WO2016069064A1 - Fusion et coulée par induction sous vide double - Google Patents

Fusion et coulée par induction sous vide double Download PDF

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Publication number
WO2016069064A1
WO2016069064A1 PCT/US2015/038065 US2015038065W WO2016069064A1 WO 2016069064 A1 WO2016069064 A1 WO 2016069064A1 US 2015038065 W US2015038065 W US 2015038065W WO 2016069064 A1 WO2016069064 A1 WO 2016069064A1
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WO
WIPO (PCT)
Prior art keywords
melt
chamber
casting
casting mold
loading
Prior art date
Application number
PCT/US2015/038065
Other languages
English (en)
Inventor
Robert Cook
Thomas WOOLEY
John Mckellar
Mike MULALLEY
Original Assignee
Retech Systems Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Retech Systems Llc filed Critical Retech Systems Llc
Priority to JP2017521227A priority Critical patent/JP2017533099A/ja
Priority to EP15856007.8A priority patent/EP3212353A4/fr
Publication of WO2016069064A1 publication Critical patent/WO2016069064A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D47/00—Casting plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • B22D2/006—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the temperature of the molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
    • B22D21/025—Casting heavy metals with high melting point, i.e. 1000 - 1600 degrees C, e.g. Co 1490 degrees C, Ni 1450 degrees C, Mn 1240 degrees C, Cu 1083 degrees C
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/15—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using vacuum

