EP3326733B1 - Gusseisenguss, verfahren zur herstellung eines gusseisengusses und vorrichtung zur herstellung eines gusseisengusses - Google Patents

Gusseisenguss, verfahren zur herstellung eines gusseisengusses und vorrichtung zur herstellung eines gusseisengusses Download PDF

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Publication number
EP3326733B1
EP3326733B1 EP15899695.9A EP15899695A EP3326733B1 EP 3326733 B1 EP3326733 B1 EP 3326733B1 EP 15899695 A EP15899695 A EP 15899695A EP 3326733 B1 EP3326733 B1 EP 3326733B1
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European Patent Office
Prior art keywords
mold
casting
cast
manufacturing
melt
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EP15899695.9A
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English (en)
French (fr)
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EP3326733A1 (de
EP3326733A4 (de
Inventor
Takahumi Oba
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Sintokogio Ltd
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Sintokogio Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/03—Sand moulds or like moulds for shaped castings formed by vacuum-sealed moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
    • B22D23/06—Melting-down metal, e.g. metal particles, in the mould
    • 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
    • B22D27/20—Measures not previously mentioned for influencing the grain structure or texture; Selection of compositions therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
    • 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
    • B22D47/02—Casting plants for both moulding and casting

Definitions

  • the present invention relates to a method for manufacturing a cast-iron casting and equipment for manufacturing a cast-iron casting.
  • Plating treatments and enameling treatments have existed as techniques for imparting corrosion resistance, wear resistance, heat resistance or the like on surfaces of metal products. Moreover, when performing plating treatments and enameling treatments on a surface of a cast-iron casting, a problem in which the presence of graphite and free cementite on the casting surface have adverse effects on these treatments is known, and techniques or research have been performed in the past in order to overcome this problem.
  • Patent Document 1 discloses cleaning and activating the surface of a steel product and then adding a catalyst that promotes a redox reaction to perform plating.
  • Patent Document 2 discloses adhering a pure Fe thin plate to a surface part of a mold that is in contact with a casting, casting molten spheroidal graphite cast iron into a mold, dissolving the pure Fe thin plate on the casting surface, forming a surface layer that inhibits the formation of graphite on the surface of the casting, and then performing zinc plating.
  • Patent Document 3 discloses applying ultra-sonic vibration in a state in which a cast-iron material is immersed in a plating solution, cleaning the surface of the cast-iron material, crushing and dissolving in a plating solution graphite present on this surface, and then forming a plating film that includes graphite in a state in which it has been dispersed on this surface.
  • Non-Patent Document 1 suggests that carbon monoxide and carbon dioxide generated by the oxidation of graphite in the vicinity of casting surfaces in an enameling treatment for cast iron cause bubble-shaped defects.
  • Non-Patent Document 2 discloses that metal structures in which defects occur are gradually cooled and enlarged graphite, and those that were conversely quenched to prevent the growth of graphite. This document discloses that it is effective to perform a degassing heat treatment before an enameling treatment in order to improve these structures.
  • Non-Patent Document 3 discloses that many defects occur in areas of coarse graphite structures, areas where ledeburite has crystallized, and areas where tempered carbon has crystallized after cementite has decomposed due to rising temperatures during an enameling treatment. To improve this, the document describes that bubble-shaped defects can be significantly suppressed by preventing the coarsening of graphite as a low carbon saturation, increasing phosphorous content to prevent the crystallization of ledeburite, suppressing the decomposition of cementite during the enameling treatment, and further performing a degassing heat treatment before the enameling treatment for a casting for which these measures have been performed.
  • Patent Documents 4 and 5 disclose, in manufacturing an enameled cast iron, that there are fewer bubble defects for those with a non-graphite layer generated on a cast-iron surface structure, there are fewer bubble defects for cast iron of flake graphite cast iron with a low-carbon and high-silicon composition, and that the occurrence of bubble defects can be reduced by adding titanium, even with a high-carbon and low-silicon composition.
  • methods to suppress adverse effects from graphite and free cementite include the likes of: chemically, physically or thermally treating the casting to remove graphite and the like; forming a film that does not include graphite near the casting surface after founding; pouring a melt in a state in which a pure Fe thin plate is attached to the surface of a mold in contact with the melt and forming a non-graphite layer near the casting surface; or controlling the chemical composition of the casting surface and adding an alloy to form a non-graphite layer near the casting surface.
  • Patent Document 6 discloses a founding method directed to adhering a shielding member to a shielding surface of an original shape member, filling the inside or outside of this shielding member with a heat-resistant granular material, making the heat-resistant granular material have a negative pressure, adsorbing the shielding member on the side of the heat-resistant granular material while releasing the original shape member to form a cavity, and pouring a melt into the cavity, wherein air is introduced into the side of the heat-resistant granular material when the surface layer of the molten metal begins to solidify after the pouring of the melt has been completed.
  • Patent Document 7 discloses a founding method wherein a melt is injected into a mold molded using silica sand in a dry state, and after the injected melt has solidified, air is flown through the silica sand in a dry state surrounding the casting material, which is formed by the solidification of the melt, to cool the casting material.
  • Patent Document 8 discloses a vacuum based molding process.
