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    • 77. 发明授权
    • Surface treatment method and composition for zinc coated steel sheet
    • 镀锌钢板的表面处理方法和组成
    • US5318640A
    • 1994-06-07
    • US916096
    • 1992-07-28
    • Hitoshii IshiiKazuhiko MoriToshi MiyawakiShizuo Shima
    • Hitoshii IshiiKazuhiko MoriToshi MiyawakiShizuo Shima
    • C23C22/60C23C22/78C23C18/46
    • C23C22/60C23C22/78
    • A nickel and/or cobalt deposition process which can be run at a nearly neutral pH and which rapidly deposits nickel and/or cobalt in quantities large enough to improve the paint adhesion and post coating corrosion resistance, and which has a good solution stability, is achieved by treating zinc coated sheet steel with an aqueous solution that has a pH between 5 and 10 inclusive and comprises (A) a total of at least 0.01 g/L of metal ions selected from the group consisting of Ni.sup.2+ and Co.sup.2+ ions and (B) a sufficient amount to fully complex the metal ions recited in part (A) of complexing agents selected from the group consisting of ammonia and organic compounds having at least one amino group in the neutral region.The substitution precipitation reaction of nickel and cobalt is substantially accelerated by the presence, as a third component in addition to the metal ion and complexing agent, of at least one ionic species or compound selected from the nitrite ion, nitrate ion, thiocyanate ion, thiosulfate ion, thiourea, phosphite ion, hypophosphite ion, and perchlorate ion.
    • PCT No.PCT / US91 / 00531 Sec。 371日期:1992年7月28日 102(e)日期1992年7月28日PCT 1991年1月25日PCT PCT。 出版物WO91 / 11542 日期:1991年8月8日。镍和/或钴沉积方法,其可以在接近中性的pH下运行,并且以足够大的量快速沉积镍和/或钴以改善涂料粘附性和后涂层耐腐蚀性,以及哪些 具有良好的溶液稳定性,通过用pH为5〜10的水溶液处理镀锌钢板而实现,其包含(A)总计至少0.01g / L的金属离子,所述金属离子选自 Ni2 +和Co2 +离子和(B)足够的量使得在中性区域中具有至少一个氨基的氨和有机化合物中选择的一组络合剂部分(A)中所述的金属离子完全复合。 作为除了金属离子和络合剂之外的至少一种离子种类或选自亚硝酸根离子,硝酸根离子,硫氰酸根离子,硫代硫酸盐的化合物的第三成分,镍和钴的取代沉淀反应基本上加快 离子,硫脲,亚磷酸根离子,次磷酸根离子和高氯酸根离子。
    • 79. 发明授权
    • Flicker compensating apparatus for DC arc furnace
    • 直流电弧炉闪烁补偿装置
    • US5155740A
    • 1992-10-13
    • US789527
    • 1991-11-07
    • Norio AoKazuhiko Mori
    • Norio AoKazuhiko Mori
    • C21C5/52F27B3/28H02J3/18H05B7/144
    • C21C5/5229F27B3/28H02J3/1864H05B7/144Y02E40/12Y02P10/216Y02P10/256Y02P10/259Y02P10/34
    • A flicker compensating apparatus for compensating for flickering due to a variation in the reactive power generated from a DC arc furnace connected by an AC/DC converter to an AC power system, comprises: a current detector for detecting a DC current flowing in the DC arc furnace; a controller for determining the phase control angle of a thyristor included in the AC/DC converter in accordance with the difference between the detected DC current and a predetermined reference current; a calculator for calculating reactive power to be generated by the DC arc furnace, from the detected DC current, the determined phase control angle, and a no-load DC voltage; a compensator including a reactive load connected via thyristor to the power system; and a controller for controlling the phase control angle of the thyristor of the compensator in accordance with the calculated reactive power, for controlling a current flowing across the reactive load, and for permitting the compensator to generate such reactive power as to compensate for a variation in the calculated reactive power.
    • 一种用于补偿由由AC / DC转换器连接到AC电力系统的DC电弧炉产生的无功功率变化引起的闪烁的闪烁补偿装置,包括:电流检测器,用于检测在直流电弧中流动的直流电流 炉; 控制器,用于根据所检测的直流电流与预定参考电流之间的差异确定包括在AC / DC转换器中的晶闸管的相位控制角; 用于计算由直流电弧炉产生的无功功率的计算器,根据检测到的直流电流,所确定的相位控制角和空载直流电压; 包括通过晶闸管连接到电力系统的无功负载的补偿器; 以及控制器,用于根据所计算的无功功率来控制补偿器的晶闸管的相位控制角,用于控制流过无功负载的电流,并且允许补偿器产生这样的无功功率以补偿变化 计算无功功率。