Definitions

  • the present disclsoure relates to a system, apparatus, and method of melting and casting metals in a controlled atmospheric environment, such as those that, use vacuum induction melting.
  • the system, apparatus, and method is particularly useful for high temperature metals, alloys, and superalloys, including alloys used in the aerospace industry such as nickel-chromium alloys.
  • the present, disclosure provides for a vacuum induction casting apparatus that can include a loading chamber configured to receive a casting mold; a melt chamber, configured to concurrently house a first melt box and a second melt box; an interlock mechanically coupled to both the loading chamber and the melt chamber; a loading mechanism, configured to move the casting mold into and out of the melt chamber through the interl ock to a casting position; and a vacuum system coupled to both the melt chamber and to the loading chamber.
  • the loading mechanism can be a loading elevator configured to reciprocally move the casting mold vertically through the interlock.
  • the loading mechanism can be a platen configured to reciprocally move the casting mold horizontally through the interlock.
  • the vacuum induction casting apparatus further can include a charge temperature sensor system coupled with the melt chamber and configured to measure temperatures of one or more molten charges in either or both of the first melt box and the second melt box.
  • the vacuum induction casting apparatus can further include a mold temperature sensor system coupled with the melt chamber and configured to measure a temperature of a mold within the casting mold.
  • the vacuum system separately controls pressure within the melt chamber and the loading chamber.
  • the vacuum system can further include a first vacuum system and a second vacuum system atmospherically separate from each other, where the first vacuum system is coupled to the melt chamber and where the seco d vacuum system is coupled to the loading chamber.
  • the vacuum induction casting apparatus is further configured to allow for the melt chamber to load an alloy charge into either or both of the first melt box and the second melt box concurrent with the loading mechanism in a position outside of the melt chamber.
  • the vacuum induction casting apparatus can include a third melt box and/or a fourth melt box.
  • the present disclosure provides for a method of forming castings that includes: loading a first alloy charge into a first melt box and a second alloy charge into a second melt box within a melt chamber of a furnace system; melting the first and second alloy charges within the first melt box and the second melt box to be molten; pre-heating an initial casting mold and pre-heating a subsequent casting mold; loading the initial casting mold into a loading chamber of the furnace system; moving the initial casting mold to a casting position within the melt chamber; pouring the molten first alloy charge from, the first melt box into the initial casting mold; moving the initial casting mold out of the melt chamber and removing the initial casting mold from the furnace system; loading the subsequent casting mold into the loading chamber of the furnace system; moving the subsequent casting mold to the casting position within the melt chamber; pouring the molten second alloy charge from the second melt box into the subsequent casting mold; and moving the subsequent casting mold out of the melt chamber and removing the subsequent casting mold from the furnace system.
  • the method further includes, reducing the pressure in the melt chamber and reducing the pressure in the loading chamber.
  • the method can include reducing the pressure in the melt chamber to about 5 mTorr and reducing the pressure in the loading chamber to about 100 mTorr.
  • the initial casting mold and the subsequent casting mold can each be pre -heated to a temperature of about 800°C to about 1 ,000°C.
  • the melt chamber can be raised to a temperature of about 1,300°C to melt either or both of the first and second alloy charges within the first melt box and the second melt box.
  • the casting mold can be removed from the furnace system and allowed to cool such that a casting in the casting mold has an equiaxed structure.
  • the method can include reloading an alloy charge into either or both of the first melt box and the second melt box after either the initial casting mold or the subsequent casting mold is moved out of the melt chamber.
  • the method can include used of a third melt box and/or a fourth melt box in order to allow for easting of a third and/or fourth casting moid as part of a processing cycle.
  • FIG, 1 is a flowchart illustrating a process for casting a metal or alloy moid in combination with a dual melt box melt chamber, in accordance with some embodiments of the present disclosure.
  • FIG. 2 is a schematic diagram of a connected mold chamber and melt chamber coupled with an atmospheric and vacuum control system, in accordance with some embodiments of the present disclosure.
  • FIG, 3 is a schematic diagram of a furnace system having a connected mold chamber and melt chamber, in accordance with some embodiments of the present disclosure.
  • Embodiments of the present disclosure provide for a vacuum induction melting and casting system and related method for efficiently and effectively casting metal, alloy, and superalloy parts.
  • Vacuum induction casting (alternatively referred to as vacuum, pressure casting) can be considered a subset of investment casting or lost-wa casting, where a ceramic mold (alternatively referred to as the investment, shell, or casting mold) produced by investment, casting is placed within a melt chamber, the pressure in the chamber is reduced to vacuum (or a sufficiently low pressure), and metal or alloy is poured into the ceramic mold.
  • vacuum vacuum
  • the ceramic mold is released from the casting by direct physical force (e.g.
  • I vestment casting involves producing a master pattern, forming a master die
  • a mold or mould (alternatively referred to as a mold or mould) based on the master pattern, producing a secondary pattern (which can be made of wax, polymers, frozen mercury, or other materials known in the industry) based on the master die.
  • the secondary pattern which can be combined with other secondary patterns, is then used as the base for an investment which is formed by coating, stuccoing, and hardening a ceramic around the secondary mold, thereby forming a ceramic mold.
  • the coating, stuccoing, and hardening cycle is repeated as necessary until the ceramic mold is of desired dimensions.
  • the ceramic mold can then be dried and/or heated to remo ve traces of the secondary pattern material remaining on the ceramic mold and to sinter the ceramic mold.
  • the ceramic mold can then be used for casting according to the vacuum process disclosed herein.
