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1. 发明专利

JPH0219442A HIGH SATURATED MAGNETIC FLUX DENSITY FERROUS ALLOY HAVING SUPERFINE CRYSTALLINE STRUCTURE 失效
公开(公告)号：JPH0219442A
公开(公告)日：1990-01-23
申请号：JP16956888
申请日：1988-07-07
申请人： NIPPON STEEL CORP
发明人： SATO SHUN , YAMADA TOSHIO , OZAWA TSUTOMU , BABA KENICHI , YAMAMOTO TAKESHI , HAGIWARA HIDEO
IPC分类号： C21D6/00 , C22C38/00 , H01F1/14 , H01F1/153
摘要： PURPOSE:To obtain a ferrous alloy thin plate having high saturated magnetic flux density and having low iron loss by subjecting an amorphous thin plate manufactured by rapidly cooling the molten metal of an Fe alloy having specific compsn. to heat treatment at a specific temp. and regulating the major parts of the structure to fine crystalline one. CONSTITUTION:The molten metal of a ferrous alloy having the compsn. expressed by a general formula FeaXbYcMd (where X denotes at least one kind among Cu, Sb, Pb, Bi, Ag, Sn, S, P, Se, Te and As, Y denotes at least one kind among Nb, Mo, V, Ta, W, Mn and Cr and M denotes at least one kind among B, Si and C; by atom%, (a) denotes 75 to 95%, (b) denotes 0.1 to 3%, (c) denotes 0.1 to 2.5% and (d) denotes 5 to 25%, =60% is amorphous and having >=40mum thickness. The alloy is then heated to its crystallization temp. or above while a magnetic field is impressed to the alloy in the air and >=0.1kg/mm tension is applied thereto in the longitudinal direction to convert >=50% of the structure into fine crystals having =1.45 tesla saturated magnetic flux density can be manufactured.

2. 发明专利

JPS61204308A STEEL MAKING METHOD 失效
公开(公告)号：JPS61204308A
公开(公告)日：1986-09-10
申请号：JP4417085
申请日：1985-03-06
申请人： NIPPON STEEL CORP
发明人： KYOJIMA YOSHIYUKI , BABA KENICHI , NISHIMURA MITSUHIKO , OCHI KIYOSHI
IPC分类号： C21C5/30 , C21C5/32 , C21C5/34 , C21C5/35
摘要： PURPOSE:To improve a secondary combustion rate, to increase the using ratio of an inexpensive cold charge such as steel scrap and to reduce the cost of steel making by estimating exactly the secondary combustion rate in the stage of refining a molten iron subjected to preliminary refining such as desiliconization in an oxygen top blowing converter. CONSTITUTION:An oxygen jet is blown from a lance 11 having main holes 2 and auxiliary holes 3 for ejecting oxygen toward the surface of the molten iron 7 in the converter 1, by which the molten steel is oxidation-carburized and refined to steel. The CO-contg. gas generated by the decarburization reaction is included into free injection regions 16, 17 of the oxygen jet and is subjected to secondary combustion. The temp. of the molten steel 7 is increased by the generated heat, by which the using rate of the inexpensive cold charge scrap is increased and the cost of steel making is reduced. The secondary combustion is effectively utilized while the secondary combusion rate beta expressed by equation (II) is correctly estimated by using K to indicate the speed of the oxygen feed jet steel making is thus executed.

3. 发明专利

JPS60169507A STEEL MAKING METHOD USING AUXILIARY LANCE 失效
公开(公告)号：JPS60169507A
公开(公告)日：1985-09-03
申请号：JP2517984
申请日：1984-02-15
申请人： NIPPON STEEL CORP
发明人： BABA KENICHI , KIYOUJIMA YOSHIYUKI , NISHIMURA MITSUHIKO , NAKAMURA TERUO
IPC分类号： C21C7/072 , C21C5/30 , C21C5/32 , C21C5/34 , C21C5/35
摘要： PURPOSE:To improve the thermal efficiency of a refining operation in a converter in the stage of refining a molten iron to a steel in an oxygen top blown converter by using auxiliary lances in addition to a main lance and burning effectively the CO in forming slag. CONSTITUTION:A molten iron 3 subjected preliminarily to desiliconization, desulfurization and dephosphorization treatments is charged into an oxygen top blown converter 1 having gas blowing tuyeres 7 in the bottom and gaseous oxygen is blown through a main top blowing lance 4 to the molten metal surface to oxidize the C contained therein thereby decarburizing and refining the molten iron and producing a molten steel. Oxygen is fed in such a way that the molten metal surface is recessed to 80-400mm. depth by the oxygen blown through the main lance 4 in this case and gaseous oxygen is blown through plural auxiliary lances 8 provided around the lance 4 at

