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EP2929957A1 - Machine et procédé de coulée sous pression pour la fabrication de plusieurs pièces de fonderie - Google Patents

Machine et procédé de coulée sous pression pour la fabrication de plusieurs pièces de fonderie Download PDF

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Publication number
EP2929957A1
EP2929957A1 EP14163832.0A EP14163832A EP2929957A1 EP 2929957 A1 EP2929957 A1 EP 2929957A1 EP 14163832 A EP14163832 A EP 14163832A EP 2929957 A1 EP2929957 A1 EP 2929957A1
Authority
EP
European Patent Office
Prior art keywords
casting
mold
die casting
casting machine
cavities
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14163832.0A
Other languages
German (de)
English (en)
Inventor
Rupert Frech
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Buehler AG
Original Assignee
Buehler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Buehler AG filed Critical Buehler AG
Priority to EP14163832.0A priority Critical patent/EP2929957A1/fr
Priority to PCT/EP2015/057485 priority patent/WO2015155170A1/fr
Publication of EP2929957A1 publication Critical patent/EP2929957A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2053—Means for forcing the molten metal into the die using two or more cooperating injection pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/26—Mechanisms or devices for locking or opening dies
    • B22D17/266—Mechanisms or devices for locking or opening dies hydraulically

Definitions

  • the present invention relates to a die casting machine and a die casting method for more efficient and economical production of die cast components.
  • Die casting machines are used for the production of metallic castings such as engine blocks. Is exemplary in the WO 2008/131571 A1 a horizontal two-plate die casting machine described.
  • This two-plate die casting machine comprises a movable clamping plate (BAP) and a fixed clamping plate (FAP), on each of which a mold half is arranged.
  • BAP movable clamping plate
  • FAP fixed clamping plate
  • the die can be opened and closed.
  • the two clamping plates are pressed firmly against each other, so that the two mold halves form a closed mold.
  • a molten metal is introduced under pressure and cooled until solidification.
  • the solidified casting can be removed after opening the mold (by moving the movable platen).
  • the movement of the movable platen takes place in the machine according to the WO 2008/131571 A1 above columns, preferably four columns.
  • the shape formed by the two mold halves can be configured differently.
  • the cavities may have the same dimensions (thereby enabling the simultaneous production of components of the same shape), or alternatively the cavities may have different dimensions (whereby the simultaneous production of components of different shape is made possible).
  • the closing pressure required for holding the mold halves together during the casting cycle increases.
  • a pressure arises there, the size of which depends, inter alia, on the pressure exerted on the melt during the casting cycle and on the dimensions of the cavity (s). From this pressure results the so-called explosive force which would move the two mold halves apart during the casting cycle, if one did not keep the mold halves closed by applying a closing force exceeding the explosive force. Since the closing force can not be arbitrarily increased but depends on the size of the die casting machine, the dimensions of the cavity (s) are limited in a conventional die casting machine.
  • a die casting machine comprising a movable platen and a fixed platen, arranged on the movable platen mold half and arranged on the fixed platen mold half, characterized in that the die casting machine at least two, preferably two casting drives and an analog Has number of Giessgarnituren assigned to the Giessantrieben.
  • the present invention is based on the idea not to fill all the cavities of a die-casting mold with a single casting drive, but to use at least two casting drives for filling the cavities.
  • the diecasting machine it is possible to carry out the production of castings in different cavities during a casting cycle with such a time delay that the entire casting cycle can be carried out with a lower closing force.
  • the cavities can be filled sequentially by different casting drives, so that the explosive force to be compensated only in the respectively filled Cavities occurs and not the entire explosive force is to compensate, which would occur with simultaneous filling of all existing cavities. This will be explained in detail below.
  • a “casting unit” is understood to mean the entirety of all components of a die-casting machine which are used for the movement of a casting piston and for the pressurization of the molten metal.
  • the "casting drive” is an essential part of a casting unit.
  • a casting drive of a die-casting machine according to the invention comprises a normally hydraulically operated casting cylinder with movable drive pistons disposed therein, a shot valve for controlling the movement of the drive piston in the casting cylinder, and a pressure accumulator.
