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1.发明授权Method of making non-oriented electrical steel sheets having excellent magnetic properties under low magnetic field 失效制造低磁场下具有优异磁性的非定向电工钢板的制造方法
公开(公告)号：US5108522A
公开(公告)日：1992-04-28
申请号：US425183
申请日：1989-10-12
CPC分类号： C21D8/1272
摘要： The present invention is to produce non-oriented electrical steel sheets having excellent magnetic property under low magnetic field by effectively checking thermal stress from introducing during cooling in a final annealing without decreasing productivity, for which when a silicon steel sheet having passed a cold rolling is cooled after a final continuous annealing, especial cooling conditions are specified only to a temperature range giving bad influences to the magnetic properties under the low magnetic field so as to prevent the introduction of the thermal strain.
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公开(公告)号：US5062906A
公开(公告)日：1991-11-05
申请号：US427108
申请日：1989-10-12
CPC分类号： C21D8/1222 , C21D8/12
摘要： The present invention is to produce non-oriented electrical steel sheet by a hot direct rolling. The slab is directly sent to the hot rolling without the brief soaking, whereby others than AlN inevitably precipitated check the precipitation of AlN, a roughing and a finish rolling are performed at determined reduction rates, and a delay time is taken between the roughing and the finish rolling, and besides a finish rolling is performed at not more than Ar.sub.3 so that precipitating nuclei of AlN are effectively introduced into the steel, and uniform and coarse AlN precipitation is formed by a coiling at temperature of more than 700.degree. C., thereby to enable to provide uniform and satisfied ferrite grain growth at the recrystallization annealing.
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3.发明授权Method of making non-oriented electrical steel sheets having excellent magnetic properties 失效制造具有优异磁性的非定向电工钢板的制造方法
公开(公告)号：US5164024A
公开(公告)日：1992-11-17
申请号：US476507
申请日：1990-06-13
CPC分类号： C21D8/1222 , C21D8/1261 , C21D8/1277
摘要： A method of producing non-oriented electrical steel sheets having excellent magnetic properties which comprehends heating a steel at the low temperature for hot rolling, thereby to minimize re-solution of AlN particles when a slab is cooled, so that coarsening of AlN particles is facilitated during annealing the hot rolled sheet; and coiling at low temperatures for controlling the amount of scale generation. De-scaling is perfectly accomplished after the hot rolling, and the hot rolled sheet is annealed in a non-annealing atmosphere, thereby to control the oxidation and the nitriding to a minimum during annealing the hot rolled sheet, and the annealing conditions of the hot rolled sheet are specified for proper coarsening of the cohesion, taking into consideration the magnetic properties and the economics.
摘要翻译： PCT No.PCT / JP89 / 00439 Sec。 371日期1990年6月13日 102（e）日期1990年6月13日PCT 1989年4月26日PCT公布。 WO90 / 12896 PCT出版物 日本1990年11月1日。一种制造具有优异磁性的无取向电工钢板的方法，其包括在低温下对钢进行热轧，从而使板坯冷却时AlN颗粒的再溶解最小化 在热轧板退火期间，AlN颗粒的粗化变得容易; 并在低温下卷取以控制氧化皮的产生量。 在热轧后完全脱模，热轧板在非退火气氛中进行退火，从而在热轧板退火时控制氧化和氮化至最小，热轧退火条件 考虑到磁性和经济性，轧制板被规定为适当的内聚力粗化。
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公开(公告)号：US5074930A
公开(公告)日：1991-12-24
申请号：US477840
申请日：1990-04-06
CPC分类号： C21D8/1261 , C21D8/1205 , C21D8/1222
摘要： This invention is to save the energy by heating a slab at high temperature for producing non-oriented electrical steel sheets having excellent magnetic properties uniform over the full length thereof, without carrying out a long soaking, for which a continuously cast slab having a specified chemical composition is heated at a high temperature, and a heat cycle is then defined such that the slab is passed twice nearly around precipitation noses, thereby to coarse the AIN precipitates over the full length of the slab, and the slab is annealed under a specified condition after the hot rolling so that AlN is coarsened and the ferrite grains recrystallize and grow.
