EP3099436B1 - Dispositif de fabrication d'un bloc-cylindres par un procédé de moulage basse pression ou par gravité - Google Patents

Dispositif de fabrication d'un bloc-cylindres par un procédé de moulage basse pression ou par gravité Download PDF

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Publication number
EP3099436B1
EP3099436B1 EP15701711.2A EP15701711A EP3099436B1 EP 3099436 B1 EP3099436 B1 EP 3099436B1 EP 15701711 A EP15701711 A EP 15701711A EP 3099436 B1 EP3099436 B1 EP 3099436B1
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EP
European Patent Office
Prior art keywords
casting method
cylinder
producing
low
cylinder crankcase
Prior art date
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Application number
EP15701711.2A
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German (de)
English (en)
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EP3099436A1 (fr
Inventor
Ludger Urhahn
Herbert MÖDING
Eckhart Metzger
Christian Klimesch
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KS Huayu Alutech GmbH
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KS Huayu Alutech GmbH
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Application filed by KS Huayu Alutech GmbH filed Critical KS Huayu Alutech GmbH
Priority to PL15701711T priority Critical patent/PL3099436T3/pl
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/082—Sprues, pouring cups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/04—Machines or apparatus for chill casting
    • 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
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars 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
    • B22D23/02—Top casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D35/00—Equipment for conveying molten metal into beds or moulds
    • B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel

Definitions

  • the invention relates to a device for producing a cylinder crankcase in the low-pressure or gravity casting with an outer mold with moldings that form a casting mold the outer contour of the cylinder crankcase mold cavity in the assembled state, a metering furnace containing liquid metal and at least one gate, which geodetically below the mold cavity is arranged and via which the metering furnace is fluidically connectable to the mold cavity.
  • each gate is connected to a sprue bush, which projects into a cylinder space of the cylinder crankcase forming portion of the mold cavity, is achieved that a directional solidification in the range of massive sections, such as the bearing block and the Screw pipes is achieved, so that in these areas high strength results from low Dendritenarmabnies. At the same time these areas can also be refilled during solidification through the direct connection to the sprue, so that voids are avoided by shrinkage during cooling.
  • the sprue bushes are designed as lost sprue bushes, which are expressed after casting from the crankcase side.
  • the lost sprue bushings are made of fiber materials, ceramic materials, foundry mold materials or a combination of these materials. This results in a simple and cost-effective production of sprue bushes.
  • the sprue bushings have a cylindrical channel from which channels extend at an angle through the side walls delimiting the sprue bushing. Through these channels, the connection takes place a directed filling and feeding of the massive sections of the cylinder crankcase, with high strength values are achieved.
  • channels are formed as transverse channels, which extend perpendicular to the cylindrical channel.
  • the arrangement of the channels preferably takes place in such a way that the channels are directed in the direction of massive casting areas of the cylinder crankcase, whereby the make-up of these areas is optimized.
  • the sprue bushings are arranged on a cylindrical part delimiting the cylinder deck, wherein the side walls thereof at least partially serve as a boundary wall for forming the cylinder space.
  • the side walls thereof at least partially serve as a boundary wall for forming the cylinder space.
  • the sprue bushes are fastened in a holding mold part extending into the cylinder space, which at least partially serves to form a boundary wall of the cylinder space.
  • the placement of the sprue bushes is simplified and done with high precision and good durability.
  • cooling molds protrude at least in areas of each cylinder space, which are arranged close to the cylinder deck or on the webs. In this way, a directed rapid solidification of the melt can be additionally achieved in these strength-critical areas and thus a fine structure with high strength can be achieved.
  • These cooling molds can be mounted as a cooling iron in the sprue bushes and used with these in the mold.
  • the holding moldings are designed as cooling molds that hold the sprue.
  • the holding moldings are designed as cooling molds that hold the sprue.
  • a further improvement results when the cylinder-top-side molded part is made of steel and can be cooled in chill casting.
  • a directed solidification by a short cooling time of the melt can be achieved on the cylinder deck, so that fine structures with high strength are the result.
  • the holding mold members each have four axially extending arms which form a circumferentially interrupted cylinder, the arms being uniformly distributed about the circumference.
  • the sprue bushing can be fastened easily and reliably.
  • this body is easy to manufacture.
  • an insulation insert is arranged in the radially inner region of the arms, which has openings corresponding to the interruptions between the arms, over which the filling of the mold takes place.
  • the interruptions are diagonal to the screw pipes, which on the one hand good filling and feeding of these areas is ensured and on the other hand, a cooling of the land area between the cylinders is ensured on the holding moldings, so that good strength values are achieved here.
  • the casting filter is arranged directly under the gate or in the sprue bush, so that no oxides or other impurities get into the casting.
  • the device Components on which the mold or the core package after filling with the molten metal can be rotated by 180 ° and decoupled from the metering furnace.
  • the temperature gradient generated by the mold filling supports directional solidification.
  • the apparatus shown has an outer mold 10 consisting of a plurality of molded parts made of steel or foundry mold materials, which has a lower part 12, two side parts 14, 16 and an upper part 18, in their interior after the molding or closing of the molded parts 12, 14, 16, 18 a mold cavity 20 is formed, which is an outer contour of a cylinder crankcase 22, the cylinder chambers 24 have geodetically facing down, while the bearing block 25 facing upward.
  • an outer mold 10 consisting of a plurality of molded parts made of steel or foundry mold materials, which has a lower part 12, two side parts 14, 16 and an upper part 18, in their interior after the molding or closing of the molded parts 12, 14, 16, 18 a mold cavity 20 is formed, which is an outer contour of a cylinder crankcase 22, the cylinder chambers 24 have geodetically facing down, while the bearing block 25 facing upward.
  • the lower mold part 12 has a filling system 26, via which the mold cavity 20 is connected to a metering furnace 28, which is arranged below the mold 10. It is a low-pressure casting machine, so that the promotion of the molten aluminum alloy from the metering furnace 28 into the mold cavity 20 by generating a pressure difference, which causes the melt is lifted from the bottom to the top.
  • the filling system 26 extends from the metering furnace 28 to a plurality of gates 30, wherein a gate 30 is formed per cylinder, which is arranged in each case centrally below each cylinder chamber 24 of the cylinder crankcase 22.
  • a casting filter 32 is arranged so that there is a 90 ° deflection of the melt stream during the mold filling in front of the casting filters 32 or in the casting filter.
  • Each gate 30 is connected to a sprue bushing 34, which in the embodiment according to the FIG. 1 has a cylindrical shape and thus substantially the cylinder chamber 24 or boundary walls 35 of the cylinder maps.
  • These sprue bushes 34 are made of a ceramic material, fiber material or a foundry material such as foundry sand or salt or a combination of these substances and aligned and fixed on the lower part 12 accordingly.
  • a cylindrical channel 36 In its interior, a cylindrical channel 36 extending along the cylinder center axis is formed. From the channel 36 extend in the present embodiment, four transverse channels 38 through the side walls 40 of the sprue bushings 34, which open into the mold cavity 20. These transverse channels 38 are distributed over the circumference according to the mass accumulations on the component and extend in the direction of screw pipes 42 of the cylinder crankcase 22, that is aligned obliquely offset from the non-visible cylinder webs of the cylinder crankcase 22. The transverse channels 38 open above cores 46 to produce a coolant jacket of the cylinder crankcase 22 in the mold cavity 20.
  • melt is lifted from the metering furnace 28 by the generation of pressure via the gate 30 in the sprue bushing 34, this melt flows through the transverse channels 38 in the mold cavity 20 and fills first the region of the downwardly facing cylinder deck 52, at which thus rapid solidification is achieved because no material in flows in this area.
  • the further filling is now increasing from bottom to top.
  • the main bearings 50 as the highest-lying parts are filled last, so that when these areas of the cylinder crankcase 22, the melt is already in the eutectic temperature and thus rapidly solidifies, whereby fine structure can be achieved with small Dendritenarmabnote, resulting in high strengths.
  • the entire solidification direction is thus from outside to inside.
  • FIGS. 2 and 3 An additional improvement of this casting result can with an embodiment according to the FIGS. 2 and 3 be achieved, wherein the same reference numerals are used below for the same components.
  • This embodiment differs from the above-described in that the lower part 12 of the casting mold 10 is made of steel and can be cooled, that is, for example, 12 cooling channels are arranged in the interior of the lower part.
  • These consist of four evenly distributed over the circumference arms 56, which serve as a chill 58, record the sprue bush 34 radially and determine the height and width of the boundary wall 35 of the cylinder during casting as in FIG. 3 can be seen.
  • the arms 56 respectively form a cylinder with circumferentially distributed interruptions 60.
  • the breaks 60 are equally distributed around the circumference as the transverse channels 38 of the sprue bushing 34.
  • an insulating insert 62 again with corresponding recesses to allow the Filling and feeding, through which a heat transfer is reduced between acting asmékokillen 58 arms 56 and the sprue bushing 34.
  • the filling of the mold cavity 20 is now carried out in the same manner as described in the first embodiment.
  • even finer microstructures on the cylinder deck 52 and in the region of the cylinder webs are achieved, since these areas are cooled directly and thus the solidification times are shortened.
  • an additional active cooling can be carried out, which leads to reduced Dendritenarmabracen and increased strength on the bearing block 25 in comparison to the already achievable by the directed filling structures.
  • a Sandgussformbyte is used as a mold 10.
  • a cooling mold 64 which is held by a cover core 66 as an additional molding.
  • the lower part 12 is formed as a bottom core, in which a casting run 68 of the filling system 26 and the leading to the sprue bushings 34 gates 30 are formed.
  • cooling molds 58 are formed in the region of the cylinder deck 52.
  • transverse runs 70 extending from the casting run 68, which lead to auxiliary gates 72, via which lateral cylinder walls can be additionally filled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Claims (17)