  • the purpose of the present invention is to provide a method for manufacturing a cast-iron casting, and equipment for manufacturing a cast-iron casting, which are capable of performing a plating treatment or an enameling treatment without defects on the surface of the cast-iron casting, regardless of the specifications of the cast-iron casting, without decreasing productivity or increasing manufacturing costs.
  • the present invention which is given in claims 1 and 3 comprises: a step for molding a mold by evacuating molding sand a step for pouring a melt into the mold; a step for evacuating the inside of the mold until the temperature of the casting formed by the melt falls to or below an A1 transformation point; and wherein the molding sand does not contain a binding agent, and the proportion of grains having a diameter of less than 53 ⁇ m in the molding sand is 10% or less.
  • the present invention in the equipment for manufacturing a cast-iron casting that evacuates molding sand and pours a melt into a mold that has been molded to manufacture a cast-iron casting, comprises: at least one mold; a frame feed device that moves the mold; at least one fixed suction device that evacuates the inside of the mold when the mold is stopped; and at least one movable suction device that moves while evacuating the inside of the mold instead of the fixed suction device when the mold is moving, and the mold is repeatedly moved and stopped by the frame feed device until the casting temperature inside of the mold after the melt has been poured falls to or below the A1 transformation point.
  • the present invention in the mold-molding method wherein a melt is poured into a mold molded by evacuating molding sand, is manufactured by maintaining evacuation inside of the mold until the casting temperature inside of the casting after a melt has been poured falls to or below the A1 transformation point and the molding sand does not contain a binding agent, and the proportion of grains having a diameter of less than 53 ⁇ m in the molding sand is 10% or less.
  • the present invention it is possible to oxidize graphite near the casting surface that has adverse effects on the plating treatment or the enameling treatment, and to prevent the occurrence of free cementite, thereby making it possible to easily and inexpensively suppress defects during the plating treatment or the enameling treatment.
  • the method for manufacturing a cast-iron casting in the present invention pertains to decompressing and molding a mold using molding sand that does not contain a binding agent, and after a melt is poured, maintaining decompression inside of the mold until the temperature of the casting incorporated in the mold falls to or below the A 1 transformation point.
  • the purpose of the present invention is to create a non-graphite layer near the casting surface by maintaining decompression inside of the mold to create a state in which air continuously flows to the casting surface, and oxidizing graphite and free cementite, which have adverse effects on the plating treatment or the enameling treatment. To do so, this state must be maintained until the temperature at which a eutectoid reaction finishes completely, that is, an A cm transformation point in a metastable system, or the temperature at or below the A 1 transformation point in a stable system, is reached.
  • the target material is cast iron, and operations that result in metastable coagulation reactions in Fe-C-based binary alloy phase diagrams such as forced quenching are not performed, so decompression is maintained inside of the mold until the temperature falls to or below the A 1 transformation point, which is the coagulation reaction completion temperature of the stable system.
  • eutectic or eutectoid reactions of graphite or cementite occur at temperatures lower than: an A 2 transformation point, which is the magnetic transformation temperature of Fe; an A 3 transformation point, which is when a crystal structure changes from a body-centered cubic lattice to a face-centered cubic lattice; and an A 4 transformation point, which is when a crystal structure changes again from a face-centered cubic lattice to a body-centered cubic lattice.
  • an A 2 transformation point which is the magnetic transformation temperature of Fe
  • an A 3 transformation point which is when a crystal structure changes from a body-centered cubic lattice to a face-centered cubic lattice
  • an A 4 transformation point which is when a crystal structure changes again from a face-centered cubic lattice to a body-centered cubic lattice.
  • V-process a decompression mold-molding method
  • V-process a mold-molding/melt-pouring process having: a shielding member adhering step for adhering the shielding member to the surface of an original pattern plate; a step for placing a mold frame body on the adhered shielding member and filling the mold frame body with the molding sand that does not contain a binding agent; a step for sealing the upper surface of the molding sand so there is negative pressure inside of the mold frame body, thereby adsorbing the shielding member to the molding sand side and molding the shielding member; a step for releasing the original pattern plate from the shielding member and molding a half mold having a mold surface; a step for matching the half mold with another half mold that has been similarly molded
  • an evaporative pattern founding method is included, wherein: a pattern comprising a foam body made of a resin is embedded in molding sand that does not include a binding agent; and the inside is decompressed to form a mold, and while still in a decompressed state, the foam body made of a resin is melted as a melt is poured.
  • a state must be created in which air is always flowing over the casting surface to form a decarburization layer.
  • the decompression pressure of the mold is made to be in a state extremely close to the atmospheric pressure, molding sand drops onto the casting surface, so the state in which air is always flowing over the casting surface cannot be created.
  • the decompression pressure is made to be in a state close to a vacuum, the state in which air is always flowing over the casting surface can be created, but the melt will seep into the gaps between the molding sand grains and cause substantial insertion defects.
  • the decompression pressure should preferably be between -10 kPa to -70 kPa.
  • the molding sand in the present invention may be of any type, such as silica sand, olivine sand, chromite sand, zircon sand, and ceramic artificial sand.
  • molding sand with high air permeability when filled as a mold is suitable, so molding sand with a low proportion of grains having a diameter of less than 53 ⁇ m is suitable.
