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31. 发明专利

JPH0810910A PRODUCTION OF RAPIDLY COOLED METALLIC THIN STRIP 失效
公开(公告)号：JPH0810910A
公开(公告)日：1996-01-16
申请号：JP14962394
申请日：1994-06-30
申请人： KAWASAKI STEEL CO
发明人： OKABE SEIJI , YUKIMOTO MASAO
IPC分类号： B22D11/06 , B22D11/10
摘要： PURPOSE:To produce a rapidly cooled solidified alloy thin strip having excellent surface characteristics by holding the part near the part where an injected molten metal accumulates in a gaseous atmosphere consisting of a prescribed compsn. CONSTITUTION:This molten metal is injected from a molten metal nozzle 1 to form a molten paddle 3 between the molten metal and a cooling roll 2. The molten metal is rapidly cooled and solidified by extraction of the heat from the cooling roll 2b, by which a thin strip 4 is formed. At this time, carbon dioxide is blown to the paddle 3 by an injection nozzle 5 and nitrogen is blown by an injection nozzle 6 to the surface upstream of rotation of the cooling roll 2, by which the part near the paddle 3 is held in the atmosphere of the prescribed gaseous oxygen and carbon dioxide concn. The injection angle of the injection nozzle 6 is preferably at 0 to 50 deg..

32. 发明专利

JPH07314098A COOLING ROLL FOR PRODUCING RAPID COOLED METAL STRIP 失效
公开(公告)号：JPH07314098A
公开(公告)日：1995-12-05
申请号：JP11519094
申请日：1994-05-27
申请人： KAWASAKI STEEL CO
发明人： YUKIMOTO MASAO , OKABE SEIJI
IPC分类号： B22D11/06 , C23C30/00
摘要： PURPOSE:To obtain a cooling roll, by which an amorphous strip having good surface characteristic can be produced having a little roughening of the roll surface, by forming a specific composition of plating layer on the surface thereof. CONSTITUTION:The cooling roll 5 for rapidly solidifying molten metal is composed by shrinkage fitting a copper or a copper alloy-made sleeve 7 on the outer periphery of an arbor 6. A flowing passage 8 for cooling water is formed between the arbor 6 and the sleeve 7 by working grooves extended on the peripheral surface of the sleeve 7 to cool the sleeve 7. Then, the plating layer 9 composed of component composition containing >=96.0wt% Fe and 0.05-3.9wt% Si, is formed on the surface of this sleeve 7. Further, it is desirable to be with 0.1-0.4mm thickness of the plating layer 9 and

33. 发明专利

JPH06269907A PRODUCTION OF THIN METAL STRIP AND DEVICE THEREFOR 失效
公开(公告)号：JPH06269907A
公开(公告)日：1994-09-27
申请号：JP6179393
申请日：1993-03-22
申请人： KAWASAKI STEEL CO
发明人： SHIGA NOBUISA , YAMANE HIROSHI , KOGIKU FUMIO , YUKIMOTO MASAO , OKABE SEIJI
IPC分类号： B22D11/06
摘要： PURPOSE:To produce a thick amorphous thin strip through single roll method by shutting off the air, which cooling roll surface accompanies from the back of a nozzle slit, keeping a paddle in CO gas atmosphere and specifying an injection pressure of molten metal and a rotating peripheral speed of cooling roll. CONSTITUTION:When a paddle 3 being long in the rotating direction of a cooling roll 5 is stably held with a single slit nozzle 1 and a thick amorphous thin strip 4, that is, an amorphous thin strip 4 of >=35mum, =20kPa, =15m/s,

34. 发明专利

JPH06269906A PRODUCTION OF RAPIDLY SOLIDIFIED THIN METAL STRIP BY SINGLE ROLL METHOD 失效
公开(公告)号：JPH06269906A
公开(公告)日：1994-09-27
申请号：JP6203493
申请日：1993-03-22
申请人： KAWASAKI STEEL CO
发明人： YAMANE HIROSHI , OKABE SEIJI , YUKIMOTO MASAO , OZAWA MICHIHARU , SHIGA NOBUISA
IPC分类号： B22D11/06
摘要： PURPOSE:To obtain a thin metal strip with a small deviation of strip thickness in width direction by placing a pouring nozzle more to the outlet side on the direction satisfying the prescribed inequality with the product of the angle between a roll tangential line and horizontal line at the point, where the center line of a pouring nozzle opening intersects with a roll drum, and a flow rate of molten metal. CONSTITUTION:In the production method of rapidly solidified thin metal strip by single roll method, a pouring nozzle 2 is placed move to the outlet side such that the angle theta between a roll tangential line L and horizontal line H at the point, where the center line of a pouring nozzle 2 opening on the cross section vertical to the axis of a cooling roll 1 satisfies the theta.(1-sintheta)/2

