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1. 发明专利

JP2002194591A TITANIUM SHEET AND MANUFACTURING METHOD THEREFOR 失效
公开(公告)号：JP2002194591A
公开(公告)日：2002-07-10
申请号：JP2000388431
申请日：2000-12-21
申请人： NIPPON STEEL CORP
发明人： TAKAHASHI KAZUHIRO , HAYASHI TERUHIKO , TAMENARI JUNICHI , ABE MITSUNORI , HIROTA MICHIHISA , TOKUNO KIYONORI , KIMURA KINICHI , SHINDO TAKATSUGU
IPC分类号： C25D11/26 , C22C14/00 , C23G1/10
摘要： PROBLEM TO BE SOLVED: To provide a titanium sheet, particularly a titanium sheet superior in formability such as press formability, and to provide a manufacturing method therefor. SOLUTION: This titanium sheet superior in the formability can maintain a lubricity with a die and a tool when being formed, without losing the formability of a raw material, and keeps scratch resistance against the die and the tool, by making a Vickers hardness at a load of 200 gf as 170 or less, and a thickness of an oxide film as 150 Å or more, on the surface of the titanium sheet. This method for obtaining the titanium sheet includes, removing adhered oil to the surface of the titanium sheet after cold rolling, annealing the sheet in a vacuum atmosphere or in an inert gas atmosphere, and then applying an anodic oxidation to provide an oxide film.

2. 发明专利

JPH08296071A METHOD FOR DULLING TITANIUM MATERIAL SURFACE 失效
公开(公告)号：JPH08296071A
公开(公告)日：1996-11-12
申请号：JP9720895
申请日：1995-04-21
申请人： NIPPON STEEL CORP
发明人： TAKAHASHI KAZUHIRO , TAKAYAMA ISAMU , HARADA NAOAKI , NISHIDA MURAAKI , KIMURA KINICHI , MATSUHASHI AKIRA , MASAKI MOTOMI
IPC分类号： C23G1/12 , C23G1/10
摘要： PURPOSE: To provide a method for dulling the surface of a titanium material by the picking using an aq. soln. of nitric-hydrofluoric acids contg. Fe, Cr and Ni ions. CONSTITUTION: A titanium material is pickled with an aq. soln. of nitric- hydrofluoric acids to dull its surface. In this case, a titanium material having

3. 发明专利

JPH08267149A METHOD FOR PREVENTING POCKET WAVE OF TITANIUM PLATE 失效
公开(公告)号：JPH08267149A
公开(公告)日：1996-10-15
申请号：JP7685595
申请日：1995-03-31
申请人： NIPPON STEEL CORP , TADASHI GIKEN KK
发明人： MASAKI MOTOMI , ADAKA MATSUO , HIGO TSUYOSHI , TAKAYAMA ISAMU , HARADA NAOAKI , NISHIDA MURAAKI , KIMURA KINICHI , TAMURA TADAO
IPC分类号： B21D5/08
摘要： PURPOSE: To obtain a flat formed member without generation of pocket waves by previously imparting the partial elongation meeting the material of a titanium plate to the plate ends parallel with the forming direction of the plate. CONSTITUTION: The pure titanium plate which is subjected to vacuum annealing or continuous annealing after cold rolling and has mechanical properties of yield strength of 150 to 400N/mm , γvalue of 0.5 to 3.0 and uniform elongation of 5 to 40% is subjected to bending of >=70 deg. by roll forming of >=4 to , γ is γ value, U is uniform elongation %, W is reduction ratio (bending angle per one roll).

4. 发明专利

JPH08229602A TITANIUM PLATE EXCELLENT IN ANTIDAZZLE CHARACTERISTICS AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH08229602A
公开(公告)日：1996-09-10
申请号：JP3739995
申请日：1995-02-24
申请人： NIPPON STEEL CORP
发明人： SHIMIZU YASUHIRO , ARAKI JUN , TAKAYAMA ISAMU , HARADA NAOAKI , KIMURA KINICHI , NISHIDA MURAAKI
IPC分类号： B21B3/00 , B21B1/22 , B21B27/00
摘要： PURPOSE: To provide a titanium plate excellent in antidazzle characteristics and method for manufacturing the same. CONSTITUTION: Surface roughness Ra is =0.1μm depth is 5-50% by area rate on the surface of the titanium plate. Rough rolling at the draft of 15-30% is executed by using the rolls whose surface roughness Ra is 0.20-1.20μm, successively intermediate rolling at the draft of 5-15% is executed by using the rolls whose surface roughness Ra is 0.10-0.20μm and successively finish rolling at the draft of 1-10% is executed by using the rolls whose surface roughness Ra is 0.01-0.10μm.

