.0% of Mo, and 1.8-5.5% of V, and a metal structure in which the area ratio of graphite is 0.3-10%; the inner layer comprising a roll body portion fused to the outer layer, and shaft portions integrally extending from both ends of the roll body portion; and the total amount of Cr, Mo and V being 0.15-2.0% by mass in end portions of both shaft portions, and the difference in the total amount of Cr, Mo and V between one shaft portion and the other shaft portion being 0.2% or more by mass.
Inventors:
Nozomi Oda
Segawa Takayuki
Yasunori Nozaki
Toshiyuki Hattori
Segawa Takayuki
Yasunori Nozaki
Toshiyuki Hattori
Application Number:
JP2013552054A
Publication Date:
April 23, 2014
Filing Date:
March 28, 2013
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
B21B27/00; B22D19/16; B22D13/02; C22C37/00
Domestic Patent References:
| JP2003073767A | 2003-03-12 | |||
| JP2005177809A | 2005-07-07 | |||
| JPS59225806A | 1984-12-18 | |||
| JPS58157202U | 1983-10-20 | |||
| JP2012213780A | 2012-11-08 |
Attorney, Agent or Firm:
Takaishi Tachibana