Apparatus and method for producing a casting made of an amorphous or partially amorphous metal

Abstract

Device (1; 1a; 1b; 1c; 1d; 1e) for producing a cast part (36) made of an amorphous or partially amorphous metal, which comprises a casting mold (3; 3a; 3b; 3c; 3d; 3e) with at least one filling opening (16; 16a; 16b, 41; 16c; 16d; 16e) for introducing a casting material (15; 15a; 15b; 15c; 15d; 15e) forming the casting part (36), and a device for melting the casting material (15; 15a; 15b; 15c; 15d; 15e), the melting device having at least one region (13; 13; 13b; 41, 13c; 13d; 13e), which is provided for melting the casting material (15; 15a; 15b; 15c; 15d; 15e), and a means for forming at least one arc (30; 30a, 39) in the at least one melting region (13; 13; 13b; 40, 13c; 13d; 13e), wherein the means comprises at least two electrodes (32; 32a, 38; 32b; 32c) arranged at a distance from one another, between which the at least one arc (30; 30a, 39) can be formed, and one of the at least two electrodes (32; 32a, 38;32b; 32c) is at least partially formed by the casting material (15; 15a; 15b; 15c; 15d; 15e), characterized in that a casting piston (20; 20a; 20b; 20c; 20d; 20e), which is provided for introducing molten casting material (15; 15a; 15b; 15c; 15d; 15e) into a mold cavity (17; 17a; 17c; 17d; 17e) of the casting mold (3; 3a; 3b; 3c; 3d; 3e), and one of the at least two electrodes are arranged on the same side of the mold cavity in a gas-tight housing (2; 2a; 2c; 2d).

Description

[0001] The invention relates to a device for producing a cast part made of an amorphous or partially amorphous metal, which device comprises a casting mold with at least one filling opening for introducing a casting material forming the casting, as well as a device for melting a casting material. The melting device has at least one region provided for melting the casting material, and a means for forming at least one arc in the at least one melting region. The means comprises at least two spaced-apart electrodes between which the at least one arc can be formed, and one of the at least two electrodes is at least partially formed by the casting material. The invention further relates to a method for producing the casting.

[0002] Amorphous metals are metallic materials that do not solidify into crystalline forms. They are also known as metallic glasses and exhibit excellent mechanical properties due to their amorphous or partially amorphous structure.

[0003] From US 2007 / 0215306 A1 a device and a casting method for an amorphous metal are known, in which the metal to be cast is melted by an external inductive heating device arranged below the casting mold and is introduced into a two-part mold by a vertically movable casting piston guided in a sleeve.

[0004] From US 2015 / 0096967 A1, US 2016 / 0271689 A1 and JP 2000326065 A, die-casting processes and devices are known in which amorphous metals are inductively melted and pressed into a casting mold.

[0005] From DE 10 2015 220 766 A1 a thermoplastic forming process is known with which a metallic glass can be formed, wherein its heating takes place contact-free, preferably inductively.

[0006] DE 10 2010 027 802 A1 describes a method for producing metallic components with a partially amorphous structure using laser beam melting. However, a casting process is not disclosed.

[0007] DE 698 23 966 T2 shows a rolling process for producing a component made of a metallic glass, in which a metal material is melted by an arc.

[0008] In a device known from DE 41 16071 A1 and the associated method for casting dental metals, a blank containing titanium is melted by an arc and placed in a casting mold.

[0009] Devices and methods for producing castings from amorphous metals are also known from the prior art. For this purpose, a casting material is inductively heated in a crucible and pressed into a permanent mold through a filling opening using a die-casting process by means of a casting piston.

[0010] A disadvantage is that the use of a crucible can introduce impurities into the melt, which can cause crystallization during solidification. Advantageous mechanical properties are thus lost. Furthermore, inductive heating of the casting material in the so-called cold crucible process can only achieve a slight superheat of approximately 50 to 60°C above the melting temperature of the casting material. To ensure amorphous solidification, the casting material must preferably be heated to a temperature well above its melting temperature, in particular between 75 and 800°C.

[0011] The present invention is based on the object of creating a device for producing a casting made of an amorphous or partially amorphous metal, which device enables particularly high superheating of the casting material and easy processability.

