Titanium material for hot rolling

Patent metadata

Field	Value
Publication number	US-2018200766-A1
Application number	US-201615746512-A
Country	US
Kind code	A1
Filing date	Jul 29, 2016
Priority date	Jul 29, 2015
Publication date	Jul 19, 2018
Grant date	—

Abstract

A titanium material for hot rolling 1 includes a titanium cast piece 3 , and titanium sheets 4 that are welded to faces corresponding to rolling surfaces 3 a of the titanium cast piece 3 . The titanium cast piece 3 and the titanium sheets 4 have the same kind of chemical composition. The titanium material for hot rolling 1 can maintain good surface properties after hot rolling even if a slabbing process or a finishing process is omitted.

First claim

1 . A titanium material for hot rolling, comprising:
a titanium cast piece, and a titanium sheet welded to a face corresponding to a rolling surface of the titanium cast piece; wherein: the titanium cast piece and the titanium sheet have a same kind of chemical composition as each other.

2 . The titanium material for hot rolling according to claim 1 , wherein:
a thickness of the titanium sheet is within a range of 1 mm to 20 mm.

3 . The titanium material for hot rolling according to claim 1 , wherein:
a grain size of the titanium sheet is less than 1 mm.

4 . The titanium material for hot rolling according to claim 1 , wherein:
the titanium cast piece is a titanium slab produced by electron beam remelting or plasma arc melting.

5 . The titanium material for hot rolling according to claim 1 , wherein:
the welding is electron beam welding, plasma arc welding or tungsten inert gas welding.

6 . The titanium material for hot rolling according to claim 1 , wherein:
the welding is performed in a vacuum.

7 . The titanium material for hot rolling according to claim 2 , wherein:
a grain size of the titanium sheet is less than 1 mm.

8 . The titanium material for hot rolling according to claim 2 , wherein:
the titanium cast piece is a titanium slab produced by electron beam remelting or plasma arc melting.

9 . The titanium material for hot rolling according to claim 3 , wherein:
the titanium cast piece is a titanium slab produced by electron beam remelting or plasma arc melting.

10 . The titanium material for hot rolling according to claim 7 , wherein:
the titanium cast piece is a titanium slab produced by electron beam remelting or plasma arc melting.

11 . The titanium material for hot rolling according to claim 2 , wherein:
the welding is electron beam welding, plasma arc welding or tungsten inert gas welding.

12 . The titanium material for hot rolling according to claim 3 , wherein:
the welding is electron beam welding, plasma arc welding or tungsten inert gas welding.

13 . The titanium material for hot rolling according to claim 4 , wherein:
the welding is electron beam welding, plasma arc welding or tungsten inert gas welding.

14 . The titanium material for hot rolling according to claim 7 , wherein:
the welding is electron beam welding, plasma arc welding or tungsten inert gas welding.

15 . The titanium material for hot rolling according to claim 8 , wherein:
the welding is electron beam welding, plasma arc welding or tungsten inert gas welding.

15 . The titanium material for hot rolling according to claim 9 , wherein:
the welding is electron beam welding, plasma arc welding or tungsten inert gas welding.

15 . The titanium material for hot rolling according to claim 10 , wherein:
the welding is electron beam welding, plasma arc welding or tungsten inert gas welding.

16 . The titanium material for hot rolling according to claim 2 , wherein:
the welding is performed in a vacuum.

17 . The titanium material for hot rolling according to claim 3 , wherein:
the welding is performed in a vacuum.

18 . The titanium material for hot rolling according to claim 4 , wherein:
the welding is performed in a vacuum.

19 . The titanium material for hot rolling according to claim 5 , wherein:
the welding is performed in a vacuum.

20 . The titanium material for hot rolling according to claim 7 , wherein:
the welding is performed in a vacuum.

21 . The titanium material for hot rolling according to claim 8 , wherein:
the welding is performed in a vacuum.

22 . The titanium material for hot rolling according to claim 9 , wherein:
the welding is performed in a vacuum.

23 . The titanium material for hot rolling according to claim 10 , wherein:
the welding is performed in a vacuum.

24 . The titanium material for hot rolling according to claim 11 , wherein:
the welding is performed in a vacuum.

25 . The titanium material for hot rolling according to claim 12 , wherein:
the welding is performed in a vacuum.

26 . The titanium material for hot rolling according to claim 13 , wherein:
the welding is performed in a vacuum.

27 . The titanium material for hot rolling according to claim 14 , wherein:
the welding is performed in a vacuum.

28 . The titanium material for hot rolling according to claim 15 , wherein:
the welding is performed in a vacuum.

Assignees

• Nippon Steel & Sumitomo Metal Corp

Inventors

• Kunieda Tomonori
• Tatsuzawa Yoshitsugu
• Fujii Hideki

Classifications

• B23K9/167

  and of a non-consumable electrode · CPC title

• B21B3/00

  Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences {; Rolling of aluminium, copper, zinc or other non-ferrous metals}(altering special metallurgical properties of alloys, other than structure consolidation or mechanical properties resulting therefrom C21D, C22F) · CPC title

• B23K15/00

  Electron-beam welding or cutting · CPC title

• B23K10/02

  Plasma welding · CPC title

• C22F1/183

  of titanium or alloys based thereon · CPC title