5. 发明专利

JPH07180012A PRODUCTION OF TITANIUM SHEET HAVING BEAUTIFUL SURFACE 失效
公开(公告)号：JPH07180012A
公开(公告)日：1995-07-18
申请号：JP32899893
申请日：1993-12-24
申请人： NIPPON STEEL CORP
发明人： YOSHIMURA HIROBUMI , HAYASHI MASAYUKI , KIMURA KINICHI , NISHIDA MURAAKI , NISHIJIMA TOMOHIRO , MASUOKA HIDENORI
IPC分类号： B24C1/00 , B21B3/00 , C22F1/00 , C22F1/18
摘要： PURPOSE:To produce a Ti sheet having a beautiful surface by subjecting the ingot, forged material or bloomed material of Ti to hot rolling and annealing at temps. lower than those in the conventional ways, thereafter removing surface scales by mechanical descaling and pickling and executing cold rolling. CONSTITUTION:The ingot of pure Ti for industrual use or the forged material or bloomed material obtd. by working the same ingot is heated to a relatively low temp. of 650 to 780 deg.C and is subjected to hot rolling. This hot rolled sheet is subjected to low temp. annealing at 420 to 650 deg.C to improve the flatness and descaling properties of the hot rolled sheet. After that, the surface is subjected to mechanical descaling treatment such as shot blasting under the conditions in which the shot blast coefficient S expressed by the formula 1 (where rho in the formula denotes the projection density of shots; Kg/m and V denotes the projection rate of shots; m/min) is regulated to 500 to 1200. Then, it is subjected to pickling treatment so as to regulate the amt. of a pickling solvent expressing the average solvent depth per side of the Ti sheet to >=30mum, is thereafter subjected to cold rolling, is worked to regulate its thickness into prescribed one and is subsequently subjected to finish annealing.

6. 发明专利

JPH06293947A PRODUCTION OF TITANIUM HOT ROLLED AND ANNEALED SHEET AND TITANIUM COLD ROLLED SHEET 失效
公开(公告)号：JPH06293947A
公开(公告)日：1994-10-21
申请号：JP7477393
申请日：1993-03-31
申请人： NIPPON STEEL CORP
发明人： YOSHIMURA HIROBUMI , HAYASHI MASAYUKI , KIMURA KINICHI , KUSANO AKIHIKO , NISHIJIMA TOMOHIRO
IPC分类号： C22F1/18 , C22F1/00
摘要： PURPOSE:To provide the method for producing a cold rolled steel sheet in which the camber of C formed in a hot rolled sheet (strip) or the like is prevented to form its surface into a flattened one and anisotropy in the subsequent cold rolling is remarkably reduced. CONSTITUTION:A hot rolled sheet obtd. by subjecting industrially pure titanium (the first to third class) to ordinary hot rolling or heating to 650 to 780 C and hot rolling is subjected to heat treatment in the temp. range of 450 to 650 deg.C and is successively subjected to mechanical descaling treatment and pickling treatment to produce the hot rolled and annealed sheet having an excellent surface. In addition, it is subjected to cold rolling and final annealing to make the product.

7. 发明专利

JPH06292906A MANUFACTURE OF BAR AND WIRE ROD OF TITANIUM AND TITANIUM ALLOY 失效
公开(公告)号：JPH06292906A
公开(公告)日：1994-10-21
申请号：JP8362293
申请日：1993-04-09
申请人： NIPPON STEEL CORP
发明人： KIMURA KINICHI , YOSHIMURA HIROBUMI , TAKAHASHI TSUNETOSHI , YAMAMOTO SATOSHI , NAKAMURA YOSHITAKA , SADANO YUTAKA , TENTOU KIYOUTAROU
IPC分类号： B21B1/16 , B21B3/00 , C22F1/00 , C22F1/18
摘要： PURPOSE:To produce a bar and wire rod excellent in surface properties at a high efficiency by heating a titanium rolling stock, rolling it with a skew rolling mill and rolling it with a caliber rolling mill after reheating. CONSTITUTION:The rolling stock of titanium and titanium alloy is heated in a heating stage, rolled at a specific reduction of area in accordance with a heating temp. with the skew rolling mill, reheated or kept at a certain temp. with a heating device and rolled with the caliber rolling mill. In such a manner, the bar and wire rod of titanium and titanium alloy are manufactured. The reduction of area in the skew rolling is determined in the range that satisfies a formula I. In the formula I, the reduction of area (%) is expressed by R and the heating temp. ( deg.C) is expressed by T. In this way, even about a cast ingot which has not been utilized in the past, the direct rolling of the same can be carried out.