  • the proportion of grains having a diameter of less than 53 ⁇ m should preferably be 10% or less.
  • the time needed until the temperature of the casting incorporated in the mold falls to or below the A 1 transformation point differs depending on the mass and thickness of the product.
  • the equipment for manufacturing a cast-iron casting that has as many fixed suction devices and movable suction devices as the number of frames needed to perform processes until the temperature of the casting incorporated in the mold falls to or below the A 1 transformation point
  • the surface temperature of a casting C inside of the mold cannot be directly measured, so the time needed until the temperature of the casting falls to or below the A 1 transformation point must be confirmed through a founding simulation after setting founding conditions beforehand, or by experimentally performing founding and actually measuring the time needed until the temperature falls to or below the A 1 transformation point.
  • Fig. 1 is a schematic diagram showing the configuration of equipment for manufacturing a cast-iron casting according to the first embodiment.
  • the equipment for manufacturing a cast-iron casting 1 is equipment that uses the V-process to manufacture a cast-iron casting, constituted by comprising: a mold 2 using molding sand that does not contain a binding agent; a molding board 3; a frame feed device 4; a fixed suction device 5; and a movable suction device 6.
  • the mold 2 is a mold that has been formed by molding sand inside of a mold frame body.
  • Fig. 1 shows the state of the fixed suction device 5 and the movable suction device 6 at the time just before the mold 2 moves.
  • the fixed suction device 5 sucks each mold 2 and decompresses the inside of the mold 2.
  • the fixed suction device 5 separates, and instead, the movable suction device 6 adheres to and sucks the mold 2, decompressing the inside of the mold 2.
  • the movable suction device 6 follows the mold 2 and moves.
  • the movable suction device 6 separates, and instead, the fixed suction device 5 adheres to and sucks the mold 2, decompressing the inside of the mold 2.
  • the equipment has at least as many fixed suction devices 5 and movable suction devices 6 as the number of frames needed to perform the processes until the temperature of the casting incorporated in the mold falls to or below the A 1 transformation point.
  • the mold 2 moves from the right side of the figure to the left side, and the mold 2 on the right end is in a state just after a melt has been poured, while the mold 2 on the left end, after a melt has been poured, is in a decompressed state until the temperature of the mold incorporated in the mold falls to or below the A 1 transformation point.
  • the frame feed device 4 adheres to each molding board 3 on which the molds 2 at both ends have each been placed, and the molding board 3 is fixed from both sides.
  • the mold 2 is kept in a decompressed state by the fixed suction device 5 being in communication with a piping 7 to a suction source (not shown). Furthermore, the movable suction device 6 in communication with a hose 8 that freely moves to the suction source (not shown) adheres to the mold 2, and the mold 2 is decompressed while the fixed suction device 5 simultaneously separates.
  • Fig. 2 is a schematic diagram showing the state after the movable suction device 6 has moved following the mold 2 sent by the frame feed device 4.
  • the movable suction device 6 is coupled to the frame feed device 4 by a coupling mechanism (not shown), so the movable suction device 6 follows the actions of the frame feed device 4 and moves. In this manner, the mold 2 is kept in a decompressed state by the movable suction device 6 even during movement.
  • the mold 2 on the left end is transported by a transport device (not shown) to the next step, which is a secondary cooling step or a removal step.
  • a new frame in which a melt has not been poured is transported to the right side by the transport device (not shown), which is provided with a suction device, from a molding step, which is the previous step.
  • the fixed suction device 5 adheres to the mold 2, and the mold 2 is decompressed while the fixed suction device 6 simultaneously separates. In this manner, the decompressed state of the mold 2 is maintained by the fixed suction device 5.
  • FIG. 3 is a schematic diagram showing the state of the fixed suction device 5 and the movable suction device 6 immediately after the devices have returned to their original positions.
  • the number of molds 2 placed on the series of molding boards 3 that are adhered and fixed with the frame feed device 4 is determined by a cycle time, which is the time needed to mold a mold, as well as the time taken until the temperature of the casting incorporated in the mold falls to or below the A 1 transformation point.
  • the molds 2, which are placed on the series of molding boards 3 and which are adhered and fixed by the frame feed device 4, are all cooled while kept in a decompressed state by the fixed suction device 5 and the movable suction device 6, but are not limited to such.
  • the sixth and subsequent frames may be moved by the frame feed device 5 without sucking the mold as the secondary cooling process.
  • the second embodiment relates to the configuration of the surroundings of the mold 2 in the equipment for manufacturing a cast-iron casting 1 of the first embodiment.
  • the second embodiment will be explained with reference to the attached drawings.
  • Regarding the configuration of the equipment for manufacturing a cast-iron casting according to the present embodiment the portions that differ from the first embodiment will be explained.
  • the other portions are the same as in the first embodiment, so reference will be made to the above-given descriptions, and the descriptions will here be omitted.
  • the equipment for manufacturing a cast-iron casting 1 is constituted by comprising: a mold 2; a molding board 3; a frame feed device 4; a fixed suction device 5; and a movable suction device 6.
  • Fig. 4 is a schematic cross-sectional representation of the surroundings of the mold 2 according to the second embodiment.
  • Fig. 4 shows a V-process mold, constituted by: the mold 2 using molding sand 9 that does not contain a binding agent; the fixed suction device 5; a temperature sensor 10; and a control device 11, the temperature sensor 10 being in a state in which it has been inserted and contacted with the thickest area of the casting C inside of the mold 2.