  • a casting unit comprises further components such as a guide frame, tie rod, hydraulic tank, and a hydraulic control block.
  • the “casting drive” is connected to the die casting mold via a “casting set” .
  • a Giessgarnitur consists of a Giesskolbenstange, which is coupled at its one end to the drive piston casting cylinder, a casting piston which is coupled to the mold-side end of the casting piston rod, and a casting chamber in which the casting piston can move and in the casting chamber filled melt through can press its movement into the die casting mold.
  • the casting chamber is connected to at least one mold cavity in the die casting mold.
  • a casting assembly is associated with each casting drive, ie a respective casting assembly is the link between a specific casting drive and the die casting mold.
  • Die casting machines are well known. A distinction is made between the casting assembly between a cold chamber and a hot chamber die casting machine.
  • a hot chamber die casting machine the casting container is held in a crucible with molten metal.
  • a casting piston moves into the casting container and presses the molten metal through a casting container, which is likewise at least partially arranged in the crucible, into the casting mold. Casting containers and casting pistons are permanently exposed to molten metal in this process.
  • the Giessgarnitur a hot chamber die casting machine is basically designed differently than that of a cold chamber die casting machine.
  • the metal is melted in a separate apparatus and kept warm in a molten state in a holding furnace.
  • the amount of molten metal required for producing the desired component is introduced into a cold casting chamber via a filling opening and pressed into the casting mold with the aid of a casting piston movably arranged in the casting chamber.
  • Cold chamber and hot chamber die casting machines are well known to those skilled in the art. According to the present invention, cold chamber die casting machines are preferred.
  • the present invention may be practiced with horizontal die casting machines or vertical die casting machines. Horizontal die casting machines are preferred according to the invention.
  • Die casting machines are designed as so-called 3-plate machines or 2-plate machines.
  • the movable platen is moved on usually four guide columns by means of a supported on an additional third plate toggle mechanism relative to the fixed platen.
  • the closing force is also generated via the toggle mechanism.
  • the movement of the movable platen on usually four guide columns by means of a motor and lock cylinder.
  • the closing force is transferred to the movable platen with the aid of tensioning cylinders, with which the guide columns can be fixed to the movable platen.
  • 2-plate die casting machines are preferred.
  • a preferred 2-plate die casting machine is in the WO 2008/131571 A1 described.
  • the present invention can be carried out both with conventional die casting machines and with vacuum die casting machines or other special designs of die casting machines.
  • the person skilled in the corresponding die casting machines are known.
  • the Giessgarnitur is arranged on the fixed platen and connected via a connecting channel with the cavity in the form formed by the two mold halves in the closed state.
  • the inventive die casting machine has at least two casting drives. According to a preferred embodiment of the present invention, the die casting machine has exactly two casting drives. If necessary, however, further casting drives may also be present, so that the die-casting machine according to the invention may preferably have from 2 to 10 casting drives. Since, according to the invention, each casting drive is associated with a casting assembly, as described above, the diecasting machine according to the invention has the same number of casting assemblies, ie at least two, preferably two to ten and particularly preferably exactly two casting assemblies.
  • the Giessgarnituren the die casting machine according to the invention should preferably be arranged on the fixed platen so that the flow paths of the molten metal are kept as short as possible.
  • the two or each two Giessgarnituren (and corresponding to the associated Gielichriebe) are arranged horizontally next to each other or vertically above one another or diagonally, preferably symmetrically about the center of the back surface of the fixed platen. More preferably, the two or two sets of each are located close to (i.e., typically 10 to 50 cm apart, depending on the size of the runners) around the center of the back surface of the fixed platen.
  • the Giessgarnituren can also be disposed decentralized on the back surface, preferably within the area between the column nuts on the back surface, the fixed platen, for example in the left or right part of the back surface of the fixed platen.
  • casting drives for example 2, 4, 6, 8 or 10 casting drives, particularly preferably 2 casting drives, which are arranged in pairs around the center of the rear face of the fixed clamping plate are arranged.
  • the die casting machine preferably comprises a fixed clamping plate, which has recesses and / or fastening devices for the at least two, preferably two, casting drives.
