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公开(公告)号：US20080053275A1
公开(公告)日：2008-03-06
申请号：US10590472
申请日：2005-02-23
CPC分类号： B22D43/004 , B22D11/119
摘要： A method is described for priming an in-line molten metal filtration unit having a porous ceramic or refractory filter mounted substantially horizontally in a filter box. This filter box has an inlet for molten metal and an outlet for molten metal, the outlet being a closeable outlet in an exit well connecting to the downstream side of the filter. The method of the invention comprises the steps of adding a molten metal to the filter box sufficient to entirely cover the upstream side of the filter with a depth of molten metal and temporarily sealing the outlet in the exit well. A steadily increasing vacuum is then applied to the closed exit well at a rate between 0.1 and 10 kPa per second by withdrawing a stream of air from the exit well by means of a fan or air venturi until molten metal begins to flow through the filter At that point the vacuum is quickly released and the molten metal outlet is opened. Once the filter has been primed in this manner, flow of metal through the filter continues while requiring only a relatively low head of molten metal on the inlet side of the filter.
摘要翻译： 描述了一种用于启动具有基本水平地安装在过滤箱中的多孔陶瓷或耐火过滤器的在线熔融金属过滤单元的方法。 该过滤箱具有用于熔融金属的入口和用于熔融金属的出口，该出口是连接到过滤器下游侧的出口孔中的可关闭的出口。 本发明的方法包括以下步骤：将熔融金属添加到过滤箱中，足以使熔融金属的深度完全覆盖过滤器的上游侧并临时将出口密封在出口孔中。 然后通过风扇或空气文氏管抽出出口孔中的空气流，以0.1至10kPa /秒的速率将稳定增加的真空施加到封闭的出口孔，直到熔融金属开始流过过滤器。 这样就可以快速地释放真空并且打开熔融金属出口。 一旦过滤器以这种方式被喷涂，金属通过过滤器的流动继续进行，同时仅需要在过滤器的入口侧上较低的熔融金属头。
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公开(公告)号：US06257004B1
公开(公告)日：2001-07-10
申请号：US09423472
申请日：2000-02-09
申请人： Andre Gendron , Thierry Bourgeois , Yves Caron , Joseph Langlais
发明人： Andre Gendron , Thierry Bourgeois , Yves Caron , Joseph Langlais
IPC分类号： G01N2518
CPC分类号： G01N25/005 , B22D11/225 , G01N25/18 , G01N33/28
摘要： A method of measuring the quenchability of a liquid coolant used to cool objects such as ingots produced by direct-chill casting. The method involves providing a sample of the liquid coolant; providing a probe for immersion in the sample, the probe having a temperature-sensing electrical device contained therein which generates an electrical response corresponding to temperature sensed; heating the probe in a gas, preferably by means of electrical resistance heating by a circuit which is electrically connected to the temperature-sensing electrical device, to a predetermined temperature measured by the electrical response of the temperature sensing device, immersing the probe into the sample and measuring the electrical response for a predetermined measurement period, and comparing the measured electrical response to a response of a reference liquid measured under equivalent conditions, to thereby determine the quenchability property of the liquid coolant. The invention also relates to apparatus for carrying out the method, as well as a method and apparatus for controlling the cooling of the object based on the measured quenchability of the coolant. In an alternative, the probe may be heated by means other than the electrical resistance heating at a rate of at least about 40° C./second.