  • the temperature sensor 10 stands by beforehand directly above the thickest area of the casting C outside the mold 2.
  • the standby position of the temperature sensor 10 changes depending on the product, so the position in the horizontal direction of each of the thickest areas and the height from a reference surface are stored beforehand in a storage device (not shown), and the control device 11 moves the temperature sensor 10 on the basis of this information. Additionally, the mold 2 is in communication with a suction source (not shown) through the fixed suction device 5 and the piping 7.
  • the temperature sensor 10 After information indicating that the pouring of a melt has completed is inputted into the control device 11, the temperature sensor 10 is inserted and contacted with the thickest area of the casting C inside the mold 2 by an inserting/removing device (not shown). This allows the temperature information of the surface of the casting C to be inputted into the control device 11.
  • control device 11 When the control device 11 senses that the product surface temperature of the casting C has reached or fallen below the A 1 transformation point with the information from the temperature sensor 10, the control device 11 separates the fixed suction device 5 from the mold 2 and releases the decompressed state. Next, the temperature sensor 10 is removed by the inserting/removing device (not shown).
  • an operator may push a push-button connected to the control device 11 to input the information indicating that the pouring of a melt has completed, or may measure the temperature of the upper surface of flow off using a non-contact thermometer, monitor the information on the temperature of the upper surface of flow off with the control device 11, determine that the pouring of a melt has completed after the temperature of the upper surface of flow off has reached the melt temperature, and insert and contact the temperature sensor 10.
  • the third embodiment as in the second embodiment, relates to the configuration of the surroundings of the mold 2 in the equipment for manufacturing a cast-iron casting 1 of the first embodiment.
  • the third embodiment will be explained with reference to the attached drawings.
  • Regarding the configuration of the equipment for manufacturing a cast-iron casting according to the present embodiment the portions that differ from the second embodiment will be explained.
  • the other portions are the same as in the second embodiment, so reference will be made to the above-given descriptions, and the descriptions will here be omitted.
  • the equipment for manufacturing a cast-iron casting 1 is constituted by comprising a mold 2; a molding board 3; a frame feed device 4; a fixed suction device 5; and a movable suction device 6.
  • Fig. 5 is a schematic cross-sectional representation of the surroundings of the mold 2 according to the third embodiment.
  • Fig. 5 shows a V-process mold, comprising: the mold 2 using molding sand 9 that does not contain a binding agent; a temperature sensor 10; a control device 11; a warning light 12, and a two-way valve 13, the temperature sensor 10 being in a state in which it has been inserted and contacted with the thickest area of the casting C inside of the mold 2.
  • the temperature sensor 10 stands by beforehand directly above the thickest area of the casting C outside the mold 2, similar to the second embodiment.
  • the standby position of the temperature sensor 10 changes depending on the product, so the position in the horizontal direction of each of the thickest areas and the height from a reference surface are stored beforehand in a storage device (not shown), and the control device 11 moves the temperature sensor 10 on the basis of this information.
  • the mold 2 is coupled to a two-way valve 13 through a hose 8, which is easily removable.
  • the two-way valve 13 is in communication with a suction source (not shown) through the piping 7.
  • the temperature sensor 10 is inserted and contacted with the thickest area of the casting C inside of the mold 2 by an inserting/removing device (not shown). This allows the temperature information of the surface of the casting C to be inputted into the control device 11.
  • the control device 11 When the control device 11 senses that the product surface temperature of the casting C has reached or fallen below the A 1 transformation point with the information from the temperature sensor 10, the control device 11 lights the warning light 12. When the operator confirms that the warning light 12 is lit, the operator manually closes the two-way valve 13, and removes the hose 8 from the mold 2 to release the decompressed state. Next, the temperature sensor 10 is removed by the inserting/removing device (not shown).
  • the operator may push a push-button connected to the control device 11 to input the information indicating that the pouring of a melt has completed, or measure the temperature of the upper surface of flow off using a non-contact thermometer, monitor the information on the temperature of the upper surface of flow off with the control device 11, determine that the pouring of a melt has completed after the temperature of the upper surface of flow off has reached the melt temperature, and insert and contact the temperature sensor 10.
  • examples in the V-process were raised for the first to third embodiments, but the configuration and action of the equipment are similar even in the case of the evaporative-pattern casting method.
  • molding sand that does not contain a binding agent is used in the first to third embodiments, but trace amounts of a binding agent may be contained in the molding sand so long as a state in which air is continually flowing over the casting surface can be created in a state in which the inside of the mold has been decompressed.
  • the present invention in the manufacturing method for a cast-iron casting in which a plating treatment or enameling treatment is performed on the surface thereof after founding, uses molding sand that does not contain a binding agent, and uses a mold-molding method that pours a melt in a state in which the inside of the mold has been decompressed, and after a melt has been poured, decompression is maintained inside of the mold until the temperature of the casting incorporated in the mold falls to or below the A 1 transformation point, so there is a state in which air is always flowing over the casting surface.
  • graphite near the surface is rapidly oxidized, so a decarburization layer is formed near the casting surface.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Devices For Molds (AREA)
  • Mold Materials And Core Materials (AREA)

