EP0374094A1 - Méthode de déformation d'un pièce de métal - Google Patents

Méthode de déformation d'un pièce de métal Download PDF

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Publication number
EP0374094A1
EP0374094A1 EP89810916A EP89810916A EP0374094A1 EP 0374094 A1 EP0374094 A1 EP 0374094A1 EP 89810916 A EP89810916 A EP 89810916A EP 89810916 A EP89810916 A EP 89810916A EP 0374094 A1 EP0374094 A1 EP 0374094A1
Authority
EP
European Patent Office
Prior art keywords
metal
metal piece
release agent
package
piece
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.)
Granted
Application number
EP89810916A
Other languages
German (de)
English (en)
Other versions
EP0374094B1 (fr
Inventor
Jerome P. C/O Lockheed Missiles & Wittenauer
Bruno Dr. Walser
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.)
Sulzer AG
Original Assignee
Sulzer AG
Gebrueder Sulzer 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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0374094A1 publication Critical patent/EP0374094A1/fr
Application granted granted Critical
Publication of EP0374094B1 publication Critical patent/EP0374094B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/30—Foil or other thin sheet-metal making or treating
    • Y10T29/301—Method
    • Y10T29/303—Method with assembling or disassembling of a pack
    • Y10T29/304—Using transitory solid cover material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/30—Foil or other thin sheet-metal making or treating
    • Y10T29/301—Method
    • Y10T29/303—Method with assembling or disassembling of a pack
    • Y10T29/305—Method with assembling or disassembling of a pack including bond prevention treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/30—Foil or other thin sheet-metal making or treating
    • Y10T29/301—Method
    • Y10T29/308—Using transitory material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4981—Utilizing transitory attached element or associated separate material

Definitions

  • the invention relates to a method for deforming a piece of metal, namely for producing thin-walled metal parts, for example metal foils, from reactive metals, i.e. from metals that are particularly susceptible to corrosion, especially at elevated temperatures, and susceptible to oxidation.
  • the new process serves to prevent oxidation and other quality losses on parts made of the metals mentioned during hot forming.
  • Titanium alloys have been developed which have an increased resistance to corrosion.
  • such alloys can oxidize to an unacceptably high degree during mechanical forming at elevated temperatures.
  • metal parts are subjected to hot working at high temperatures during their shaping or forming.
  • This necessity of forming at high temperatures and the resulting increase in the quality losses that have occurred have led to numerous known measures in order to keep a corrosive atmosphere away from the metal pieces during this forming.
  • Such a measure is, for example, hot forming in large vacuum chambers or under a protective gas atmosphere. Both require costly facilities that make the end product more expensive.
  • an oxide layer must be removed from the metal surface by mechanical processing or another process.
  • metallic protective layers consist of or contain tin, zinc, lead / tin alloys, nickel, chrome, cadmium, copper, aluminum, bronze, brass, lead, iron and steel.
  • These metallic protective layers are applied to a metal part by a whole series of known coating processes. Such methods are, for example: dipping processes in which the object to be coated is in a Melt the protective metal is immersed, or metal hardness, in which the "protective material” is alloyed into the substrate surface to be protected, or the application of a metallic spray layer. In the spraying process, the protective layer metal is generally heated, evaporated and sprayed onto the surface to be protected at high speed. Since the metal particles hit the surface with great force, they adhere there and create a thin corrosion protection layer.
  • plating Another known method for applying a protective layer to a metal surface is so-called plating, in which a metallic substrate with low resistance to corrosion is encased by a corrosion-resistant metal in order to obtain a workpiece made of several layers.
  • the plating can be carried out by encapsulating the substrate or by electrolytic deposition of the protective layer on the substrate.
  • Another possibility is to embed a piece of metal between two layers of corrosion-resistant metal, i.e. For example, insert a flat steel plate between two aluminum disks and then cold roll the whole thing to make a three-layer structure.
  • Other methods of plating, such as fusion welding are also known.
  • the coated workpiece can then be further processed by extrusion, hot rolling, hot compression or other metal forming processes.
  • protective layers to substrates by other processes, such as sputtering or chemical or physical evaporation and condensation (CVD or PVD processes).
  • CVD or PVD processes chemical or physical evaporation and condensation
  • the protective layer must then be removed again, for example by chemical or mechanical means.
  • Dense, ductile metal foils are often used in numerous applications, for example in the space or aircraft industry. Although these foils can have a good resistance to corrosion at ambient temperatures and in the vacuum of space, they oxidize to an unacceptably high degree at high temperatures. So far, these foils have been produced by complicated and complex evaporation processes in a vacuum, in which a material, for example bearing metal, is evaporated in a vacuum. Part of the vaporized metal is then condensed onto a substrate.
  • foils can also be produced by mechanical shaping of castings or by hot rolling under vacuum.