[0012] According to the invention, the object is achieved in that a casting piston which is provided for introducing molten casting material into a mold cavity of the casting mold and one of the at least two electrodes are arranged on the same side of the mold cavity in a gas-tight housing.

[0013] In the melting area of the device, the casting material can be melted and superheated up to 800°C. The energy required for this can be introduced very precisely into the casting material, which can be in pellet form, for example. Surrounding areas or adjacent components of the device are advantageously not subjected to thermal stress. Furthermore, the casting material can be melted only immediately before being introduced into the casting mold. Conveying it from a furnace, during which the temperature of the melt can drop significantly, is not necessary. The high superheating possible with the device according to the invention also ensures that a cast part to be produced can solidify amorphously or partially amorphously, in particular predominantly amorphously.

[0014] The arc can extend from an electrode to the casting material, which is particularly in the form of a pellet and is to be melted, and / or be guided over the surface of the casting material. Advantageously, the energy required for melting is specifically introduced into the pellet, and surrounding areas are not subjected to thermal stress. If multiple areas are provided in which a casting material is to be melted, multiple electrodes can be provided, from each of which at least one arc extends to the casting material to be melted. It is also conceivable that multiple arcs are formed to melt a single, preferably pellet-shaped, casting material. Particularly high superheating and faster melting of the casting material are possible.

[0015] It is also conceivable that the casting material is melted by a laser and / or an electron beam.

[0016] If one of the at least two electrodes is at least partially formed by the casting material, the casting material does not need to be separately electrically contacted. This simplifies the manufacturing process.

[0017] In a further embodiment of the invention, the at least one melting region is incorporated into the casting mold. For this purpose, the melting region is preferably fluidically connected to a filling opening of the casting mold. Because an arc, a laser beam, and / or an electron beam is preferably used to melt the casting material, energy input is limited locally to the casting material. Thermal damage to the casting mold is excluded. Advantageously, the casting material can be melted and immediately introduced into the mold through the filling opening. A transport route from a distant melting region to the casting mold is eliminated.

[0018] If several melting areas are planned, several castings can be produced simultaneously using a single casting mold, for example.

[0019] It is also conceivable to provide multiple melting zones to fill a single mold cavity through multiple filling openings. This allows for the production of larger castings.

[0020] Conveniently, the at least one melting region comprises a particularly trough-like depression and / or a base-like elevation for receiving the casting material, and is preferably arranged at least partially around the at least one filling opening. The casting material can be placed on the base or introduced into the depression and melted. It is also conceivable to provide a depression that has a receiving base.

[0021] Because the filling opening is fluidically connected to the base and / or the recess, the molten casting material can be introduced directly through it into a mold cavity of the casting mold.

[0022] The casting material can, for example, be placed as a pellet onto the filling opening so that it is covered. Due to the high viscosity and / or high surface tension of a molten, amorphous or semi-amorphous solidifying metal alloy, the pellet retains its shape in the molten state and covers the filling opening until it is pressed in using a casting piston.

[0023] In one embodiment of the invention, the at least one melting region is delimited by an end face of the, in particular, cylindrical casting piston and an inner wall of a guide means in which the casting piston is mounted in a guided manner, wherein the guide means preferably comprises a cylindrical sleeve. The inner wall and an end face of the casting piston form a crucible into which the casting material can be melted immediately before being introduced into the casting mold. Filling a casting mold against the direction of gravity ("from below") is advantageously possible. If a movement of the casting piston is controlled, a mold filling speed or a speed profile can be defined. For this purpose, a control device can be provided, which is designed in particular for the simultaneous movement of the casting piston and the sleeve in the direction of a filling opening of the casting mold.

[0024] Because the molten casting material only remains in the formed crucible for a very short time before being introduced into the casting mold, contamination is advantageously excluded.

