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    • 2. 发明授权
    • Process for ingot casting employing a magnetic field for reducing
macrosegregation and associated apparatus and ingot
    • 用于减少宏观偏析的磁场的晶锭铸造工艺以及相关的装置和锭
    • US5375647A
    • 1994-12-27
    • US101462
    • 1993-08-02
    • Que-Tsang FangEdmond S. MikschGregory J. Hildeman
    • Que-Tsang FangEdmond S. MikschGregory J. Hildeman
    • B22D11/01B22D11/115B22D11/12B22D27/02
    • B22D11/122B22D11/115
    • A process of reducing macrosegregation in the casting of a metal alloy ingot is disclosed. The process includes introducing a molten metal alloy into a casting mold cavity, cooling the molten metal alloy to form a solid zone, a liquid-solid mushy zone overlying the solid zone, a liquid zone overlying the liquid-solid mushy zone and a melt surface on the liquid zone, employing during the cooling at least one substantially static magnetic field having at least two planes of symmetry which intersect on the longitudinal axis of the ingot, generating the magnetic field by at least one coil means having an inner region through which the metal alloy passes, energizing the coil means by a substantially static electrical current wherein the current follows a path defined by the coil means and passes around at least one of the molten metal alloy and the zones, improving the strength and uniformity of the magnetic field by at least one ferromagnetic flux path, and dampening convection flows of the molten metal alloy which cause macrosegregation by means of the magnetic field. An associated apparatus suitable for casting metal alloys and an improved ingot having a refined equiaxed grain structure and a reduced pore size are provided.
    • 公开了一种减少铸造金属合金锭中的宏观偏析的方法。 该方法包括将熔融金属合金引入铸模腔中,冷却熔融金属合金以形成固体区域,覆盖固体区域的液体 - 固体糊状区域,覆盖液体 - 固体糊状区域的液体区域和熔融表面 在液体区域中,在冷却期间采用至少一个基本上静态的磁场,该至少一个基本上静态的磁场具有至少两个在该铸锭的纵向轴线上相交的对称面,通过至少一个线圈装置产生磁场,该线圈装置具有内部区域, 金属合金通过,通过基本静态的电流对线圈装置通电,其中电流遵循由线圈装置限定的路径并且绕过熔融金属合金和区域中的至少一个,从而通过以下方式提高磁场的强度和均匀性: 至少一个铁磁通路,以及通过磁场引起宏观偏析的熔融金属合金的阻尼对流。 提供了适用于铸造金属合金的相关设备和具有精制等轴晶粒结构和减小孔径的改进锭。
    • 3. 发明授权
    • Method and apparatus for casting a plurality of closely-spaced ingots in
a static magnetic field
    • 用于在静态磁场中铸造多个紧密间隔的铸锭的方法和装置
    • US5222545A
    • 1993-06-29
    • US871337
    • 1992-04-21
    • Edmond S. MikschQue-Tsang Fang
    • Edmond S. MikschQue-Tsang Fang
    • B22D11/115B22D11/14
    • B22D11/147B22D11/115
    • Method and apparatus for reducing macrosegregation in the simultaneous casting of a plurality of metal alloy ingots in a continuous or semicontinuous casting operation. Several casting molds are arranged closely together in an array. An outer electromagnetic coil is arranged around the outer periphery of the array of molds and their formed ingots. Preferably, when the circular molds are employed, a solenoid is provided in the central space of the molds. Direct current in the outer coil and in the solenoid create a static magnetic field whose combined effect acts on the liquid pool of the molten metal. The outer coil has straight sides and curved corners. Passive flux return devices are located along the straight sides of the outer coil. If rectangular molds are used, then only the outer electromagnetic coil is arranged around the casting assembly.
    • 在连续或半连续铸造操作中同时铸造多个金属合金锭的方法和装置,用于减少宏观偏析。 几个铸模紧密地排列成阵列。 外部电磁线圈围绕模具阵列的外周和它们形成的锭布置。 优选地,当使用圆形模具时,在模具的中心空间中设置螺线管。 外部线圈和螺线管中的直流电流产生一个静态磁场,其组合效应作用于熔融金属的液体池。 外线圈具有直边和弯曲的角。 无源磁通返回装置沿着外部线圈的直边设置。 如果使用矩形模具,则只有外部电磁线圈布置在铸造组件周围。
    • 4. 发明授权
    • Fine grain casting by mechanical stirring
    • 通过机械搅拌精细晶粒铸造
    • US4960163A
    • 1990-10-02
    • US274309
    • 1988-11-21
    • Que-Tsang FangMichael J. Kinosz
    • Que-Tsang FangMichael J. Kinosz
    • B22D11/114
    • B22D11/114
    • An apparatus and method of casting a melt into an ingot possessing a fine grain structure. The apparatus comprises (1) a casting mold for holding a reservoir of melt; (2) a partition means located in the melt for dividing the melt into a melt supply reservoir located on a first side of the partition means and a solidification reservoir on a second side of the partition means, the partition means having a communication means for permitting melt to flow from the melt supply reservoir to the solidification reservoir, the partition preventing turbulence from the solidification reservoir to be transferred to the surface of the melt; and (3) means for stirring the portion of the melt located in the solidification reservoir. The means for stirring provides nuclei for grain refinement of the ingot.
