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21. 发明专利

JPH11106883A HOT DIP GALVANIZED STEEL SHEET FOR PUNCHING 失效
公开(公告)号：JPH11106883A
公开(公告)日：1999-04-20
申请号：JP29043097
申请日：1997-10-06
申请人： KOBE STEEL LTD
发明人： SHIMIZU MASABUMI , IRIE KOJI , URAI MASAAKI , IWAI MASATOSHI , TOYODA TETSUO , ASAI TATSUYA , IWAI TAKAFUSA
IPC分类号： C23C2/02
摘要： PROBLEM TO BE SOLVED: To provide a hot dip galvanized steel sheet for punching having formability free from problems in practical use and capable of suppressing the generation of burrs as much as possible without hardening the steel sheet and its surface. SOLUTION: On a soft steel sheet 1 having tensile strength, an oxide scale layer 2 is formed, on the oxidzed scale layer 2, plating alloying layer 4 is formed via a reduced iron layer 3 or directly without interposing the reduced iron layer 3, and on the plating alloying layer 4, a hot-dip galvanizing layer 5 is formed. The thickness of the oxidized scale layer 2 is regulated to 1 to 10 μm, and the volume ratio of wustite in the oxidized scale is regulated to >=70%.

22. 发明专利

JPH0941040A PRODUCTION OF HIGH STRENGTH COLD ROLLED STEEL SHEET EXCELLENT IN STRENGTH-FLANGING PROPERTY 失效
公开(公告)号：JPH0941040A
公开(公告)日：1997-02-10
申请号：JP20008895
申请日：1995-08-04
申请人： KOBE STEEL LTD
发明人： ANAMI GORO , TOYODA TETSUO
IPC分类号： C21D8/04 , C21D9/46 , C22C38/00 , C22C38/18 , C22C38/38 , C22C38/50
摘要： PROBLEM TO BE SOLVED: To suppress the generation of an abnormal structure in a steel sheet and to impart excellent stretch-flanging properties thereto by specifying the compsn. of a low carbon steel and executing annealing after cold rolling at a two phase region temp. SOLUTION: The compsn. of a steel is composed of, by weight, 0.04 to =10sec and is subjected to water cooling so as to regulate the cooling time from the T deg.C to 450 deg.C to

23. 发明专利

JPH08333630A PRODUCTION OF HOT-ROLLED STEEL SHEET WITH REDUCED VARIATION OF QUALITY OF MATERIAL 失效
公开(公告)号：JPH08333630A
公开(公告)日：1996-12-17
申请号：JP16461695
申请日：1995-06-06
申请人： KOBE STEEL LTD
发明人： ANAMI GORO , TOYODA TETSUO
IPC分类号： B21B45/02 , B21B37/00 , B21B37/76 , C21D8/02 , C21D9/46
摘要： PURPOSE: To provide a producing method of a hot-rolled steel sheet, by which the calculated load is decreased and the variation of the quality of the material can sufficiently be restrained in an on-line control. CONSTITUTION: In the producing method of the hot-rolled steel sheet by acceleratedly rolling a steel slab heated up to an austenitic temp. range and successively cooling the steel sheet in a cooling zone 2 and thereafter, coiling the hot-rolled steel sheet. The cooling after rolling is controlled so that the residual austenitic strain at the Ac3 point of the steel sheet after rolling becomes uniform over the whole range from the front end part to the rear end part of the steel sheet. At this time, as a control method of cooling, a method for shifting the cool starting position P on the steel sheet 1 in the cooling zone 2 is preferably adopted.

24. 发明专利

JPH07305111A HIGH WORKABILITY STEEL SHEET AND METHOD FOR INCREASING ITS STRENGTH BY IRRADIATION OF HIGH DENSITY ENERGY 失效
公开(公告)号：JPH07305111A
公开(公告)日：1995-11-21
申请号：JP32537894
申请日：1994-12-27
申请人： KOBE STEEL LTD , TOYOTA MOTOR CORP
发明人： TOYODA TETSUO , MAKII KOICHI , SATO AKIHITO , NAKAMURA SHINICHIRO
IPC分类号： C23C8/26 , C21D1/09 , C22C38/00 , C22C38/04 , C22C38/26 , C22C38/58
摘要： PURPOSE:To increase the strength of the prescribed part of a high workability steel by irradiating the prescribed part of a high workability steel sheet with high density energy to form a molten zone penetrated by the same, furthermore adding nitrogen to the molten zone and rapidly solidifying the same to regulate the concn. of nitrogen to a specified one. CONSTITUTION:Prior to the working of a high workability steel sheet or after the working, the prescribed part is irradiated with high density energy (laser beam) in an atmosphere of gaseous nitrogen to form a molten zone penetrating the prescribed part, and furthermore, nitrogen is added to the molten zone. Next, this steel sheet is rapidly solidified to regulate the nitrogen concn. in the solidified phase to 300 to 800ppm. moreover, the compsn. of the steel preferably regulated to the one contg., by weight,

25. 发明专利

JPH0471992B2 失效
公开(公告)号：JPH0471992B2
公开(公告)日：1992-11-17
申请号：JP33096987
申请日：1987-12-26
申请人： KOBE STEEL LTD
发明人： TOYODA TETSUO , OKAMOTO SHOJI , KATSUAKA MASAAKI
IPC分类号： G03G15/02 , C22C19/00 , C22C19/07 , C22C45/00 , C22C45/04 , H01T19/00

26. 发明专利

JPH02152811A ROLLER 失效
公开(公告)号：JPH02152811A
公开(公告)日：1990-06-12
申请号：JP30663988
申请日：1988-12-02
申请人： KOBE STEEL LTD
发明人： TANAKA KATSUMASA , TOYODA TETSUO
IPC分类号： B65G39/07
摘要： PURPOSE:To improve the wear-resistance, resistance to oxidation, non-magnetism and shock resistance by winding an extra fine amorphous wire closely round the outer peripheral surface of a roller core body in a transporting or guiding roller to which load is not applied so much. CONSTITUTION:An extra fine amorphous wire 1 with the wire diameter of 10-200mum, for example, is closely arranged and wound round the outer peripheral surface of a roller core body 2. By this arrangement, the wear-resistance, resistance to oxidation, nonmagnetism and shock resistance can be improved in a simple construction.