  1. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité, comportant
    un moule (10) extérieur avec parties de moule (12, 14, 16, 18) qui forment, en état assemblé, une cavité de moule (20) reproduisant, à des fins de moulage, un contour extérieur du bloc-cylindres (22),
    un four de dosage (28) contenant du métal liquide,
    au moins un canal de coulée (30) situé géodésiquement sous la cavité de moule (20) et par lequel le four de dosage (28) peut être relié de manière fluidique à la cavité de moule (20),
    caractérisé en ce que
    chaque canal de coulée (30) est relié à une busette (34) en saillie dans une région de la cavité de moule (20) formant une chambre de cylindre (24) du bloc-cylindres (22).
  2. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon la revendication 1, caractérisé en ce que les busettes (34) sont des busettes (34) perdues.
  3. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon la revendication 2, caractérisé en ce que les busettes (34) perdues sont fabriquées de matériaux fibreux, matériaux céramiques, matériaux de moulage de fonderie ou une combinaison de ces matériaux.
  4. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon l'une quelconque des revendications précédentes, caractérisé en ce que les busettes (34) comporte un canal (36) cylindrique à partir duquel des canaux (38) s'étendent sous un angle à travers les parois latérales (40) délimitant la busette (34).
  5. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon la revendication 4, caractérisé en ce que les canaux sont réalisés en forme de canaux transversaux (38) s'étendant perpendiculairement par rapport au canal cylindrique (36).
  6. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon l'une des revendications 4 ou 5, caractérisé en ce que les canaux (38) sont orientés vers des régions de coulée massives du bloc-cylindres (22).
  7. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon la revendication 6, caractérisé en ce que les canaux (38) sont orientés vers des pipes à vis (42) et/ou des canaux d'huile principaux (48) et/ou des section de liaison entre les points de support (50) principaux et les chambres de cylindre (24) du bloc-cylindres (22).
  8. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon l'une quelconque des revendications précédentes, caractérisé en ce que les busettes (34) sont disposées sur une partie de moule (12) délimitant une plate-forme de cylindre (52), les parois latérales (40) des busettes servant au moins en partie comme paroi limite (35) pour former la chambre de cylindre (24).
  9. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon l'une des revendications 1 à 7, caractérisé en ce que les busettes (34) sont fixées dans une partie de moule de retenue (54) s'étendant dans la chambre de cylindre (24), qui sert au moins en partie pour former la paroi de délimitation (35) de la chambre de cylindre (24).
  10. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon l'une quelconque des revendications précédentes, caractérisé en ce que des coquilles de refroidissement (58) saillent au moins dans des régions de chaque chambre de cylindre (24) disposées près de la plate-forme du cylindre (52) ou des ponts entre cylindres.
  11. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon la revendication 9, caractérisé en ce que les parties de moule de retenue (54) sont réalisées sous forme de coquilles de refroidissement (58).
  12. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie de moule (12), côté plate-forme de cylindre, est en acier et peut être refroidie.
  13. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon l'une des revendications 9 à 12, caractérisé en ce que chaque partie de moule de retenue (54) comprend quatre bras (56) s'étendant axialement et formant un cylindre interrompu sur sa circonférence, les bras (56) étant reparti régulièrement sur la circonférence.
  14. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon la revendication 13, caractérisé en ce qu'un insert isolant est disposé dans la région radialement intérieure des bras (56), l'insert comportant des évidements (64) correspondant aux interruptions (60) entre les bras (56).
  15. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon l'une des revendications 13 ou 14, caractérisé en ce que les interruptions (60) sont orientées diagonalement vers les pipes de vis (42).
  16. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un filtre de moulage (32) est disposé directement sous le canal de coulée (30) ou dans la busette (34).
  17. Dispositif de fabrication d'un bloc-cylindres (22) par un procédé de moulage basse pression ou par gravité selon l'une quelconque des revendications précédentes, caractérisé en ce qu'après le remplissage avec le métal fondu, le dispositif comprend des éléments à l'aide desquels le noyau de fonderie (10) peut être tourné par 180° et peut être découplé du four de dosage (28).
EP15701711.2A 2014-01-29 2015-01-15 Dispositif de fabrication d'un bloc-cylindres par un procédé de moulage basse pression ou par gravité Active EP3099436B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15701711T PL3099436T3 (pl) 2014-01-29 2015-01-15 Urządzenie do wytwarzania bloku cylindrowego metodą odlewania niskociśnieniowego lub grawitacyjnego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014101080.9A DE102014101080B3 (de) 2014-01-29 2014-01-29 Vorrichtung zur Herstellung eines Zylinderkurbelgehäuses im Niederdruck- oder Schwerkraftgießverfahren
PCT/EP2015/050639 WO2015113821A1 (fr) 2014-01-29 2015-01-15 Dispositif de fabrication d'un bloc-cylindres par un procédé de moulage basse pression ou par gravité