    • 将熔体铸造成具有细晶粒结构的锭的装置和方法。 该装置包括(1)用于保持熔体储存器的铸模; (2)位于所述熔体中的分隔装置,用于将所述熔体分成位于所述分隔装置的第一侧上的熔体供给容器和在所述分隔装置的第二侧上的凝固储存器,所述分隔装置具有用于允许的连通装置 熔体从熔体供应储存器流动到凝固储存器,防止来自凝固储存器的湍流转移到熔体表面的隔板; 和(3)用于搅拌位于凝固槽中的熔体部分的装置。 用于搅拌的方法为晶粒细化提供了核。
    • 6. 发明授权
    • Alloy for cast components
    • 铸件用合金
    • US5667602A
    • 1997-09-16
    • US414985
    • 1995-03-31
    • Que-Tsang FangSteven A. JonesJames R. Van WertRoger C. Dickenson
    • Que-Tsang FangSteven A. JonesJames R. Van WertRoger C. Dickenson
    • C22C21/06C22F1/047C22F1/04
    • C22C21/06C22F1/047
    • Alloy and cast alloy product ideally suited for use as a component in a vehicle frame or subframe, i.e., body-in-white, comprising an alloy consisting of about 2.00 to 5.00 wt. % magnesium, up to approximately 0.30 wt. % silicon, approximately 0.20 to 1.60 wt. % manganese, up to approximately 1.00 wt. % iron, and between about 0.10 to 0.30 wt. %, zirconium, the balance substantially aluminum and incidental elements and impurities. The aluminum/magnesium alloy is typically solidified into ingot derived working stock by continuous casting or semi-continuous casting into a shape suitable for remelt for casting, which shape is typically an ingot billet. Excellent mechanical properties are obtained from a cast product that is not subjected to high temperature heat treating operations subsequent to casting.
    • 合金和铸造合金产品理想地适合用作车辆框架或副车架中的部件,即白车身,包括由约2.00至5.00重量% %镁,至多约0.30重量% %硅,约0.20至1.60wt。 %锰,高达约1.00wt。 %铁,和约0.10〜0.30重量% %,锆,余量基本上为铝和附带的元素和杂质。 铝/镁合金通常通过连续铸造或半连续铸造固化成锭铸造的工作原料,成为适于铸造重熔的形状,其形状通常为铸锭坯料。 从铸造后不经受高温热处理的铸造产品获得优异的机械性能。
    • 10. 发明授权
    • Petroleum coke melt cover for aluminum and magnesium alloys
    • 用于铝和镁合金的石油焦熔体盖
    • US06733566B1
    • 2004-05-11
    • US10457269
    • 2003-06-09
    • Que-Tsang FangJen C. LinTimothy A. KuhnHolger Haddenhorst
    • Que-Tsang FangJen C. LinTimothy A. KuhnHolger Haddenhorst
    • C22B2106
    • C22B21/062C22B9/006
    • A method for preventing oxidation of molten aluminum alloy and magnesium alloy surfaces, the method comprising providing a molten aluminum alloy or magnesium alloy having a molten aluminum or magnesium alloy surface; covering the molten aluminum or magnesium alloy surface with an initial layer of petroleum coke, the initial layer of petroleum coke having an initial layer thickness of about 0.75 inches; oxidizing a portion of the initial layer of petroleum coke to form a working layer of petroleum coke covering the molten metal surface, the working layer of coke having a working layer thickness of about 0.5 inches, and a layer of carbon dioxide immediately adjacent to and contiguous with the working layer of petroleum coke; and adding additional petroleum coke to the working layer of petroleum coke to maintain the working layer thickness at about 0.5 inches.
    • 一种防止熔融铝合金和镁合金表面的氧化的方法,所述方法包括提供具有熔融铝或镁合金表面的熔融铝合金或镁合金; 用初始的石油焦炭层覆盖熔融的铝或镁合金表面,初始层石墨焦炭的初始层厚度约为0.75英寸; 氧化石油焦的初始层的一部分以形成覆盖熔融金属表面的石油焦炭的工作层,焦炭的工作层具有约0.5英寸的工作层厚度和紧邻并连续的二氧化碳层 与石油焦炭的工作层; 并向石油焦炭的工作层添加额外的石油焦,以将工作层厚度保持在约0.5英寸。