27. 发明专利

JPH01203060A CORONA DISCHARGE WIRE FOR AIR CLEANER WITH ONLY LITTLE OZONE GENERATION 失效
公开(公告)号：JPH01203060A
公开(公告)日：1989-08-15
申请号：JP2645788
申请日：1988-02-05
申请人： KOBE STEEL LTD
发明人： OKAMOTO SHOJI , TOYODA TETSUO , KATSUMATA MASAAKI
IPC分类号： B03C3/41
摘要： PURPOSE:To reduce an ozone generation by an air cleaner by using Co group amorphous wire containing a specific percentage of Cr as discharging wire. CONSTITUTION:Corona discharge wire 3 which is tensely spread in front of a charging filter 4 on the air inlet of an air purifier is Co group amorphous wire containing 2-16% of Cr. Consequently, the corrosion inhibitive and anti- oxidation properties of wire 3 and the smoothness of its surface and its chemical uniformity can be improved. Therefore, an ozone generation during corona discharge is reduced, an activated carbon consumption for ozone decomposition by the air cleaner 1 and the operating cost of the air cleaner 1 are cut down.

28. 发明专利

JPS61132966A Alumina-coated corona wire for electrophotography 失效
标题翻译：用于电子显微镜的铝包覆的CORONA线
公开(公告)号：JPS61132966A
公开(公告)日：1986-06-20
申请号：JP25545184
申请日：1984-12-01
申请人： Kobe Steel Ltd
发明人： INOUE TAKESHI , TOYODA TETSUO , OKAMOTO SHOJI
IPC分类号： C22C38/00 , C22C38/02 , G03G15/02 , H01T19/00
CPC分类号： G03G15/0291
摘要： PURPOSE:To obtain a corona wire superior in ozone oxidation resistance and long in life by forming an alumina film on the surface of an Fe-Si-B type amorphous alloy wire in a prescribed thickness by sputtering. CONSTITUTION:The Fe-Si-B type amorphous alloy wire 1 is coated with the alumina film in a thickness of >=5,000 Angstrom by sputtering while the wire 1 is kept on rotating. This wire 1 is higher in tensile strength than that of a tungsten wire, etc., and since the wire 1 is almost equal in thermal expansion coefft. to alumina, the cracking and peeling of the film are prevented and the corona wire superior in ozone oxidation resistance can be obtained.
摘要翻译：目的：通过溅射在规定厚度的Fe-Si-B型非晶合金线材的表面上形成氧化铝膜，得到耐臭氧氧化性优异且寿命长的电晕丝。构成：通过溅射将Fe-Si-B型非晶态合金丝1的厚度> 5000埃的氧化铝膜涂覆，同时丝线1保持旋转。该导线1的拉伸强度高于钨丝等，并且由于导线1的热膨胀系数几乎相等。对氧化铝，防止膜的开裂和剥离，并且可以获得耐臭氧氧化性优异的电晕丝。

29. 发明专利

JPS5623248A STEEL PRODUCT HAVING SUPERIOR CARBURIZING HARDENABILITY 失效
公开(公告)号：JPS5623248A
公开(公告)日：1981-03-05
申请号：JP9955979
申请日：1979-08-03
申请人： KOBE STEEL LTD
发明人： KANEKO KOUJI , TOYODA TETSUO , INOUE TAKESHI , TAKADA HISASHI
IPC分类号： C22C38/00 , C22C38/04 , C22C38/06
摘要： PURPOSE:To obtain steel products for cold working or other working by allowing a relatively large amount of Mn to be contained in low C steel products to give a sufficient carburizing depth in a short time without deteriorating the workability. CONSTITUTION:The titled steel products consists of, by wt.,

30. 发明专利

JPS5594447A SPHEROIDIZING METHOD FOR STEEL BAR WIRE ROD 失效
公开(公告)号：JPS5594447A
公开(公告)日：1980-07-17
申请号：JP273979
申请日：1979-01-13
申请人： KOBE STEEL LTD
发明人： INOUE TAKESHI , KANEKO KOUJI , TOYODA TETSUO
IPC分类号： C21D9/00 , C21D9/52 , C21D9/60 , C21D9/62
摘要： PURPOSE:To obtain a uniform spheroidized structure and considerably shorten the treatment time by rapidly heating a rolled steel bar wire rod in a strand state followed by slow cooling. CONSTITUTION:Coiled rolled wire rod 1 is rapidly heated in strand state W with heater 2 and slowly cooled as superposed spiral wire rod 3 to spheroidize rod 1. For example, in case rod 1 is made of SCM4 (C 0.38%, Si 0.26%, Mn 0.73%, Cr 1.03% and Mn 0.19%), it is spheroidized as follows: rod 1 is heated 2 in strand state W from room temp. (RT) to T1 above Ac1 at a heating rate of 1000 deg.C/sec, relatively rapidly cooled from T1 to T2 (720 deg.C) just below Ac1 with water or the like at a cooling rate of 100 deg.C/sec, slowly cooled as rod 3 from T2 to T3 (680 deg.C) at a cooling rate of 2 deg.C/sec, and air-cooled from T2.

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