[0025] In a further embodiment of the invention, the casting piston, which is in particular cylindrical in shape, is movable relative to a guide means in which the casting piston is mounted in a guided manner, in particular counter to the effective direction of a restoring force of a restoring means. The restoring means can comprise a spring, for example. Wall sections of the guide means, which is designed, for example, as a sleeve, protrude beyond a base surface of the casting piston, with which the latter has contact with a molten casting material. As a result, when the sleeve docks onto the casting mold, a space can be formed which is delimited by inner walls of the sleeve, the end face of the casting piston, and a casting mold section having the filling opening. Due to the relative movement of the casting piston to the guide means, the space is reduced in size, and the molten casting material arranged in the space is pressed into the mold.Once the casting material has been introduced, the casting plunger and sleeve are moved together to an initial position away from the casting mold. The restoring force causes the casting plunger to move to its initial position, where the chamber has a maximum volume and a new casting process can be performed.

[0026] In one embodiment of the invention, the at least one melting area is provided for receiving the guide means and, in particular, has a preferably annular groove. The annular groove is, in particular, incorporated into the casting mold. As a result, the guide means can be tightly connected to a casting mold section having the filling opening to form a space that receives the casting material before it is introduced into the casting mold. As a result, the casting material is introduced exclusively into the casting mold during the pressing process.

[0027] Conveniently, the temperature of the casting mold is variable. Preferably, the temperature is adjustable by a control device. The casting mold can be air-, water-, and / or oil-cooled, for example. Furthermore, the temperature of the casting mold can be kept constant during continuous processing. This improves process stability.

[0028] In a further embodiment of the invention, the device comprises a device for venting and / or sucking molten casting material into the casting mold, which device can preferably be activated when the casting material is introduced into the mold. This allows a suction force to be applied in addition to the pressure force of a casting piston, which sucks the molten casting material into the casting mold. This is particularly advantageous when casting molten, highly viscous alloys. Furthermore, venting, i.e., sucking out a mold gas, which can be a purge gas such as argon, prevents gas inclusions from forming in the casting. Advantageously, very high casting quality is possible.

[0029] The casting mold is expediently made of at least two parts and preferably of a particularly heat-conducting material, preferably copper or a copper alloy. To prevent undesirable crystallization of an amorphous or partially amorphous solidifying metal alloy, a high cooling rate is required. Casting molds made of copper or copper alloys are particularly suitable. If the casting mold is made of at least two parts, the mold can be opened and closed and, in particular, used multiple times as a permanent mold.

[0030] At least the casting mold and at least one melting zone are incorporated into the gas-tight housing. Advantageously, the housing can be evacuated and / or filled with a protective gas, such as argon or another inert gas, so that no oxygen remains inside the housing. This prevents oxidation of the casting material during melting or during the introduction of the material into the casting mold. Advantageously, castings of the highest quality can be produced.

[0031] In one embodiment of the invention, a feed device is provided that is configured to introduce the solid casting material into the at least one melting zone. This can, for example, be a pellet magazine that introduces a new pellet into the melting zone after each casting process. Automation of the manufacturing method according to the invention is advantageously possible.

[0032] Advantageously, a means for determining the temperature of the casting material, the molten casting material, and / or the casting mold is provided, preferably a pyrometer. Advantageously, a temperature can be monitored at any time, in particular a superheating temperature, which is preferably between 75 and 800°C above the melting temperature of the casting material.

[0033] The invention is explained in more detail below with reference to exemplary embodiments and the accompanying drawings relating to the exemplary embodiments. They show: Fig. 1a-e a schematic representation of a device according to the invention, Fig. 2 a schematic representation of a further embodiment of a device according to the invention, Fig. 3 a detail of a device according to the invention, Fig. 4 a schematic representation of a further embodiment of a device according to the invention, Fig. 5 a schematic representation of a particular embodiment of a device according to the invention, Fig. 6 Details of another particular embodiment of a device according to the invention.

[0034] One in Fig. The device (1), shown schematically in cross-section in Figures 1a-e, comprises a housing (2) into which a two-part, water-cooled casting mold (3) made of copper is inserted. Each of the two parts (4, 5) of the casting mold (3) is connected by means of a rod (6, 7) to a motor (8, 9) mounted outside the housing for moving the rods (6, 7). By moving the rods (6, 7), the casting mold (3) can be opened in the direction of the double arrows (10, 11) to remove a casting and closed to produce another casting.

