公开(公告)号：US4919188A

公开(公告)日：1990-04-24

申请号：US353475

申请日：1989-05-17

申请人： Manfred Fessel ,  Gerd Trinkl

发明人： Manfred Fessel ,  Gerd Trinkl

IPC分类号： B22C9/02 ,  B22C9/08 ,  B22D1/00 ,  B22D27/20

CPC分类号： B22C9/08 ,  B22D1/00 ,  B22D27/20

摘要： A mould for the production of a nodular or compacted graphite iron casting has parts comprising a treatment sprue, a runner, a slag trap, a filter chamber having an ingate and an outlet and having located therein a ceramic filter having an inlet and outlet, a casting cavity ingate, and a casting cavity, and the parts of the mould have a relationship one with another such that F2=0.8 F1 to 1.2 F1, F3=30% F4 - 100% F4, F4.gtoreq.4.5 F1, F5.gtoreq.1.3 F1, F6=2 F5 to 4 F5, F7.gtoreq.F5 and .ltoreq.F6, F8.gtoreq.F5 and .ltoreq.F6, F9=1.2 F1 to 3 F1, F10.gtoreq.F2, L2:L1=3:1 to 8:1 and L1:L3=1:1 to 3:1 where F1 is the cross-sectional area of the filter chamber ingate, F2 is the cross-sectional area of the casting ingate, F3 is the area of the filter outlet, F4 is the area of the filter inlet, F5 is the vertical cross-sectional area of the runner, F6 is the vertical cross-sectional area of the slag trap, F7 is the area of the interface of the reaction sprue and the runner, F8 is the area of the interface of the runner and the slag trap, F9 is the area of the interface of the slag trap and the filter ingate, F10 is the area of the interface of the filter chamber outlet and the casting ingate, L1 is the height of the slag trap, L2 is the length of the slag trap and L3 is the width of the slag trap.

公开(公告)号：US4908060A

公开(公告)日：1990-03-13

申请号：US366875

申请日：1989-06-13

申请人： Dietger Duenkelmann

发明人： Dietger Duenkelmann

IPC分类号： C22B9/05 ,  C22B21/06 ,  F27D27/00

CPC分类号： F27D27/00 ,  C22B21/064 ,  C22B9/05

摘要： A rotary device for dispersing gas in molten metal comprises a hollow shaft and a hollow rotor attached to the shaft, the rotor having a plurality of vanes extending from the shaft towards the periphery of the rotor and dividing the rotor into a plurality of compartments, each compartment having an inlet adjacent the shaft and an outlet adjacent the periphery of the rotor, and the rotor having means for passing gas from the discharge end of the shaft into the compartments, wherein the discharge end of the shaft opens into a manifold in the rotor and the inlets for the compartments are present in the wall of the manifold. When the device is rotated in molten metal contained in a vessel and gas is passed down the shaft, metal is drawn into the manifold and breaks up the gas stream emerging from the shaft into very small bubbles. The gas/metal dispersion flows into the compartments through the inlets and out through the peripheral outlets and the gas is dispersed through the whole body of molten metal.

公开(公告)号：US4867422A

公开(公告)日：1989-09-19

申请号：US306054

申请日：1989-02-06

申请人： Dietger Duenkelmann

发明人： Dietger Duenkelmann

IPC分类号： C22B9/05 ,  C22B21/06 ,  F27D27/00

CPC分类号： F27D27/00 ,  C22B21/064 ,  C22B9/05

摘要： A rotary device for dispersing gas in molten metal comprises a hollow shaft and a hollow rotor attached to the shaft, the rotor having a plurality of vanes extending from the shaft towards the periphery of the rotor and dividing the rotor into a plurality of compartments, each compartment having an inlet adjacent the shaft and an outlet adjacent the periphery of the rotor, and the rotor having means for passing gas from the discharge end of the shaft into the compartments, wherein the discharge end of the shaft opens into a manifold in the rotor and the inlets for the compartments are present in the wall of the manifold. When the device is rotated in molten metal contained in a vessel and gas is passed down the shaft, metal is drawn into the manifold and breaks up the gas stream emerging from the shaft into very small bubbles. The gas/metal dispersion flows into the compartments through the inlets and out through the peripheral outlets and the gas is dispersed through the whole body of molten metal.

公开(公告)号：US4849165A

公开(公告)日：1989-07-18

申请号：US191535

申请日：1988-05-09

申请人： Fritz Schaefer

发明人： Fritz Schaefer

IPC分类号： C21C1/10 ,  C21C1/02 ,  C21C7/064

CPC分类号： C21C7/0645 ,  C21C1/025

摘要： Metallurgical treatment agents for molten ferrous metals e.g. iron and steel and suitable for e.g. desulphurizing molten iron and steel comprise particulate magnesium coated with a first coating of a hydrophobic compound and a second coating of a particulate refractory material. The coated magnesium possesses improved flowability and is less prone to premature reaction when subjected to a high temperatures. The hydrophobic compound provides the magnesium with enhanced protection against hydration than may be obtained by a refractory coating alone.

