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公开(公告)号：US20230134954A1
公开(公告)日：2023-05-04
申请号：US17960141
申请日：2022-10-05
发明人： Takeshi OKADA , Atsushi YAMASHITA
摘要： A cold flake suppression method is provided. A molding device includes a sleeve, a tip, a sprue guide portion, a molding die, a sprue ring, a distributer, and a control device. The sprue guide portion includes a stamp portion, a runner portion, and a gate portion. The control device drives a supply device to slide the tip for molten metal to flow through the sleeve; sequentially calculates an amount of heat transfer changing continuously from the start of supply of molten metal until the tip slides to the position in FIG. 2, and calculates a total of the amounts as a total amount of heat transfer; and calculates a volume of the sprue guide portion based on information about the sprue guide portion input by an operator. Shapes of the sleeve and the sprue guide portion are determined to set a cold flake index equal to or less than 0.842.
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公开(公告)号：US20230012857A1
公开(公告)日：2023-01-19
申请号：US17756478
申请日：2020-10-21
摘要： Provided is a method of, in ladle refining treatment of a molten steel, accurately estimating the molten steel temperature after the ladle refining treatment. An operation method of ladle refining treatment by which ladle refining treatment of a molten steel is performed while continuously measuring a molten steel temperature during operation of the ladle refining treatment of the molten steel comprises setting a time earlier than a scheduled ending time of the ladle refining treatment in a continuous measurement period of the molten steel temperature as a determination timing, and estimating the molten steel temperature at the scheduled ending time on the basis of a change with time of the molten steel temperature in continuous measured data of the molten steel temperature from a start of continuous measurement of the molten steel temperature to the determination timing.
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公开(公告)号：US11458533B2
公开(公告)日：2022-10-04
申请号：US17009792
申请日：2020-09-02
发明人： Chih-Ang Chung , Ya-Huan Lee , Tsung-Han Chuang , Tsung-Hsuan Chiang , Chih-Shan Yen , Jeng-Rong Ho , Jason Shian-Ching Jang
摘要： A measuring device includes a furnace, a draining vessel, a loader and a computing system for physical properties. The draining vessel with molten metal fluid is in the furnace. The loader accumulates the molten metal fluid from the draining vessel. The computing system includes a recording unit, transform unit, computing unit and processor. The recording unit records the vessel information. By the assumed physical parameters and the vessel information, the transform unit transforms a weight of the molten metal fluid in the loader into a first length criterion, and the computing unit simulates the flowing of the molten metal fluid to have a second length criterion. The processor minimizes the difference of the first and the second length criterion by changing the assumed physical parameters. The physical properties of the molten metal fluid are determined when the difference is minimized.
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公开(公告)号：US20210370286A1
公开(公告)日：2021-12-02
申请号：US17444937
申请日：2021-08-12
发明人： Jan Doets , Guy Neyens , Dries Beyens , Jean-Paul Verhoeven , Arne Potargent
摘要： The present invention relates to a sampler for taking samples from a molten metal bath, particularly a molten iron, the sampler comprising: a carrier tube having an immersion end; and a sample chamber assembly arranged on the immersion end of the carrier tube, the sample chamber assembly comprising a cover plate and a housing, wherein the housing comprises: an immersion end having a first opening for an inflow conduit and an opposing end having a second opening for a gas coupler, a first face extending between the immersion end and the opposing end, the first face having a first depression proximate the immersion end and a second depression, the first depression being an analysis zone and the second depression being a ventilation zone, a portion of the analysis zone overlying a distribution zone which is in direct flow communication with the first opening and configured to receive the molten steel from the inflow conduit, wherein the first depression having a cross sectional circle segment profile along a central longitudinal axis that is concavely or triangularly shaped, wherein the cover plate and the housing are configured to be assembled together to form a sample cavity including the distribution zone, the analysis zone and the ventilation zone, such that an analysis surface of a solidified steel sample formed within the sample cavity lies in a first plane, and wherein the first and second openings are spaced apart from the first plane. The invention also relates to a sampler for taking samples from a molten metal bath, particularly a molten iron, the sampler comprising: a carrier tube having an immersion end; a sample chamber assembly arranged on the immersion end of the carrier tube, the sample chamber assembly comprising a cover plate and a housing, wherein the cover plate comprising a sealing member configured to provide a substantially gas tight seal between the cover plate and the housing, wherein the sealing member consist of an essentially non-contaminating material for the samples in the sample chamber.