  • the Giessgarnituren are arranged on the fixed platen that part of the Giessgarnitur, usually the casting chamber, arranged in a recess in the fixed platen and fixed there.
  • the arranged in the fixed platen part of the Giessgarnitur may protrude from the side facing away from the casting drive side of the fixed platen and protrude into an opening of the formable on the inside of the fixed platen mold half, or be connected to this opening via a connecting channel.
  • appropriate connecting channels are provided in the fixed clamping plate, via which molten metal can be conveyed from the casting chamber into the casting mold.
  • the Giessgarnituren in this case have an opening which communicate with a corresponding opening of a connecting channel.
  • the Giessgarnituren can be fed from the same container with molten metal. But it is also possible to provide for each Giessgarnitur a separate storage container for molten metal, from which the corresponding Giessgarnitur is charged with molten metal. According to the invention, the molten metal from all conventionally used in die casting metals and metal alloys be prepared. But it can also be used for example salt mixtures for the production of salt cores.
  • a plurality of cavities provided in a casting mold are preferably filled with the aid of the at least two, preferably two, casting drives.
  • Molds with multiple cavities are known.
  • multi-cavity molds a particular casting can be made in a single pour cycle in multiple runs.
  • combination molds or unit molds different castings can be made in a single pour cycle in duplicate.
  • combination molds or unit molds casting molds having a larger number of cavities or having larger cavities can be used with the die casting machine according to the invention.
  • the use of such molds is in conventional die casting molds due to the use Such forms associated significant increase in explosive force and to be applied to compensate high closing power not possible.
  • the present invention thus also relates to a casting mold for a die casting machine, constructed from two mold halves, which at least one, preferably several, cavities provides, characterized in that the casting mold comprises at least two, preferably two openings, via which the casting mold can be filled with molten metal.
  • a casting mold according to the invention comprises, like conventional casting molds, two mold halves which can each be arranged on a movable and a fixed clamping plate of a die casting machine.
  • Each mold half comprises on its inside, ie the side which is not attached to the movable or fixed platen, one or more Recesses, which form the mold cavity (s) in the state of joining the two mold halves.
  • Each mold half also comprises on its inside one or more recesses which form connecting channels in the state of joining the two mold halves, which lead to at least two, for example 2 to 10 and preferably two openings, which is present in the mold half to be arranged on the fixed platen and by which molten metal can be filled into the mold cavity (s).
  • the casting molds which can be used according to the invention thus have a plurality of openings, so that cavities present in the casting mold can be filled simultaneously by a plurality of different casting drives during a casting cycle.
  • Embodiments of the invention can be used with reference to the Fig. 4b and 5b explained in more detail.
  • the mold comprises at least two cavities of the same dimension, which can be filled with molten metal through separate openings.
  • This embodiment is modeled on a conventional multi-cavity mold.
  • the casting mold comprises at least two cavities of different dimensions, which can be filled with molten metal through separate openings.
  • This embodiment is modeled on a conventional combination or unit shape.
  • the number of cavities provided in the casting mold depends on the size of the castings to be produced and can be, for example, 2 to 10, preferably 2 to 4.
  • a significant advantage of the die casting machine according to the invention is that the casting process in the mold cavities can be carried out sequentially, i. not all existing mold cavities are filled with molten metal at the same time. This ensures that the explosive force during the casting process also arises only sequentially, namely at the positions of the cavities just filled with molten metal.
  • a die casting machine in which the movable platen is movable along preferably four guide columns, and additionally preferably on the movable platen fastening devices, preferably clamping cylinders, are preferably arranged for the four guide columns.
  • a corresponding die casting machine is from the WO 2008/131571 A1 known.
  • the required closing force is provided by the guide columns are fixedly fixed to the movable platen in the closed state, preferably via arranged on the movable platen clamping cylinder. Since preferably the passages for the four guide columns and the corresponding clamping cylinders are located at the four corners of the movable platen, the resulting forces are absorbed evenly by the movable platen and ensures stable operation of the die casting machine.
