Abstract: The present invention relates to a casting mold for a metal sheet by drawing molten metal into a mold cavity and cooling the molten metal, and the casting mold according to the present invention includes: a support portion at an upper side on which molten metal is disposed or a solid metal is placed and melted; a mold cavity at a lower side in which the metal sheet is formed as the molten metal is drawn from the support portion while filling the mold cavity and cooled; and a passageway through which the molten metal is drawn into the mold cavity from the support portion, in which the mold cavity includes a first surface at the upper side which communicates with the passageway, and a second surface at the lower side which faces the first surface, a plurality of suction portions for drawing the molten metal are formed in the second surface and extended downward from the second surface, the suction portions are connected to a vacuum source and configured to draw the molten metal by suctioning air from the mold c

Abstract: Disclosed is a continuous rapid solidification apparatus, which has a cooling roll configured to cool a molten metal supplied to an outer circumference surface thereof; a crucible configured to supply the cooling roll with the molten metal; a molten metal supply configured to melt a raw material metal and supply the crucible with the molten metal; a first chamber configured to form a sealed space where the molten metal supplied from the crucible is cooled by the cooling roll; and a second chamber configured to be formed of a space separated from the first chamber and to form a sealed space where the molten metal is supplied to the crucible by the molten metal supply.

Abstract: Provided are a heating apparatus configured to generate a coating vapor for coating a base metal (steel sheet) which is continuously transferred in a vacuum state, and a coating device including the heating apparatus. A coating material to be converted into a coating vapor is initially supplied in a solid phase (solid state) and then phase changed into a liquid (liquid state). Thereafter, the liquid-state coating material is supplied to a heating unit, thereby preventing problems such as equipment erosion occurring when a liquid coating material is directly supplied and preventing the decrease of the temperature of a coating material when a solid wire is supplied as a coating material. As a result, the energy efficiency of the heating apparatus may be maximized.

Abstract: The present invention provides a method for casting a slab having a good cast surface. The method includes heating the surface of molten metal on a metal inlet side of a mold by a first heat source so that the following formulas: q?0.87 and c?11.762q+0.3095 are satisfied where c is a cycle time [sec] of turning movement of the first heat source, and q is an average amount of heat input [MW/m2] determined by accumulating an amount of heat input applied by at least the first heat source to the contact region between the upper surface of the slab on the metal inlet side and the mold, along the path of turning movement of the first heat source, and dividing the resultant accumulated value by the cycle time c.

Abstract: The present invention provides a method for casting a slab with good cast surface quality. The method includes pouring molten metal 8 into a mold 2 from one of the paired shorter sides of the mold 2 while allowing superheat ?T [° C.], which is a temperature difference obtained by subtracting the melting point Tm [° C.] of the raw material from the temperature Tin [° C.] of the molten material on the surface of the molten metal in the mold and at the pouring point of the molten metal, to satisfy the following Formula (1) and Formula (2): 0.0014?T2 +0.0144?T+699.45>800 ??Formula (1) 0.0008?T2 +0.2472?T+853.

Abstract: An apparatus for melting an electrically conductive metallic material includes a vacuum chamber and a hearth disposed in the vacuum chamber. At least one wire-discharge ion plasma electron emitter is disposed in or adjacent the vacuum chamber and is positioned to direct a wide-area field of electrons into the vacuum chamber, wherein the wide-area electron field has sufficient energy to heat the electrically conductive metallic material to its melting temperature. The apparatus may further include at least one of a mold and an atomizing apparatus which is in communication with the vacuum chamber and is positioned to receive molten material from the hearth.

Abstract: A continuous casting method in which a molten metal obtained by melting titanium or a titanium alloy is injected into a bottomless mold having a rectangular cross-section and withdrawn downward while being caused to solidify, wherein a plasma torch (7) is caused to rotate in the horizontal direction above the surface of the molten metal (12) in the mold (2), and a horizontally rotating flow is generated by electromagnetic stirring on at least the surface of the molten metal (12) in the mold (2). It is thereby possible to cast a slab in which the casting surface condition is excellent.