[0035] A melting region (13) is provided on an upper side (12) of the casting mold (3), said melting region having a base (14) formed by both parts (4, 5) of the casting mold (3) and onto which a casting material pellet (15) is placed. A filling opening (16), through which a mold cavity (17) can be filled with the casting material, is completely covered by the pellet (15). A groove (18) is arranged around the base (14) and is intended to receive a cylindrical sleeve (19). The sleeve (19) is designed to guide a cylindrical casting piston (20) and surrounds the latter. The casting piston (20) and the sleeve (19) can be moved jointly in the direction of the double arrow (21) by a motor (24), and the casting piston (20) is arranged to be displaceable relative to the sleeve (19) in its axial direction with or against a restoring force of a spring (22).To introduce a molten casting material (15), which can be superheated up to 800°C, the casting piston (20) and the sleeve (19) are moved together in the direction of the casting mold (3) until a lower section (23) of the sleeve (19) engages in the groove (18). A further movement of the casting piston (20) in the direction of the casting mold (3) takes place against a restoring force of the spring (22). A formed by an end face (25) of the casting piston (20) and an inner wall (26) of the sleeve and the top side (12) of the casting mold (3), in . Fig. The space (27) shown in Fig. 1c is thereby reduced in size, so that the molten casting material (15) is pressed vertically into the mold cavity (17).

[0036] The device further comprises a pyrometer (28) that measures the temperature of the pellet (15) during melting, as well as a feed device (29) designed as a pellet magazine. This allows a new pellet (15) to be automatically placed on the base (14) of the melting area (13) after each casting production.

[0037] The casting material pellet (15) is heated by a Fig. 1b, which is formed between a tungsten electrode (32) provided with a tip (31) and the pellet (15). For this purpose, the housing (2), the casting mold (3), and the pellet (15) are electrically conductively connected to one another and form a counter electrode to the tungsten electrode (32). The tungsten electrode (32) is movably arranged in the housing (2) and can be moved by means of a motor (33) in the direction of the double arrow (34) toward the melting region (13) and, after melting, away from the melting region (13).

[0038] It is also conceivable that a Fig. 1, a device (not shown) is provided for forming a laser beam and / or an electron beam, which is designed to heat the casting material pellet (15) in the melting region (13).

[0039] In addition, a vacuum pump (not shown) is provided for evacuating the housing (2), as well as a means (also not shown) for introducing a protective gas such as argon. Additionally, a so-called getter (35) is located inside the housing (2). This getter is designed as a titanium plate and is heated before the casting material (15) melts. Due to the very high affinity of titanium for oxygen and the very high solubility of oxygen in titanium, oxygen residues are removed from the housing atmosphere containing the protective gas. This provides additional atmospheric purification.

[0040] A casting (36) can be produced by a Fig. 1a-e schematically shown. This eliminates the need to evacuate the entire housing (2) before each casting process.

[0041] The production of the casting (36) comprises the following process steps, in particular in the order listed below: - Movement of the tungsten electrode (32) from a Fig. 1a shown starting position into a Fig. 1b shown final position above a casting material pellet to be melted (15) - Evacuation of the housing (2) and introduction of a protective gas, preferably argon - Heating a getter (35) preferably made of titanium to a temperature greater than 600 °C - Formation of an arc (30) between the tip (31) of the tungsten electrode (32) and the pellet (15) to melt the pellet (15) and superheat it to a temperature between 75 and 800°C above its melting temperature - Switching off the arc and moving the tungsten electrode (32) back to the Fig. 1a shown initial position - Movement of the casting piston (20) and the sleeve (19) in the direction of the melting area (13) until the lower section (23) of the sleeve (19) engages in the groove (18), so that a Fig. 1c, the space (27) surrounding the molten pellet (15) is formed between the casting piston (20) and the filling opening (16). - A relative movement of the casting piston (20) to the sleeve (19) against a spring force of the spring (22) to reduce the space (27), whereby the molten casting material (15) is pressed through the filling opening (16) into the mold cavity (17) of the casting mold (3) to form the casting (36). This movement is a movement of the casting piston (20) from a Fig. 1c shown initial filling position into a Fig. 1d shown final position in which the mold cavity (17) is filled with the casting material (15). - Movement of the casting piston (20) and the sleeve (19) into a Fig. 1a shown starting position above the melting area (13) - Movement of the two parts (4,5) of the casting mould (3) apart into a Fig. 1e shown casting removal position and removal of the casting (36) through the lock (37) in the direction of the arrow (38) - Closing the casting mold (3) and feeding a new pellet (15) from the pellet magazine (29) into the melting area (13).

