-
1.发明授权
公开(公告)号：EP2025767B1
公开(公告)日：2012-05-16
申请号：EP07744360.4
申请日：2007-05-23
CPC分类号： C21D8/12 , C21D8/1255 , C21D8/1261 , C21D9/46 , C23C8/26 , H01F1/14775 , H01F1/14791 , H01F1/16
摘要： A process for producing a grain-oriented magnetic steel sheet in which slab heating is conducted at a temperature of 1,350°C or lower and the annealing of a hot-rolled sheet is conducted: (a) in a step in which the hot-rolled sheet is heated to a given temperature of 1,000-1,150°C to cause recrystallization and then annealed at a temperature of 850-1,100°C lower than that temperature or (b) by decarburizing the hot-rolled sheet during annealing so that the difference in carbon content between the steel sheet before the annealing and that after the annealing is 0.002-0.02 mass% and the heating in the decarburization/annealing is conducted under such conditions that the heating rate during the period when the temperature of the steel sheet is in the range of 550-720°C is 40 °C/sec or higher, preferably 75-125 °C/sec. Induction heating is used for the rapid heating in the heating step in the decarburization/annealing.
-
2.发明公开
公开(公告)号：EP2025767A1
公开(公告)日：2009-02-18
申请号：EP07744360.4
申请日：2007-05-23
CPC分类号： C21D8/12 , C21D8/1255 , C21D8/1261 , C21D9/46 , C23C8/26 , H01F1/14775 , H01F1/14791 , H01F1/16
摘要： In a production of grain-oriented electrical steel sheet that is heated at a temperature of not higher than 1350°C, (a) the hot-rolled sheet is heated to a prescribed temperature of 1000°C to 1150°C, and after recrystallization is annealed for a required time at a lower temperature of 850°C to 1100°C, or (b) in the hot-rolled sheet annealing process decarburization is conducted to adjust the difference in the amount of carbon before and after decarburization to 0.002 to 0.02 mass%. In the temperature elevation process used in the decarburization annealing of the steel sheet, heating is conducted in the temperature range of 550°C to 720°C at a heating rate of at least 40°C/s, preferably 75 to 125°C/s, utilizing induction heating for the rapid heating used in the temperature elevation process in decarburization annealing.
摘要翻译： 在生产晶粒取向电磁钢板的根本是在不高于1350℃更高的温度下加热，（a）所述热轧板加热至1000℃〜1150℃的预定温度，并再结晶后 在850℃的较低温度下退火的所需时间至1100℃，或（b）在热轧板退火过程脱碳传导脱碳之前和之后以调整碳的量的差至0.002〜 12:02质量％。 在钢板的脱碳退火中使用的升温过程中，加热的温度范围内的550℃在至少40℃/秒的加热速率，优选为75〜传导至720℃125℃/ š利用感应加热对在脱碳退火的升温过程中使用的快速加热。
-
3.发明公开PROCESS FOR PRODUCING GRAIN-ORIENTED MAGNETIC STEEL SHEET WITH EXCELLENT MAGNETIC PROPERTY 有权VERFAHREN ZUR HERSTELLUNG VON KORNORIENTIERTEM ELEKTROBLECH MIT HERVORRAGENDER MAGNETEIGENS AKTI
公开(公告)号：EP1992708A1
公开(公告)日：2008-11-19
申请号：EP07707048.0
申请日：2007-01-12
CPC分类号： C23C8/02 , B21B3/02 , C21D8/12 , C21D8/1261 , C21D8/1272 , C21D9/46 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/20 , C23C8/26 , C23C8/80 , H01F1/14775
摘要： The invention provides a method of producing a grain-oriented electrical steel sheet of the complete solid solution nitrided type that is good in glass film formation and excellent in magnetic properties, which method comprises: C: 0.025 to 0.09%, hot-rolling the steel slab containing Si: 2.5 to 4.0% and acid-soluble Al into a hot-rolled steel strip; controlling the rate at which N contained in the hot-rolled steel strip is precipitated as AlN to a precipitation rate of 20% or less; conducting hot-rolled strip annealing and cold rolling conducting decarburization-annealing combined with primary recrystallization by during the former part of the process in an atmosphere whose PH 2 O/ PH 2 is 0.30 to 0.70 and then during the latter part thereof in an atmosphere whose PH 2 O/PH 2 is 0.20 or less, thereby making the circular equivalent average grain diameter of the primary recrystallization grains 7 µm to less than 18 µm; nitriding the strip as it travels in a mixed gas of hydrogen, nitrogen and ammonia; controlling the steel strip oxygen concentration before secondary recrystallization annealing calculated based on strip thickness of 0.30 mm (oxygen content: So) to 450 ppm to 700 ppm inclusive; applying a coat of annealing separator; and then conducting secondary recrystallization annealing in an atmosphere that, while the temperature at the hottest coil outer periphery point is between room temperature and 950 °C, is controlled to a nitrogen atmosphere containing oxygen: 25 to 75% wherein the balance is hydrogen and PH 2 O/ PH 2 is 0.01 to 0.15.