  • the diameters of the guide columns can be reduced by 20-40%, preferably 20-30%, and the dimensions of the clamping plates by 20-40%, preferably 20-30%, be increased.
  • the term "essentially” is to be interpreted as meaning that deviations of ⁇ 10% from the solidification time of the gating of the casting formed in the previous step in a part of a cavity or cavities.
  • molten metal must be metered into the casting chambers of further casting sets and from there conveyed by means of the casting or other casting drives into further mold cavities.
  • molten metal is usually produced in a separate container and then filled with suitable aids (for example a ladle or a dosing oven) through an opening in the casting chamber.
  • suitable aids for example a ladle or a dosing oven
  • the filling of cavities of a mold is also known.
  • a casting piston arranged in a casting cylinder, the other end of which is in the casting chamber in a position that molten metal can be filled through the filling opening in the casting chamber, is moved into the casting chamber by the action of force, preferably hydraulically.
  • the casting piston passes through the filling opening in the casting chamber and closes it against the environment.
  • the casting piston is moved into the casting chamber in three different phases, applying different pressures and velocities. In the first phase, a slow advance of the casting piston within the casting chamber occurs until the molten metal has been conveyed to the entrance of the mold cavity (i.e., to the gate).
  • the mold cavity is filled very quickly (typically within 10 to 120 ms, depending on the wall thickness and the flow length) by the casting piston is moved forward very quickly.
  • a high pressure typically greater than 200 bar to 1200 bar
  • the volume loss resulting from liquid to solid in the mold cavity during the phase transition of the molten metal is compensated for by feeding molten metal ,
  • this increase in production is made possible by the fact that the existing cavity spaces are filled sequentially with different casting drives.
  • a time delay is maintained, which corresponds essentially to the solidification time of the gating of the casting formed in the previous step in a part of a cavity or cavities.
  • this time delay is preferably 2 to 10 seconds, more preferably 3 to 6 seconds.
  • a "gate” is understood to mean the interface of the casting between the casting and the connecting channel, which is formed by solidification of the molten metal outside the cavity (s), ie in the connecting channels to the molding cavity or cavities. The gate is removed from the casting at the end of the actual casting cycle.
  • the time for a casting cycle according to the invention does not increase as a result of the time delay to be observed, since the gates occurring in accordance with the invention are generally smaller than conventional gates and solidify faster.
  • molten metal may be metered into the casting chamber of the next casting composition with the aid of which the filling of the next part of a cavity or cavities is to take place.
  • the next dosing step begins at the same time as the "shot" (filling of a portion of cavities) with the aid of the preceding casting drive, so that the method according to the invention can be carried out as quickly and efficiently as possible.
  • the required closing force can be provided localized by the guide columns are fixedly fixed to the movable platen in the closed state, preferably on arranged on the movable platen clamping cylinder, but only on those clamping cylinder in the vicinity of the moment filled with molten metal cavity (s).
  • a first step of the casting cycle only cavities which are located in the upper part of the casting mold can be filled.
  • inventive method is preferably controlled by means of an appropriate software, as sold, for example, by the applicant under the name Dat @ net.
  • each casting drive is independently controlled and regulated.
  • the inventive die casting machine is relatively compact, since only short distances between mold cavities and corresponding casting chambers must be provided. This also reduces the metal consumption (less burnup, less melting) as well as the energy costs associated with melting or burning.
  • the above compact design also ensures that each casting receives the optimum amount of molten metal in the process according to the invention. In contrast to conventional die casting processes, there are no problems with multiple casts in cavities which are far away from the casting system or in an unfavorable position / position.
  • the present invention thus also relates to the use of a die-casting machine described above or a casting mold described above for the production of castings, preferably castings for the automotive industry or the electronics sector.
  • the present invention is suitable for the production of structural parts in the automotive sector of the compact or upper middle class and can thus make an important contribution to the achievement of CO 2 goals.
  • hard-to-feed, preferably thick-walled castings can also be produced with the present invention by, for example, using a casting drive as the main casting drive and a further casting drive as the feeding aggregate for the thick-walled area.
  • components can be produced batchwise (ie, a casting and a mirror-image cast piece are produced in a casting cycle, for example, to be installed on the left and right side of a vehicle Components) "just in time” are produced.
