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公开(公告)号：USRE35967E
公开(公告)日：1998-11-24
申请号：US897747
申请日：1997-07-21
CPC分类号： C21D8/1233 , C21D8/1222 , C21D8/1244 , C21D8/1266
摘要： Batch annealed, semi-processed and fully processed motor lamination steels are made by processes which subject a slab having an ultra low carbon composition (less than 0.01%) to at least the following steps: hot rolling with an austenite finishing temperature, coiling at a temperature ranging from 1300.degree.-1450.degree. F., and light temper rolling (less than 1.0% reduction) or leveling; reheating at a temperature less than 2300.degree. F., hot rolling with a ferrite finishing temperature, coiling at a temperature less than 1200.degree. F., and light temper rolling or leveling; or hot rolling with a ferrite finishing temperature, coiling at a temperature ranging from 1100.degree.-1350.degree. F. without a subsequent hot band anneal, and light temper rolling or leveling.
摘要翻译： 批量退火，半加工和完全处理的电动机层压钢通过将具有超低碳组成（小于0.01％）的板坯至少经历以下步骤的方法制成：至少以奥氏体终轧温度进行热轧，在 温度范围为1300°-1450°F，轻度轧制（减少1.0％以下）或流平; 在低于2300°F的温度下进行再加热，在铁素体终轧温度下进行热轧，在低于1200°F的温度下卷取，轻度轧制或平整; 或者在铁素体退火温度下进行热轧，在1100〜-1350°F的温度下进行卷取，不进行随后的热带退火，并进行轻质轧制或调平。
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公开(公告)号：US06284388B1
公开(公告)日：2001-09-04
申请号：US09643925
申请日：2000-08-23
IPC分类号： B32B1504
CPC分类号： C22C38/008 , C21D8/1255 , C21D8/1283 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/60 , C23C8/18 , H01F1/18 , H01F41/0233 , Y10S148/901 , Y10S428/928 , Y10T428/12549 , Y10T428/1259 , Y10T428/12653 , Y10T428/12958 , Y10T428/12965 , Y10T428/12993
摘要： The present invention is directed to a method of forming an electrically insulating layer on a steel article such as a stack of electrical steel laminations or an individual, unstacked electrical steel lamination, comprising exposing the article to an oxidation atmosphere, and to a temperature (such as at least about 800° F.) for a time sufficient to form on the article an electrically insulating layer comprising hematite. The hematite layer is effective to provide the article with a surface resistivity characterized by an F-amp value of not greater than about 0.85 at a test pressure of 50 psi and a transfer surface roughness of about 10 microinches (Ra). Also featured is a steel article having the electrically insulating layer formed thereon.
摘要翻译： 本发明涉及一种在钢制品上形成电绝缘层的方法，所述钢制品例如电钢叠片或单独的未包装的电工钢层压件，包括将制品暴露于氧化气氛和温度（如 至少约800°F）足以在物品上形成包含赤铁矿的电绝缘层的时间。 在50psi的试验压力和约10微英寸（Ra）的转印表面粗糙度下，赤铁矿层有效地为制品提供表征电阻率特征的F-amp值不大于约0.85。 其特征在于其上形成有电绝缘层的钢制品。
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公开(公告)号：US06221501B1
公开(公告)日：2001-04-24
申请号：US09376121
申请日：1999-08-17
IPC分类号： B32B1504
CPC分类号： C22C38/008 , C21D8/1255 , C21D8/1283 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/60 , C23C8/18 , H01F1/18 , H01F41/0233 , Y10S148/901 , Y10S428/928 , Y10T428/12549 , Y10T428/1259 , Y10T428/12653 , Y10T428/12958 , Y10T428/12965 , Y10T428/12993
摘要： The present invention is directed to a method of forming an electrically insulating layer on a steel article such as a stack of electrical steel laminations or an individual, unstacked electrical steel lamination, comprising exposing the article to an oxidation atmosphere, and to a temperature (such as at least about 800° F.) for a time sufficient to form on the article an electrically insulating layer comprising hematite. The hematite layer is effective to provide the article with a surface resistivity characterized by an F-amp value of not greater than about 0.85 at a test pressure of 50 psi and a transfer surface roughness of about 10 micro inches (Ra). Also featured is a steel article having the electrically insulating layer formed thereon.