Claims (7)

  1. Verfahren zum Herstellen eines Gusseisengussstücks (C), umfassend:
    einen Schritt zum Formen einer Form (2) durch Evakuieren des Formsandes (9);
    einen Schritt zum Gießen einer Schmelze in die Form (2);
    einen Schritt zum Evakuieren des Inneren der Form (2), bis die Temperatur des durch die Schmelze ausgebildeten Gussstücks (C) auf oder unter einen A1-Umwandlungspunkt fällt; und
    wobei der Formsand (9) kein Bindemittel enthält und der Anteil an Körnern, die einen Durchmesser von weniger als 53 µm in dem Formsand (9) aufweisen, 10 % oder weniger beträgt.
  2. Verfahren zum Herstellen eines Gusseisengussstücks (C) nach Anspruch 1, wobei der Druck im Inneren der Form (2) zwischen -10 kPa bis -70 kPa gehalten wird.
  3. Anlage (1) zum Herstellen eines Gusseisengussstücks (C), die Formsand (9) evakuiert und eine Schmelze in eine Form (2) gießt, die geformt wurde, um ein Gusseisengussstück (C) herzustellen, umfassend:
    wenigstens eine Form (2);
    eine Rahmenvorschubvorrichtung (4), die die Form (2) bewegt;
    wenigstens eine befestigte Saugvorrichtung (5), die das Innere der Form (2) evakuiert, wenn die Form (2) gestoppt wird; und
    wenigstens eine bewegbare Saugvorrichtung (6), die sich bewegt, während sie das Innere der Form (2) anstelle der befestigten Saugvorrichtung (5) evakuiert, wenn sich die Form (2) bewegt, wobei die Form (2) durch die Rahmenvorschubvorrichtung (4) wiederholt bewegt und angehalten wird, bis die Gießtemperatur im Inneren der Form (2), nachdem die Schmelze gegossen wurde, auf oder unter einen A1-Umwandlungspunkt fällt.
  4. Anlage (1) zum Herstellen eines Gusseisengussstücks (C) nach Anspruch 3, wobei mehrere Formen (2) vorhanden sind und wobei die Rahmenvorschubvorrichtung (4) die mehreren Formen (2) gleichzeitig bewegt und wenigstens die gleiche Anzahl der befestigten Saugvorrichtungen (5) und der bewegbaren Saugvorrichtungen (6) wie die Anzahl der Formen (2) bereitgestellt ist.
  5. Anlage (1) zum Herstellen eines Gusseisengussstücks (1) nach Anspruch 3 oder 4, ferner umfassend:
    einen Temperatursensor (10), der die Produktoberflächentemperatur des Gussstücks (C) misst; und
    eine Steuervorrichtung (11), die derart steuert, dass die befestigte Saugvorrichtung (5) von der Form (2) getrennt wird und ein evakuierter Zustand freigegeben wird, wenn die Produktoberflächentemperatur des Gussstücks (C) den A1-Umwandlungspunkt erreicht hat oder unter diesen gefallen ist.
  6. Anlage (1) zum Herstellen eines Gusseisengussstücks (C) nach Anspruch 5, wobei der Temperatursensor (10) in das Innere der Form (2) eingesetzt ist, um den dicksten Bereich des Gussstücks (C) im Inneren der Form (2) zu berühren.
  7. Anlage (1) zum Herstellen eines Gusseisengussstücks (C) nach Anspruch 5 oder 6, ferner umfassend eine Warnleuchte (12), die aufgrund einer Anweisung der Steuervorrichtung (11) leuchtet.
EP15899695.9A 2015-07-24 2015-11-26 Gusseisenguss, verfahren zur herstellung eines gusseisengusses und vorrichtung zur herstellung eines gusseisengusses Active EP3326733B1 (de)