  • the present invention may also produce castings of various metal alloys in a mold cavity by, for example, fitting a portion of the casting with a metal alloy fed from a first casting drive and another portion of the casting with another metal fed from a second casting drive Alloy is poured. This is particularly advantageous for castings with different requirements in the different component zones (normal strength, high strength, ductile and high ductile in the crash area).
  • the present invention thus also relates to a casting, preferably produced by the method described above, characterized in that the casting is in one piece and comprises at least two sections which are constructed of different materials, preferably different metals or metal alloys.
  • the casting 2 to 10 preferably have exactly two such different sections.
  • integral is understood to mean that the casting is produced in one working step, for example in a mold cavity during a casting process, and is not produced from two separately manufactured components by subsequent assembly of the separate components.
  • a conventional die casting machine is shown, as for example in the WO 2008/131571 A1 is described.
  • Such a die casting machine according to the invention preferably equipped with at least two Giessantrieben and correspondingly at least two Giessgarnur and used.
  • a two-plate horizontal die-casting machine which has a machine bed 1 with a perpendicular thereto arranged fixed platen (FAP) 2 and a movable on the machine bed 1 movably arranged movable platen (BAP) 3.
  • FAP fixed platen
  • BAP movable platen
  • the BAP 3 has a, preferably closed frame with two feet 7, struts 5 and ribs 6 and an ejector unit 14 for ejecting molded components.
  • FAP 2 and BAP 3 are each a mold half of a mold 16 are arranged.
  • the BAP 3 is guided in four columns 8, which in turn are stored in the FAP 2.
  • Each column 8 is associated with a tensioning device 9 arranged on the BAP, by means of which the closing force is applied to the respective column 8 during firing.
  • the pillar protection tube 4 integrated into the BAP 3 prevents contamination of the column toothing.
  • Between the lower columns 8 a lock cylinder 10 is provided between the lower columns 8 a lock cylinder 10 is provided.
  • Column ejection cylinders 13, which are arranged or fastened to the latch 11 or the BAP 3, are arranged on the column coupling 12.
  • a drive group 15 is provided on the machine bed 1.
  • Fig. 1 the casting drive of the die casting machine is not shown.
  • FIG. 2 an embodiment of the inventive die casting machine is shown with two vertically superposed Giessantrieben and Giessgarnituren which on a Die casting machine accordingly Fig. 1 are arranged.
  • Same reference numerals in FIG Fig. 1 and 2 denote the same components.
  • the casting chamber 19a contains the end of a casting piston whose other end is arranged in a casting cylinder 18a and can be hydraulically operated there.
  • the casting chamber 19b contains the end of a casting piston whose other end is arranged in a casting cylinder 18b and can be hydraulically operated there.
  • the casting chambers are symmetrically arranged around the center of the fixed platen 2 in this embodiment and secured in corresponding recesses in the fixed platen 2.
  • the casting chambers can always be located anywhere on the fixed clamping plate in the area between the guide columns.
  • the exact configuration of the diecasting machine according to the invention can be adapted depending on the casting to be produced.
  • a here only schematically indicated component 17 represents the other components of the casting drives (hydraulic drive).
  • Fig. 3 a further embodiment of the inventive die casting machine is shown with two horizontally juxtaposed Giessantrieben and Giessgarnituren, which corresponds to a die casting machine accordingly Fig. 1 are arranged. Same reference numerals in the Fig. 1 to 3 denote the same components.
  • the casting chambers are arranged side by side symmetrically about the center of the fixed platen 2 and fixed in corresponding recesses in the fixed platen 2.
  • Fig. 4a a schematic embodiment of a conventional multi-cavity mold 20 is shown.
  • the casting mold has a plurality of (here 6) identical cavities 21 whose dimensions correspond to the dimensions of the castings to be produced.
  • the cavities 21 are connected to one another and to an opening 23 via connection channels 22.
  • the opening 23 is open to the casting drive when the mold 20 is arranged in the die casting machine, and can be filled with molten metal from the casting drive. From the opening 23, the molten metal under pressure flows through the connection channels 22 into the cavities 21.
