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1. 发明专利

DE69909940D1 未知
公开(公告)号：DE69909940D1
公开(公告)日：2003-09-04
申请号：DE69909940
申请日：1999-11-09
申请人： DAIDO STEEL CO LTD
发明人： EGAWA TOKUO , TAKADA KATUNORI , TAKAYAMA AKITAKE , SHIMIZU NARITO , ISHIKAWA TAKESHI
IPC分类号： F16J10/00 , C21D1/10 , C21D7/06 , C21D8/00 , C21D9/00 , C22C38/00 , C22C38/18 , C22C38/22

2. 发明专利

DE69909940T2 未知
公开(公告)号：DE69909940T2
公开(公告)日：2004-06-03
申请号：DE69909940
申请日：1999-11-09
申请人： DAIDO STEEL CO LTD
发明人： EGAWA TOKUO , TAKADA KATUNORI , TAKAYAMA AKITAKE , SHIMIZU NARITO , ISHIKAWA TAKESHI
IPC分类号： F16J10/00 , C21D1/10 , C21D7/06 , C21D8/00 , C21D9/00 , C22C38/00 , C22C38/18 , C22C38/22

3. 发明专利

JPH11247737A INJECTOR 失效
公开(公告)号：JPH11247737A
公开(公告)日：1999-09-14
申请号：JP7147198
申请日：1998-03-04
申请人： DAIDO STEEL CO LTD
发明人： TOMIOKA TATSUYA , YAGI TOMIICHI , TAKAYAMA AKITAKE
IPC分类号： F02M51/06
摘要： PROBLEM TO BE SOLVED: To improve magnetic responsivity as well as the magnetic attraction of a magnetic circuit for driving and controlling a needle. SOLUTION: A guide 16, in which ferromagnetic sections 16b and 16b are formed on both sides of the axial direction holding a non magnetic section 16a, is arranged in a housing 14. A coil 18 is wound around outside the non magnetic section 16a and ferromagnetic sections 16b and 16b. A connector 20 is fixedly positioned in the guide 16. An attraction section 20b made of Fe-Co-V alloy with high saturation magnetism is connected to the connector 20 at its front end. A needle 22 is slidably arranged in the guide 16 and is held at a position to close a nozzle 12 always energized by a compression spring 24. An attracted section 26b made of Fe-Co alloy with high magnetic permeability and high specific resistance is connected to the core 26 connected to the needle 22 at its rear end.

4. 发明专利

JP2007063635A Stainless steel strip 有权
标题翻译：不锈钢条
公开(公告)号：JP2007063635A
公开(公告)日：2007-03-15
申请号：JP2005252940
申请日：2005-09-01
申请人： Daido Steel Co Ltd , Sakuma Tokushuko Kk , 佐久間特殊鋼株式会社 , 大同特殊鋼株式会社
发明人： YAMAGUCHI SHINJI , IWAZAWA MANABU , TAKAYAMA AKITAKE
IPC分类号： C22C38/00 , C21D9/46 , C22C38/42 , C22C38/46
摘要： PROBLEM TO BE SOLVED: To provide a stainless steel strip superior in hot workability in a manufacturing process.
SOLUTION: The stainless steel strip comprises, by wt.%, 0.3% to 1.2% C, 12.5% to 18.0% Cr, 0.05% to 0.25% Si, 0.001% to 0.02% N, 1.0% or less Mn, 1.0% or less Cu, 0.03% or less P, 0.010% or less S, 1.0% or less Ni and the balance substantially Fe with unavoidable impurities.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供在制造过程中热加工性优异的不锈钢带。解决方案：不锈钢带以重量％计含有0.3％至1.2％的C，12.5％至18.0％的Cr，0.05％至0.25％的Si，0.001％至0.02％的N，1.0％或更低的Mn， 1.0％以下的Cu，0.03％以下的P，0.010％以下的S，1.0％以下的Ni，余量基本为Fe，不可避免的杂质。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2000145964A MARTENSITIC STAINLESS STEEL PART AND MANUFACTURE THEREFOR 失效
公开(公告)号：JP2000145964A
公开(公告)日：2000-05-26
申请号：JP31797398
申请日：1998-11-09
申请人： DAIDO STEEL CO LTD
发明人： EGAWA TOKUO , TAKADA KATSUNORI , TAKAYAMA AKITAKE , SHIMIZU SHIGETO , ISHIKAWA TAKESHI
IPC分类号： F16J10/00 , C21D1/10 , C21D7/06 , C21D8/00 , C21D9/00 , C22C38/00 , C22C38/18 , C22C38/22
摘要： PROBLEM TO BE SOLVED: To conduct high frequency hardening only on a working surface to manufacture a steel part kept to a high hardness by using specified steel which has corrosion resistance, is excellent in cutting machinability and cold operability, and can be kept to a specified value or more of hardness in high-frequency hardening, and be hardened to a required depth. SOLUTION: A hollow part or an shaft-like part of martensite base stainless steel is formed out of stainless steel which contains 0.3-0.6% C, 1.0 or less Si, 1.0% or less Mn, 0.04% or less P, 0.03% or less S, and 4.0-11.0% Cr, further contains one or two kinds selected from 1.0% or less Mo and 0.02-0.2% N at need, and the residue having alloy composition substantially formed of Fe, and the use surface of which is subjected to high frequency hardening. One or two kinds of surface finishings selected from fine particle high speed shot injection treatment and nitriding treatment are conducted on the surface of the martensite base stainless steel part subjected to high frequency hardening.