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5.发明授权
公开(公告)号：US5009726A
公开(公告)日：1991-04-23
申请号：US427128
申请日：1989-10-12
CPC分类号： C21D8/1222 , C21D8/1261
摘要： The present invention is to produce non-oriented silicon steel sheets having excellent magnetic properties in dependence upon a hot direct rolling, wherein the slab is directly sent to the direct rolling without maintaining the heat and soaking, whereby others than AlN precipitated during hot rolling check the precipitation of AlN, and a delay time is taken between the roughing and the finish rolling so that precipitating nuclei of AlN are introduced into the steel, and uniform and coarse AlN precipitation is formed by a subsequent annealing treatment, thereby to enable to provide uniform and satisfied ferrite grain growth at the recrystallization annealing.
摘要翻译： PCT No.PCT / JP89 / 00232 Sec。 371日期：1989年10月12日 102（e）日期1989年10月12日PCT 1989年3月3日PCT公布。 出版物WO89 / 08151 日本1989年9月8日。本发明是根据热直接轧制制造具有优异磁性的无取向硅钢板，其中将板坯直接送入直接轧制而不保持热和浸泡，其他 在热轧过程中AlN析出后，检测出AlN的沉淀，粗加工与精轧之间延迟时间延长，使AlN的析出核导入钢中，通过后续退火处理形成均匀且粗大的AlN析出 从而能够在再结晶退火时提供均匀且满足的铁素体晶粒生长。
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公开(公告)号：US5169457A
公开(公告)日：1992-12-08
申请号：US432740
申请日：1989-10-17
CPC分类号： C21D8/1222 , C21D8/1261
摘要： A steel slab containing not more than 0.005 wt % carbon, 1.0 to 4.0 wt % silicon, 0.1 to 1.0 wt % manganese, not more than 0.1 wt % phosphorus, not more than 0.005 wt % sulfur, and 0.1 to 2.0 wt % aluminum is directly sent to a hot rolling step without brief soaking, whereby Al and N are made soluble with respect to species other than AlN inevitably precipitated during hot rolling, and uniform and coarse AlN precipitation is formed by a subsequent annealing treatment in which the hot rolled plate is soaked at a temperature of 800.degree. to 1000.degree. C. for a period of time t defined as exp (-0.018T+19.4) .ltoreq.t.ltoreq.exp (-0.022T+25.4) wherein T is the soaking temperature (.degree.C.) and t is the soaking time (minutes). Uniform and satisfactory ferrite grain growth at the recrystallization annealing is provided thereby.
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7.发明授权Method of making non-oriented electrical steel sheets having excellent magnetic properties 失效制造具有优异磁性的非定向电工钢板的制造方法
公开(公告)号：US5116436A
公开(公告)日：1992-05-26
申请号：US476508
申请日：1990-06-13
CPC分类号： C21D8/1222
摘要： Non-oriented electrical steel sheets having excellent magnetic properties are produced by carrying out a coiling at a low temperature for monitoring the amount of scale generation; de-scaling after hot rolling; and annealing the de-scaled hot rolled sheet in a non-oxidizing atmosphere to thereby minimize the oxidation and nitriding during annealing the hot rolled sheet. By determining a higher heating temperature for hot rolling, a magnetic property (magnetic flux density) is improved, and the hot rolled sheet is subjected to an open coil-annealing and annealing conditions therefor are specified in order to perfectly precipitate re-solute AlN particles by this heating and fully coarsen AlN particles.