  • FIG. 4b a schematic embodiment of an inventive multi-cavity mold 24 is shown, wherein like reference numerals in the Fig. 4a and 4b denote the same components.
  • the casting mold 24 according to the invention has two openings 23a and 23b, which are in contact with cavities 21a and 21b via respective connecting channels 22a and 22b.
  • Each of the openings 23a and 23b is open to one of the casting drives, when the mold 24 is arranged in the die casting machine, and can be filled with molten metal from these casting drives. From the openings 23a, 23b, the molten metal under pressure flows through the connection channels 22a, 22b into the cavities 21a and 21b.
  • FIG. 4b are schematically and exemplarily 8 cavities 21a and 21b shown, but as stated above, the number of possible cavities 21a and 21b vary.
  • inventive mold 24 according to Fig. 4b can they upper cavities 21a are filled independently of the lower cavities 21b by a separate casting drive, and vice versa.
  • FIG. 5a an embodiment of a conventional combination mold 25 is shown.
  • the casting mold has a plurality of (here 3) identical cavities 21 and a cavity 26 different therefrom, the dimensions of which correspond to the dimensions of the castings to be produced.
  • the cavities 21 and 26 are connected to each other and to an opening 23 via connecting channels 22.
  • the opening 23 is open to the casting drive when the mold 25 is arranged in the die casting machine, and can be filled with molten metal from the casting drive. From the opening 23, the molten metal under pressure flows through the connection channels 22 into the cavities 21 and 26.
  • FIG. 5b an embodiment of an inventive combination mold 27 is shown, wherein like reference numerals in the Fig. 5a and 5b denote the same components.
  • the inventive casting mold 27 has two openings 23a and 23b which are in contact with cavities 21 and 26 via respective connecting channels 22a and 22b.
  • Each of the openings 23a and 23b is open to one of the casting drives, when the mold 27 is arranged in the die casting machine, and can be filled with molten metal from these casting drives. From the openings 23a, 23b, the molten metal under pressure flows through the connection channels 22a, 22b into the cavities 21 and 26.
  • Fig. 5b are schematic and exemplary 4 cavities 21st however, as stated above, the number of possible cavities 21 may vary.
  • the inventive mold 27 has a larger cavity 26 than the conventional mold 25.
  • the right cavities 21 can be filled independently of the left cavity 26 by a separate casting drive, and vice versa.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP14163832.0A 2014-04-08 2014-04-08 Machine et procédé de coulée sous pression pour la fabrication de plusieurs pièces de fonderie Withdrawn EP2929957A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14163832.0A EP2929957A1 (fr) 2014-04-08 2014-04-08 Machine et procédé de coulée sous pression pour la fabrication de plusieurs pièces de fonderie
PCT/EP2015/057485 WO2015155170A1 (fr) 2014-04-08 2015-04-07 Machine de coulée sous pression et procédé de coulée sous pression pour la production de pièces de fonte

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EP14163832.0A EP2929957A1 (fr) 2014-04-08 2014-04-08 Machine et procédé de coulée sous pression pour la fabrication de plusieurs pièces de fonderie

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CN108637204A (zh) * 2018-07-13 2018-10-12 安徽思源三轻智能制造有限公司 一种冷室压铸机
CN114603103A (zh) * 2022-03-10 2022-06-10 宁波力劲科技有限公司 一种多工位冷室压铸机头板及冷室压铸机
CN119387540A (zh) * 2024-12-31 2025-02-07 宁波力劲科技有限公司 一种单双压射压铸机及其头板设计方法

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DE202017101592U1 (de) * 2017-03-20 2018-06-25 Martin Baumann Druckgussform
CN108672673A (zh) * 2018-08-03 2018-10-19 襄阳美利信科技有限责任公司 一种压铸机的双冲头压射结构
CN118513527A (zh) * 2020-10-20 2024-08-20 深圳领威科技有限公司 压铸机及压铸方法
CN115608947B (zh) * 2022-09-09 2025-08-01 安徽省臻实机械制造有限公司 一种高强度井盖生产用压模装置

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