Abstract: A die casting system includes a die, a shot tube, a melting system and a vacuum system. The die includes a plurality of die components that define a die cavity. The shot tube is in fluid communication with the die cavity and is operable to deliver a charge of material to the die cavity. The melting system is positioned adjacent to the die and includes an alloy loader, a melting unit and a crucible. The vacuum system defines a first chamber and a second chamber separated from the first chamber by an isolation valve. The melting system is disposed within the first chamber, and the die is disposed within the second chamber.

Abstract: Exemplary embodiments described herein relate to methods and systems for casting metal alloys into articles such as BMG articles. In one embodiment, processes involved for storing, pre-treating, alloying, melting, injecting, molding, etc. can be combined as desired and conducted in different chambers. During these processes, each chamber can be independently, separately controlled to have desired chamber environment, e.g., under vacuum, in an inert gas environment, or open to the surrounding environment. Due to the flexible, independent control of each chamber, the casting cycle time can be reduced and the production throughput can be increased. Contaminations of the molten materials and thus the final products are reduced or eliminated.

Abstract: The invention relates to a vacuum die-casting system and a method for operating a vacuum die-casting system.

Abstract: A die casting device includes a die including a cavity; an injection sleeve including a feeding orifice; an injection tip provided at the distal end of a support shaft, and configured to be slidable in an axial direction within the injection sleeve by inserting the support shaft into the injection sleeve; a decompression device; a molten-metal holding furnace including a space to store molten metal; a pump pumping up the molten metal from the molten-metal holding furnace; and a feeding pipe including a first end connected to the pump and a second end. The feeding pipe is joined to the injection sleeve through a relay pipe including a vibration absorption portion, the molten metal is fed into the injection sleeve from the molten-metal holding furnace through the feeding pipe by the pump, and is pushed out of the injection sleeve by the injection tip, and the molten metal is injected into the cavity decompressed by the decompression device.

Abstract: A system for producing cast components from molten metal. One form of the present invention includes a system for the precision pouring of molten metal within a casting mold. The precision pouring system is driven by a pressure differential.

Abstract: An apparatus and process are provided for casting liquid metals into molds in a casting furnace comprising a controlled environment melt chamber and a mold lock chamber. A mold is supplied to the controlled environment melt chamber for a pour, and removed from the same chamber via a mold lock chamber. A mold transport system moves the mold through the mold lock chamber. The mold transport system comprises a rotary screw drive, a cylinder screw drive, or hydraulic drive located external to the furnace. Alternatively the mold transport system comprises a rack and worm screw drive.

Abstract: A system for producing cast components from molten metal. One form of the present invention includes a system for the precision pouring of molten metal within a casting mold. The precision pouring system is driven by a pressure differential.

Abstract: A system for producing cast components from molten metal. One form of the present invention includes a system for the precision pouring of molten metal within a casting mold. The precision pouring system is driven by a pressure differential.

Abstract: A system for producing cast components from molten metal. One form of the present invention includes a system for the precision pouring of molten metal within a casting mold. The precision pouring system is driven by a pressure differential.

Abstract: A system for producing cast components from molten metal. One form of the present invention includes a system for the precision pouring of molten metal within a casting mold. The precision pouring system is driven by a pressure differential.

Abstract: An apparatus and process are provided for casting liquid metals into molds in a casting furnace comprising a controlled environment melt chamber and a mold lock chamber. A mold is supplied to the controlled environment melt chamber for a pour, and removed from the same chamber via a mold lock chamber. A mold transport system moves the mold through the mold lock chamber. The mold transport system comprises a rotary screw drive, a cylinder screw drive, or hydraulic drive located external to the furnace. Alternatively the mold transport system comprises a rack and worm screw drive.

Abstract: The present invention relates to a die casting machine. A molten metal (melted liquid) is supplied into a evacuated casting space that is formed by a combination of a movable mold and a fixed mold. The molten metal is first moved in a horizontal direction along a molten metal injection pipe and is then injected into a chamber located at the bottom of the casting space. Thereafter, the molten metal is moved in a vertical direction by means of a follower plunger and is then inserted into the casting space. Therefore, since occurrence of a turbulent flow of the molten metal injected into a mold is prevented, a product of a high quality with no minute bubbles can be obtained.