摘要翻译： 本发明涉及一种在钢制品上形成电绝缘层的方法，所述钢制品例如电钢叠片或单独的未包装的电工钢层压件，包括将制品暴露于氧化气氛和温度（如 至少约800°F）足以在物品上形成包含赤铁矿的电绝缘层的时间。 在50psi的试验压力和约10微英寸（Ra）的转印表面粗糙度下，赤铁矿层有效地为制品提供表征电阻率特征的F-amp值不大于约0.85。 其特征在于其上形成有电绝缘层的钢制品。
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公开(公告)号：US06217673B1
公开(公告)日：2001-04-17
申请号：US08940151
申请日：1997-09-29
IPC分类号： H01F104
CPC分类号： C21D8/1233 , C21D8/1222 , C21D8/1244 , C21D8/1266
摘要： Batch annealed, semi-processed and fully processed motor lamination steels are made by processes which subject a slab having a particular ultra low carbon composition (less than 0.01%) to steps which include hot rolling a slab into a strip and coiling the strip. This is followed by the sequential steps of preferably annealing the strip in coil form, cold rolling the strip and batch annealing the strip in coil form. The strip is flattened by a temper rolling or leveling process. The flattening step reduces the thickness of the strip by an amount ranging from greater than 0% to not greater than 1.0% to provide the strip with a permeability when stress relief annealed of at least 2500 Gauss/Oersted.
摘要翻译： 分批退火，半加工和完全处理的电动机层压钢通过使具有特定超低碳组成（小于0.01％）的板坯与将板坯热轧成条并卷绕带材的步骤制成。 之后是顺序的步骤，优选以线圈形式退火带材，冷轧带材和以线圈形式对带材进行批量退火。 钢带被平整轧制或整平工艺压平。 平坦化步骤将钢带的厚度减小大于0％至不大于1.0％的量，以便在至少2500高斯/奥斯特的应力消除退火时为钢带提供渗透性。
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公开(公告)号：US5609696A
公开(公告)日：1997-03-11
申请号：US502675
申请日：1995-07-14
CPC分类号： C21D8/1233 , C21D8/1222 , C21D8/1244 , C21D8/1266
摘要： Batch annealed, semi-processed and fully processed motor lamination steels are made by processes which subject a slab having an ultra low carbon composition (less than 0.01%) to at least the following steps: hot rolling with an austenite finishing temperature, coiling at a temperature ranging from 1300.degree.-1450.degree. F., and light temper rolling (less than 1.0% reduction) or leveling; reheating at a temperature less than 2300.degree. F., hot rolling with a ferrite finishing temperature, coiling at a temperature less than 1200.degree. F., and light temper rolling or leveling; or hot rolling with a ferrite finishing temperature, coiling at a temperature ranging from 1100.degree.-1350.degree. F. without a subsequent hot band anneal, and light temper rolling or leveling.
摘要翻译： 批量退火，半加工和完全处理的电动机层压钢通过将具有超低碳组成（小于0.01％）的板坯至少经历以下步骤的方法制成：至少以奥氏体终轧温度进行热轧，在 温度范围为1300°-1450°F，轻度轧制（减少1.0％以下）或流平; 在低于2300°F的温度下进行再加热，在铁素体终轧温度下进行热轧，在低于1200°F的温度下卷取，轻度轧制或平整; 或者在铁素体退火温度下进行热轧，在1100〜-1350°F的温度下进行卷取，不进行随后的热带退火，并进行轻质轧制或调平。
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