  • Embodiments of the present disclosure can impro ve the throughput, production, and yield for casting metals, alloys, or superalloys in ceramic molds through a vacuum induction process, in particular, a vacuum induction process can use a furnace having a melt chamber with two (2) melt boxes.
  • Furnace melt chambers as known in the industry typically have a single melt box per melt chamber, due to restrictions of size, melt box shape, and apparatus for tilting or moving the melt box within the melt chamber, in aspects, a furnace of the present disclosure utilizes two independent melt box and crucible tilt assemblies within a single melt chamber, where both melt boxes cast into molds received from a single mold loading chamber. This design can provide advantages including, but not limited to: providing flexibility and
  • the configuration of a furnace having two melt boxes within a single melt chamber of the furnace increases the output of the furnace while retaining essentially the same footprint of space of the furnace.
  • the melt chamber of the furnace is mechanically coupled to the loading chamber, with an isolation valve connecting the two chambers.
  • the melt chamber and loading chamber can be arranged vertically relative to each other, where an elevator within the loading chamber can lift or otherwise move a. mold into a casting position below the melt boxes of the melt chamber.
  • the melt chamber and loading chamber can be arranged horizontally relative to each other, where a platen can shift, slide, or otherwise move a mold into a casting position below the melt boxes of the melt, chamber.
  • the throughput of the furnace is increased in part because the duration of time required to melt a charge of alloy is longer than the time required to load an investment, in a loading chamber of the furnace, and longer than the time required to pour molten alloy into an investment.
  • Superalloys are generally based on Group VIIIB elements and usually consist of various combinations of iron (Fe), nickel (Ni), cobalt (Co), and chromium (Cr), as well as lesser amounts of tungsten (W), molybdenum (Mo), tantalum (Ta), niobium (Nb), titanium (Ti), hafnium (Hi), or aluminum (A!). Additionally, other elements can be used in superal loys as grain boundary components, including boron (B), carbon (C), calcium (Ca), magnesium (Mg), and zirconium (Zr).
  • a furnace according to the present disclosure can cast components made of metals, alloys, or superalloys, where in some aspects the superalloys case can include, but are not limited to: nickel-chromium alloys, iron-based alloys, cobalt-based alloys, zirconium-doped alloys, magnesium-doped alloys, and the like.
  • Molds used in conjunction with the vacuum induction melting and casting system may have many different possible shapes depending upon the articles desired to be cast. The mold may be shaped for semi-continuous ingot production. In this case, the mold may have an open top and bottom.
  • any number of molds may be moved into and out of the casting position through a withdrawal port in a sequential fashion.
  • any suitable closed- or open- bottom mold may be used.
  • the moid may be shaped to create a specific part or parts or any preformed shape which can be converted i to a part or parts.
  • the mold may have an open top and closed bottom.
  • FIG, 1 is a. flowchart illustrating a process for casting a metal or alloy moid in combination with a dual melt box melt chamber.
  • the flowchart represents a portion of an investment casting process, specifically a furnace casting cycle, during which a ceramic mold is used to cast an alloy in a controlled atmospheric environment, which in some aspects can be the casting of a superalloy.
  • a control system can be coupled with the furnace, specifically in electronic communication with sensors (such as temperature sensors) and actuating elements (such as chamber doors, tilting assemblies, or elevators) located within the furnace.
  • the control system can include a non-transitory computer-readable medium and microprocessors configured in part to receive and/or process data from sensors located within the furnace.
  • control system can further include a user interface to allow for an operator to monitor and/or alter the function of the furnace.
  • control systems can include computer- executable instructions or algorithms to actuate mechanical elements within the furnace to control a casting process.
  • the control unit can further be electronically coupled to other, local or remote, non-transitory computer-readable mediums (not shown) to transmit or receive data or operational in struc ti ons .
  • two ceramic casting molds are used for each furnace casting cycle, and while the two casting molds can be identical, for any given casting cycle the casting molds are referred to as an initial casting mold and a subsequent casting mold.
  • an initial casting mold is pre-heated in a preheating oven external to a furnace loading chamber.
  • the initial casting mold can be formed by investment casting or by other means known in the industry.
  • the initial casting mold can be pre-heated to a temperature of about 800°C to about 5 ,000°C, preparing or heat-priming the ceramic mold to receive molten alloy at temperatures at or about 800°C to about 1 ,000°C or greater.
  • heat- priming a ceramic mol d can increase the structural quality of the casting ultimately formed from the molten alloy poured into the mold, in part due to a reduction in any thermal shock to the casting or formation effects potentially resulting from a relatively steep temperature gradient at the interface between the molten alloy and ceramic casting.
  • the initial casting mold is transferred to and placed within a loading chamber (also referred to as a mold chamber) of a furnace.
  • the pressure of the loading chamber is reduced from atmospheric pressure, which can be accomplished by either or both of a. mechanical vacuum pump and a diffusion pump connected to the loading chamber.
  • the loading chamber can have its internal pressure reduced to about one hundred millitorr (100 mTorr),
  • the melt chamber of the furnace can be prepared and an alloy can be melted for casting.
  • charges of one or more alloys are loaded into dual melt boxes of a melt chamber.
  • the charges of alloys can be of the same alloy, of similar alloys with different ratios of component metals, or of different alloys.
  • the pressure of the melt chamber is reduced from atmospheric pressure, which can be accomplished by either or both of a diffusion pump and a mechanical vacuum pump connected to the melt chamber.
  • the melt chamber can have its internal pressure reduced to about five millitorr (5 mTorr).
  • the temperature in the m elt, chamber is elevated such that the charges of alloy in both the first melt box and the second melt box within the melt chamber are rendered into molten alloy.