[0042] An additional process step is conceivable, in which a pressure-sensitive element that can be activated at the beginning of the pressing in of the casting material Fig. 1a-e, a suction device not shown creates a negative pressure by which the casting mold (3) is vented and the molten casting material (15) is additionally sucked into the casting mold (3).

[0043] It is also conceivable that the casting material (15) is melted by a laser beam and / or an electron beam.

[0044] It will now Fig. 2, where identical or equivalent parts are identified by the same reference number as in Fig. 1a-e and the relevant reference number is preceded by the letter a.

[0045] One in Fig. The device (1a) shown in Figure 2 differs from that shown in Fig. 1a-e, in that two electrodes (32a, 38) are provided, which are configured to melt a cast material pellet (15a) by forming two arcs (30a, 39). Advantageously, faster heating, higher superheating, and the processing of large cast material pellets (15a) are possible.

[0046] It will now Fig. 3, where identical or equivalent parts are identified by the same reference number as in Fig. 1a-e and Fig. 2 and the relevant reference number is followed by the letter b.

[0047] One in Fig. 3 The casting mould (3b) of a device (1b) according to the invention shown in plan view differs by the Fig. 1 and Fig. 2 in that two melting areas (13b, 40) are provided with a base, on which two pellets (15b) lie, covering two filling openings (16b, 41) shown in dashed lines. It is understood that for melting in each melting area (13b, 40) at least one arc and a Fig. 3, a casting piston with a sleeve (not shown) is required. The two pellets (15b) are melted synchronously, and a molten casting material pellet (15b) is pressed into the casting mold (3b) by a preferably synchronized movement of the two casting pistons and sleeves.

[0048] Either a single mold cavity or multiple mold cavities can be filled simultaneously. This allows the device according to the invention to produce either very large castings or multiple castings simultaneously using a single casting mold.

[0049] It will now Fig. 4, where identical or equivalent parts are identified by the same reference number as in Fig. 1a-e, Fig. 2 and Fig. 3 and the relevant reference number is followed by the letter c.

[0050] One in Fig. The device (1c) shown in Figure 4 differs from that in Fig. 1 in that a casting piston (20c) and a sleeve (19c) are provided for introducing a casting material (15c) from a bottom side (42) of a casting mold (3c) into the latter. Advantageously, a particularly laminar filling can be achieved. For reasons of clarity, Fig. 4 neither a feeding device for the pellets nor a pyrometer is shown.

[0051] A crucible-shaped melting area (13c), in which a pellet (15c) lies, is formed by an end face (25c) of the casting piston (20c) and an inner wall (26c) of the sleeve (19c). The casting piston (20c) and the pellet (15c) form a counter electrode to a tungsten electrode (32c), between which and the pellet (15c) a Fig. 4 not shown arc can be formed to melt the pellet (15c).

[0052] It will now Fig. 5, where identical or equivalent parts are identified by the same reference number as in Fig. 1a-e, Fig. 2, Fig. 3 and Fig. 4 and the relevant reference number is followed by the letter d.

[0053] One in Fig. The device (1d) shown in Figure 5 differs in that Fig. 1 to 4, in that a suction device (43) is provided, which is fluidically connected to a casting mold channel (45) by a suction channel (44). The suction device (43) can be activated and, upon movement of a casting piston (20d), by which a molten casting material (15d) is pressed into a casting mold (3d), additionally sucks molten casting material into the casting mold (3d) from a side preferably facing away from the casting piston (20d). This additional suction force can advantageously result in better casting mold filling.

[0054] It is understood that the suction device (43) can also be arranged outside the housing (2d). Furthermore, it is understood that a transition region from the suction channel (44) to the casting mold channel (43) is designed such that opening of a multi-part casting mold is still possible.

[0055] It will now Fig. 6, where identical or equivalent parts are identified by the same reference number as in Fig. 1a-e, Fig. 2, Fig. 3, Fig. 4 and Fig. 5 and the relevant reference number is followed by the letter e.