  • US Pat. No. 2,997,784 describes a method for producing composite bodies made of metal, which consist of substrates with a plating pad; In this method, a separating agent is introduced between two plates of plating material and the base material to be plated is then contacted in contact with the uncoated “rear sides” of the plating material. The whole is then welded at the edges and rolled out to a desired thickness, the base material being welded to the plating material by pressure. The welded edges are then removed and the two clad parts of the base material are separated. It is mentioned here that calcium fluoride or other fluorides are suitable as separating agents which are sprayed onto the plating material or as aqueous solution or slurry can be applied. Furthermore, it is mentioned that the base material can also be applied to the plating material, for example, by bringing two plates of the plating material, between which the release agent is inserted, together with the base material into a casting mold into which the base material is poured.
  • U.S. Patent 3,164,884 describes a multiple plate rolling method in which top plates and side boundaries are mounted around inner plates with the surfaces between the plates being separated by release agents.
  • the lateral boundaries which are provided with ventilation holes, are welded to one another and to the cover plates by means of an arc along their outer edges.
  • Aqueous mixtures of oxides, in particular chromium, magnesium and aluminum oxide, are mentioned as release agents.
  • the vent holes allow gases to escape from the sandwich-like package during heating and rolling.
  • the method according to the invention therefore consists in that a metal piece for the production of a package consisting of several layers is packed in an envelope made of a second metal, at least a substantial part of the interfaces between the metal piece and the second metal being covered with a separating agent which becomes behaves at least largely inertly chemically, at least with respect to the metal piece, that the package is also deformed into a certain geometric shape by a method of metal deformation, and that finally both metal parts are subsequently separated from one another again.
  • the present invention achieves the object set by a method in which metals are deformed into thin platelets or foils by processes which are carried out in a natural atmosphere at ambient pressure and do not require complicated equipment or chemical aftertreatments.
  • the method described above serves primarily to mechanically deform a piece of metal at high temperatures to produce thin metal platelets from reactive, corrosion-prone metals.
  • a metal piece is protected from high-temperature corrosion during hot forming by embedding it in a, preferably plastically deformable, metal casing, a separating agent being introduced at least between the essential areas of the interfaces between the corrosion-sensitive metal piece and the corrosion-resistant casing.
  • the metal piece can be inserted into a frame made of a corrosion-resistant covering and closed with two cover disks.
  • the separating agent between the interfaces of corrosion-prone and corrosion-resistant metal is advantageously flowable at forming temperatures. It is conveniently placed in wells or pockets the wrapping stored.
  • the composite sandwich arrangement of metal frame, cover panes and release agent to be deformed is then advantageously welded along its circumference at the edge to form a package, so that the release agent is tightly enclosed between the metal parts.
  • the welded package can then be rolled out into thin sheets or foils under pressure to the desired size in a conventional hot rolling device.
  • the deformed package or laminate is cooled and the welded edges are removed.
  • the parts of the casing can then simply be peeled off from the metal piece deformed into a thin metal foil because of the separating layer made of a brittle, poorly wetting separating agent. Residues of the release agent can be removed from the metal foil produced, for example by rinsing.
  • a piece of metal 20 (FIG. 1) made of a reactive, ie corrosion-prone, metal is to be mechanically deformed into a thin metal strip or a thin metal foil.
  • the metal piece 20 is a square, already relatively thin plate before the deformation.
  • a "reactive" metal is understood to mean a metal or an alloy which is subjected to increased corrosion, in particular oxidation, at temperatures above ambient temperature.
  • the invention is used above all for the production of thin parts from high-melting metals which oxidize very quickly at elevated temperatures.
  • the invention preferably serves for the production of thin parts, in particular thin foils, made of titanium or titanium alloys, such as titanium-aluminum-vanadium or titanium-aluminum-niobium.
  • Other metals where the new process is used with advantage can be molybdenum, niobium or tungsten.
  • the invention is not limited to the materials mentioned, but can also be used with many other pure metals or alloys.
  • a metal frame 22 is shown, in which the corrosion-prone metal piece 20 is inserted for the deformation.
  • the frame 22, which consists of a corrosion-resistant metal, encloses a window-like opening 24. Its thickness corresponds essentially to the thickness of the metal piece 20.
  • the dimensions of the opening 24 are matched to the dimensions of the metal piece 20 in such a way that the piece is as accurate as possible the frame 22 or the opening 24 fits, as shown in FIG. 5.
  • corrosion-resistant or “non-reactive” metal encompasses those metals which have a high resistance to corrosion even at high temperatures.
  • these metals are said to have good hot formability and good weldability at the same time. Furthermore, these metals are said to offer sufficient protection against gas diffusion during the forming.
  • the thickness of the metal piece 20 and the frame 22 is not critical and is determined by the final mass of the finished product and the number of rolling steps in the manufacturing process.
  • the powder is cold pressed with a suitable stamp in the frame 22; the powder should have a considerable green strength without the use of binders.