6. 发明专利

JPH04136355A DISSIMILAR JOINT MEMBER FOR USE IN STRUCTURAL MEMBER OF STEEL STRUCTURAL BUILDING 失效
公开(公告)号：JPH04136355A
公开(公告)日：1992-05-11
申请号：JP25831590
申请日：1990-09-26
申请人： KENSETSUSHIYOU KENCHIKU KENKIY , SATO KOGYO , DAIDO STEEL CO LTD , NISSHIN STEEL CO LTD
发明人： YAMAUCHI YASUYUKI , IMANAKA NOBUO , TAKAYAMA AKITAKE , MURANAKA YUTAKA
IPC分类号： E04B1/24 , E04C3/04 , E04C3/29 , E04C3/32
摘要： PURPOSE:To restrain deformation of a structure by joining to one part of each structural member formed mainly by common steel a dissimilar metallic material which is different in mechanical strength characteristic from common steel, such as stainless, aluminium and the like. CONSTITUTION:The structural members of a steel structure are formed mainly by common steel, and stainless steel, very low yield. point steel or aluminium alloy and the like is joined to both end portions 21,22 of the capital 11 or base 12 of each column member 10. The tensile strength of the stainless steel is about 2.3 times that of the common steel and expansion of the stainless steel is about twice that of the common steel and expansion of the very low yield point steel is about twice that of the common steel and the modulus of elasticity of the aluminium alloy is about one-third that of the common steel. Thereby the longevity of a building can be remarkably enhanced.

7. 发明专利

JPH11251138A SLEEVE MATERIAL FOR ELECTROMAGNETIC COIL AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH11251138A
公开(公告)日：1999-09-17
申请号：JP5206298
申请日：1998-03-04
申请人： DAIDO STEEL CO LTD
发明人： TOMIOKA TATSUYA , TAKAYAMA AKITAKE , KOYAMA HARUO
IPC分类号： H01F1/00 , F16K31/06 , H01F1/03 , H01F7/16
摘要： PROBLEM TO BE SOLVED: To provide a composite magnetic material which is low cost and high performance together with its manufacturing method, wherein a ferro-magnetic part and a non-magnetic part are continuously formed as one body. SOLUTION: An assembly wherein a ferrite group stainless steel and an austenite group stainless steel are alternately laminated, which is inserted in a sheath, is worked by hot-extrusion to form a rod. It is worked by cold-drawing in the direction reversal to that for hot-extrusion and then annealed to obtain a sleeve material for an electromagnetic coil, wherein a ferrite group stainless steel part (ferro-magnetic metal 3) and an austenite group stainless steel part (non-magnetic metal 4) are alternately laminated for an integral joint.

8. 发明专利

JPH11186018A COMPOSITE MAGNETIC MEMBER AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH11186018A
公开(公告)日：1999-07-09
申请号：JP34772497
申请日：1997-12-17
申请人： DAIDO STEEL CO LTD
发明人： TOMIOKA TATSUYA , TAKAYAMA AKITAKE , KOYAMA HARUO
IPC分类号： C22C33/02 , C21D6/00 , C22C19/03 , C22C38/00 , H01F1/14
摘要： PROBLEM TO BE SOLVED: To provide a high-performance composite magnetic member which has inexpensive, continuous ferromagnetic and non-magnetic parts formed integrally, as well as to provide a method for manufacturing the member. SOLUTION: Fe-Cr alloy powder of ferromagnetic alpha phase and alloy powder of two or more types of chemical compositions such as Fe-Ni alloy powder and Ni powder are mixed uniformly and integrally molded by hot extrusion, to thereby form a ferromagnetic molding of a metallic structure, in which the plurality of alloy powder phases are dispersed uniformly. Next, a part of the molding is heated to make solid solution and to have a uniformly diffused structure and a local non-magnetic gamma phase, thus having a ferromagnetic molding and a non-magnetic part formed integrally.

9. 发明专利

JPH1099930A HIGH SPEED HOT FORGING METHOD FOR HIGH SPEED STEEL 失效
公开(公告)号：JPH1099930A
公开(公告)日：1998-04-21
申请号：JP25520196
申请日：1996-09-27
申请人： DAIDO STEEL CO LTD
发明人： TAKAYAMA AKITAKE , OZAKI KOZO , FUJITA SATOSHI , FUJIMURA KAZUHIKO
IPC分类号： B21J1/06 , B21J5/00 , B21J9/20 , B21K21/06 , C22C38/00 , C22C38/24 , C22C38/30
摘要： PROBLEM TO BE SOLVED: To provide a high speed hot forging method improving productivity and thermal efficiency without generating cracks by heating a stock only once and continuously executing the forging of two-stage strikes or above without re-heating in a hot forging method for a high speed steel. SOLUTION: In a high speed hot forging method wherein a stock consisting of high speed steel is hot forged at the forging speed of 0.5 times/sec or above with two-stage strikes or above, the whole processes are executed with an initial one time heating. Also, the temperature range for executing hot forging is specified to from 950 deg.C to the fusion starting temperature of carbide minus 50 deg.C (Ts-50 deg.C). Further, the high speed steel for hot forging is composed of, by wt., 0.45-1.70% C, 2-20% Cr, 2-30% 2Mo+W, 0.2-6.0% V and the balance Fe or the like. The same containing, by wt.,

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