[0056] One in Fig. The two-part casting mold (3e) shown in Figure 6 differs from the ones shown in Fig. 1 to 5 in that a horizontal filling of a mold cavity (17e) is possible. A melting area (13e) comprises a recess (14e) in a part (5e) of the casting mold (3e), in which a Fig. 6a shown, molten casting material pellet (15e).

[0057] A sleeve (19e) has an opening (46) in a lower sleeve section (23e) through which the molten casting material (15e) can be introduced into the mold cavity (17e) of the casting mold (3e).

[0058] An outer side of the sleeve (19e) and an outer side of the casting mold (3e) as well as an end face of the sleeve (19e) and an upper side of the casting mold (3e) further form a sealing surface.

[0059] It is conceivable that several arcs (30; 30a, 39) are formed between an electrode and a single, in particular pellet-shaped, casting material (15; 15a; 15b; 15c; 15d; 15e).

[0060] It is further conceivable for a casting mold (3; 3a; 3b; 3c; 3d; 3e) to be provided with a plurality of filling openings (16; 16a; 16b, 41; 16c; 16d; 16e) of different sizes. For this purpose, it is advantageous if the size of a casting piston (20; 20a; 20b; 20c; 20d; 20e) is adapted to the size of the filling openings (16; 16a; 16b, 41; 16c; 16d; 16e) and / or the size of the casting pellets (15; 15a; 15b; 15c; 15d; 16e). For this purpose, casting pistons (20; 20a; 20b; 20c; 20d; 20e) of different sizes can be provided in a device (1; 1a; 1b; 1c; 1d; 1e), which, for example, have different diameters from one another.