Publications (2)

Publication Number Publication Date
EP3099436A1 EP3099436A1 (fr) 2016-12-07
EP3099436B1 true EP3099436B1 (fr) 2017-12-27

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ID=52434752

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Application Number Title Priority Date Filing Date
EP15701711.2A Active EP3099436B1 (fr) 2014-01-29 2015-01-15 Dispositif de fabrication d'un bloc-cylindres par un procédé de moulage basse pression ou par gravité

Country Status (13)

Country Link
US (1) US9718124B2 (fr)
EP (1) EP3099436B1 (fr)
JP (1) JP6324520B2 (fr)
KR (1) KR101962525B1 (fr)
CN (1) CN106029253B (fr)
BR (1) BR112016015545B1 (fr)
DE (1) DE102014101080B3 (fr)
HU (1) HUE038110T2 (fr)
MX (1) MX2016009775A (fr)
NO (1) NO2756167T3 (fr)
PL (1) PL3099436T3 (fr)
RU (1) RU2660449C2 (fr)
WO (1) WO2015113821A1 (fr)

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DE102017213542A1 (de) * 2017-08-04 2019-02-07 Bayerische Motoren Werke Aktiengesellschaft Gießform sowie Verfahren zum Herstellen eines Kurbelgehäuses
DE102017124150B4 (de) * 2017-10-17 2021-01-28 Ks Huayu Alutech Gmbh Druckgussform zum Gießen von Zylinderkurbelgehäusen oder Kurbelgehäuseunterteilen
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DE102019110580A1 (de) * 2019-04-24 2020-10-29 Nemak, S.A.B. De C.V. Vorrichtung und Verfahren zur Entnahme mindestens eines Kühlelementes aus einem wenigstens teilweise entformten Gussteil, Verfahren zur Einbringung mindestens eines Kühlelementes in einen Formkern einer Gussteilform, Kühlelement sowie Gussteil
DE102019004887A1 (de) * 2019-07-11 2021-01-14 Xenios Ag Vergussvorrichtung für einen Gastauscher
CN112475275B (zh) * 2020-12-01 2021-11-30 抚州市银圣王洁具有限公司 一种用于无铅水龙头生产用重力铸造装置
CN115319064B (zh) * 2022-10-11 2022-12-23 山西恒鼎精工科技股份有限公司 一种铸造生产用的翻箱方法

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CN106029253A (zh) 2016-10-12
BR112016015545B1 (pt) 2021-01-05
US9718124B2 (en) 2017-08-01
WO2015113821A1 (fr) 2015-08-06
US20160339514A1 (en) 2016-11-24
KR20160140599A (ko) 2016-12-07
JP2017505234A (ja) 2017-02-16
NO2756167T3 (fr) 2018-06-16
PL3099436T3 (pl) 2018-06-29
MX2016009775A (es) 2017-01-26
HUE038110T2 (hu) 2018-09-28
DE102014101080B3 (de) 2015-07-30
RU2660449C2 (ru) 2018-07-06
EP3099436A1 (fr) 2016-12-07
RU2016130851A (ru) 2018-03-05
CN106029253B (zh) 2018-04-06
RU2016130851A3 (fr) 2018-03-05
KR101962525B1 (ko) 2019-07-17

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