Method of retarding the cooling of molten metal
    1.
    发明授权
    Method of retarding the cooling of molten metal 失效
    延缓熔融金属冷却的方法

    公开(公告)号:US4181522A

    公开(公告)日:1980-01-01

    申请号:US871981

    申请日:1978-01-23

    IPC分类号: B22D11/106 C22B9/00

    CPC分类号: C22B9/006 B22D11/106

    摘要: The cooling of molten metal, such as metal continuously cast into an ingot mold, is retarded by establishing on the upper surface of the metal in the mold, a layer of cryogenic liquid such as nitrogen, helium or argon, with a finely divided material in homogeneous and stable suspension in the liquid. The finely divided material is in the form of particles having a size between 200 and 2,000 A and is present in a quantity between 10 and 1,000 grams per liter of cryogenic liquid. The suspended material may be aluminum, titanium, zirconium, niobium, calcium, lithium, magnesium, solid glass, or an oxide of aluminum, titanium, zirconium, niobium, calcium, lithium or magnesium, and is highly reflective to infrared radiation from the metal so as to reduce the transparency of the cryogenic liquid to this infrared radiation.

    摘要翻译: 通过在模具中的金属的上表面上建立诸如氮气,氦气或氩气的低温液体层,熔融金属(例如连续铸造到铸锭模具中的金属)的冷却被延迟,其中细碎的材料 在液体中均匀稳定的悬浮液。 精细分散的材料是尺寸为200至2,000A的颗粒形式,其存在量为10至1,000克/升低温液体。 悬浮物可以是铝,钛,锆,铌,钙,锂,镁,固体玻璃或铝,钛,锆,铌,钙,锂或镁的氧化物,并且对来自金属的红外辐射是高反射性的 以便降低低温液体对该红外辐射的透明度。

    Method of centrifugally casting metal under an inert atmosphere
    3.
    发明授权
    Method of centrifugally casting metal under an inert atmosphere 失效
    在惰性气氛下离心铸造金属的方法

    公开(公告)号:US4211269A

    公开(公告)日:1980-07-08

    申请号:US906553

    申请日:1978-05-16

    摘要: This invention relates to a method of casting metal in a rotary mould or die under the protection of an inertizing atmosphere formed by a liquefied gas. In the mould or die, successive casting operations are performed with different metals while maintaining an infeed of liquefied gas during each of these casting operations and while the metal involved is solidifying, until an end product is obtained which is formed from a plurality of layers of different metals. The invention is applicable in particular, but not exclusively, to the production of centrifugally cast tubes and rolling-mill rolls.

    摘要翻译: 本发明涉及在由液化气体形成的惰性气氛的保护下在旋转模具或模具中铸造金属的方法。 在模具或模具中,连续铸造操作是用不同的金属进行的,同时在这些铸造操作期间保持液化气体的进料,同时所涉及的金属凝固,直到获得最终产品,形成多个层 不同的金属。 本发明特别但不排他地适用于离心铸造管和轧制辊的生产。

    Process and installation for protecting a jet of molten metal for casting
    4.
    发明授权
    Process and installation for protecting a jet of molten metal for casting 失效
    用于保护用于铸造的熔融金属射流的工艺和安装

    公开(公告)号:US4460409A

    公开(公告)日:1984-07-17

    申请号:US474543

    申请日:1983-03-11

    CPC分类号: B22D11/106

    摘要: The invention relates to the protection of a casting jet of molten metal, flowing between an upper storage tank and a lower receiving vessel. At least one inert liquefied gas is injected above and close to the surface of the molten metal contained in the lower vessel, and, at the same time, at least one inert gas is injected into the molten metal through the base or the walls of the lower vessel. The process of this invention protects metal casting jets from oxidation, for example, jets between ladle and manifold, between ladle and ingot mold, between ladle and ladle, or between converter (or furnace) and ladle.

    摘要翻译: 本发明涉及在上储存罐和下容纳容器之间流动的熔融金属铸造射流的保护。 将至少一种惰性液化气体注入到容纳在下容器中的熔融金属的表面上方并且靠近其中,并且同时至少一种惰性气体通过基底或壁的壁施加到熔融金属中 下游船 本发明的方法保护金属铸造射流免受氧化,例如钢包和歧管之间,钢包和锭模之间,钢包和钢包之间,或转炉(或炉)和钢包之间的喷射。