Title:
STEEL MATERIAL FOR THERMAL CUTTING USING OXYGEN
Document Type and Number:
WIPO Patent Application WO/2012/014851
Kind Code:
A1
Abstract:
A steel material for thermal cutting using oxygen, which has a chemical composition that contains, in mass%, 0.06 to 0.20% of Si, 0.010 to 0.033% of P, and more than 0.02 to 0.08% of Al and that satisfies P/Si ≥ 0.12 and Al/Si ≤ 0.60, and which has, on the surface, a scale wherein an Si-rich region having an Si concentration of 0.4% or more is present in the form of a layer and an Al-rich region having an Al/Si ratio of 0.3 or more is present in the form of a layer on the surface-layer side of the Si-rich region.
Inventors:
KAMIMURA TAKAYUKI (JP)
FUJIWARA KAZUKI (JP)
SHINTAKU YOSHIAKI (JP)
OKADA HIKARU (JP)
KUBO SATOSHI (JP)
MAEDA TAKAO (JP)
FUJIWARA KAZUKI (JP)
SHINTAKU YOSHIAKI (JP)
OKADA HIKARU (JP)
KUBO SATOSHI (JP)
MAEDA TAKAO (JP)
Application Number:
PCT/JP2011/066874
Publication Date:
February 02, 2012
Filing Date:
July 25, 2011
Export Citation:
Assignee:
SUMITOMO METAL IND (JP)
KAMIMURA TAKAYUKI (JP)
FUJIWARA KAZUKI (JP)
SHINTAKU YOSHIAKI (JP)
OKADA HIKARU (JP)
KUBO SATOSHI (JP)
MAEDA TAKAO (JP)
KAMIMURA TAKAYUKI (JP)
FUJIWARA KAZUKI (JP)
SHINTAKU YOSHIAKI (JP)
OKADA HIKARU (JP)
KUBO SATOSHI (JP)
MAEDA TAKAO (JP)
International Classes:
C22C38/00; C22C38/06; C22C38/58; C21D8/02
Foreign References:
| JP2002332541A | 2002-11-22 | |||
| JP2008095155A | 2008-04-24 | |||
| JP2008208452A | 2008-09-11 | |||
| JP2006231363A | 2006-09-07 |
Attorney, Agent or Firm:
SUGIOKA, Kanji et al. (JP)
Sugioka Miki 2 (JP)
Sugioka Miki 2 (JP)
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Claims: