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1. 发明授权

EP1056890B1 VERFAHREN ZUR HERSTELLUNG VON NICHTKORNORIENTIERTEM ELEKTROBLECH 有权
标题翻译：用于生产无取向电工钢板
公开(公告)号：EP1056890B1
公开(公告)日：2001-08-29
申请号：EP99910250.2
申请日：1999-02-20
申请人： Thyssen Krupp Stahl AG
发明人： PIRCHER, Hans , KAWALLA, Rudolf , ESPENHAHN, Manfred , HAMMER, Brigitte , PETERS, Klaus , SCHNEIDER, Jürgen , WUPPERMANN, Carl-Dieter
IPC分类号： C21D8/12
CPC分类号： C21D8/1222 , B21B2201/04 , B21B2201/16 , C21D8/1211 , C21D8/1233 , C22C38/02 , C22C38/04
摘要： The invention relates to a method for producing non-grain oriented electro sheet steel out of continuously cast slabs or thin slabs with low magnetic loss, high polarisation and good mechanical properties. The invention is characterized in that the steel slabs are hot-rolled directly after casting or after reheating to a temperature ≥900 °C and in that during finishing rolling two or more deformation passes are carried out in the austenite/ferrite two-phase region.

2. 发明授权

EP0910676B1 VERFAHREN ZUR HERSTELLUNG VON KORNORIENTIERTEM ELEKTROBLECH 失效
标题翻译：用于生产晶粒取向电工钢板
公开(公告)号：EP0910676B1
公开(公告)日：2001-01-10
申请号：EP97930498.7
申请日：1997-07-03
申请人： Thyssen Krupp Stahl AG
发明人： ESPENHAHN, Manfred , BÖTTCHER, Andreas , GÜNTHER, Klaus
IPC分类号： C21D8/12 , C22C38/02
CPC分类号： C21D8/1272 , C21D1/76 , C21D8/1222 , C21D8/1233 , C21D8/1261
摘要： The invention relates to a process for producing a grain-orientated electrical steel sheet in which a steel slab is soaked at a temperature which is lower than the solubility temperature for manganese sulphide but above the solubility temperature for copper sulphide. The slab is subsequently hot-rolled at a starting temperature of at least 960 °C and at an end temperature in the range of 880 to 1000 °C to provide a hot-strip final thickness in the range of 1.5 to 7.0 mm. The hot strip is subsequently annealed at a temperature in the range of 880 to 1150 °C and cooled at a rate of above 15 K/s. The hot strip is cold rolled in one or a plurality of cold rolling stages. There follows recrystallisating annealing with simultaneous decarburisation, application of a separating agent, high temperature annealing and, after application of an insulating layer, final annealing. The invention is characterised in that the cold strip for high-temperature annealing is heated in an atmosphere containing less than 25 vol. % of H2, the remainder being nitrogen and /or a noble gas, at least until the critical temperature is obtained.

3. 发明授权

EP0998587B1 VERFAHREN ZUR HERSTELLUNG VON KORNORIENTIERTEM ELEKTROBLECH 有权
公开(公告)号：EP0998587B1
公开(公告)日：2001-02-28
申请号：EP98945171.1
申请日：1998-08-06
申请人： Thyssen Krupp Stahl AG
发明人： ESPENHAHN, Manfred , GÜNTHER, Klaus , BÖTTCHER, Andreas
IPC分类号： C21D8/12
CPC分类号： C21D8/1222 , C21D3/04 , C21D8/1205 , C21D8/1261
摘要： The invention relates to a method for producing grain oriented electric sheets. In this method, a steel slab is first of all heated to a temperature below the solubility temperature of manganese sulphide but above the solubility temperature of copper sulphide, then heated through and finally hot-rolled at an initial temperature of at least 960 DEG C and a final temperature of 880-1000 DEG C, until a final thickness of the hot-rolled sheet of 1.5-7.0nm is obtained. The hot-rolled sheet is then annealed for 100-600s at a temperature of 880-1150 DEG C, cooled and cold-rolled. The cold-rolled band is annealed, during which decarbonization and recrystallization take place. After applying an MgO-containing separating agent, the cold-rolled band is annealed at high temperature, and, after applying an insulating coating, subjected to final annealing. The invention is characterized in that a steel slab with fine grain globulite structure is used, in which at least 90 % of the grains have a diameter of not more than 1/25 of the slab thickness, and an extension factor of at least 0.5.
摘要翻译：本发明涉及一种生产晶粒取向电薄片的方法。在该方法中，首先将钢坯加热至低于硫化锰的溶解温度但高于硫化铜的溶解温度的温度，然后加热并且最后在至少960℃的初始温度下进行热轧，以及最终温度为880-1000℃，直到获得1.5-7.0nm的热轧板的最终厚度。然后将热轧板在880-1150℃的温度下退火100-600秒，冷却并冷轧。冷轧带退火，在此期间发生脱碳和再结晶。在施加含MgO的分离剂后，将该冷轧带在高温下退火，并且在施加绝缘涂层后，进行最终退火。本发明的特征在于使用具有细晶粒球状体结构的钢坯，其中至少90％的晶粒具有不超过板坯厚度1/25的直径和至少0.5的拉伸因数。