Abstract: A diecast machine comprises: a sleeve extending in the vertical direction; a plunger moving upward in the vertical direction inside the sleeve; a mold disposed above an upper side of the sleeve; a case member constituted of a nonconductive member, which covers at least a lower end of the sleeve and forms a closed space including the lower end of the sleeve; a communicating pipe connecting the inside of the closed space to the outside of the closed space; and high-frequency induction coil configured to heat metal material disposed on the plunger from the outside of the case member and melt the metal material.

Abstract: A casting furnace for use in melting and molding metals. The furnace has a mold insertion and withdrawal system attached thereto and incorporates an offset mold elevator for moving a mold up and down from a mold chamber to a furnace chamber while eliminating the need for a pit. The furnace further includes a readily removable chill plate on which the mold rides. An overhead material feed system is also provided.

Abstract: A casting furnace for use in melting and molding metals. The furnace has a mold insertion and withdrawal system attached thereto and incorporates an offset mold elevator for moving a mold up and down from a mold chamber to a furnace chamber while eliminating the need for a pit. The furnace further includes a readily removable chill plate on which the mold rides. An overhead material feed system is also provided.

Abstract: A method for casting of metal articles using external pressure and having particular application to lost foam casting of metal articles. A polymeric foam pattern having a configuration corresponding to an article to be cast is placed in an outer flask and the pattern is connected through a polymeric foam gating system to a pouring cup located at the upper end of the flask. The pouring cup has a volume equal to 5% to 75% of the combined volume of the gating system and the pattern. A finely divided inert material, such as sand, is placed in the flask surrounding the pattern and fills the internal cavities within the pattern. The flask containing the pattern is then positioned in an outer pressure vessel having a removable lid and a molten metal is fed into the pouring cup.

Abstract: The vacuum induction melting system is designed to be operated in a continuous or semi-continuous manner for extended periods of time for increased efficiency, and makes it possible to easily and quickly remove the induction furnace from the melt chamber when it becomes necessary to replace and rebuild the furnace. The melting system includes a melt chamber which forms an airtight enclosure, with an induction furnace located within the melt chamber. A charging chamber is communicatively connected to the melt chamber adjacent its upper end. The charging chamber includes a door providing access to the interior of the charging chamber so that a charge of raw materials can be placed therein. An isolation valve is located between the melt chamber and the charging chamber and is movable between open and closed positions.

Abstract: An improved apparatus for producing unidirectionally solidified components over wide range of shapes and sizes from the smallest aero-engine turbine parts to the largest industrial gas turbine parts with improved quality and productivity where a chill block is equipped with a seed crystal ejector mechanism inserts seed crystals into shell mold at the instant of melt pouring and where an intermediate melt pouring funnel indexing device facilitates smooth pouring of melt in instalments in order to cast large and tall directionally solidified castings in relatively thin walled mold at faster mold withdrawl rate with finer and better metallurgical structure and higher production rate than the prior art.

Abstract: A vacuum induction melting system includes a melt chamber which forms an airtight enclosure, with an induction furnace located within the melt chamber. A mold tunnel is connected to the melt chamber adjacent its lower end, with the mold tunnel including a pour opening which communicates with the melt chamber and through which molten metal poured from the furnace can enter the mold tunnel. A mold carriage is positioned within the mold tunnel for receiving and carrying one or more molds adapted for receiving molten metal. An isolation valve is located between the melt chamber and the mold tunnel for isolating the mold tunnel from the melt chamber to allow for removing the mold carriage from the mold tunnel for loading or unloading of molds thereon. A mold transport assembly is provided for moving the mold carriage from a pouring position within the mold tunnel to a loading position located outside of the mold tunnel.

Abstract: For the production of precision cast objects a gas change method is used. A melting crucible (1) and a casting mold (2) with at least partially porous walls are disposed in a gastight receptacle (5). The casting mold (2) with the mold cavity (3) is evacuated before the pouring-in process and subsequently flushed with a light gas, for example helium. After the mold cavity (3) is filled, the surface level (18) of the melt in the casting mold (2) is acted upon by a second heavy gas, for example argon, and subjected to excess pressure. A better degree of filling of the mold cavity (3) and an improved structure of the cast object results.

