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    • 7. 发明授权
    • Method for cleaning molten metal and apparatus therefor
    • 清洗熔融金属的方法及其设备
    • US5091000A
    • 1992-02-25
    • US516478
    • 1990-04-30
    • Toshio IshiiYutaka OkuboShuzo FukudaYoshihiko KawaiShunichi SugiyamaYoshiteru KikuchiHidetoshi Matsuno
    • Toshio IshiiYutaka OkuboShuzo FukudaYoshihiko KawaiShunichi SugiyamaYoshiteru KikuchiHidetoshi Matsuno
    • C21C5/56C21C7/00C21C7/072C21C7/10C22B9/05
    • C22B9/05C21C7/0081C21C7/072C21C7/10C21C5/567
    • Molten metal is put under pressure of up to 10 atmospheres in a covered ladle and a gas soluble in the metal is bubbled through the melt. Some gas goes into solution, while the remainder rises in bubbles and brings inclusions suspended in the molten metal up to the surface. Then the pressure is lowered, after which gas comes out of the solution in fine bubbles which also bring impurity inclusions up to the surface. In another method molten steel is refined at pressures not exceeding atmospheric pressure in a covered ladle equipped for evacuation and equipped for bubbling gas through the molten steel bath. Bubbling followed by pressure reduction can then be performed to form two stages of cleaning. Heat may be added for compensating the cooling effect of gas expansion. Instead of a closed ladle, an open ladle may be used, into which there can be dipped a chamber fitted for evacuation and having two large tubes at opposite sides of the chamber extending downwards to orifices that may be lowered into the molten metal in the ladle. The melt is then drawn up into the chamber by atmospheric pressure as the chamber is evacuated. Then bubbling may be performed in one connecting tube by injection of gas from the bottom of the ladle, or at a mid-level of the tube, to produce circulation of the molten metal up into the chamber and down through the other tube.
    • 在覆盖的钢包中将熔融金属置于高达10个大气压的压力下,溶解在金属中的气体通过熔体鼓泡。 一些气体进入溶液,而其余的气体会上升,并使悬浮在熔融金属中的夹杂物直到表面。 然后降低压力,之后,气体从微细气泡中排出,这也使杂质夹杂物直到表面。 在另一种方法中,在装备用于抽空并且用于鼓泡气体通过钢水浴的装备的覆盖钢包中,将钢水在不超过大气压的压力下精炼。 然后可以进行鼓泡,然后进行减压以形成两个阶段的清洁。 可以添加热量来补偿气体膨胀的冷却效果。 可以使用开放的钢包,而不需要一个开放的钢包,其中可以浸入一个适于抽真空的室,并且在室的相对侧有两个较大的管子向下延伸到可以放入钢包中的熔融金属的孔中 。 随着室被抽真空,熔体随后通过大气压被拉入腔室。 然后可以在一个连接管中通过从钢包的底部注入气体或在管的中间层进行鼓泡,以产生熔融金属向上流入腔室并向下通过另一个管的循环。
    • 9. 发明授权
    • Method for controlling coating weight on a hot-dipped steel strip
    • 控制热镀锌钢带上镀层重量的方法
    • US5384166A
    • 1995-01-24
    • US150759
    • 1993-11-10
    • Toshio SatoToshio IshiiShunichi SugiyamaAkira Yada
    • Toshio SatoToshio IshiiShunichi SugiyamaAkira Yada
    • B05D1/18B21B39/02C21D9/56C23C2/24F16F15/03B05D1/04
    • C21D9/56C23C2/24F16F15/03
    • A method for controlling coating weight on a hot-dipped steel strip comprises the steps of positioning at least one pair of high-frequency (alternating) current conducting paths near one side of a steel strip and near another side of the steel strip drawn out of a coating bath, each of the high-frequency (alternating) current conducting paths being parallel with a surface of the steel strip above the coating bath, and flowing a-high-frequency (alternating) current strong enough to magnetically saturate the steel strip through the at least one pair of high-frequency (alternating) current conducting paths to induce a high-frequency (alternating) current of an opposite phase in the steel strip, a magnetic pressure acting on surfaces of the steel strip being generated by an interaction of the induced high-frequency (alternating) current with a high-frequency (alternating) current of the high-frequency (alternating) current conducting paths.
    • 一种用于控制热浸钢带上的涂层重量的方法包括以下步骤:在钢带的一侧附近定位至少一对高频(交替)电流传导路径,并且在钢带的另一侧附近, 涂层浴,每个高频(交流)电流传导路径平行于涂层浴槽上方的钢带表面,并且流动高频(交替)电流足够强以使钢带通过磁性饱和 所述至少一对高频(交流)电流传导路径,以引起钢带中相反相位的高频(交替)电流,作用在钢带表面上的磁力压力是通过相互作用产生的 感应高频(交流)电流与高频(交流)电流导通路径的高频(交流)电流。