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1.发明授权
公开(公告)号：US5066343A
公开(公告)日：1991-11-19
申请号：US520109
申请日：1990-05-07
申请人： Shozaburo Nakashima , Kenzo Iwayama , Isao Iwanaga
发明人： Shozaburo Nakashima , Kenzo Iwayama , Isao Iwanaga
CPC分类号： C21D8/1233 , C21D8/1211
摘要： Disclosed is a process for preparing a thin grain oriented electrical steel sheet having a final thickness of 0.05 to 0.25 mm from a silicon steel cast strip having a thickness of 0.2 to 5 mm and directly obtained from the molten steel by the synchronous continuous casting machine, in which the speed of movement of the strand relative to the inner wall surface of the casting mold is the same, and by which the traditional hot rolling process can be omitted, comprising 0.050 to 0.120% by weight of C, 2.8 to 4.0% by weight of Si and 0.05 to 0.25% by weight of Sn, wherein the starting silicon cast strip further comprises up to 0.035% by weight of S and 0.005 to 0.035% by weight of Se, with the proviso that the total amount of S and Se is in the range of 0.015 to 0.060% by weight, 0.050 to 0.090% by weight of Mn, with the proviso that the Mn content is in the range of {1.5.times.[content (% by weight) of S+content (% by weight) of Se]} to {4.5.times.[content (% by weight) of S+content (% by weight) of Se]} % by weight, 0.0050 to 0.0100% by weight of N, and {[27/14].times.content (% by weight) of N+0.0030} to {[27/14].times.content (% by weight) of N+0.0150} % by weight of acid-soluble Al.
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2.发明授权Method of producing grain oriented electrical steel sheet having high magnetic flux 失效具有高磁通量的晶粒取向电工钢板的制造方法
公开(公告)号：US5051138A
公开(公告)日：1991-09-24
申请号：US501601
申请日：1990-03-29
申请人： Isao Iwanaga , Kenzo Iwayama
发明人： Isao Iwanaga , Kenzo Iwayama
CPC分类号： C21D8/1211 , C21D8/1255 , C21D8/1283
摘要： A method of producing a grain oriented electrical steel sheet having a high magnetic flux density comprises the steps of continuously rapid quench solidifying a molten steel essentially consisting of 0.03 to 0.10% of C, 2.5 to 4.5% of Si, 0.02 to 0.15% of Mn, 0.01 to 0.04% of Al acid soluble by weight and the remainder substantially Fe, to obtain a thin strip, subjecting the thin strip to cold rolling one or two or more stages, with an annealing therebetween, decarburization annealing, and finishing annealing wherein the content of S in the molten steel is 0.01% or less the content of N in the molten steel is 0.003% or less, and sulfide and nitride are contained in the annealing separator for the finishing annealing.
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3.发明授权Process for preparing rollable metal sheet from quenched solidified thin cast sheet as starting material 失效从淬火固化的薄铸片作为原料制备可卷曲的金属片的方法
公开(公告)号：US5286315A
公开(公告)日：1994-02-15
申请号：US956931
申请日：1992-10-02
CPC分类号： C22F1/00 , B22D11/06 , C21D7/06 , C21D8/0205 , C22F1/04 , C22F1/08 , C22F1/10 , Y10T29/49991
摘要： The present invention relates to a process for preparing a metal sheet having an excellent rolling property, i.e., a rollable metal sheet, which process comprises the basic steps of: continuously feeding a molten metal on a cooling material having one or two cooling surfaces being transferred and renewed for quench solidification, to thereby prepare a thin cast sheet; impinging a small rigid body particle against the surface of the resultant thin cast sheet, to work the cast sheet; heat-annealing the worked sheet in such a manner that the worked region becomes a fine recrystallized grain layer; and subjecting the cast sheet to a cold or warm rolling, optionally after a removal of oxides present on the surface; and an optional step of heat-treating the rolled sheet for working. The process of the present invention is applicable to the production of various known rollable metal or alloy sheets, such as soft steel, stainless steel, silicon steel, nickel-iron, cobalt-iron, nickel, aluminum, and copper sheets.
