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    • 5. 发明公开
    • Purifying steel
    • Reinigen von Stahl。
    • EP0239257A1
    • 1987-09-30
    • EP87301736.2
    • 1987-02-27
    • FOSECO INTERNATIONAL LIMITED
    • Luyckx, Leon Andre
    • B22D11/10C21C7/00C22B9/02
    • C22B9/055B22D11/119C21C7/0006
    • A method of purifying steel in a tundish, especially to remove alumina inclusions, comprises passing the steel through at least one refractory board (2, 3, 4) having apertures through it and introducing inert gas into the steel at the upstream side of the foot of the board to cause a stream of bubbles to flow over the upstream side of the board. One of the boards (2, 3, 4) may comprise a ceramic filter element. The boards may be non-vertical and have integral gas supply means. The apertures may taper, may have axes angled from perpendicular to the board's plane and may have high alumina content surfaces. The upstream side of the board may have an exothermic layer.
    • 在中间包中,特别是去除氧化铝夹杂物中的钢的净化方法包括使钢穿过至少一个具有孔的耐火板(2,3,4),并在惰性气体的上游侧引入惰性气体 的板子导致气泡流在板的上游侧。 其中一个板(2,3,4)可以包括陶瓷过滤元件。 板可以是非垂直的并且具有一体的气体供应装置。 孔可以渐缩,可以具有垂直于板的平面的轴线,并且可以具有高氧化铝含量的表面。 板的上游侧可以具有放热层。
    • 8. 发明公开
    • Method of casting lithium containing aluminium alloys
    • Verfahren zumGießenvon Lithium mit Aluminiumlegierungen
    • EP2789706A1
    • 2014-10-15
    • EP13163369.5
    • 2013-04-11
    • Aleris Rolled Products Germany GmbH
    • Brandt, Fred
    • C22C1/02C22F1/04
    • B22D7/005B22D1/00B22D7/02B22D11/041B22D11/086B22D11/10B22D11/119B22D21/007B22D21/04B22D37/00C22C1/026C22C21/00
    • The invention relates to a method of casting an ingot of an aluminium alloy comprising lithium, comprising the steps of: (a) preparing at least two molten aluminium based alloys in separate furnaces, a first alloy with a composition A which is free from lithium as purposive alloying element, and a second alloy with a composition B which comprises lithium as purposive alloying element; (b) transferring the first alloy via a metal conveying trough from the furnace to a casting station; (c) initiate the start of casting an ingot and casting the first alloy to a required length L1 of an ingot in the casting direction; (d) subsequently transferring the second alloy via a metal conveying trough from the furnace to the casting station while simultaneously stopping the transfer of the first alloy to said casting station; (e) casting the second alloy from an end surface of the cast first alloy at length L1 to an additional required length L2 in the casting direction; (f) cropping the cast ingot at a bottom thereof at a length that is greater than of equal to the cast length L1.
    • 本发明涉及一种铸造包含锂的铝合金锭的方法,包括以下步骤:(a)在单独的炉中制备至少两种熔融铝基合金,第一种合金的组成A不含锂作为 有目的的合金元素和具有组成B的第二合金,其包含锂作为有目的的合金元素; (b)通过金属输送槽将第一合金从炉转移到铸造台; (c)开始铸造铸锭并将第一合金铸造成铸锭方向上所需长度的铸锭长度L1; (d)随后通过金属输送槽将第二合金从炉转移到铸造站,同时停止将第一合金转移到所述铸造工位; (e)将铸造第一合金的端面长度为L1的第二合金从铸造方向铸造到另外的所需长度L2; (f)在其底部以大于等于铸造长度L1的长度裁剪铸锭。