4. 发明专利

JPH04367201A AMORPHOUS THIN-BELT SATURABLE MAGNETIC CORE 失效
公开(公告)号：JPH04367201A
公开(公告)日：1992-12-18
申请号：JP14360391
申请日：1991-06-14
申请人： NIPPON STEEL CORP
发明人： BABA KENICHI , SATO SHUN , YAMADA TOSHIO
IPC分类号： C22C45/04 , H01F1/153 , H01F27/24
摘要： PURPOSE:To provide an amorphous thin-belt saturable magnetic core wherein the request of a low iron loss and a high squareness ratio is satisfied even at a high frequency of 300kHz or higher. CONSTITUTION:An amorphous thin-belt saturable magnetic core whose magnetostriction is small is composed of CoaFebMocSndSieBf having magnetostriction of -0.1X10 to -1.0X10 , and it is thinner than 15mum. The magnetic core can satisfy the request of both a low iron loss and a high squareness ratio even at a high frequency. As a result, when it is used for a magnetic amplifier in a switching power supply at 300kHz or higher, heat generated from the iron core is small as compared with that in conventional cases, its power supply can be made small-sized and its cooling method can be simplified.

5. 发明专利

JPH0428996A CRUCIBLE FOR MANUFACTURING WIDE QUENCHING SOLIDIFYING THIN STRIPE 失效
公开(公告)号：JPH0428996A
公开(公告)日：1992-01-31
申请号：JP13312990
申请日：1990-05-23
申请人： NIPPON STEEL CORP
发明人： SATO YUICHI , SATO SHUN , KIKUCHI TOSHIJI , BABA KENICHI
IPC分类号： B22D11/06 , C22C1/00 , C22C1/02 , F27B14/10
摘要： PURPOSE:To prevent deflection even if the number of nozzle openings is increased, and to perform a stable mass production without increasing a melting time by providing the nozzle openings for injecting melted metal in a bottom in an elliptical or rectangular section in a depth direction. CONSTITUTION:In order to prevent deflection of a crucible generated when making a wide quenching solidifying thin stripe, nozzle openings for injecting melted metal are provided in a bottom in an elliptical or rectangular section in a depth direction. It is desired to set the length of a long side to 300mm or longer as the size of the section in the depth direction of the crucible. If the length of the long side of the crucible is 300mm or longer, the length of a work coil 2 at the short side is set to 130mm or longer so as to suppress the deflection of the bottom of the crucible at the time of melting a sample. Then, it takes a time to melt the sample, and does not achieve the purpose of this invention. Therefore, it is desirable to set the length of the short side of the crucible to 100mm or less.

6. 发明专利

JPH03278501A SOFT MAGNETIC CORE MATERIAL AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH03278501A
公开(公告)日：1991-12-10
申请号：JP7984190
申请日：1990-03-28
申请人： NIPPON STEEL CORP
发明人： BABA KENICHI , ONO TAKAHIDE , KOIKE MAKOTO
IPC分类号： C22C38/00 , H01F1/147 , H01F1/22
摘要： PURPOSE:To obtain a flexible magnetic core material having both characteristics of high magnetic flux density and high permeability and small magnetic core loss at the same time by making the title material into a formed product, where a material containing the specific quantity of Si and Al with a remainder consisting substantially of Fe is deposited and solidified and where an oxide insulating layer is formed in a grain boundary and a relative density is not less than a specific value. CONSTITUTION:The title material is made into a formed product, where a material containing 0.2-17wt.% in total of one or two kinds of Si and Al with a remainder consisting substantially of Fe is deposited and solidified and where an oxide insulating layer is formed in a grain boundary and a relative density is not less than 95%. Also, an Fe-based alloy containing at least one kind of Si and Al is melted, and thereafter deposited and solidified in the form of droplets in an atmosphere containing oxygen or further fabricated and subsequently heat-treated, to manufacture the flexible magnetic core material. For example, an Fe-Si alloy containing 8.0wt.% Si is melted and thereafter dispersed by gas-atomizing method using Ar containing oxygen to be deposited on a metal plate, which is then rolled as it is at a high temperature and subjected to a heat treatment at 900 deg.C for 30 minutes in an inert gas.