Abstract: A gas permeable ceramic investment mold is disposed in a casting chamber and filled with melt to be solidified via a mold melt inlet, such as for example a mold pour cup adapted to receive the melt from a melting crucible in the casting chamber. After the melt is cast into the hot investment mold in the vacuum casting chamber, a pressure cap is positioned in sealing engagement with the mold melt inlet, and gas pressure is introduced through the pressure cap to provide selective or local gas pressure on the melt in the mold without pressure cracking or other damage to the relatively fragile investment mold, while the casting chamber is maintained under relative vacuum or a different pressure from that in the mold.

Abstract: A metal or alloy is melted in a vaccuum chamber disposed about an end of a shot sleeve. The opposite end of the shot sleeve is communicated to a die cavity between first and second dies which are disposed in ambient air atmosphere. The dies have one or more vacuum seals therebetween extending about the die cavity to isolate the die cavity from the ambient air atmosphere when the dies are closed. A vacuum thereby is provided in the die cavity through the shot sleeve when the vacuum chamber is evacuated despite the dies being disposed in ambient air atmosphere. The first and second dies are opened after the metal or alloy is die cast in the die cavity for ready removal of the cast component from the die cavity directly to the ambient air atmosphere and then to an optional quenchant medium proximate the dies.

Abstract: Mold heating vacuum casting furnace system comprising a mold preheating chamber located above and connected to a vacuum casting chamber via an intermediate isolation valve. A mold elevator is provided in the casting chamber and can be moved into the mold preheating chamber to lower the mold onto an annular rotary chill member residing in the casting chamber. The elevator includes an upstanding elevator shaft that moves in the opening of the annular chill member in a manner that the preheated mold is deposited or set on the annular chill member as the elevator is lowered into the casting chamber. The chill member includes an upwardly diverging mold engaging surface onto which the preheated mold is set by the elevator as it is lowered.

Abstract: A system for die casting including a die having a die cavity. There is also a vacuum chamber and a device for creating a vacuum in the vacuum chamber. The die casting system further includes an injection device for introducing a fluidically based material, such as molten metal, into the die cavity from the vacuum chamber. The injection device is in fluidic communication with the die cavity and is at least partially disposed within the vacuum chamber. The die casting system also includes a device for providing the fluidically based material into the injection device. The providing device is separated from the injection device and is preferably disposed within the vacuum chamber. A method of die casting includes the step of providing, such as by pouring, fluidically based material into an injection device within the vacuum chamber. Then, there is the step of forcing the fluidically based material into the die cavity with the injection device.

Abstract: Metal is melted in an induction-heated crucible (13) on which a mold (10) with a downward-facing filling opening (26) is located in the melting position. After melting the metal, the crucible (13) and the mold (10) are jointly rotated about a horizontal axis (A--A) into a tilting position in which the molten material flows from the crucible (13) into the mold (10). In order to melt reactive metals, melting is done in a crucible (13) that is surrounded by a vacuum, this crucible being surrounded by an induction coil (15) outside of the vacuum. The mold (10) is located in a vacuum-sealed casting chamber (6) which is evacuated together with the crucible (13) prior to melting and casting is carried out by a joint tilting of the crucible (13), casting chamber (6) and mold (10) by at least 180 degrees while the vacuum is maintained.

Abstract: A levitation melting method and device through which a material having various configurations can be melted through efficient induction heating. First, a starting material(WB), whose outer diameter has been adapted to the inner diameter of a crucible(13), is inserted in crucible(13). The crucible(13) is shielded with argon gas, thereby starting the melting of the material(WB) to molten metal(WM). Subsequently, a suction tube(33) of a mold(31) is inserted into the molten metal(WM) for drawing a part of molten metal(WM) up into the mold(31) for casting. After part of the molten metal(WM) is drawn up, a sliding cover(15) is slid such that a material holder(19) is positioned right above the crucible(13). By opening a sliding plate(35) of the material holder(19), material pieces(WS) are inserted from the material holder(19) into the molten metal(WM) left in the crucible(13).

Abstract: A casting conduit (5) is attached at a low-level location to a completely sealable furnace (1) for a casting material (2). At this connection, the furnace is provided with an outlet opening (4) which is capable of being closed by a shutter (3). The casting conduit (5) leads down to a mold chamber (6) in which the mold (7) is located. The casting conduit (5) is closed, e.g. in the manner of a tube, and can be connected by a vacuum connection (8) to a vacuum installation together with the mold chamber (6). When the vacuum in the furnace (1) and in the casting conduit (5) resp. the mold chamber (6) is equivalent, the outlet opening (4) can be opened by means of the shutter (3), and the casting material (3) can flow into the mold chamber (6) and into the mold (7) via the casting conduit (5).