Claims

[1] Device (1; 1a; 1b; 1c; 1d; 1e) for producing a cast part (36) made of an amorphous or partially amorphous metal, which device comprises a casting mold (3; 3a; 3b; 3c; 3d; 3e) with at least one filling opening (16; 16a; 16b, 41; 16c; 16d; 16e) for introducing a casting material (15; 15a; 15b; 15c; 15d; 15e) forming the cast part (36) and a device for melting the casting material (15; 15a; 15b; 15c; 15d; 15e), the melting device has at least one area (13; 13; 13b; 41, 13c; 13d; 13e), which is provided for melting the casting material (15; 15a; 15b; 15c; 15d; 15e), and a means for forming at least one arc (30; 30a, 39) in the at least one melting region (13; 13; 13b; 40, 13c; 13d; 13e), wherein the means comprises at least two electrodes (32; 32a, 38; 32b; 32c) arranged at a distance from one another, between which the at least one arc (30; 30a, 39) can be formed, and one of the at least two electrodes (32;32a, 38; 32b; 32c) is at least partially formed by the casting material (15; 15a; 15b; 15c; 15d; 15e), ; characterized by that a casting piston (20; 20a; 20b; 20c; 20d; 20e), which is provided for introducing molten casting material (15; 15a; 15b; 15c; 15d; 15e) into a mold cavity (17; 17a; 17c; 17d; 17e) of the casting mold (3; 3a; 3b; 3c; 3d; 3e), and one of the at least two electrodes are arranged on the same side of the mold cavity in a gas-tight housing (2; 2a; 2c; 2d). [2] Device according to claim 1, characterized by that the at least one melting region (13; 13; 13b; 40, 13c; 13d; 13e) is introduced into the casting mold (3; 3a; 3b; 3c; 3d; 3e). [3] Device according to claim 1 or 2, characterized byin that the at least one melting region (13; 13; 13b; 40, 13c; 13d; 13e) comprises a particularly trough-like depression (14e) and / or a base-like elevation (14; 14a; 14c; 14d) for receiving the casting material (15; 15a; 15b; 15c; 15d; 15e), and is preferably arranged at least partially around the at least one filling opening (16; 16a; 16b, 41; 16c; 16d; 16e). [4] Device according to one of claims 1 to 3, characterized by in that the at least one melting region (13; 13; 13b; 40, 13c; 13d; 14e) is delimited by an end face (25; 25a; 25c; 25d; 25e) of the in particular cylindrical casting piston (20; 20a; 20b; 20c; 20d; 20e) and an inner wall (26; 26a; 26c, 26d) of a guide means in which the casting piston (20; 20a; 20b; 20c; 20d; 20e) is mounted in a guided manner, wherein the guide means preferably comprises a cylindrical sleeve (19; 19a, 19c; 19d; 19e). [5] Device according to one of claims 1 to 4, characterized byin that the in particular cylindrical casting piston (20; 20a; 20b; 20c; 20d; 20e) is movable relative to a guide means (19; 19a; 19c; 19d; 19e) in which the casting piston (20; 20a; 20b; 20c; 20d; 20e) is mounted in a guided manner, in particular counter to an effective direction of a restoring force of a restoring means (22). [6] Device according to claim 4 or 5, characterized by that the at least one melting region (13; 13; 13b; 40, 13c; 13d; 13e) is provided for receiving the guide means and in particular has a preferably annular groove (18; 18a; 18c; 18d). [7] Device according to one of claims 1 to 6, characterized by that a temperature of the casting mold (3; 3a; 3b; 3c; 3d; 3e) is variable. [8] Device according to one of claims 1 to 7, characterized bythat the device (1; 1a; 1b; 1c; 1d) comprises a device (43) for venting and / or sucking molten casting material (15; 15a; 15b; 15c; 15d; 15e) into the casting mold (3; 3a; 3b; 3c; 3d; 3e), which device can preferably be activated when the casting material (15; 15a; 15b; 15c; 15d; 15e) is introduced into the casting mold (3; 3a; 3b; 3c; 3d; 3e). [9] A method for producing a casting (36) made of a partially amorphous or amorphous metal, comprising the following process steps: - introducing a casting material (15; 15a; 15b; 15c; 15d; 15e) into a melting region (13; 13; 13b; 40, 13c; 13d; 13e) in which the casting material (15; 15a; 15b; 15c; 15d; 15e) is heated to a temperature above its melting temperature by an arc (30; 30a, 39) arranged between at least two electrodes arranged at a distance from one another, one of which is formed at least partially from the casting material, - pressing the molten casting material (15; 15a; 15b; 15c; 15d; 15e) into a mold cavity (17; 17a; 17c; 17d; 17e) of a casting mold (3; 3a; 3b; 3c; 3d; 3e) by a casting piston (20; 20a; 20b; 20c; 20d; 20e), - removing the casting (36) from the mould (3; 3a; 3b; 3c; 3d; 3e), - wherein, when the casting material is introduced into the melting area, when the molten casting material is pressed into the mold cavity and when the casting is removed from the casting mold, both the casting piston and one of the at least two electrodes are arranged on the same side of the mold cavity in a gas-tight housing. [10] Method according to claim 9, characterized by that the casting material (15; 15a; 15b; 15c; 15d; 15e) is heated to a temperature which is up to 800°C above its melting temperature, at least 75°C, in particular 150°C, preferably 200 to 400°C. [11] Method according to claim 9 or 10, characterized bythat the casting material (15; 15a; 15b; 15c; 15d; 15e) at least partially covers a filling opening (16; 16a; 16b, 16c; 16d; 16e) through which the casting mold (3; 3a; 3b; 3c; 3d) can be filled. [12] Method according to one of claims 9 to 11, characterized by that the mold cavity (17; 17a; 17c; 17d; 17e) is vented before the molten casting material (15; 15a; 15b; 15c; 15d; 15e) is injected. [13] Method according to one of claims 9 to 12, characterized byin that, in order to introduce the molten casting material (15; 15a; 15b; 15c; 15d; 15e) into the mold cavity (17; 17a; 17c; 17d; 17e) of the casting mold (3; 3a; 3b; 3c; 3d; 3e), a relative movement of the casting piston (20; 20a; 20b; 20c; 20d; 20e) to a guide means (19; 19a; 19c; 19d; 19e) guiding the casting piston takes place against a restoring force of a restoring means (22), whereby a space (27; 27e) receiving the molten casting material (15; 15a; 15b; 15c; 15d; 15e) is reduced in size, and the molten casting material (15; 15a; 15b; 15c; 15d; 15e) is pressed through the filling opening (16; 16a; 16b, 16c; 16d; 16e) into the mold cavity (17; 17a; 17c; 17d; 17e) of the casting mold (3; 3a; 3b; 3c; 3d; 3e) to form the casting (36).

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