WO2018063023A1 - Procédé de production de fil laminé à partir d'un alliage thermorésistant à base d'aluminium - Google Patents
Procédé de production de fil laminé à partir d'un alliage thermorésistant à base d'aluminium Download PDFInfo
- Publication number
- WO2018063023A1 WO2018063023A1 PCT/RU2016/000654 RU2016000654W WO2018063023A1 WO 2018063023 A1 WO2018063023 A1 WO 2018063023A1 RU 2016000654 W RU2016000654 W RU 2016000654W WO 2018063023 A1 WO2018063023 A1 WO 2018063023A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wire rod
- temperature
- melt
- coils
- alloy
- Prior art date
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 title abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 34
- 239000000956 alloy Substances 0.000 claims abstract description 34
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 21
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000155 melt Substances 0.000 claims abstract description 16
- 238000002425 crystallisation Methods 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 230000008025 crystallization Effects 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000005275 alloying Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000002791 soaking Methods 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 12
- 238000005266 casting Methods 0.000 description 10
- 239000002244 precipitate Substances 0.000 description 10
- 230000007423 decrease Effects 0.000 description 8
- 238000000137 annealing Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 229910052706 scandium Inorganic materials 0.000 description 5
- 238000005098 hot rolling Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 4
- 229910052684 Cerium Inorganic materials 0.000 description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005496 eutectics Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910021365 Al-Mg-Si alloy Inorganic materials 0.000 description 1
- 229910018580 Al—Zr Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910019018 Mg 2 Si Inorganic materials 0.000 description 1
- 229910001122 Mischmetal Inorganic materials 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
Definitions
- the invention relates to the field of metallurgy and can be used to obtain products for electrical purposes that can operate at elevated temperatures, in particular: wires of high voltage power lines (power lines), vehicle on-board wires, wires of oil and gas complex devices and other products.
- power lines high voltage power lines
- vehicle on-board wires wires of oil and gas complex devices and other products.
- the initial billet in most cases is a wire rod, for the production of which the following basic operations are performed: melt preparation, crystallization of the melt into a billet of infinite length, hot deformation of the billet into a wire rod, winding of wire rod into measured bays.
- Rod refers to the shape of the metal in the form of a bar, usually produced by hot rolling on a multi-roll mill, which is a workpiece for subsequent wire production.
- Al-Mg-Si alloys (bxxx series) are characterized by a higher level of strength properties, in particular, alloys of type 6101 are widely used for the production of self-supporting insulated wires.
- alloys of the bxxx series are characterized by relatively low heat resistance, which usually does not exceed 90 ° C, which is associated with the following processes during heating:
- alloys of this type is an aluminum nickel-containing material and a method for producing the product disclosed in Southwire's US3830635.
- the material is characterized by a conductivity of 57% IACS and contains (mass%) 0.20-1.60 nickel, 0.30-1.30 cobalt, the rest is aluminum and impurities.
- the material may contain 0.001-1.0%) iron and magnesium.
- the method of obtaining the product includes the following basic operations: the continuous preparation of the billet from the melt between the rotating rolls, hot rolling of the billet in a multi-roll mill to a wire rod and wire drawing.
- the method for producing the melt involves the introduction of additional elements (wt.%), In particular, misch metal, niobium, tantalum and zirconium.
- the disadvantages of this method include the achievement of relatively low values of electrical conductivity (at the level of 57% IACS) and the relatively high cost of cobalt, which limits the use of this material in mass production, such as wires for high voltage power lines.
- a significant increase in thermal stability at elevated temperatures without significant deterioration (not more than 3%) of the electrical conductivity of aluminum wire can be achieved by introducing small additives of transition metals, in particular zirconium and / or other transition metals.
- the method for producing a heat-resistant wire with a minimum level of electrical resistance from a Zr-containing alloy in this case usually includes the following operations: forming a cast billet in a continuous or semi-continuous way, deforming the cast billet into a wire rod, heat treating the wire rod and drawing the wire rod into the wire.
- the manufacturing method relates to a material containing 250-1200 ppm of scandium and the rest of the impurity.
- the alloy may contain up to 0.1 wt.% Zirconium.
