Title:
ROLLING ROLL OUTER LAYER MATERIAL WITH HIGH ABRASION RESISTANCE AND ROLLING COMPOUND ROLL
Document Type and Number:
Japanese Patent JP2018039047
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a roll outer layer material having high abrasion resistance and a rolling compound roll including the same.SOLUTION: A roll outer layer material has an inclined composition with a W content reducing in a radial direction from an outer peripheral side of a roll toward an inner peripheral side thereof. An outer layer material surface at a position corresponding to a maximum diameter when used being rolled has a composition containing W:25-70%, Co:5-45%, C:0.6-3.5%, Si:0.05-3%, Mn:0.05-3% and Mo:1-15% in mass%, and an inevitable impurity as a remaining part. A carbide area ratio of the outer layer material surface is 45-90%. A rolling compound roll also preferably contains one or more selected from Fe:5-40%, Cr:0.1-10%, V:0.1-6% and Nb:0.1-3% in mass%, and more preferably satisfies expression [1]: 0.6≤%Fe/%Co≤1.5 [1], where %Fe and %Co are respectively the content (mass%) of Fe and Co.SELECTED DRAWING: None
Inventors:
ICHINO KENJI
SUZUKI TAKESHI
IWATA NAOMICHI
MOCHIDA TETSUO
ISHIDA KIYOHITO
ONUMA IKUO
SUZUKI TAKESHI
IWATA NAOMICHI
MOCHIDA TETSUO
ISHIDA KIYOHITO
ONUMA IKUO
Application Number:
JP2017141426A
Publication Date:
March 15, 2018
Filing Date:
July 21, 2017
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
B21B27/00; C22C27/04
Domestic Patent References:
| JPS60177945A | 1985-09-11 | |||
| JPS6160858A | 1986-03-28 | |||
| JPS61182862A | 1986-08-15 | |||
| JP2016093839A | 2016-05-26 | |||
| JPS5246320A | 1977-04-13 | |||
| JP2007185681A | 2007-07-26 |
Foreign References:
| WO2018043534A1 | 2018-03-08 | |||
| WO2007077637A1 | 2007-07-12 |
Attorney, Agent or Firm:
Kenichiro Ochiai