Title:
遠心鋳造製圧延用複合ロール及びその製造方法
Document Type and Number:
Japanese Patent JP7048820
Kind Code:
B2
Abstract:
There is provided a centrifugally cast composite roll for rolling having excellent wear resistance and surface deterioration resistance at levels of a high-speed steel cast iron roll and having rolling incident resistance at a level of a high alloy grain cast iron roll. Its outer layer includes chemical components by mass ratio: C: 1.5 to 3.5%; Si: 0.3 to 3.0%; Mn: 0.1 to 3.0%; Ni: 1.0 to 6.0%; Cr: 1.5 to 6.0%; Mo: 0.1 to 2.5%; V: 2.0 to 6.0%; Nb: 0.1 to 3.0%; B: 0.001 to 0.2%; N: 0.005 to 0.070%; and the balance being Fe and inevitable impurities, wherein: a chemical composition of the outer layer satisfies Formula (1) and has 5 to 30% of M3C carbide by area ratio; an outer layer Shore hardness (A) of a roll surface satisfies Formula (2); and a residual stress (B) of the roll surface satisfies Formula (3),2×Ni+0.5×Cr+Mo>10.0 (1)Hs 75≤A≤Hs 85 (2)100 MPa≤B≤350 MPa (3).
More Like This:
| JPH03234378 | DULL FINISHING METHOD FOR ROLL FOR ROLLING |
Inventors:
Kazunori Uemiyata
Shinya Ishikawa
Yuji Konno
Shinya Ishikawa
Yuji Konno
Application Number:
JP2021511875A
Publication Date:
April 05, 2022
Filing Date:
March 25, 2020
Export Citation:
Assignee:
Nittetsu Rolls Co., Ltd.
International Classes:
B21B27/00; B22D13/02; B22D19/16; C21D5/00; C21D9/38; C22C37/00; C22C38/00; C22C38/58; C22C38/60
Domestic Patent References:
| JP2015205342A | ||||
| JP2005246391A | ||||
| JP2001150006A | ||||
| JP2000178675A |
Foreign References:
| WO2019045068A1 |
Attorney, Agent or Firm:
Koji Hagiwara
Kanemoto Tetsuo
Naoki Ogita
Takashi Saito
Takuya Mine
Kanemoto Tetsuo
Naoki Ogita
Takashi Saito
Takuya Mine
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