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Title:
TITANIUM MATERIAL FOR HOT ROLLING
Document Type and Number:
WIPO Patent Application WO/2017/018521
Kind Code:
A1
Abstract:
Provided is a titanium material 1 for hot rolling that has a base metal 1b made from an industrial pure titanium or a titanium alloy, and a surface layer 1a that is formed on at least one rolling surface of the base metal 1b and has a chemical composition that is different from the base metal 1b. The thickness of the surface layer 1a is 2.0-20.0 mm and accounts for at most 40%, per side, of the total thickness. When the contained amount of an element included in the surface layer 1a is measured at multiple points, the relationship |CAVE-C0|/CAVE×100 is at most 40%, where CAVE is the average amount of the increase in the contained amount from the base metal 1b, and C0 is the amount of the increase in the contained amount from the base metal 1b at each measurement location. The chemical composition of the surface layer includes at least one of Mo, V, and Nb as an element for which there is an increase in the contained amount from the base metal, and has an Mo equivalent amount of 8.0-20.0. The titanium material 1 for hot rolling has desired characteristics despite being inexpensive.

Inventors:
MORI KENICHI (JP)
FUJII HIDEKI (JP)
TAKAHASHI KAZUHIRO (JP)
KUNIEDA TOMONORI (JP)
TATSUZAWA YOSHITSUGU (JP)
Application Number:
PCT/JP2016/072343
Publication Date:
February 02, 2017
Filing Date:
July 29, 2016
Export Citation:
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Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B21B1/02; B21B3/00; B23K15/00; B23K20/04; C22C14/00; C22F1/00; C22F1/18
Domestic Patent References:
WO2014163087A12014-10-09
Foreign References:
JP2009041065A2009-02-26
JP2014233753A2014-12-15
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
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