摘要翻译： PCT No.PCT / JP90 / 00442 Sec。 371日期1990年11月29日第 102（e）1990年11月29日PCT PCT 1990年3月30日PCT公布。 出版物WO90 / 11849 1990年10月18日的日期。本发明涉及一种制备具有优异的轧制性能的金属板的方法，即可卷绕的金属板，该方法包括以下基本步骤：将熔融金属连续地供给到具有 一个或两个冷却表面被转移和更新以进行淬火固化，从而制备薄铸片; 将小的刚体颗粒撞击所得薄铸片的表面，以对铸片进行加工; 以加工区域成为精细再结晶晶粒层的方式对加工薄板进行热退火; 并且任选地在去除存在于表面上的氧化物之后对铸片进行冷或热轧; 以及对加工用卷材进行热处理的任选步骤。 本发明的方法适用于生产各种已知的可轧制金属或合金片材，例如软钢，不锈钢，硅钢，镍 - 铁，钴 - 铁，镍，铝和铜片。
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4.发明授权
公开(公告)号：US5049204A
公开(公告)日：1991-09-17
申请号：US501133
申请日：1990-03-29
IPC分类号： C21D8/12
CPC分类号： C21D8/1211 , C21D8/1233
摘要： The present invention concerns a process for producing a grain-oriented electrical steel sheet by means of a rapid quench-solidification process, for example, a continuous casting by a twin roll strip caster. The feature of the present invention resides in quenching to solidify molten steels into a thin cast sheet of 0.7 to 3.0 mm thickness, at a cooling rate of greater than 50.degree. C./sec. in the central portion along the direction of thickness of the thin cast sheet, cooling the sheet at a cooling rate of greater than 10.degree. C./sec. in a temperature range between 1300.degree. to 900.degree. C. and then applying cold rolling for once or twice or more annealing the thin cast steel for a period between 30 seconds and 30 minutes in a temperature range between 950.degree. and 1,200.degree. C. and subsequently including intermediate annealing under a final cold rolling reduction rate of not less than 80%. In the present invention, precipitates that function as an inhibitor can finely be dispersed by adding 0.02 to 0.2% of Nb into the molten steel ingredients thereby to stably produce a grain-oriented electrical steel sheet of high magnetic flux density by means of a rapid quench-solidification process. Further, since a thin cast sheet of desired thickness within a range from 0.7 to 3.0 mm can be produced by the rapid quench-solidification process, the thin cast sheet can be cold rolled to a final thickness of less than 150 .mu.m by applying a cold rolling at a reduction rate optimum to magnetic properties, and an extremely thin grain-oriented electrical steel sheet of less than 150 .mu.m (0.15 mm) thickness can be produced in a simple production process and at a reduced cost, which so far has been remarkably difficult and expensive to produce.
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5.发明授权
公开(公告)号：US4824493A
公开(公告)日：1989-04-25
申请号：US13887
申请日：1987-02-12
申请人： Yasunari Yoshitomi , Kenzo Iwayama
发明人： Yasunari Yoshitomi , Kenzo Iwayama
CPC分类号： C21D8/1266 , C22C38/02 , C21D8/1261
摘要： In the production of a grain-oriented electrical steel sheet by utilizing an AIN main inhibitor and at least twice cold-rolling with a heavy final reduction, improved magnetic properties are stably obtained by controlling the cooling speed (R) in the cooling process of a hot-rolled sheet annealing (R.gtoreq.5.degree.C./sec from 600.degree.-200.degree. C.) and by inter-pass aging (50.degree.-500.degree. C. for 1 minute or more) during the first cold-rolling.
摘要翻译： 在通过利用AIN主抑制剂和至少两次重结晶还原的冷轧制造方向的电磁钢板时，通过控制冷却过程中的冷却速度（R）稳定地获得改善的磁性能 热轧板退火（R> / = 5℃/秒，从600℃-200℃），并在第一次冷轧期间通过熟化（50℃-500℃，1分钟以上） 滚动
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公开(公告)号：US5102477A
公开(公告)日：1992-04-07
申请号：US759189
申请日：1991-09-10
CPC分类号： C22F1/10 , B22D11/06 , C21D8/1211 , Y10T29/49991
摘要： A method of producing Fe-Ni system high permeability alloy comprising the steps of obtaining cast steel sheet 0.3 to 7 mm thick by direct casting of a steel melt containing 35 to 85% by weight of nickel with the balance of iron and unavoidable impurities, forcibly cooling the sheet from solidification to 1200.degree. C. at a cooling rate of at least 75.degree. C./s, and cold-rolling the sheet at a reduction ratio of at least 20%.
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公开(公告)号：US4268326A
公开(公告)日：1981-05-19
申请号：US47801
申请日：1979-06-11
申请人： Kenzo Iwayama , Osamu Tanaka
发明人： Kenzo Iwayama , Osamu Tanaka
CPC分类号： C21D3/04 , C21D8/1255 , C21D9/46 , C21D8/1272
摘要： An electrical silicon steel sheet composed of secondary or tertiary recrystallized grains oriented in one or two directions, is produced by a process comprising a decarburization annealing operation in an oxidation atmosphere in which a ratio of PH.sub.2 O/PH.sub.2 wherein PH.sub.2 O represents a partial pressure of water vapor in said oxidation atmosphere and PH.sub.2 represents a partial pressure of hydrogen in said oxidation atmosphere, is adjusted to a value of 0.15 or more in an initial stage of said decarburization annealing operation and, then, to a value smaller than that in said initial stage in a final stage of said decarburization annealing operation.