8. 发明专利

JPH05345942A 失效
公开(公告)号：JPH05345942A
公开(公告)日：1993-12-27
申请号：JP8914292
申请日：1992-04-09
申请人： NIPPON STEEL CORP
发明人： IKEMATSU YOICHI , HANAMURA TOSHIHIRO , MORIKAWA HIROBUMI , KIMURA KINICHI , YOSHIMURA HIROBUMI , TAKAMURA JINICHI
IPC分类号： C22C14/00 , C23C14/06 , C23C14/16 , C23C14/48
摘要： PURPOSE:To improve the oxidation resistance of a Ti-based alloy and to enable the use of the alloy at a high temp. by implanting ions of at least one of groups Vb and VIb elements into the alloy. CONSTITUTION:Ions of at least one among P, As and Sb as group Vb elements and Se and Te as group VIb elements are implanted into a Ti-based alloy contg. 7-24wt.% Al to modify the surface of the alloy based on or contg. Ti3Al as an intermetallic compd. By this ion implantation, a Ti-based alloy having high oxidation resistance can easily and safely be produced as compared with a method of directly adding the group Vb or VIb element in a melting stage.

9. 发明专利

JPH03277752A IMPROVEMENT OF STRUCTURE OF TITANIUM MATERIAL AND TITANIUM ALLOY MATERIAL 失效
公开(公告)号：JPH03277752A
公开(公告)日：1991-12-09
申请号：JP16224390
申请日：1990-06-20
申请人： NIPPON STEEL CORP
发明人： KIMURA KINICHI , HAYASHI MASAYUKI , ISHII MITSUO , YOSHIMURA HIROBUMI , TAKAMURA JINICHI
IPC分类号： C22F1/18 , C22F1/00
摘要： PURPOSE:To make the structure of a Ti-base metallic material fine and equiaxial by allowing a Ti-base metallic material to occlude specific amounts of hydrogen and subjecting this material to ageing treatment in a specific temp. region and then to annealing in vacuum. CONSTITUTION:A Ti material, an alpha Ti alloy material, and an alpha plus beta Ti alloy material are allowed to occlude 0.02-2wt.% hydrogen, and these materials are subjected to ageing treatment at 20-530 deg.C and then to annealing in vacuum, by which recrystallization is performed and also hydrogen is removed. When the amount of hydrogen occluded is less than 0.02%, the amount of hydride is small though hydride is precipitated at the time of ageing treatment, and as a result, a fine and equiaxial structure cannot be obtained by means of annealing. Further, when the amount of hydrogen occluded exceeds 2%, a large amount of hydride is precipitated at the time of ageing treatment, but the material becomes brittle in this stage and problems in the handling of the material, such as infeasibility of working, e.g. annealing, are brought about. Moreover, hydride is finely precipitated but the precipitation of hydride requires a very long time when ageing treatment temp. is below 10 deg.C, and, when it exceeds 530 deg.C, hydride is precipitated by large amounts but it is coarsened and reenters into solid solution, and as a result, the fine and equiaxial structure cannot be obtained by means of annealing.

10. 发明专利

JPH01168833A BORON-CONTAINING TITANIUM ALLOY 失效
公开(公告)号：JPH01168833A
公开(公告)日：1989-07-04
申请号：JP32679487
申请日：1987-12-25
申请人： NIPPON STEEL CORP
发明人： YOSHIMURA HIROBUMI , ISHII MITSUO , KIMURA KINICHI , WATABE YOSHIHIRO
IPC分类号： C22C14/00
摘要： PURPOSE:To manufacture a titanium alloy having a high effect on the shieldering of thermal neutrons and having excellent corrosion resistance by incorporating specific amounts of boron to titanium. CONSTITUTION:The title alloy contg. 0.1-10% boron and the balance consisting of titanium with inevitable impurities is prepd. by a melting method, powder metallurgy, etc. By this method, the titanium alloy useful as the material for a structure for the storage and transport of nuclear power waste or for the shielding of neutrons can be obtd.

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