4. 发明公开

EP1025268A1 VERFAHREN ZUR HERSTELLUNG VON KORNORIENTIERTEM ELEKTROBLECH MIT GERINGEM UMMAGNETISIERUNGSVERLUST UND HOHER POLARISATION 有权
标题翻译：用于生产晶粒取向高，低偏振铁心损耗电SHEET
公开(公告)号：EP1025268A1
公开(公告)日：2000-08-09
申请号：EP98945320.4
申请日：1998-09-09
申请人： Thyssen Krupp Stahl AG
发明人： PIRCHER, Hans , KAWALLA, Rudolf , ESPENHAHN, Manfred , BÖTTCHER, Andreas , GÜNTHER, Klaus , HUNEUS, Hans , WUPPERMANN, Carl-Dieter
IPC分类号： C21D8/12
CPC分类号： C21D8/1205 , C21D8/1211 , C21D8/1233 , C21D8/1261 , C21D8/1272
摘要： The invention concerns a method for producing a magnetic grain oriented steel sheet by smelting silicon steel and casting said molten steel continuously to form a strip 25-100 mm thick. During the solidification process said strip is cooled to a temperature higher than 700 °C and divided into thin slabs. Said thin slabs are then brought into a re-heating furnace mounted in line and are then re-heated to a temperature ≤1170 °C and rolled continuously in a hot rolling mill with several rolling stands, to form a hot strip ≤3.0 mm thick. The first forming run is then carried out when the rolled product internal temperature is at most 1150 °C. The reduction in thickness is at least 20 %. The hot strip is cold rolled, in one or several steps, with intermediate recrystallisation annealing so as to have a final thickness ranging between 0.15 and 0.50 mm. The cold strip is then subjected to recrystallisation and decarbonization annealing, provided with an annealing separator containing mainly MgO, then subjected to a final anneal for improving the grain oriented texture. Finally the strip is coated with an electrical insulation and subjected to an anneal for relieving stresses.

5. 发明授权

EP0970256B1 WARMWALZEN VON STAHLBAND 失效
标题翻译：带钢热连轧
公开(公告)号：EP0970256B1
公开(公告)日：2001-02-07
申请号：EP98912456.5
申请日：1998-03-07
申请人： Thyssen Krupp Stahl AG
发明人： PIRCHER, Hans , ESPENHAHN, Manfred , KAWALLA, Rudolf , WOLPERT, Waldemar
IPC分类号： C21D8/02
CPC分类号： B21B1/26 , B21B1/46 , B21B2201/02 , B21B2201/04 , B21B2201/16 , C21D8/0226 , C21D8/0231
摘要： The invention relates to a method for producing strips of non-alloy and low-alloy steel with homogeneous structures and properties by continuous hot-rolling, by passing several times in the austenite zone and then in the ferrite zone, as well as by reeling. The invention is characterized in that the steel strip that was continuously cast and/or rough rolled in the austenite zone is rolled by passing twice or more in the austenite zone, at a starting temperature T≥Ar3 +30 °C with a total strain of eh≥30 %. After each pass, the rolled product is intensively cooled until completion of the ferrite conversion. The rolled product is then subjected to final rolling by passing several times through the ferrite zone, with a total strain of en≥60 %, until a final thickness is obtained.

6. 发明公开

EP1056890A1 VERFAHREN ZUR HERSTELLUNG VON NICHTKORNORIENTIERTEM ELEKTROBLECH 有权
标题翻译：用于生产无取向电工钢板
公开(公告)号：EP1056890A1
公开(公告)日：2000-12-06
申请号：EP99910250.2
申请日：1999-02-20
申请人： Thyssen Krupp Stahl AG
发明人： PIRCHER, Hans , KAWALLA, Rudolf , ESPENHAHN, Manfred , HAMMER, Brigitte , PETERS, Klaus , SCHNEIDER, Jürgen , WUPPERMANN, Carl-Dieter
IPC分类号： C21D8/12
CPC分类号： C21D8/1222 , B21B2201/04 , B21B2201/16 , C21D8/1211 , C21D8/1233 , C22C38/02 , C22C38/04
摘要： The invention relates to a method for producing non-grain oriented electro sheet steel out of continuously cast slabs or thin slabs with low magnetic loss, high polarisation and good mechanical properties. The invention is characterized in that the steel slabs are hot-rolled directly after casting or after reheating to a temperature ≥900 °C and in that during finishing rolling two or more deformation passes are carried out in the austenite/ferrite two-phase region.

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