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56 条记录 (耗时 0.014 秒)

    Continuous casting machine of a reduced height with immersed teeming nozzle
    22.
    发明授权
    Continuous casting machine of a reduced height with immersed teeming nozzle 失效
    连续铸造机具有降低高度，带有静音喷嘴

    公开(公告)号：US5072779A

    公开(公告)日：1991-12-17

    申请号：US238301

    申请日：1988-08-31

    申请人： Riccardo Tosini ,  Alfredo Bassarutti

    发明人： Riccardo Tosini ,  Alfredo Bassarutti

    IPC分类号： B22D11/113 ,  B22D11/10 ,  B22D41/50

    CPC分类号： B22D11/10 ,  B22D41/50

    摘要： Casting method for a continuous casting machine of a reduced height with a horizontal or almost horizontal oscillatory crystallizer, whereby an immersed teeming nozzle teems molten metal into the crystallizer below the meniscus, regulation of the flow being obtained with regulation means. Pressure is kept within a tube portion of the teeming nozzle at least transiently which is related to the pressure surrounding the teeming nozzle itself and with the pressure acting on the meniscus of the molten metal in the crystallizer, the pressure within the tube portion of the teeming nozzle being such as will at least hinder the migration of gas from the exterior of the nozzle to the inside of the bore of the tube portion. An immersed teeming nozzle for a continuous casting machine of a reduce height is also disclosed. The teeming nozzle teems the metal below the meniscus of molten metal in an oscillatory crystallizer. A device to regulate the flow of the molten metal is included, the nozzle being suitable to perform the above method and comprising means at least to hinder a migration of gas from the exterior to the inside of the nozzle.

    Continuous vacuum degassing and casting of steel
    23.
    发明授权
    Continuous vacuum degassing and casting of steel 失效
    连续真空脱气和铸钢

    公开(公告)号：US4541865A

    公开(公告)日：1985-09-17

    申请号：US610884

    申请日：1984-05-16

    申请人： William L. Sherwood

    发明人： William L. Sherwood

    IPC分类号： B22D11/113 ,  C21C5/56 ,  C21C7/10 ,  B22D19/00 ,  C21C7/00

    CPC分类号： B22D11/113 ,  C21C5/567 ,  C21C7/10

    摘要： The invention provides an improved system for continuous processing of molten steel and other metals comprising continuous withdrawal, vacuum treatment and casting, employing a specialized post-treatment vessel stationed adjacent to a continually maintained supply of metal in a furnace bath. The post-treatment vessel incorporates a vacuum degassing column chamber section which is fed with metal through a withdrawal tube with the inlet inserted into the furnace bath and the outlet into the degassing column, the lower portion of which extends laterally into a tundish pouring section from which metal is poured through a nozzle directly into a continuous caster. Sealing of the continuous casting tundish cover, which is incorporated into the post-treatment vessel assembly, is a key element of the invention. Firstly, this provides for initial post-treatment vessel evacuation to start metal withdrawal, simply by sealing off the tundish nozzle (optionally together with a withdrawal tube valve), eliminating secondary starting gates, seals, or the like for the degassing column section. Secondly, it provides a metal flow path from furnace-to-mold completely excluded from the atmosphere. Thirdly, it practically eliminates the influence of intermediate flow restrictions and control points between bath and molds, the overall rate of metal flow being self adjusting throughout, according to withdrawal rate of the solidified casting, which is subject to direct external operator control. Fourthly, by excluding the atmosphere from furnace through to mold, the invention eliminates the well-know deleterious effects of oxygen and nitrogen contact with the molten steel.

    摘要翻译： 本发明提供了一种用于连续处理钢水和其他金属的改进系统，包括连续抽出，真空处理和铸造，采用专门的后处理容器，其在炉浴中连续维持的金属供应。 后处理容器包括真空脱气柱室部分，该真空脱气柱室部分通过抽出管被供入金属，入口插入熔炉中，出口进入脱气塔，其下部横向延伸到中间包浇注部分 哪个金属通过喷嘴直接注入连铸机。 包含在后处理容器组件中的连续铸造中间包盖的密封是本发明的关键元件。 首先，这简单地通过将中间包喷嘴（可选地与抽出管阀一起）密封，从而消除用于脱气塔部分的二次起动闸门，密封件等，从而提供初始的后处理容器抽出以开始金属抽出。 其次，它提供了从炉到模具完全排除在大气中的金属流动路径。 第三，它实际上消除了浴缸和模具之间的中间流量限制和控制点的影响，根据直接外部操作员控制的凝固铸件的退出速率，金属流动的整体速率是自动调整的。 第四，通过排除炉中的气氛至模具，本发明消除了与钢水接触氧和氮的有害影响。

    Electron beam furnace
    24.
    发明授权
    Electron beam furnace 失效
    电子束炉

    公开(公告)号：US4027722A

    公开(公告)日：1977-06-07

    申请号：US477357

    申请日：1965-07-27

    申请人： Charles d'A. Hunt

    发明人： Charles d'A. Hunt

    IPC分类号： B22D11/113 ,  B22D11/10

    CPC分类号： B22D11/113

    摘要： A method and apparatus for manufacturing steel and other alloys by vacuum refining are disclosed. One preferred apparatus comprises a series of vacuum chambers, one containing an electron beam heating means, and a second containing a means for adding an alloying constituent. Apparatus for melting, transferring, and casting metals is also disclosed.

    摘要翻译： 公开了一种通过真空精炼来制造钢和其它合金的方法和装置。 一个优选的装置包括一系列真空室，一个包含电子束加热装置的真空室，另一个包含加入合金成分的装置的第二装置。 还公开了用于熔融，转移和铸造金属的设备。