Title:
ROLL FOR ROLLING SEAMLESS PIPES
Document Type and Number:
WIPO Patent Application WO/2006/126678
Kind Code:
A1
Abstract:
A roll for rolling seamless pipes which has a roll neck and a roll body, wherein the surface layer of the roll body comprises by mass: C: 1.5 to 2.5%, Si: 1.3 to 3.5%, Mn: 0.1 to 2.0%, Ni: 0.5 to 8.0%, Cr: 0.1 to 2.0%, Mo: 0.2 to 5.0%, V: 0.1 to 5.0%, W: 0.1 to 5.0%, Nb: 0.1 to 5.0%, and Co: 0.05 to 2.0% with the balance being Fe and impurities, and further contains 0.5 to 5.0% of graphite by area ratio. The roll has high abrasion resistance and excellent biting properties.
Inventors:
GOTO KUNIO (JP)
Application Number:
PCT/JP2006/310563
Publication Date:
November 30, 2006
Filing Date:
May 26, 2006
Export Citation:
Assignee:
SUMITOMO METAL IND (JP)
GOTO KUNIO (JP)
GOTO KUNIO (JP)
International Classes:
B21B27/02; B21B19/04; C22C37/00; C22C38/00; C22C38/58
Foreign References:
| JP2001179311A | 2001-07-03 | |||
| JP2002016334A | 2002-01-18 | |||
| JP2004250729A | 2004-09-09 | |||
| JPH1081937A | 1998-03-31 |
Other References:
See also references of EP 1894641A4
Attorney, Agent or Firm:
Ueba, Hidetoshi (4th Fl. Kadono Bldg., 2-1, Tenma 2-chome, Kita-k, Osaka-shi Osaka 43, JP)
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