- the method includes the following stages: preparing a melt containing aluminum, scandium and inevitable impurities, obtaining a cast billet from the melt, rolling the billet and drawing the wire without the use of stabilizing annealing.
- the disadvantages of this method include the high final cost of the resulting product due to the content of scandium and the limited resource base for scandium.
- the description does not show the absolute level of strength characteristics of the obtained wire from Sc-containing aluminum alloy.
- the method provides a conductivity of at least 58% IACS, which in some cases is insufficient.
- the objective of the invention is to create a new method for producing wire rod from a heat-resistant alloy based on aluminum, containing zirconium as the main alloying element, ensuring the simultaneous achievement of high electrical conductivity (not lower than 60% IACS) and a high level of mechanical properties, including those remaining at 90 % of the initial after high-temperature heating up to 300 ° C.
- the technical result is the solution of the problem, increasing the heat resistance of the aluminum-based alloy while ensuring the required electrical conductivity, achieved without the use of long time exposures during heat treatment.
- the solution of this problem and the achievement of the specified technical result is ensured by the fact that a method for producing wire rod from a heat-resistant aluminum-based alloy characterized by a conductivity of at least 60% IACS containing zirconium in an amount of 0.20-0.52 wt.% And unavoidable impurities, including melt preparation, obtaining a cast billet of infinite length by crystallization of the melt, obtaining a wire rod of infinite length by hot deformation of the cast billet, winding the wire rod in bays of measured length, thermal abotku the reforming by heating and holding at a preset temperature.
- the crystallization of the melt is carried out at a temperature of 5 ° C above the liquidus temperature of the alloy, the maximum temperature of the wire rod after hot deformation is not more than 300 ° C, the heat treatment of the coils of wire rod is carried out at a maximum heating temperature of 415 ° C for no more than 144 hours, while heating in the temperature range 300 ⁇ 10 ° C not higher than 15 ° C / h.
- the structure of the conductive material should be an unalloyed aluminum solution distributed in it secondary precipitates of a Zr-containing phase with a size of up to 20 nm with a lattice type Ll 2 .
- the effect of increasing conductivity is achieved by reducing the concentration of zirconium in the aluminum solution and the formation of secondary precipitates of the Zr-containing phase.
- the effect of increased heat resistance in this case is achieved due to the positive effect of the secondary emissions of the zirconium phase, which are resistant to high temperature heating.
- the reduction of the heat treatment time necessary to achieve the required characteristics is achieved due to the uniform decay of the zirconium phase with a size of up to 20 nm, the release of which is preceded by the formation of “pre-precipitations” in the process of controlled heating.
- Zirconium in an amount of 0.20-0.52 wt.% Is necessary for the formation of secondary precipitates of the metastable phase Al 3 (Zr) with a crystal lattice Ll 2 .
- zirconium is redistributed between the aluminum solution and the secondary precipitates of the metastable phase Al 3 Zr with a lattice of the Ll 2 type, the maximum fraction of the latter being in the range of 0.31-0.91 mass. %
- a higher zirconium content than 0.52% in an aluminum solution leads to a decrease in thermal conductivity and a decrease in electrical conductivity below 60% IACS.
- concentrations above Zr above 0.52% an increase in casting temperature will be required significantly above 800 ° C ( Figure 1), which is difficult to achieve under industrial conditions, otherwise it is possible to form in the structure of the cast billet primary crystals of a phase with a lattice of type D0 23 .
- the presence in the structure of Zr particles with a lattice of type D0 23 is unacceptable due to the failure to provide the required heat resistance, in addition, a decrease in manufacturability when drawing wire of thin diameters is possible.
- zirconium concentrations in the alloy below 0.20 wt.% The number of secondary precipitates of the metastable phase A1 3 Z with a lattice of type L1? will be insufficient to achieve the specified strength characteristics and heat resistance.
- a decrease in the melt temperature below the alloy liquidus temperature can lead to the formation of coarse primary crystals of the Al 3 Zr phase during crystallization and a decrease in the concentration of zirconium in the aluminum solid solution. The consequence of this will be a decrease in the number of secondary precipitates of the Zr phase in the final structure and will lead to a decrease in strength properties and heat resistance.
