Title:
TITANIUM SLAB FOR HOT-ROLLING, AND SMELTING METHOD AND ROLLING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2010/090353
Kind Code:
A1
Abstract:
Provided are titanium slabs for hot-rolling that can be fed into a general purpose hot-rolling machine that produces band-shaped coils without passing through any breakdown processes such, as blooming, or any reforming processes, and with which the generation of surface flaws in the hot-rolled band-shaped coil can be suppressed, and a smelting method and rolling method therefor. The slabs are characterized in having surface layer structures wherein, in the cast titanium slab, the angle θ formed by the direction of crystal growth from the surface layer toward the interior (direction of solidification) and the direction parallel to the slab casting direction (longitudinal direction) is 45-90° and θ at 10 mm or greater is 70-90°. The slabs are also characterized in that a crystal layer of 10 mm or more is formed wherein the slope of the direction of axis C of the titanium α phase viewed from the side of the slab that has been rolled is in the range of 35-90° from the normal direction of the rolled surface. Said titanium slabs can be smelted by casting at a drawing speed of 1.0 cm/min or greater using an electron beam smelting furnace.
Inventors:
TAKAHASHI, Kazuhiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
高橋一浩 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
KUNIEDA, Tomonori (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
國枝知徳 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
MORI, Kenichi (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
森健一 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
OTSUKA, Hiroaki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
大塚広明 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
FUJII, Hideki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
藤井秀樹 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
高橋一浩 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
KUNIEDA, Tomonori (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
國枝知徳 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
MORI, Kenichi (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
森健一 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
OTSUKA, Hiroaki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
大塚広明 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
FUJII, Hideki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
藤井秀樹 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
Application Number:
JP2010/052130
Publication Date:
August 12, 2010
Filing Date:
February 08, 2010
Export Citation:
Assignee:
NIPPON STEEL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)
新日本製鐵株式会社 (〒71 東京都千代田区丸の内二丁目６番１号 Tokyo, 〒1008071, JP)
TOHO TITANIUM CO., LTD. (3-5 Chigasaki 3-chome, Chigasaki-shi Kanagawa, 10, 〒2538510, JP)
東邦チタニウム株式会社 (〒10 神奈川県茅ヶ崎市茅ヶ崎三丁目３番５号 Kanagawa, 〒2538510, JP)
TAKAHASHI, Kazuhiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
高橋一浩 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
KUNIEDA, Tomonori (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
國枝知徳 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
MORI, Kenichi (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
森健一 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
OTSUKA, Hiroaki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
大塚広明 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
新日本製鐵株式会社 (〒71 東京都千代田区丸の内二丁目６番１号 Tokyo, 〒1008071, JP)
TOHO TITANIUM CO., LTD. (3-5 Chigasaki 3-chome, Chigasaki-shi Kanagawa, 10, 〒2538510, JP)
東邦チタニウム株式会社 (〒10 神奈川県茅ヶ崎市茅ヶ崎三丁目３番５号 Kanagawa, 〒2538510, JP)
TAKAHASHI, Kazuhiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
高橋一浩 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
KUNIEDA, Tomonori (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
國枝知徳 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
MORI, Kenichi (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
森健一 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
OTSUKA, Hiroaki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
大塚広明 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
International Classes:
B22D11/00; B22D11/041; B22D11/20; B22D21/06; B22D27/02; C22B9/22; C22B34/12
Attorney, Agent or Firm:
AOKI, Atsushi et al. (SEIWA PATENT & LAW, Toranomon 37 Mori Bldg. 5-1, Toranomon 3-chome, Minato-k, Tokyo 23, 〒1058423, JP)
Previous Patent: TITANIUM MATERIAL FOR HOT ROLLING AND MANUFACTURING METHOD THEREOF
Next Patent: THICKENER FOR THE PRODUCTION OF SOLID DETERGENTS
Next Patent: THICKENER FOR THE PRODUCTION OF SOLID DETERGENTS