Abstract: A furnace chamber (2) has a lock (14) provided with two sealing plates (18, 22), a melting furnace (3), and a casting mold carrier (25), which can be moved horizontally through the lock (14) in the horizontal direction into a casting position (34) in the furnace chamber. An outer sealing plate (22) is mounted on a first truck (21), carrying a first rail segment (23) for a second truck (24) on the other side of the sealing plate (22), the casting mold carrier (25) being mounted on this second truck. A horizontal drive (27) is used to move the second truck (24) with respect to the first (21), and in the interior of the furnace chamber (2) there is a second rail segment (32) to which the casting mold carrier (25) is transferred from the first rail segment (23). A heating chamber (8) can be raised and lowered above the casting position (34) in the furnace chamber, which is equipped with a filling hole (12) and with heating elements (35, 36, 37).

Abstract: A vacuum-assisted gravity pour casting apparatus (10) has a vacuum housing (12) with a fixed top portion (14) and a moveable bottom portion (16). A lower portion (80) of a filling vessel (62) extends through an opening (30) in the top portion (14) and seals the opening (30) against leakage. The bottom housing portion (16) is supported on a scissors-lift mechanism (48) which lowers and raises the bottom portion (16) to open and close the chamber (20) for cycling molds into and out of the chamber (20). A stopper rod (86) controls the flow of molten metal (M) through a bottom nozzle (70) and into the mold.

Abstract: Cast components having reduced porosity levels are produced by pouring a molten metal into a mould which is in a first chamber, and withdrawing the filled mould into a second chamber. The second chamber is then isolated from the first chamber with regard to pressure, and the second chamber is then pressurized with a fluid up to a maximum pressure of 7 MPa for at least part of the time required for solidification of the metal in the mould. The pressure is preferably applied within forty seconds from the finish of pouring of the molten metal, and more preferably within twenty seconds. The still molten state of the metal permits the use of a relatively low pressure to reduce the porosity levels.

Abstract: A process and apparatus for the repair of single-crystal drive blades, such as turbine blades, in which a sound portion of the blade is inserted into an open bottom of a casting mold in communication with a casting cavity in the mold adopted to the shape of the blade. The molten metal is then cast into the mold to unite with the sound portion and an epitaxial single-crystal solidification of the melt is produced on the sound portion to form the entire blade. A part of the sound portion has an outer surface layer thereof removed to expose a core region which is constituted of substantially pure single crystal material prior to casting. The sound part is secured in a holder which is coupled to the casting mold for only a matter of seconds before the molten metal is cast into the mold.

Abstract: A melting and casting plant for operation at least under a vacuum and having a vacuum chamber. A wall of the vacuum chamber of the plant is angularly fashioned and is composed of a stationary part and of a swivellable part, the swivellable part being hinged to the stationary part. A door (ingot mold door) is provided in the swivellable part. The shape of the chamber wall and a linking axis of the swivellable part are fashioned or arranged, such that, when the chamber is opened, articles situated in the interior of the chamber are readily accessible. In comparison to the prior art, improved operations of the system, particularly regarding the chamber, is possible.

Abstract: A mold table is linearly moved into a pouring position or a resting position in a vacuum casting unit and rotates around its vertical axis so that the ingot molds disposed on the mold table can be individually positioned in front of the pouring nose of a crucible. A flexible belt-type roller device, for example a roller chain 15 as used in the chain drive of a crawler, is guided around a rod-like carrier 13 disposed in direction F in the mold chamber, and a catch 16 is integrated into this flexible, belt-type device. A separate drive, preferably a rope drive, is provided for moving the apparatus 10, this drive being connected to the rotatable catch 16 generating the rotation of the mold table. All motors for linearly moving and rotating the mold table are disposed outside the vacuum chamber.

Abstract: This invention provides improved casting processes, equipment, and products. The invention is especially advantageous for die casting.