  • the melt chamber can be elevated to any given temperature necessary to melt a given alloy.
  • the melt chamber can be elevated to a temperature of about 5 ,300°C or greater.
  • melting the charges of alloy in the melt chamber can take from about five to ten minutes (5- 10 min).
  • the charges of alloy are raised to a temperature above the melting temperature of the al loy, but not above the boiling temperature of the alloy. (In the industry, raising an alloy to such a temperature can be referred to as "superheating"; this is not an accurate usage of term according to the traditional physics definition of superheating as related to boiling retardation or boiling delay.)
  • each melt box can have an independent tilt assembly, which can operate independently of each other or in concert with each other, in other aspects, the melt boxes can share a single tilt assembly that can incline each melt box independently in an alternating or sequential order.
  • the tilt assembly or tilt assemblies for each of the melt boxes can be positioned on the same side of the melt chamber, allowing for access to the tilt assembly or tilt assemblies in melt chamber from a single access point, and providing for efficient removal, replacement, or maintenance of the tilt assembly or tilt assemblies.
  • an isolation valve (which in some aspects can be a flapper valve) is opened thereby placing the loading chamber and melt chamber in communication with each other.
  • the pressure between the loading chamber and melt chamber can balance to an equilibrium.
  • the initial casting mold can be moved to a casting position by a loading mechanism.
  • the melt chamber and loading chamber can be arranged vertically relative to each other, where the movement of the initial casting mold can be with an elevator mechanism, lifting the initial casting mold up into the melt chamber to a casting position, from the loading chamber.
  • the melt chamber and loading chamber ca be arranged horizontally relative to each other, where a platen mechanism can shift, slide, or otherwise move a mold into a casting position below the melt boxes of the melt chamber.
  • Both the first, melt bo and the second melt box can be configured and arranged to tilt, and pour at the same casting position.
  • molten alloy from one of the first melt, box or the second melt box is poured into the initial casting mold.
  • Each of the first melt box and the second melt box has an individual tilting crucible to accomplish the pouring action, in some aspects, the pouring of the molten alloy at step 1 16 can take from about two to three seconds ( ⁇ 2-3 sec).
  • the amount of time required to place a ceramic mold in the loading chamber (step 102), evacuate the loading chamber atmosphere (step 104), open the isolation valve (step 1 12), position the ceramic mold at the casting position (step 1 14), and pour the molten alloy into the ceramic mold (step 1 16) can take about forty-five seconds (-45 sec).
  • the initial casting mold, now holding the casting of molten alloy is withdrawn from the casting position and withdrawn from the melt chamber.
  • the isolation valve between the melt chamber and the loading chamber is closed.
  • the loading chamber is returned to atmospheric pressure, which in some aspects can talve about thirty seconds (30 sec).
  • the initial casting mold with the cast alloy is removed from the loading chamber.
  • the casting is allowed to cool and solidify at atmospheric pressure.
  • the casting can have an equiaxed grain structure, such that the grains of the metal can have an approximately equal size and be randomly oriented in all directions across and through the casting.
  • a determination can be made if at least one of the melt boxes in the melt chamber still holds a charge of alloy, where the charge can be either in a molten or solid state.
  • a second casting can be made before reloading the melt boxes and proceeding though a further melt chamber heating cycle. Accordingly, if at lea st one of the melt boxes in the melt chamber still holds a charge of alloy, the process returns to step 102, taking a subsequent pre -heated casting mold for use in the process.
  • the process can return to step 100 and pre- heat a new ceramic mold in the external pre-heating oven.
  • the subsequent casting mold is placed in the loading chamber at step 102, the loading chamber is again evacuated with a vacuum system at step 1 04, and, if needed, the charge of alloy remaining in the loading chamber is melted to a molten state.
  • the isolation valve between the loading chamber and the melt chamber is again opened at step 1 12.
  • the subsequent casting mold is moved to a casting position at, step 1 14.
  • the molten alloy from, whichever of the first melt box and the second melt, box still holds molten alloy is poured into the subsequent casting mold.
  • the subsequent casting mold now holding the casting of molten alloy, is withdrawn from the casting position and withdrawn from the melt chamber.
  • the isolation valve between the melt chamber and the loading chamber is closed.
  • the loading chamber is returned to atmospheric pressure.
  • the subsequent, casting mold with the cast alloy is removed from the loading chamber, and the casting is allowed to cool and solidify at atmospheric pressure.
  • melt boxes can be reloaded (or
  • the selection of which melt box to use at step 1 16 for an initial casting mold can be based on a programmable selection process, operator control, or the sensed or calculated temperature at a region of the melt chamber, in some aspects, the melt box used for the initial casting mold can alternate between furnace casting cycles. In other aspects the same melt box can be used for each initial casting mold for each furnace casting cycle.
  • step 126 if neither of the melt boxes in the melt chamber still holds a molten charge of alloy, the process proceeds to step 128, ending the furnace casting cycle. Continuing the production of castings with further furnace casting cycles requires reloading the melt boxes with alloy charges, and requires another duration of time to melt the alloy charges into molten form for pouring into further ceramic molds.
  • FIG. 2 is a schematic diagram of a connected mold chamber and melt chamber coupled with an atmospheric and vacuum control system.
  • a melt chamber 202 is coupled to a mold chamber 204 (i.e. the loading chamber) via an isolation valve 206.
  • the melt chamber has a door through which alloy charges can be loaded into one or more melt boxes within the melt chamber 202.
  • the mold chamber 204 has a door through which ceramic casting molds can be loaded.
  • the melt chamber 202 is coupled to a first vacuum system which can include a poppet valve structure 208 and a diffusion pump 2 0, which when active operates to reduce the pressure in the melt chamber 202 below atmospheric pressure.
