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    • 9. 发明授权
    • Production of low temperature aluminum based brazing alloys
    • 生产低温铝基钎焊合金
    • US4838341A
    • 1989-06-13
    • US169123
    • 1988-03-09
    • Richard L. Bye, Jr.Debasis BoseSantosh K. DasAmitava DattaColin M. Adam
    • Richard L. Bye, Jr.Debasis BoseSantosh K. DasAmitava DattaColin M. Adam
    • B22D11/06B23K35/28
    • B23K35/286B22D11/0697
    • Apparatus is provided for fabricating continuous metal strip composed of a low density, readily oxidizable aluminum based alloy. The alloy is cast directly from the metal through a slotted nozzle onto a moving chill substrate. A scraping mechanism located upstream of the nozzle is adapted to ride on the substrate and remove therefrom the gaseous boundary layer associated therewith. Disposed between the scraping mechanism and the nozzle is a gas supply mechanism adapted to introduce a replacement gas that is carried by the substrate to the nozzle. A shielding means configured to form a semi-enclosed chamber around the nozzle and the substrate apparatus to direct and confine the replacement gas in the vicinity of the nozzle. The alloy preferably has the form of a foil and a composition consisting essentially of about 10 to 13 weight percent silicon, 0 to 3 weight percent magnesium, 0 to 4 weight percent copper, 0 to 0.2 weight percent of at least one of bismuth, phosphorous, strontium, lithium, scandium, yttrium, sodium and calcium and 0 to 2 weight percent of at least one of the rare earth elements, the balance being aluminum and incidental impurities.
    • 提供了用于制造由低密度,容易氧化的铝基合金组成的连续金属条的装置。 合金通过开槽喷嘴直接从金属铸造到移动的冷却基板上。 位于喷嘴上游的刮削机构适于骑在基板上并从中移除与其相关联的气体边界层。 设置在刮板机构和喷嘴之间的气体供给机构适于将由基板承载的替换气体引入喷嘴。 一种屏蔽装置,被配置为围绕喷嘴和基板装置形成半封闭室,以引导并限制在喷嘴附近的置换气体。 合金优选具有箔的形式和基本上由约10至13重量%的硅,0至3重量%的镁,0至4重量百分比的铜,0至0.2重量百分比的铋,磷中的至少一种组成的组合物 ,锶,锂,钪,钇,钠和钙以及0至2重量%的至少一种稀土元素,余量为铝和杂质。