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Title:
ROLL OUTER LAYER MATERIAL FOR ROLLING, AND COMPOSITE ROLL FOR ROLLING
Document Type and Number:
WIPO Patent Application WO/2018/042929
Kind Code:
A1
Abstract:
Provided are a roll outer layer material and a composite roll for rolling that have remarkably improved abrasion resistance. A roll outer layer material that has a W-Co-based alloy composition: that is a graded composition in which W content decreases in the radial direction from an outer circumferential side toward an inner circumferential side; and that, at an outer layer material surface that is located at a maximum diameter during rolling, contains, by mass%, 25%-70% of W, 5%-45% of Co, 0.6%-3.5% of C, 0.05%-3% of Si, 0.05%-3% of Mn, and 1%-15% of Mo, the remainder being unavoidable impurities.

Inventors:
ICHINO Kenji (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
SUZUKI Takeshi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
IWATA Naomichi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
MOCHIDA Tetsuo (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
ISHIDA Kiyohito (2-1-1 Katahira Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
OHNUMA Ikuo (2-1-1 Katahira Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
Application Number:
JP2017/026246
Publication Date:
March 08, 2018
Filing Date:
July 20, 2017
Export Citation:
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Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
International Classes:
B21B27/00; B22D13/02; C21D9/38; C22C27/04; C22C30/00; C22F1/00; C22F1/18
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JFE Techno-Research Corporation 7-1, Otemachi 2-chome, Chiyoda-k, Tokyo 04, 〒1000004, JP)
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