  • the mold chamber 204 is coupled to a first vacuum, system 212, which can include a dry pump and a blower, and when active operates to reduce the pressure in the mold chamber 204 below atmospheric pressure.
  • the melt chamber 202 can be further coupled to a first venting system 214, which can open and return the melt chamber 202 to atmosphere.
  • mold chamber 204 can be further coupled to a second venting system. 216, which can open and return the mold chamber 204 to atmosphere.
  • a holding pump 21 8 and a melt chamber pumping package 220 can be further coupled to the poppet valve structure 208 and diffusion pump 210. Either or both of the holding pump 218 and melt chamber pumping package 220 are arranged as backing, or upstream in series with, the diffusion pump 210.
  • a horizontal bar feeder 222 can deliver alloy charges into the melt chamber 202, and in some embodiments more than one horizontal bar feeder 222 can be coupled to the melt chamber 202.
  • a charge temperature sensor system 224 is coupled with the melt chamber 202 and configured to measure the temperatures of the molten charge in each melt box.
  • a mold temperature sensor system 226 is coupled with the melt chamber 202 and configured to measure the temperature of the moid cast within the melt chamber. Both of the charge temperature sensor system 224 and mold temperature se sor system 226 can be electronically coupled with a control system to relay temperature data to an operator or processing device.
  • a control system 228 can be located proximate or remote to the overall mold chamber, melt chamber, and vacuum system apparatus.
  • the control system 228 can be electronically and operationally coupled to the controllable systems of the apparatus, and further provide a user interface for control by an operator.
  • the control system 228 can include a non- transitory computer-readable medium and microprocessors configured in part to receive and/or process data from sensors located within the furnace.
  • FIG, 3 is a schematic diagram of a furnace system. 300 having a connected melt chamber 302 and mold chamber 304. As illustrated, the melt chamber 302 is positioned above the mold chamber 304. Horizontal bar feeders 306, 306' ca couple and feed into the melt chamber 302, providing alloy charges to be loaded into the two melt boxes 308, 308' within the melt chamber 302. In some aspects, isolation valves melt boxes 307, 307' can be provided between the horizontal bar feeders 306, 306' and the melt boxes 308, 308', respectively, in many aspects, each of the melt boxes 308, 308' have a tilting crucible aligned to pour molten alloy at a casting position 316.
  • a withdrawal assembly 350 can be positioned below a casting mold support 312, where the withdrawal assembly 310 is an elevator that can move the casting mold support 312 up through an isolation or flapper valve 314 into the melt chamber 302.
  • the withdrawal assembly 310 can positi on the casting mold support 312 at a castin g positi on 316 where both of the melt boxes 308, 308' can pour into (at different times).
  • the withdrawal assembly 31 0 can retract from the melt chamber 302 and through the isolation or flapper valve 314.
  • the casting mold support 312 can be positioned next to a mold cooling port 31 8 where a casting and casting mold can be taken out of the moid chamber 304.
  • the mold chamber 304' is shown with the flapper valve 314' in positions at and in between an open configuration and a closed
  • a poppet valve and diffusion pump assembly 322 (otherwise located in a position occluded by the furnace system 300 in FIG. 3), which is coupled to and in communication with the furnace system 300. As shown, the poppet valve and diffusion pump assembly 322 is presented to show the relative size of the poppet valve and diffusion pump assembly 322 as compared to the melt chamber 302 and connected operational components.
  • melt boxes can be arranged within a single melt chamber, further increasing the throughput of casting of the furnace system.
  • four or more melt boxes can be arranged within a single melt chamber, further increasing the throughput of casting of the furnace system.
  • the furnace system including the temperature and atmospheric controls for both the melt chamber and the mold chamber can be electronically coupled with an instrumentation interface with sensors and gauges to measure sensory data in the furnace system.
  • an instrumentation system and interface can be electrically coupled to a microprocessor (or other such non-transitory computer readable mediums) by wires or by wireless means, and thereby send imaging data signals to the microprocessor.
  • the coupled microprocessor can collect sensory data from the furnace and can further relay collected information to other non-transitory computer readable mediums, and/or run calculations on collected data and relay the calculated result to a user-operable and/or user-readable display.
  • the sensory data captured by the furnace system can be evaluated according to computer program instructions controlling the
  • microprocessor (either through hardware or software) to analyze or base calculations on specific sensory data and in some aspects adjust the temperature or pressure controls according to processing parameters.
  • an operator can monitor sensory data and manually adjust temperature or pressure controls according to processing parameters
  • the instrumentation which can include a microprocessor can further be a component of a processing device that controls operation of the instrumentation, in particul ar, the thermal or pressure set points for melting and casting parameters of the furnace.
  • the processing device can be communicatively coupled to a non-volatile memory device via a bus.
  • the non-volatile memory device may include any type of memory device that retains stored information when powered off " .
  • Non-limiting examples of the memory device include electrically erasable programmable read-only memory ("ROM”), flash memory, or any other type of non-volatile memory.
  • at least some of the memory device can include a non-transitory medium or memory device from which the processing device can read instructions.
  • a non- transitory computer-readable medium can include electronic, optical, magnetic, or other storage
  • Non-limiting examples of a non-transitory computer-readable medium include (but are not limited to) magnetic disk(s), memory chip(s), ROM, random-access memory (“RAM"), an ASIC, a configured processor, optical storage, and/or any other medium from which a computer processor can read instructions.
  • the instructions may include processor- specific instructions generated by a compiler and/or an interpreter from code written in any suitable computer-programming language, including, for example, C, C++, C#, Java, Python, Perl, JavaScript, etc.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

