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    • 5. 发明授权
    • Process for producing non-oriented electromagnetic steel strip capable
of retaining uniform magnetic quality in a product coil
    • 用于制造能够在产品线圈中保持均匀磁性质的无取向电磁钢带的方法
    • US5639315A
    • 1997-06-17
    • US573277
    • 1995-12-15
    • Minoru TakashimaKeiji SatoTakashi Obara
    • Minoru TakashimaKeiji SatoTakashi Obara
    • B21B3/02B21B15/00C21D8/12C22C38/00C22C38/06H01F1/16H01F1/14
    • C21D8/1222B21B15/0085B21B2275/04B21B3/02
    • A process is disclosed for the production of a non-oriented electromagnetic steel strip having its magnetic characteristics uniformly retained in the product coil. The process involves by full- or semi-processing, hot rolling a steel slab containing not more than about 0.03% by weight of C, not more than about 3% by weight of Si and not more than about 2% by weight of Al such that the equation [Si wt %]+3 [Al wt %]-6 [C wt %] is in the range of about 0 to 2; and cold rolling the hot rolled steel strip in a known manner, followed optionally by finish annealing and also optionally by skin-pass rolling. The coil is finish rolled at a peripheral roll speed between about 500 to 1,500 mpm at the final stand. The peripheral roll speed at the final finish rolling stand is also controlled within a range of no more than about 300 mpm. Hot rolling is completed at a temperature Tf (.degree. C.) in an alpha-phase temperature zone and not less than about {750+30 ([Si wt %]+3 [Al wt %]-6 [C wt %])}.
    • 公开了一种制造其磁性特性均匀地保留在产品线圈中的无取向电磁钢带的方法。 该方法包括通过全部或半加工,热轧含有不超过约0.03重量%的C,不超过约3重量%的Si和不超过约2重量%的Al的钢坯, [Si wt%] + 3 [Al wt%] -6 [C wt%]的方程式在约0至2的范围内; 并以已知的方式冷轧热轧钢带,然后任选地通过精加工退火,也可任选地通过表面光轧。 线圈在最终支架处以约500至1,500mpm的周边辊速度精轧。 最终精轧站的周边轧辊速度也控制在不超过约300mpm的范围内。 热轧在α相温度区域的温度Tf(℃)下完成,不低于约{750 + 30([Si重量%] + 3 [Al%重量] -6 [C%重量%]) }。
    • 6. 发明授权
    • Method for making non-oriented magnetic steel sheet
    • 无取向磁钢板的制造方法
    • US5637157A
    • 1997-06-10
    • US533842
    • 1995-09-26
    • Minoru TakashimaAtsushi OginoKeiji Sato
    • Minoru TakashimaAtsushi OginoKeiji Sato
    • B21B3/02B21C47/26C21D8/12C21D9/68C22C38/00H01F1/14
    • C21D8/1222C21D8/1233C21D8/125C21D9/68
    • This invention is directed to a method of producing a non-oriented magnetic steel sheet involving a series of processes including performing hot rolling process on a steel slab containing no more than about 0.01 wt % C, no more than about 4.0 wt % Si, no more than about 1.5 wt % Mn, no more than about 1.5 wt % Al, no more than about 0.2 wt % P, and no more than about 0.01 wt % S, performing thereto at least one cold rolling process including an optional intermediate annealing process, and then performing a finishing annealing process. The hot rolling process further includes a step which reduces thermal irregularity formed during slab heating; this step involves maintaining a sheet bar, obtained by rough-rolling of the steel slab, at a temperature ranging from about 850.degree. to 150.degree. C. The hot rolling process also includes a step which promotes the growth of fine precipitated particles by applying strain to the sheet bar. Magnetic steel sheet thusly obtained possess uniform magnetic properties and thickness in the coil.
    • 本发明涉及一种制造无取向电磁钢板的方法,涉及一系列方法,包括在钢坯上进行热轧工艺,该钢板含有不超过约0.01重量%的C,不超过约4.0重量%的Si,不 大于约1.5重量%的Mn,不超过约1.5重量%的Al,不超过约0.2重量%的P和不超过约0.01重量%的S,进行至少一个包括任选的中间退火工艺的冷轧工艺 ,然后进行精加工退火处理。 热轧方法还包括减少板坯加热期间形成的热不均匀性的步骤; 该步骤包括在约850℃至150℃的温度范围内保持通过钢坯粗轧获得的板坯。热轧过程还包括通过施加应变来促进细小沉淀颗粒的生长的步骤 到纸张栏。 由此获得的磁钢板在线圈中具有均匀的磁性能和厚度。