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    • 11. 发明授权
    • Polishing apparatus
    • 抛光设备
    • US07115026B2
    • 2006-10-03
    • US11201307
    • 2005-08-11
    • Makoto NakajimaYoshio NakamuraTadakazu Miyashita
    • Makoto NakajimaYoshio NakamuraTadakazu Miyashita
    • B24B7/22
    • B24B37/08B24B41/007
    • An upper polishing plate is moved downward until facing a lower polishing plate to polish a work piece. The upper polishing plate is rotated in a horizontal plane together with a first elastic member, a second elastic member, an outer member and a connecting member. A pressure difference between a first pressing force pressing the outer member or an inner member upward and a second pressing force pressing the outer member or the inner member downward, which is produced in a first closed space by supplying a compressed fluid into and discharging the same from the first closed space, is adjusted, so that a third pressing force of the upper polishing plate, which presses a work piece, can be adjusted.
    • 上抛光板向下移动直到面向下抛光板以抛光工件。 上部抛光板与第一弹性构件,第二弹性构件,外部构件和连接构件一起在水平面中旋转。 通过将压缩流体供给到其中并在其中排出而在第一封闭空间中产生的压缩外部构件或内部构件向上的第一按压力与第二按压力之间的压力差 从第一封闭空间被调节,从而能够调节按压工件的上部抛光板的第三按压力。
    • 14. 发明授权
    • Polishing machine
    • 抛光机
    • US06290585B1
    • 2001-09-18
    • US09510760
    • 2000-02-22
    • Yoshio Nakamura
    • Yoshio Nakamura
    • B24B500
    • B24B37/11B24B41/007B24B41/04
    • The polishing machine is capable of preventing fine vibrations of a polishing face of a polishing plate. In the polishing machine, a plate holder is rotatably provided to a base. The polishing plate is mounted on the plate holder, and an upper face of the polishing plate is covered with a polishing cloth as the polishing face. A press unit presses a surface of a work piece onto the polishing face of the polishing plate so as to polish the surface of the work piece like a mirror face. A fluid bearing rotatably supports the plate holder by fluid pressure, at a position between the plate holder and the base, so as to keep the polishing face of the polishing plate flat.
    • 抛光机能够防止抛光板的抛光面的微细振动。 在抛光机中,板保持器可旋转地设置在基座上。 抛光板安装在板支架上,抛光板的上表面被抛光布覆盖作为抛光面。 按压单元将工件的表面按压到抛光板的抛光面上,以像镜面一样抛光工件的表面。 流体轴承通过流体压力在板保持器和基座之间的位置处可旋转地支撑板保持器,以保持抛光板的抛光面平坦。
    • 18. 发明授权
    • Process for production of grain oriented electrical steel sheet having
excellent magnetic properties
    • 具有优良磁特性的晶粒取向电工钢板的制造方法
    • US5512110A
    • 1996-04-30
    • US466866
    • 1995-06-06
    • Yasunari YoshitomiKatsuro KurokiYukio MatsuoHiroaki MasuiYoshio NakamuraMaremizu IshibashiTsuyoshi KawanoTsutomu HarataniYoshiyuki Ushigami
    • Yasunari YoshitomiKatsuro KurokiYukio MatsuoHiroaki MasuiYoshio NakamuraMaremizu IshibashiTsuyoshi KawanoTsutomu HarataniYoshiyuki Ushigami
    • C21D8/12C22C38/02H01F1/18
    • C22C38/02C21D8/1255C21D8/1272C21D8/1233C21D8/1283
    • In the present invention, grain oriented electrical steel sheets provided by heating a slab comprising, by weight percent, 0.025 to 0.075% of C, 3.4 to 5.0% of Si, 0.015 to 0.080% of sol. Al, 0.0030 to 0.013% of N, 0.014% or less of (S+0.405 Se) and 0.05 to 0.8% of Mn, sol. Al (%)/Si (%) being 0.0080 or more, the balance consisting of Fe and unavoidable impurities at a temperature below 1280.degree. C., hot-rolling the heated slab, subjecting the hot-rolled steel sheet to cold rolling, subjecting the cold-rolled steel sheet to decarbonization annealing with regulating the average diameter of primary recrystallized grains of the steel sheet subjected to decarbonization annealing to 18 to 35 .mu.m in a period between the completion of the decarbonization annealing and the initiation of final annealing, coating the decarburized steel with an annealing separator and subjecting the coated steel sheet to final annealing, wherein the final annealing is effected in such a manner that the partial pressure of nitrogen, P .sub.N2 (%), in the annealing atmosphere is 12.5% or more in a steel sheet temperature range of from 900.degree. C. to 1150.degree. C. in the heating stage of the final annealing, and subjecting the steel sheet to nitriding to cause the steel sheet to absorb 0.0010% by weight or more of nitrogen in a period between the completion of the hot rolling and the initiation of secondary recystallization in the final annealing.
    • 在本发明中,通过加热板坯而提供的晶粒取向电工钢板,其包含重量百分比为0.025〜0.075%的C,3.4〜5.0%的Si,0.015〜0.080%的溶胶。 Al,0.0030〜0.013%N,0.014%以下(S + 0.405 Se)和0.05〜0.8%Mn,sol。 Al(%)/ Si(%)为0.0080以上,余量由温度低于1280℃的Fe和不可避免的杂质组成,热轧加热板坯,对热轧钢板进行冷轧, 冷轧钢板进行脱碳退火,将脱碳退火钢板的一次再结晶晶粒的平均直径调整为18〜35μm,在完成脱碳退火和开始最终退火,涂布 所述脱碳钢与退火分离剂一起进行最终退火,其中最终退火以使退火气氛中的氮分压P N2(%)为12.5%以上的方式进行, 在最终退火的加热阶段的钢板温度范围为900〜1150℃,对钢板进行氮化处理,使钢板吸收0.0010% 在最终退火之间的热轧完成和二次再结晶开始之间的时间内的氮气重量或更多。