L'invention porte sur un système de four pour la fusion et la coulée de métaux, d'alliages et de superalliages et sur un procédé s'y rapportant. Une chambre de fusion du système de four est conçue et agencée de manière à comprendre au moins deux caissons de fusion, ce qui permet d'augmenter le volume de charge d'alliage qui peut être amenée à être fondue pendant un seul cycle de chauffage de four. En conséquence, un certain nombre de moules de coulée en céramique égal au nombre de caissons de fusion peuvent être utilisés pour former des pièces coulées à la suite d'un seul cycle de chauffage du four. Les moules de coulée en céramique peuvent être préchauffés dans un four externe avant d'être introduits dans le moule ou la chambre de chargement du système de four. La capacité de production du système de four est augmentée par la capacité de verser plus d'une coulée par cycle de fusion de charge d'alliage.
PCT/US2015/038065 2014-10-30 2015-06-26 Fusion et coulée par induction sous vide double WO2016069064A1 (fr)

Priority Applications (2)

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JP2017521227A JP2017533099A (ja) 2014-10-30 2015-06-26 二重真空導入溶融および鋳造
EP15856007.8A EP3212353A4 (fr) 2014-10-30 2015-06-26 Fusion et coulée par induction sous vide double

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US201462072635P 2014-10-30 2014-10-30
US62/072,635 2014-10-30

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WO2016069064A1 true WO2016069064A1 (fr) 2016-05-06

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CN118080843A (zh) * 2024-04-26 2024-05-28 兴化市顺杰高温合金制品有限公司 一种高温合金连续铸造装置

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EP3212353A4 (fr) 2018-06-13
EP3212353A1 (fr) 2017-09-06
US20160121394A1 (en) 2016-05-05
JP2017533099A (ja) 2017-11-09

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