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JP2015146257 2015-07-24
PCT/JP2015/083213 WO2017017863A1 (ja) 2015-07-24 2015-11-26 鋳鉄鋳物、鋳鉄鋳物の製造方法、及び、鋳鉄鋳物製造設備

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EP3326733A1 EP3326733A1 (de) 2018-05-30
EP3326733A4 EP3326733A4 (de) 2019-01-02
EP3326733B1 true EP3326733B1 (de) 2021-05-05

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US (1) US20180369900A1 (de)
EP (1) EP3326733B1 (de)
JP (1) JP6586994B2 (de)
KR (1) KR20180034470A (de)
CN (1) CN106559990B (de)
RU (1) RU2710612C2 (de)
WO (1) WO2017017863A1 (de)

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CN115090835B (zh) * 2022-06-22 2023-12-29 繁峙县志高矿山机械有限责任公司 一种五金铸件的精密铸造工艺
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WO2017017863A1 (ja) 2017-02-02
RU2710612C2 (ru) 2019-12-30
CN106559990A (zh) 2017-04-05
JPWO2017017863A1 (ja) 2018-03-29
RU2018103953A3 (de) 2019-08-26
EP3326733A1 (de) 2018-05-30
CN106559990B (zh) 2019-11-05
EP3326733A4 (de) 2019-01-02
US20180369900A1 (en) 2018-12-27

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