7. 发明专利

JPS59182909A Lance for refining in steel making 失效
标题翻译：钢铁精炼
公开(公告)号：JPS59182909A
公开(公告)日：1984-10-17
申请号：JP5672983
申请日：1983-03-31
申请人： Nippon Steel Corp
发明人： NISHIMURA MITSUHIKO , BABA KENICHI , ISHIKAWA HIDEKI , SAITOU TSUTOMU
IPC分类号： C21C7/072 , C21C5/46
CPC分类号： C21C5/4606
摘要： PURPOSE:To decrease spitting and to prevent iron loss in a lance for decarburization refining by specifying the number of nozzles at the top end of the lance, disposing symmetrically the nozzles with respect to the axis of the lance and inclining the nozzles at a specific angle to the axis of the lance. CONSTITUTION:The number of nozzles at the top end of a tap blowing lance which performs decarburization treatment to a molten iron after a preliminary treatment is specified at >=4 pieces and the nozzles are disposed symmetrically with respect to the central axis of the lance in such a way that the respective nozzle holes incline at 16-24 deg. with respect to the axis of the lance. The number of the nozzles is particularly preferably one at the center and six on the outside circumference, total seven pieces, and the six pieces on the outside circumference maintains an equal interval by each 60 deg.. The recess formed on the bath surface is thus made soft blow, by which spitting is decreased.
摘要翻译：目的：为了减少喷吐，并通过指定喷枪顶端的喷嘴数目来防止喷枪中的铁脱落，用于脱硫精炼，对称地将喷嘴相对于喷枪的轴线布置并以特定角度倾斜喷嘴到长矛的轴线。构成：在初步处理后对铁水进行脱碳处理的抽头喷枪顶端的喷嘴数量规定为≥4个，喷嘴相对于喷枪的中心轴对称地设置这样一种方式使得相应的喷嘴孔在16-24度处倾斜。相对于喷枪的轴线。喷嘴的数量特别优选为一个在中心，六个在外圆周上共七个，并且外周六个部件保持相等的间隔每60度。因此形成在浴表面上的凹槽因此是造成轻微的打击，吐痰减少。

8. 发明专利

JPH0530285B2 失效
公开(公告)号：JPH0530285B2
公开(公告)日：1993-05-07
申请号：JP12072388
申请日：1988-05-19
申请人： NIPPON STEEL CORP
发明人： SATO SHUN , OZAWA TSUTOMU , YAMADA TOSHIO , BABA KENICHI
IPC分类号： C22C38/00 , B22D11/06 , C22C19/00 , C22C19/07 , C22C45/04 , H01F1/153 , H01F3/04 , H01F27/24 , H01F27/255 , H01F41/02

9. 发明专利

JPH04114410A AMORPHOUS ALLOY FOR HIGH FREQUENCY MAGNETIC CORE 失效
公开(公告)号：JPH04114410A
公开(公告)日：1992-04-15
申请号：JP23403690
申请日：1990-09-04
申请人： NIPPON STEEL CORP
发明人： SATO SHUN , BABA KENICHI , YAMADA TOSHIO
IPC分类号： H01F1/34 , C22C38/00 , C22C45/02 , H01F1/14 , H01F1/153
摘要： PURPOSE:To obtain a Co-radical amorphous alloy, which satisfies magnetic characteristics and maintains the various characteristics required against the practical component in a well-balanced manner by a method wherein the material, having the composition indicated by CoaFebMocSdSieBf and also having the above-mentioned a to f (atomic %) in specific range, is heat-treated. CONSTITUTION:The raw material or the parent alloy, which is blended so as to obtain the range of composition which is indicated by CoaFebMocSdSieBf, of a=67 to 71, b=3 to 6, c=1 to 3,-.-1 to 0.10, e=5 to 19, f-7 to 16 and a+b+c+d+f=100 atomic %, is dissolved and a continuous thin band is formed by an ordinary liquid quenching method. After the above-mentioned thin band has been molded into a wound core of the prescribed measurements, and it is annealed. Soft magnetic characteristics are improved and a new effect is added by the addition of compound material of Mo and S, the loss or coercive force in a high frequency state is reduced, the degree of freedom in annealing condition is widened, distortion and deterioration are reduced, corrosion-resisting property is improved, and the practical characteristics such as the degree of freedom of composition and the like is also improved.

10. 发明专利

JPH0442508A AMORPHOUS ALLOY FOR HIGH FREQUENCY MAGNETIC CORE AND HIGH FREQUENCY MAGNETIC CORE 失效
公开(公告)号：JPH0442508A
公开(公告)日：1992-02-13
申请号：JP15119090
申请日：1990-06-08
申请人： NIPPON STEEL CORP
发明人： SATO SHUN , BABA KENICHI , YAMADA TOSHIO , YAMASHITA SATOSHI , HAGIWARA HIDEO
IPC分类号： H01F1/153 , C22C45/04 , H01F1/14 , H01F17/04 , H01F27/24
摘要： PURPOSE:To obtain a Co-radical amorphous alloy and a high frequency magnetic core which hold various characteristics with a good balance in addition to satisfying a magnetic characteristic by using an amorphous alloy consisting of a specified composition. CONSTITUTION:Co is regulated with 67 - 71%, and samely Fe is 3 - 6%, Si is 5 - 19%, B is 7 - 16%, Mo is 1 - 3%, and Sn is regulated as 0.05 - 1.0%. A material or a mother alloy compounded to satisfy the composition range is fused and an amorphous continuous thin tape is formed by a liquid rapid cooling method. The amorphous alloy thin tape is shaped into a wound core of a predetermined size, followed by annealing.Because a high-resistance surface coating is already formed during the rapid cooling, an insulating coating is unnecessary. A strength of a magnetic field of 10 times a coercive force of the alloy is sufficient. The annealing temperature is properly in the range of Tx - 120 deg.C to Tx - 20 deg.C, wherein Tx is a crystallization starting temperature. Also, if a high permeability is needed, magnetic field should be applied at right angles in a circumferential direction of the core.

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