摘要翻译： 本发明提供一种制备完全固溶氮化型的方向性电磁钢板的方法，该方法具有良好的玻璃成膜性和优良的磁特性，该方法包括：C：0.025〜0.09％，热轧钢 含有Si：2.5〜4.0％的板坯和酸溶性Al成为热轧钢带; 控制热轧钢带中含有的N的AlN析出速度为20％以下的析出速度; 在前一部分工艺中，在PH 2 O / PH 2为0.30〜0.70的气氛中进行热轧带退火和冷轧导电脱碳退火与一次再结晶组合，然后在其后半部分的气氛 PH 2 O / PH 2为0.20以下，使一次再结晶粒子的圆周当量平均粒径为7μm〜18μm， 当条带在氢，氮和氨的混合气体中流动时氮化; 基于条带厚度0.30mm（氧含量：So）计算出的二次再结晶退火前的钢带氧浓度为450ppm〜700ppm， 涂一层退火分离器; 然后在最热线圈外周点的温度在室温〜950℃之间的气氛中进行二次再结晶退火，控制在含氧的氮气氛中：25〜75％，其中余量为氢气和PH 2 O / PH 2为0.01〜0.15。
-
公开(公告)号：EP3812478A1
公开(公告)日：2021-04-28
申请号：EP19822585.6
申请日：2019-06-21
发明人： KUMANO, Tomoji , YANO, Shinya , OKADA, Shingo , OGURI, Akio , MORIMOTO, Shota
摘要： Provided is a grain-oriented electrical steel sheet, the core loss characteristics of which have been significantly improved without causing a deterioration in magnetic flux density. The grain-oriented electrical steel sheet: comprises 2.5-3.5% by mass of Si with the balance being Fe and inevitable impurities; has a sheet thickness of 0.18-0.35 mm; has a metallographic structure including matrix grains of Goss-oriented secondary recrystallized grains after secondary-recrystallized annealing, wherein Goss-oriented crystal grains existing in the matrix and having a major (long) diameter of 5 mm or smaller exist in the metallographic structure at a frequency of 1.5 grains/cm 2 to 8 grains/cm 2 ; and has a magnetic flux density B8 of 1.88T or greater. As for the orientations of the Goss-oriented crystal grains having a major (long) diameter of 5 mm or smaller, the orientation of the Goss-oriented crystal grains deviate from the rolling direction by an angle of 7 degrees or smaller and by an angle of 5 degrees or smaller in terms of a simple average of an α angle and that of a β angle, respectively.
α angle; the angle formed by the longitudinal direction and the projection of the [001] on specimen surface, and
β angle; the tilt of the [001] out of the specimen surface-
公开(公告)号：EP2330223B1
公开(公告)日：2020-11-04
申请号：EP09813067.7
申请日：2009-09-08
-
公开(公告)号：EP2418294B1
公开(公告)日：2019-12-25
申请号：EP10761635.1
申请日：2010-03-31
-
7.发明公开METHOD FOR TREATING STEEL FOR DIRECTIONAL ELECTROMAGNETIC STEEL PLATE AND METHOD FOR PRODUCING DIRECTIONAL ELECTROMAGNETIC STEEL PLATE 审中-公开钢材加工为ALIGNED电磁钢板ALIGNED电磁钢板和方法方法
公开(公告)号：EP2418294A1
公开(公告)日：2012-02-15
申请号：EP10761635.1
申请日：2010-03-31
摘要： A surface temperature of a slab is decreased down to 600 °C or lower between start of continuous casting (step S2) and start of slab reheating (step S3). The surface temperature of the slab is held at 150 °C or higher between the start of the continuous casting (step s2) and the start of the slab reheating (step S3) . The surface temperature of the slab in the slab reheating (step S3) is set to not lower than 1080 °C and not higher than 1200 °C.
摘要翻译： 板坯的表面温度降低到600℃或连续铸造（步骤S2）的开始之间的较低和板坯再加热（步骤S3）的启动。 板坯的表面温度在150℃保持或连续铸造（步骤S2）的开始到板坯再加热（步骤S3）的开始之间更高。 在板坯再加热（步骤S3）的板坯的表面温度被设定为不大于1080℃以下并且不高于1200℃更高
-
8.发明公开DIRECTIONAL ELECTROMAGNETIC STEEL PLATE MANUFACTURING METHOD 审中-公开VERFAHREN ZUR HERSTELLUNG EINER GERICHTETEN ELEKTROMAGNETISCHEN STAHLPLATTE
公开(公告)号：EP2330223A1
公开(公告)日：2011-06-08
申请号：EP09813067.7
申请日：2009-09-08
摘要： A slab with a predetermined composition is heated at 1280°C to 1390°C to make a substance functioning as an inhibitor to be solid-solved (step S1). Next, the slab is hot-rolled to obtain a steel strip (step S2). The steel strip is annealed to form a primary inhibitor in the steel strip (step S3). Next, the steel strip is cold-rolled once or more (step S4). Next, the steel strip is annealed to perform decarburization and to cause primary recrystallization (step S5). Next, nitriding treatment is performed on the steel strip in a mixed gas of hydrogen, nitrogen and ammonia under a state where the steel strip runs, to form a secondary inhibitor in the steel strip (step S6). Next, the steel strip is annealed to induce secondary recrystallization (step S7).
摘要翻译： 将具有预定组成的板坯在1280℃加热至1390℃，以使作为固溶体的抑制剂起作用的物质（步骤S1）。 接下来，对板坯进行热轧以获得钢带（步骤S2）。 钢带退火以在钢带中形成初级抑制剂（步骤S3）。 接着，将钢带冷轧一次以上（步骤S4）。 接着，退火钢带进行脱碳，进行一次再结晶（步骤S5）。 接下来，在钢带运行的状态下，在氢，氮和氨的混合气体中对钢带进行氮化处理，在钢带中形成二次抑制剂（步骤S6）。 接下来，对钢带进行退火以引起二次再结晶（步骤S7）。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.016 秒)