摘要翻译： 通过包括在氧化气氛中的脱碳退火操作的方法制备由二次或三次重结晶晶粒组成的电工硅钢板，其中PH 2 O / PH 2的比例，其中PH 2 O表示水蒸汽的分压 在所述氧化气氛中，在所述氧化气氛中，PH2表示氢的分压，在所述脱碳退火操作的初始阶段，将其调整为0.15以上，然后，与所述初始阶段 是所述脱碳退火操作的最后阶段。
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8.发明授权Method for producing grain-oriented electrical steel sheet with very high magnetic flux density 失效具有极高磁通密度的晶粒取向电工钢板的制造方法
公开(公告)号：US4888066A
公开(公告)日：1989-12-19
申请号：US245828
申请日：1988-09-16
CPC分类号： C21D8/1272 , C21D1/76 , C21D9/52
摘要： A method of producing grain-oriented electrical steel sheet with a very high magnetic flux density, is characterized by increasing the partial pressure of the N.sub.2 in the annealing atmosphere at the intermediate stage between the start and the finish of the secondary recrystallization, and by ensuring the temperature differential in the coil does not exceed 100.degree. C. during changes to the annealing atmosphere. In addition, the rate of temperature increase at the hottest part of the coil is kept to a maximum of 13.degree. C./hr at least part of the time the coolest part of the coil is between 850.degree. C. and 1100.degree. C.
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公开(公告)号：US4595426A
公开(公告)日：1986-06-17
申请号：US709419
申请日：1985-03-07
CPC分类号： C22C38/02
摘要： Extremely low watt-loss of W.sub.17/50 .ltoreq.0.88 w/kg is provided by the combination of extremely low carbon, silicon and nitrogen contents; a thin sheet thickness of 0.15 to 0.23 mm; a high magnetic flux density B.sub.10 .gtoreq.1.89 T; and copresence of coarse and fine (2 mm or less) grains, the distance (ND) between the fine grains controlled to 2.0 to 8.0 mm.
摘要翻译： 通过极低碳，硅和氮含量的组合提供W17 / 50的极低瓦特损失0.88w / kg; 薄板厚度为0.15〜0.23mm; 高磁通密度B10> = 1.89T; （2mm以下）的微细粒子间的距离（＆lt;上升＆amp; N）控制在2.0〜8.0mm。
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公开(公告)号：US5394721A
公开(公告)日：1995-03-07
申请号：US149253
申请日：1993-11-09
申请人： Kenzo Iwayama , Tsunehiro Shimizu , Hidehiko Sumitomo , Kunihide Takashima , Akira Amemura , Osamu Tanaka
发明人： Kenzo Iwayama , Tsunehiro Shimizu , Hidehiko Sumitomo , Kunihide Takashima , Akira Amemura , Osamu Tanaka
CPC分类号： H01F41/0233 , H01F1/14725 , Y10T29/49078
摘要： A method of producing permalloy cores comprising the steps of coating at least one surface of permalloy strip with a slurry consisting of water containing 1 to 5 percent by weight of magnesium hydroxide (Mg(OH).sub.2) powder and the addition of one or more selected from a binder, a thickening agent and a defoaming agent and drying said coating, slitting the permalloy strip thus covered with a coating that when dry is 0.1 to 50 .mu.m thick, more preferably 0.5 to 10 .mu.m thick, and contains not less than 50 percent by weight Mg(OH).sub.2, and more preferably not less than 80 percent by weight Mg(OH).sub.2, as the main constituent, to a final width, or first to an intermediate width if necessary, winding or punching the final width strip to obtain wound or laminated punched cores, and subjecting the core materials to magnetization annealing.
摘要翻译： 一种生产坡莫合金芯的方法，包括以下步骤：用含有1至5重量％氢氧化镁（Mg（OH）2）粉末的水组成的浆料涂覆坡莫合金带材的至少一个表面，并加入一个或多个选定的 从粘合剂，增稠剂和消泡剂中干燥，并干燥所述涂层，切割由这样的涂层覆盖的坡莫合金带，该涂层当干燥时厚度为0.1-50μm，更优选为0.5-10μm，并且不小于 50重量％的Mg（OH）2，更优选不小于80重量％的Mg（OH）2作为主要成分，至最终宽度，或如果需要的话，可以首先到中间宽度，卷绕或冲压最终的 以获得卷绕或层压冲压芯，并对芯材进行磁化退火。
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