公开(公告)号：US4838336A

公开(公告)日：1989-06-13

申请号：US158621

申请日：1988-02-22

申请人： Adrian L. Gray

发明人： Adrian L. Gray

IPC分类号： G01N1/12

CPC分类号： G01N1/125

摘要： This invention concerns samplers used for sampling molten metals and comprises a metal mold which is encased in a non-reactive refractory material and located in a slot in the end of an immersion tube engaged within the encasing material, the tube having at least an outer layer of non-reactive refractory material. Further the non-reactive material will provide a glass or glass-like outer surface layer thereto during use.

公开(公告)号：US4642777A

公开(公告)日：1987-02-10

申请号：US643258

申请日：1984-04-12

申请人： Lavern H. Schwanke

发明人： Lavern H. Schwanke

IPC分类号： G01S13/58 ,  G05D9/12 ,  G06G7/57 ,  G01R27/04 ,  G01S13/08 ,  G01S13/26

CPC分类号： G05D9/12 ,  G01S13/585

摘要： A method and apparatus provide for the determination of the rate-of-rise of the level of a liquid, such as molten metal in a mold, in a reliable, accurate, and flexible manner. Molten metal passes from a container through an adjustable valve in an orifice to a mold. A microwave generator is connected to a microwave antenna located above the mold for transmitting microwaves to the surface of the molten metal in the mold. A mixer/detector is operatively connected to the antenna, and a computer is operatively connected to the mixer/detector. The computer processes the mixed signal received from the mixer/detector after it is converted to a digital signal. This digital signal is responsive to the Doppler signal caused by change in the level of the metal in the mold. The rate-of-rise of the surface of the molten metal is calculated in response to the digital signal, and is displayed on a monitor. The slide gate is controlled to adjust the amount of molten metal flowing from the container to the mold to achieve a desired rate-of-rise. The computer uses various techniques, such as calculating rolling averages and optimizing maxima-to-maxima and minima-to-minima time interval calculations, to improve reliability in the presence of noise, spurious multiple reflections, and disturbances in the molten metal surface.

摘要翻译： 一种方法和装置以可靠，准确和灵活的方式确定液体（例如模具中的熔融金属）的液位升高速率。 熔融金属从容器通过孔中的可调节阀到模具。 微波发生器连接到位于模具上方的微波天线，用于将微波传输到模具中的熔融金属的表面。 混频器/检测器可操作地连接到天线，并且计算机可操作地连接到混频器/检测器。 计算机在将其转换为数字信号之后处理从混频器/检测器接收的混合信号。 该数字信号响应于模具中金属的水平变化引起的多普勒信号。 根据数字信号计算熔融金属表面的升高速率，并显示在监视器上。 控制滑动门以调节从容器流向模具的熔融金属的量以达到期望的升率。 计算机使用各种技术，例如计算滚动平均值和优化最大到最大值和最小到最小时间间隔计算，以提高在存在噪声，杂散多重反射和熔融金属表面中的干扰的可靠性。

公开(公告)号：US4561912A

公开(公告)日：1985-12-31

申请号：US648372

申请日：1984-09-07

申请人： John H. Courtenay ,  Royston J. Phillips

发明人： John H. Courtenay ,  Royston J. Phillips

IPC分类号： C21C1/00 ,  B22D11/00 ,  B22D11/07 ,  B22D11/10 ,  B22D11/108 ,  B22D11/111 ,  C21C7/076 ,  B23K35/24

CPC分类号： B22D11/111 ,  C21C7/076 ,  Y02P10/242

摘要： Fluxes for use in the casting of metals e.g. steel comprise granules containing carbonaceous powder in which the proportion of carbonaceous powder in the surface of the granules is greater than the overall proportion of carbonaceous powder in the granules. The fluxes are particularly suitable for use in the continuous casting of steel.