- the heating rate of the bays is higher than 15 ° C / h, then an uneven decomposition of the aluminum solution is possible with the formation of secondary precipitates of the Al 3 Zr phase with an Ll 2 type lattice, which will negatively affect the general level of mechanical properties, heat resistance, and increase in heat treatment time.
- the size of the secondary precipitates containing Zr may exceed 20 nm, which will negatively affect the strength properties, while the residual solubility of zirconium in the aluminum solution will be increased, which will negatively affect the electrical conductivity (Fig. .2).
- the method can also be used for heat-resistant materials containing transition metals as the main alloying elements, for example, Sc and Cr.
- the heat-resistant aluminum-based alloy may be an alloy containing zirconium and at least one element selected from the group consisting of iron and nickel.
- cast billets (with a cross-sectional area of 1256 mm 2 ) were obtained at various casting temperatures. The casting temperature of the billets was measured immediately before pouring the mold, providing a crystallization rate of 40 K / s.
- the microstructure was analyzed for the presence or absence of primary crystals of the Al 3 Zr DO23 phase.
- the structure of the cast billet was an aluminum solid solution of zirconium and other elements, a certain amount of iron-containing phases of eutectic origin.
- Such a cast billet structure is acceptable for subsequent bending and heat treatment.
- wire rod was obtained on a continuous casting and rolling unit. Further, the heat treatment of wire rod was carried out in a furnace with different heating rates. Next, wire was obtained from wire rod.
- a criterion for a positive result was the achievement of a given level of specific electrical resistance (p) of 28.5 ⁇ Ohm mm and the loss of strength properties ( ⁇ ) on the wire of not more than 10% after annealing at 400 ° C for 1 hour.
- An alloy of composition 3 (Table 1) was used for heat treatment of wire rods with a constant heating rate of 10 ° C / h and a constant annealing time of 96 hours.
- a rod with a different final temperature was obtained from an alloy of composition 3 (Table 1).
- the wire rod was heated to 390 ° C with a given heating rate of 10 ° C / h and annealed for 144 hours.
- the criterion was the heat resistance of the wire (level of drop in strength characteristics ( ⁇ )) obtained from wire rod.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Conductive Materials (AREA)
Abstract
L'invention appartient au domaine de la métallurgie et peut être utilisée pour obtenir des articles fabriqués à usage électrotechnique capables de fonctionner à des températures élevées. L'invention concerne un procédé de production de fil laminé en alliage thermorésistant qui comprend en tant que élément d'alliage principal le zirconium dans des quantités de 0,20-0,52 % en masse, qui consiste à : préparer un bain de fusion, obtenir une pièce coulée de longueur infinie par cristallisation de bain de fusion, obtenir un fil laminé de longueur infinie par déformation à chaud de la pièce coulée, enrouler le fil laminé pour former des bottes de longueur mesurable, effectuer le traitement thermique des bottes de fil laminé par chauffage et retenue à température voulue. La cristallisation du bain de fusion s'effectue à une température de plus de 5°C que la température de liquidus, la température maximale du fil laminé après la déformation à chaud étant maintenue à un niveau de 300°C au maximum, le traitement thermique des bottes du fil laminé s'effectuant à une température de chauffe inférieure ou égale à 415°С pendant pas plus de 144 h, la vitesse de chauffe des bottes dans l'intervalle de températures de 300-400°С ne dépassant pas 15°C/h. Le résultat technique consiste en une meilleure résistance thermique de l'alliage à base d'aluminium et assurer une conductivité électrique désirée, ce qui est obtenu sans utilisation d'intervalles temporels prolongés lors d'un traitement thermique.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2017113263A RU2657678C1 (ru) | 2016-09-30 | 2016-09-30 | Способ получения катанки из термостойкого сплава на основе алюминия |