摘要翻译： PCT No.PCT / JP89 / 00440 Sec。 371日期1990年6月13日 102（e）日期1990年6月13日PCT 1989年4月26日PCT公布。 WO90 / 12897 PCT出版物 1990年11月1日。通过在低温下进行卷取来制造具有优异磁性的非取向电工钢板，用于监测规模生成量; 热轧后去垢; 并在非氧化性气氛中退火脱鳞热轧板，从而使热轧板退火时的氧化和氮化最小化。 通过确定用于热轧的较高的加热温度，提高了磁性（磁通密度），并且对热轧板进行开放的线圈退火和规定退火条件以便完全沉淀再溶质AlN颗粒 通过这种加热和完全粗化的AlN颗粒。
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公开(公告)号：US5061321A
公开(公告)日：1991-10-29
申请号：US425179
申请日：1989-10-12
CPC分类号： C23G1/08
摘要： The present invention provides a pickling method for electrical steel bands having excellent surface properties without requiring any especial treatment and increasing costs, where the pickling conditions of the hot rolled steel band are optimized not only in view of de-scaling properties but also interglanular corrosions, and the pickling is performed with hydrochloric acid for a period of a specified time determined by Si content of steel, temperature and HCl concentration of a pickling liquid.
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公开(公告)号：US06440584B1
公开(公告)日：2002-08-27
申请号：US09953788
申请日：2001-09-17
申请人： Yasunobu Nagataki , Toshiaki Urabe , Fusato Kitano , Akio Kobayashi , Kunikazu Tomita , Shunsaku Node , Kozo Harada , Shogo Sato , Toru Inazumi
发明人： Yasunobu Nagataki , Toshiaki Urabe , Fusato Kitano , Akio Kobayashi , Kunikazu Tomita , Shunsaku Node , Kozo Harada , Shogo Sato , Toru Inazumi
IPC分类号： B32B1518
CPC分类号： C21D8/0263 , C21D8/0278 , C21D9/56 , C21D2211/005 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/24 , C22C38/38 , C23C2/02 , C23C2/40 , Y10S428/939 , Y10T428/12799
摘要： A hot-dip galvanized steel sheet is produced by rough rolling a steel, finish rolling the rough rolled steel at a temperature of Ar3 point or more, coiling the finish rolled steel at a temperature of 700° C. or less, and hot-dip galvanizing the coiled steel at a pre-plating heating temperature of Ac1 to Ac3. A continuous hot-dip galvanizing operation is performed by soaking a pickled strip at a temperature of 750 to 850° C., cooling the soaked strip to a temperature range of 600° C. or less at a cooling rate of 1 to 50° C. per second, hot-dip galvanizing the cooled strip, and cooling the galvanized strip so that the residence time at 400 to 600° C. is within 200 seconds. The steel sheet has a structure consisting essentially of ferrite and martensite.
摘要翻译： 热轧镀锌钢板通过粗轧制造，在Ar3点以上的温度下对粗轧制品进行精轧，在700℃以下的温度下卷取精轧辊，热浸镀锌钢板 以预镀层加热温度Ac1〜Ac3镀锌钢卷。 通过在750〜850℃的温度下浸渍酸洗条，进行连续热浸镀锌作业，将浸渍后的钢带以1〜50℃的冷却速度冷却至600℃以下的温度范围 每秒，对冷却的条进行热浸镀锌，并冷却镀锌带，使得在400至600℃的停留时间在200秒内。 钢板具有由铁素体和马氏体组成的结构。
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公开(公告)号：US5116435A
公开(公告)日：1992-05-26
申请号：US330926
申请日：1989-03-27
CPC分类号： C22C38/02 , C21D8/1222 , C22C38/06
摘要： A method for producing a non-oriented electrical steel sheet with precise thickness and homogeneous magnetic property comprising the steps of: making a steel ingot which has: 0.01 wt. % or less C, 0.003 wt. % or less N, 0.01 to 1.0 wt. % Mn, Al and Si satisfying, in wt. %, the formulas of: ##EQU1## provided that (Si %) represents the Si (wt. %) and (Al %) represents Al content (wt. %), and the balance being Fe and inevitable impurities to produce a steel slab; hot-rolling the slab at a finishing temperature of 700.degree. to 900.degree. C. into a steel strip and coiling the hot rolled strip; and cold-rolling the hot-rolled strip into a cold-rolled strip, followed by annealing the cold-rolled strip.
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