摘要翻译： 用于铸造金属的助焊剂例如 钢包含含有碳质粉末的颗粒，其中颗粒表面中碳质粉末的比例大于颗粒中碳质粉末的总比例。 助焊剂特别适用于钢的连续铸造。

公开(公告)号：US4430123A

公开(公告)日：1984-02-07

申请号：US290802

申请日：1981-08-05

申请人： William Simmons

发明人： William Simmons

IPC分类号： C21C1/10 ,  C21C1/08 ,  C22C33/08 ,  C22C37/00

CPC分类号： C21C1/08 ,  C22C33/08 ,  C22C37/00

摘要： Vermicular graphite cast iron is produced by adding to molten iron simultaneously up to 0.3% by weight of the iron of one or more rare earth metals and in excess of 0.2% by weight of the iron of calcium the quantity of rare earth metal being within the range of 2 to 8 times the sulphur content of the molten iron.The rare earth may be added for example as cerium, mischmetall or as rare earth silicide. The calcium may be added for example as calcium metal or as calcium silicide or a nickel-calcium alloy. An alloy containing both rare earth and calcium, such as a calcium-cerium-silicon alloy, or a composition containing rare earth, calcium and a fluxing agent may also be used.

摘要翻译： PCT No.PCT / GB80 / 00193 Sec。 371日期1981年8月5日 102（e）日期1981年8月5日PCT提交1980年11月5日PCT公布。 公开号WO81 / 01861 日期：1981年7月9日。通过向铁水中同时加入至少0.3重量％的一种或多种稀土金属的铁和超过钙的0.2重量％的量来生产电铸石墨铸铁 的稀土金属在铁水的硫含量的2至8倍的范围内。 稀土可以添加为例如铈，稀土金属或稀土硅化物。 钙可以例如作为钙金属或作为硅化钙或镍 - 钙合金添加。 还可以使用包含稀土和钙的合金，例如钙 - 铈 - 硅合金，或含有稀土，钙和助熔剂的组合物。

公开(公告)号：US4416694A

公开(公告)日：1983-11-22

申请号：US268301

申请日：1981-05-29

申请人： John Stevenson ,  John Machin ,  David L. Dyke

发明人： John Stevenson ,  John Machin ,  David L. Dyke

IPC分类号： B22C1/18 ,  B22C5/00 ,  B22C5/04 ,  B22C5/08 ,  B22C5/18 ,  C04B19/04

CPC分类号： B22C5/18 ,  B22C1/188 ,  Y10S241/10

摘要： A foundry sand composition which comprises particulate sand, aqueous sodium silicate as binder and an alkylene carbonate as hardener and which after use for moulds and/or cores in metal casting can be reclaimed for reuse by an attrition process contains before use no more than 11% by weight of alkylene carbonate based on the weight of aqueous sodium silicate and during the reclamation process has a residual moisture content of less than 0.8% by weight as determined by loss on ignition on 550.degree. C.

摘要翻译： 一种铸造砂组合物，其包含颗粒砂，硅酸钠水溶液作为粘合剂，碳酸亚烷基酯作为硬化剂，并且在用于金属铸造中的模具和/或芯体之后可以回收再利用，在使用前含有不超过11​​％ 重量的碳酸亚乙酯，基于硅酸钠水溶液的重量，并且在回收过程中，剩余含水量小于0.8重量％，通过在550℃下点火损失测定

公开(公告)号：US4279946A

公开(公告)日：1981-07-21

申请号：US937840

申请日：1978-08-29

申请人： Stewart Derbyshire

发明人： Stewart Derbyshire

IPC分类号： B22C3/00 ,  B29C1/04

CPC分类号： B22C3/00 ,  C10M2201/041 ,  C10M2201/042 ,  C10M2201/062 ,  C10M2201/102 ,  C10M2201/105 ,  C10M2201/14 ,  C10M2203/10 ,  C10M2203/102 ,  C10M2203/104 ,  C10M2203/106 ,  C10M2203/108 ,  C10M2207/046 ,  C10M2207/281 ,  C10M2207/282 ,  C10M2207/283 ,  C10M2207/286 ,  C10M2209/00 ,  C10M2209/02 ,  C10M2209/10 ,  C10M2209/101 ,  C10M2209/102 ,  C10M2209/104 ,  C10M2215/04 ,  C10M2215/26 ,  C10N2250/04 ,  C10N2250/121

摘要： Flammable foundry coatings are disclosed in which the carrier liquid is safer to handle than previously used types e.g. isopropanol, and which also burns off more satisfactorily. The carrier liquid is a mixture of an essentially aliphatic hydrocarbon liquid of flash point greater than 32.degree. C., e.g. an aliphatic petroleum distillate, and a mono alkyl ether of a polyhydric alcohol, e.g. ethylene glycol monoethyl ether (oxitol).

摘要翻译： 公开了易燃铸造涂层，其中载体液体比先前使用的类型更安全地处理。 异丙醇，也更令人满意地燃烧。 载体液体是闪点大于32℃的基本上脂族烃液体的混合物，例如 脂族石油馏出物和多元醇的单烷基醚，例如， 乙二醇单乙醚（oxitol）。