Abstract: Melting furnace (1) for the production of strand-cast ingots (17, 18) in a protective gas atmosphere, has a charging apparatus (8) for feeding starting material (11) into a melting area (14). Within a melting chamber provided with a chamber floor (2d) and at least one energy source (4,5) there is situated a strand-casting mold (15) for the transformation of the melt to an ingot (17, 18) and underneath the strand-casting mold is disposed an offbearing apparatus (25) for offbearing the ingot, and an offbearing chamber enveloping the ingot and the offbearing apparatus. To solve the problem of operating such a melting furnace virtually continuously, the strand-casting mold (15) together with at least one additional strand-casting mold (16) is disposed in the chamber flow (2d) in such a manner that each of the strand-casting molds (15, 16) can be brought into the drop path of the melt by a preferably horizontal relative movement.

Abstract: An apparatus for lost-wax castings wherein metal is melted in a vacuum vessel, and wherein there are provided vacuum pumps for producing a higher degree of vacuum around the mold during the casting of the molten metal.

Abstract: A method for melting and casting of metals and alloys and an apparatus using the method. The method consists of utilizing a compact assembly for melting and centrifugal casting of metals. The assembly includes a mold or chiller which is rotatable around a vertical axis. The mold communicates with a sealed lower housing containing an oven for the melting of the metal. The assembly is such that the interior chambers of both the oven and the mold are positioned in a vacuum during the entire time of the process of melting of the metal contained in the oven. The oven is movable vertically and is maintained in a position such that the lower extremity of a hollow vertical channel which feeds the mold, remains outside of the molten metal in the interior cavity of the oven when melting is occurring. Thus, the melting is accomplished entirely in a vacuum condition, thereby avoiding the formation of oxides or other chemical compounds.

Abstract: Metal material is melted by moving the magnetic flux of electromagnets virtually perpendicular to an arc column to apply Lorentz force to the arc column and the metal material so that the arc column can move over the metal material surface. The movement direction and speed of the arc column are determined by detecting the arc voltage of the arc column. Feed back control is performed by comparing the obtained detection data with preset data so that optimum control is performed, and the molten metal is poured into a casting mold.

Abstract: Apparatus for melting, casting and discharging a metal in a chamber. The apparatus includes a hopper outside of the furnace for delivering metal to a crucible inside of the furnace. The crucible pivots to pour molten metal into a mold which also pivots to pour solidified metal into a bin. The crucible, mold and bin are in a unitary chamber. Also provided is an improved electrode, crucible and mold.

Abstract: For the preparation of dental prostheses, a casting device with a controllable casting valve on the melting crucible includes a bell, which bell can be raised and lowered and to which pressure and/or vacuum can be applied and in which several molds can be located; different operating sequences can be selected by means of an electrical control unit and, for instance independently of the casting process, pressure or vacuum can be applied to, for example, a model.

Abstract: A melting and pressure casting device characterized in that it comprises a cylindrical electric heating means set in a closed chamber reducible and increasable in gas pressure, a vertically long crucible set in the heating means, a mold provided below the crucible and connected thereto, and an upper sprue communicating between the lower portion of the pouring cup and the sprue formed in the mold, wherein the melt for casting is held by its surface tension in the pouring cup and the melt thus held is poured under pressure by pressurizing the chamber into the mold through the upper sprue to thereby make a casting.

Abstract: A precision vacuum melting and casting furnace with a melting chamber containing a melting device. A casting chamber is positioned below the melting chamber. The casting chamber can be raised, lowered, and swung out to the side. The casting chamber communicates with the melting chamber through a valve chamber, which contains a vacuum valve. The valve chamber accommodates a lift platform for raising the mold up under the melting device. The casting chamber has a lifting mechanism, and the vacuum valve has an activating rod. In order to essentially simplify precise alignment of the different movable parts and to convert an existing conventional casting furnace into a furnace in accordance with the present invention, a hollow vertical shaft is attached to the valve chamber. The rod that activates the vacuum valve extends vacuum-tight through the shaft. A sleeve that guides the casting chamber is positioned at the outer surface of the shaft.

Abstract: An arc furnace and investment casting apparatus includes a copper base with an integrally formed crucible having a passage therethrough. A vacuum chamber is positioned on the top of the copper crucible with a non-consumable cathode projecting into the chamber to effect melting of metal placed in the crucible. A vacuum chamber is also suspended beneath the crucible for support of a mold to receive molten metal flowing through the passage.