35. 发明专利

JPH05156342A CIRCULATING TYPE VACUUM DEGASSING APPARATUS 失效
公开(公告)号：JPH05156342A
公开(公告)日：1993-06-22
申请号：JP32043291
申请日：1991-12-04
申请人： KAWASAKI STEEL CO
发明人： INAGAKI AKIRA , OKABE SEIJI
IPC分类号： C21C7/10
摘要： PURPOSE:To reduce sticking of metal in a vessel caused by molten steel splash in the vacuum degassing vessel and to improve the degassing efficiency in the vessel. CONSTITUTION:Two uptake tubes 7 arranged at the bottom part of the degassing vessel 10 are arranged with inclining angle in the same direction on concentric circle 14 along the inner periphery of the side wall in the degassing vessel 10. Further, one downtake tube 8 at the center of the bottom part of the degassing vessel 10 is arranged in the perpendicular direction. As the molten steel 9 is risen obliquely from two inclined uptake tubes 7, spattering of the splash in the perpendicular direction is weakened and the sticking of the metal to the upper part in the vessel can be reduced. By rotation of the molten steel formed in the degassing vessel 10, stirring is strengthened and the degassing efficiency is improved.

36. 发明专利

JP2003171718A MANUFACTURING METHOD OF MAGNETIC STEEL SHEET OF EXCELLENT MEAN MAGNETIC CHARACTERISTIC IN ROLLED SURFACE 审中-公开
公开(公告)号：JP2003171718A
公开(公告)日：2003-06-20
申请号：JP2001370082
申请日：2001-12-04
申请人： KAWASAKI STEEL CO
发明人： KUROSAWA MITSUMASA , HAYAKAWA YASUYUKI , OKABE SEIJI , IMAMURA TAKESHI
IPC分类号： B21B3/02 , C21D8/12 , C22C38/00 , C22C38/14
摘要： PROBLEM TO BE SOLVED: To stably provide a silicon steel sheet of excellent mean magnetic characteristic in a rolled surface by adequately setting the mixing ratio of ä110} structure and ä100} structure. SOLUTION: When manufacturing the magnetic steel sheet with a slab having the composition consisting of, by mass, 0.005-0.1% C, 2.5-4.5% Si, 0.01-2.0% Mn, and 0.001-0.015% Al, with the composition of elements forming deposits of Se, S, O, N, B, Ti, Nb, V and Zr being suppressed to ≤0.005% as a stock, (a) 0.01-0.50% Sb and/or Sn is contained in the slab, (b) in the annealing immediately before the final cooling, the cooling is performed at the mean cooling speed of ≤500°C/hour between the soaking temperature and 500°C, and (c) the mean crystal grain size of the steel sheet immediately before the final cooling is set to be ≥100 μm. COPYRIGHT: (C)2003,JPO

37. 发明专利

JP2001303215A LOW CORE LOSS GRAIN ORIENTED SILICON STEEL SHEET AND ITS PRODUCING METHOD 失效
公开(公告)号：JP2001303215A
公开(公告)日：2001-10-31
申请号：JP2000123754
申请日：2000-04-25
申请人： KAWASAKI STEEL CO
发明人： OKABE SEIJI , YAMAGUCHI HIROSHI , MURAKI MINEO
IPC分类号： C23C22/00 , C21D8/12 , C22C38/00 , C23F1/28 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a grain oriented silicon steel sheet in which the surface of ferrite in a silicon steel sheet subjected to mirror finishing or not formed with a forsterite film can be formed with a film with tight adhesion and a grain oriented silicon steel sheet extremely low in core loss obtained by further forming a tension application type insulating film thereon and to provide a method for producing the same grain oriented silicon steel sheets extremely low in core loss. SOLUTION: In the grain oriented silicon steel sheet, the surface of ferrite is provided with fine, stripy grooves with a depth of 0.05 to 2 μm directly applied thereon at the intervals of 0.05 to 2 μm. The fine, stripy grooves suitably elongate to the direction orthogonal to the rolling direction or to the direction within ±45 deg. from the above orthogonal direction.