| PCT/RU2016/000654 WO2018063023A1 (fr) | 2016-09-30 | 2016-09-30 | Procédé de production de fil laminé à partir d'un alliage thermorésistant à base d'aluminium |
| CN201680031037.8A CN108603273A (zh) | 2016-09-30 | 2016-09-30 | 由耐热性铝基合金制造棒线材的方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/RU2016/000654 WO2018063023A1 (fr) | 2016-09-30 | 2016-09-30 | Procédé de production de fil laminé à partir d'un alliage thermorésistant à base d'aluminium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2018063023A1 true WO2018063023A1 (fr) | 2018-04-05 |
| WO2018063023A8 WO2018063023A8 (fr) | 2020-01-16 |
Family
ID=61763546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2016/000654 WO2018063023A1 (fr) | 2016-09-30 | 2016-09-30 | Procédé de production de fil laminé à partir d'un alliage thermorésistant à base d'aluminium |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN108603273A (fr) |
| RU (1) | RU2657678C1 (fr) |
| WO (1) | WO2018063023A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2696794C1 (ru) * | 2018-11-14 | 2019-08-06 | Федеральное государственное автономное образовательное учреждение высшего образования "Белгородский государственный национальный исследовательский университет" (НИУ "БелГУ") | Способ получения катанки из термостойкого алюминиевого сплава |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5827949A (ja) * | 1981-08-12 | 1983-02-18 | Tokyo Electric Power Co Inc:The | 導電用耐熱アルミニウム合金線の製造方法 |
| US4402763A (en) * | 1980-04-14 | 1983-09-06 | Sumitomo Electric Industries, Ltd. | High conductive heat-resistant aluminum alloy |
| JPS61238945A (ja) * | 1985-04-12 | 1986-10-24 | Furukawa Electric Co Ltd:The | 高力耐熱アルミニウム合金導体の製造法 |
| JPS63293146A (ja) * | 1987-05-26 | 1988-11-30 | Sumitomo Electric Ind Ltd | 導電用高力耐熱アルミニウム合金の製造方法 |
| RU2541263C2 (ru) * | 2013-07-01 | 2015-02-10 | Общество с ограниченной ответственностью "ЭМ-КАТ" | Проводниковый термостойкий сплав на основе алюминия |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3411760A1 (de) * | 1983-03-31 | 1984-10-04 | Alcan International Ltd., Montreal, Quebec | Verfahren zur herstellung von blech oder band aus einem walzbarren einer aluminiumlegierung |
| CN102021444B (zh) * | 2010-12-09 | 2012-08-22 | 北京科技大学 | 一种高导电耐热铝合金导线及其制备方法 |
| RU2458151C1 (ru) * | 2010-12-09 | 2012-08-10 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Алюминиевый сплав |
| WO2014088449A1 (fr) * | 2012-12-06 | 2014-06-12 | The Federal State Autonomous Educational Institution Of The Higher Professional Education "National University Of Science And Technology "Misis" | Alliage résistant à la chaleur à base d'aluminium et procédé de fabrication |
-
2016
- 2016-09-30 RU RU2017113263A patent/RU2657678C1/ru active
- 2016-09-30 CN CN201680031037.8A patent/CN108603273A/zh active Pending
- 2016-09-30 WO PCT/RU2016/000654 patent/WO2018063023A1/fr active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4402763A (en) * | 1980-04-14 | 1983-09-06 | Sumitomo Electric Industries, Ltd. | High conductive heat-resistant aluminum alloy |
| JPS5827949A (ja) * | 1981-08-12 | 1983-02-18 | Tokyo Electric Power Co Inc:The | 導電用耐熱アルミニウム合金線の製造方法 |
| JPS61238945A (ja) * | 1985-04-12 | 1986-10-24 | Furukawa Electric Co Ltd:The | 高力耐熱アルミニウム合金導体の製造法 |
| JPS63293146A (ja) * | 1987-05-26 | 1988-11-30 | Sumitomo Electric Ind Ltd | 導電用高力耐熱アルミニウム合金の製造方法 |
| RU2541263C2 (ru) * | 2013-07-01 | 2015-02-10 | Общество с ограниченной ответственностью "ЭМ-КАТ" | Проводниковый термостойкий сплав на основе алюминия |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2657678C1 (ru) | 2018-06-14 |
| WO2018063023A8 (fr) | 2020-01-16 |
| CN108603273A (zh) | 2018-09-28 |
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