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公开(公告)号：US10974314B2
公开(公告)日：2021-04-13
申请号：US16496307
申请日：2018-03-12
申请人： ABB Schweiz AG
发明人： Martin Sedén
IPC分类号： B22D2/00 , G01K7/42 , G01K11/3206 , G01K7/02
摘要： A method of determining a temperature distribution in a mold plate of a mold for a metal-making process, wherein the method includes: obtaining a temperature value from each of a plurality of temperature sensors arranged in the mold plate, each temperature sensor being spaced apart from a respective reference point in the mold plate, determining for each temperature value a reference point temperature value at the corresponding reference point using either a respective linear function or a respective non-linear function, wherein a correction factor and correction term of the linear function or a set of parameters in a general non-linear formulation of the non-linear function is obtained from a plurality of initial temperature relationships, wherein each initial temperature relationship is between a simulated temperature at the corresponding temperature sensor in the mold plate and a simulated temperature at the corresponding reference point in the mold plate, each simulated temperature being obtained based on a respective simulation of a model of the mold plate for a unique mold plate condition where the thermal boundary conditions of the mold plate have been completely, explicitly and uniquely stated, and obtaining an estimated temperature distribution at the reference points in the mold plate by means of the reference point temperature values.
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公开(公告)号：US20200269309A1
公开(公告)日：2020-08-27
申请号：US16652497
申请日：2018-10-05
IPC分类号： B22D2/00 , G01N33/205 , G01N27/411
摘要： An immersion sensor is configured to determine the content of a chemical element in molten metal. The immersion sensor has an auxiliary electrochemical cell extending from an interior surface into the internal volume of a sampling chamber. The sampling chamber can be integrally-formed in a sensor head or in a separate refractory structure. The immersion sensor may be configured for the flow of molten metal into the internal volume of the sampling chamber and into contact with the auxiliary electrochemical cell.
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公开(公告)号：US10322450B2
公开(公告)日：2019-06-18
申请号：US15116625
申请日：2015-02-04
申请人： PYROTEK, INC.
摘要： The present invention is directed to a molten metal transfer system. The system includes a pump having interchangeable low flow and high flow impellers and selective low flow and high flow transfer troughs.
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公开(公告)号：US20190144969A1
公开(公告)日：2019-05-16
申请号：US16302880
申请日：2017-05-23
发明人： Henrik FRANZ , Ulrich BIEBRICHER , Harald SCHOLZ
摘要： A melting vessel for performing an electro-slag melting method and such a method are presented. Measuring devices measuring a temperature at different heights allow conclusions about position and height of a slag zone in the melting vessel during the method.
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公开(公告)号：US20190119782A1
公开(公告)日：2019-04-25
申请号：US16006872
申请日：2018-06-13
发明人： Guangdong ZHU , Junkang JI , Jiqing LI
摘要： The present invention discloses a method for producing high-purity magnesium by semi-continuous distillation, comprising the following steps of: (1) melting crude magnesium or recycled mixed metal containing magnesium containing various impurities in a melting boiler; (2) feeding the molten crude magnesium into a second boiler by a magnesium liquid delivery pump, and maintaining a temperature of 665° C. to 700° C.; (3) sucking the high-temperature magnesium liquid into a crude distillation column in vacuum by a magnetic liquid suction pipe that is inserted into the intermediate boiler and connected to the crude distillation column. Magnesium is condensed into liquid in the rectification column, then discharged from a liquid seal of the rectification column, and ingoted in a refined magnesium die to obtain high-purity magnesium products.
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公开(公告)号：US09993870B2
公开(公告)日：2018-06-12
申请号：US15114728
申请日：2016-03-21
摘要： A control pin for controlling the flow of molten metal through a down spout in a casting process is provided. The control pin comprises a body having an elongated shape, a lower portion insertable in the down spout, and a terminal end, opposite the lower portion. The body includes a central core, preferably a hollow tube or a rod of alumina or mullite; a heating element disposed around the central core, and an intermediate layer surrounding the central core and encasing the heating element, the intermediate layer being made of a solidified ceramic putty. Finally, an outer shell, preferably made of woven fiber reinforcing fabric in a matrix of ceramic, surrounds the intermediate layer.
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