38. 发明专利

JP2000104143A LOW IRON LOSS GRAIN ORIENTED SILICON STEEL SHEET LOW IN COERCIVE FORCE AND ITS PRODUCTION 失效
公开(公告)号：JP2000104143A
公开(公告)日：2000-04-11
申请号：JP27512398
申请日：1998-09-29
申请人： KAWASAKI STEEL CO
发明人： MURAKI MINEO , OKABE SEIJI , KOMATSUBARA MICHIRO , YAMAGUCHI HIROSHI
IPC分类号： H01F1/16 , C21D8/12 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/60 , C23C22/00
摘要： PROBLEM TO BE SOLVED: To provide a grain oriented silicon steel sheet in which the formation of a forsterite film is advantageously suppressed, and the reduction of coercive force is realized at the time of smoothening the surface of ferrite in the steel sheet and reducing iron loss therein. SOLUTION: This steel sheet is the one contg. 1.5 to 7.0 wt.% Si, in which the content of chlorine remaining in the steel sheet is

39. 发明专利

JPH11111516A DIRECTIONAL ELECTROMAGNETIC STEEL PLATE FOR LAMINATED CORE 失效
公开(公告)号：JPH11111516A
公开(公告)日：1999-04-23
申请号：JP27252197
申请日：1997-10-06
申请人： KAWASAKI STEEL CO
发明人： OKABE SEIJI , ISHIDA MASAYOSHI
IPC分类号： C21D8/12 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To reduce the increase in noise at a 45 deg. junction part of a laminated core, by iteratively forming a linear notch satisfying a specified range of angle with respect to the longitudinal direction of a steel plate on the surface of the steel plate, and inverting the formation pattern of the linear notch within a length used as the laminated core. SOLUTION: At a 45 deg. junction part of a laminated core, in the case where an angle made by a linear notch and the longitudinal direction is 80 deg., an angle made by the linear notch and an junction oblique side is 35 deg. or 55 deg.. In the case of 35 deg., noise is greater than in the case of 55 deg.. Thus, the formation pattern of the linear notch is inverted within a length used as the laminated core, and the angle made by the junction oblique side and the linear notch is caused to be 55 deg. at both ends. Thus, the magnetostriction and hence the noise at the 45 deg. junction part is reduced. Moreover, a linear notch is formed so as to be symmetrical on both sides of a centerline of the steel plate. Thus, the angle made by each junction oblique side and the linear notch is 55 deg. at both 45 deg. junction parts, and reduction in the noise can be realized.

40. 发明专利

JPH10130798A IRON BASE AMORPHOUS ALLOY IRON CORE FOR POWER TRANSFORMER AND ITS PRODUCTION 失效
公开(公告)号：JPH10130798A
公开(公告)日：1998-05-19
申请号：JP29010696
申请日：1996-10-31
申请人： KAWASAKI STEEL CO
发明人： OKABE SEIJI , SHIGA NOBUISA , KOGIKU FUMIO , YUKIMOTO MASAO
IPC分类号： C21D6/00 , C21D1/76 , C22C45/02 , H01F1/153 , H01F27/24 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To effectively obtain an iron base amorphous alloy iron core having low core loss by subjecting an iron core obtd. by adding small amounts of V, Cr and Mn to an Fe-B-Si-C series amorphous alloy having a specified compsn. to annealing while the d.c. magnetic field is applied thereto under specified conditions. SOLUTION: A thin band of an amorphous ally contg., by atom, 10 to 14% B, 6 to 14% Si and 0.1 to 1.5% C, contg. one or >= two kinds selected among V, Cr and Mn by 0.4 to 1.0% and the balance substantial Fe with inevitable impurities is worked into an iron core. This iron core is annealed while the d.c. magnetic field of 50 to

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