摘要翻译： 测量用于冷却直接冷却铸造产生的锭的物体的液体冷却剂的淬火性的方法。 该方法包括提供液体冷却剂的样品; 提供用于浸入样品中的探针，所述探针具有包含在其中的温度感测电气装置，其产生对应于感测温度的电响应; 将气体中的探针加热，优选通过电气连接到温度感测电气装置的电路的电阻加热到由温度感测装置的电响应测量的预定温度，将探针浸入样品中 并在预定的测量周期内测量电响应，并将测得的电响应与在等效条件下测量的参考液的响应进行比较，从而确定液体冷却剂的淬火特性。 本发明还涉及用于实施该方法的装置，以及用于基于所测量的冷却剂的淬火性来控制物体的冷却的方法和装置。 在另一种方案中，探针可以通过不同于电阻加热的方式以至少约40℃/秒的速率加热。
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公开(公告)号：US5020778A
公开(公告)日：1991-06-04
申请号：US351024
申请日：1989-05-12
申请人： Marc-Andre Thibault , Marc Auger , Bruno Gariepy , Andre Gendron
发明人： Marc-Andre Thibault , Marc Auger , Bruno Gariepy , Andre Gendron
CPC分类号： C22B21/0084 , C22B9/02 , Y02P10/234
摘要： The invention provides a new stirring apparatus for stirring the liquid metal contents of a furnace, particularly the shallow furnaces used in the processing of aluminum and its alloys. The apparatus consists a reservoir separate from the furnace of relatively large horizontal cross-section and volume, into which a vaccuum draws metal from the furnace through a nozzle, the metal then being returned by gas pressure forcibly into the furnace through the nozzle in the form of a horizontally directed jet. The cycle is repeated at sufficiently close intervals to ensure that the furnace bath is quickly and effectively mixed. The nozzle directs the molten metal entering the reservoir tangentially to swirl the metal and reduce the accumulation of dross. The reservoir comprises a bottom static part including the nozzle and a readily removable top cover carrying heaters for heating the reservoir interior and the dross that deposits on the side wall to ease its removal. The cover also carries level control electrodes, an observation port, inlet ports, etc. A pressure disturbance monitor connected to the reservoir interior is used for lower level control by detecting undesired bubbling of the pressurizing gas into the metal, and can also be used to monitor the pressure reversals between vacuum and pressurization phases. The cycles of vaccuum and pressure are controlled in a manner that maximizes the quantity of metal entering the reservoir so as to obtain the maximum stirring effect.
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公开(公告)号：US5918473A
公开(公告)日：1999-07-06
申请号：US854104
申请日：1997-05-09
申请人： Andre Gendron , Thierry Bourgeois , Yves Caron
发明人： Andre Gendron , Thierry Bourgeois , Yves Caron
CPC分类号： G01N25/005 , B22D11/225 , G01N25/18 , G01N33/28
摘要： A method of measuring the quenchability of a liquid coolant used to cool objects such as ingots produced by direct-chill casting. The method involves providing a sample of the liquid coolant; providing a probe for immersion in the sample, the probe having a temperature-sensing electrical device contained therein which generates an electrical response corresponding to temperature sensed; heating the probe in a gas, preferably by means of electrical resistance heating by a circuit which is electrically connected to the temperature-sensing electrical device, to a predetermined temperature measured by the electrical response of the temperature sensing device, immersing the probe into the sample and measuring the electrical response for a predetermined measurement period, and comparing the measured electrical response to a response of a reference liquid measured under equivalent conditions, to thereby determine the quenchability property of the liquid coolant. The invention also relates to apparatus for carrying out the method, as well as a method and apparatus for controlling the cooling of the object based on the measured quenchability of the coolant. In an alternative, the probe may be heated by means other than the electrical resistance heating at a rate of at least about 40.degree. C./second.
摘要翻译： 测量用于冷却直接冷却铸造产生的锭的物体的液体冷却剂的淬火性的方法。 该方法包括提供液体冷却剂的样品; 提供用于浸入样品中的探针，所述探针具有包含在其中的温度感测电气装置，其产生对应于感测温度的电响应; 将气体中的探针加热，优选通过电气连接到温度感测电气装置的电路的电阻加热到由温度感测装置的电响应测量的预定温度，将探针浸入样品中 并在预定的测量周期内测量电响应，并将测得的电响应与在等效条件下测量的参考液的响应进行比较，从而确定液体冷却剂的淬火特性。 本发明还涉及用于实施该方法的装置，以及用于基于所测量的冷却剂的淬火性来控制物体的冷却的方法和装置。 在另一种方案中，探针可以通过不同于电阻加热的方式以至少约40℃/秒的速率加热。
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