  • the unit 26 (FIG. 5) comprising the frame 22 and the metal piece 20 can also be produced by forming an ingot from the corrosion-prone metal and then casting this corrosion-resistant metal around this ingot, this unit 26 being produced by simply cutting off sections from the casting will.
  • Preferred materials for the corrosion-resistant metal are iron or nickel and iron or nickel-based alloys, such as, for example, stainless steel 316. This is suitable for processing temperatures of approximately 950 to 1100 ° C. In principle, it is also possible to put this in a thin foil To pack metal piece 20 to be formed into a covering made of a metal which is also susceptible to corrosion, since the outer covering is separated from the film present as the end product after the forming.
  • cover disks 28 (FIGS. 6 and 7), which preferably consist of the same material as the frame 22; these cover disks 28 are provided with depressions or pockets 30 (FIG. 7) on their inside 32.
  • the surface area of the depressions 30 corresponds at least substantially to that of the opening 24.
  • the depressions 30 serve to receive a release agent 34. This ensures problem-free separation of the cover disks 28 from the formed workpiece, in this case from the metal piece 20 rolled out into a film.
  • the release agent 34 should be at the temperatures and pressures at which the metal piece 20 is deformed will be flowable and form a coherent film between the cover plates 28 and at least a substantial part of the surfaces of the metal piece 20.
  • the release agent 34 must also be chemically inert to the material of the metal piece 20 at the forming temperatures in order to avoid contamination and damage to the material which is susceptible to corrosion at elevated temperatures.
  • release agent 34 Metal halides, in particular fluorides of lithium, sodium, magnesium, strontium and barium, are preferably used as release agent 34. Of these, calcium fluoride has proven particularly useful as a release agent.
  • the release agent 34 can be introduced, for example, as a melt into the depressions 30. It is also possible to "evaporate" the release agent into the depressions, the edges of the inside 32 being covered.
  • the purity of the release agent 34 should be as high as possible and be at least 99%.
  • Another option for introducing the release agent 34 into the depressions 30 is flame or plasma spraying in a vacuum, with the release agent 34 being directly adhered to the cover disks 28. These thermal spraying processes have the additional advantage that air inclusions in the separating agent layer are avoided, which can lead to oxidation during the subsequent shaping of the metal piece 20.
  • the thickness of the support of the separating means 34 in the depression 30 is slightly smaller than this depression 30 itself.
  • depressions and Release agent layer shown exaggerated for clarity.
  • the thickness of the separating agent 34 should be chosen before the package 36 is formed such that a separating layer of 10 to 100 ⁇ m is present after the forming.
  • the release agent layer Before hot forming, the release agent layer has a thickness of 0.4 mm to 2 mm. The depth of the depression 30 is then selected depending on the required thickness of the release agent layer.
  • the release agent layer is too small, the release agent does not form a coherent separating layer during the forming, which can result in undesired metallurgical bonds between the two metals. Such bonds interfere with the peeling of the casing from the metal piece 20 after the hot forming.
  • at least the depressions 30 of the cover disks 28 are cleaned before the release agent is applied. It may also be necessary to clean the inner sides 32 before assembling the package 36 (FIG. 9) and welding its edges.
  • FIG. 9 of the drawings shows a package 36 of several layers with a unit 26, consisting of a frame 22 and a metal piece 20.
  • a second, completely identically constructed and arranged cover plate 28 ' is provided, so that a "sandwich-like" package 36 is formed, in which the metal piece 20 between the release agent supports 34 and 34' is embedded and is covered by the cover plates 28 and 28 'and the frame 22.
  • the weld seam therefore advantageously connects only the cover plates 28 and 28 'to the frame 22;
  • a continuous weld seam is desirable in order to avoid contamination of the metal piece 20 and the inner sides 32 of the casing from the atmosphere when the package 36 is being heated for and before the mechanical hot forming.
  • a continuous weld seam prevents liquid release agent from flowing out of the package 36.
  • the depth of the weld should have sufficient strength, at least for the first roller passes, in order to prevent the individual layers of the package 36 from shifting.
  • a particularly preferred welding process is electron welding in a vacuum, which prevents air from entering, which can cause oxidation during the subsequent hot machining.
  • the sealed package is labeled 38.
  • FIG. 11 schematically shows the mechanical processing of the welded package 38 for the production of thin metal parts, for example foils, from the material which is susceptible to corrosion. It is assumed that the invention is used for the production of such foils from pieces of metal with thicknesses of 0.1 to 10 mm, preferably approximately 0.05 to 5 mm, and especially 0.05 to 2 mm.
  • hot rolling consists in the package 38 being passed through between two rotating rollers 40 and 42 at certain temperatures and pressures.
  • the package 38 is passed between the two rollers 40 and 42 in a conventional manner to reduce its cross-section.
  • the lateral spreading that occurs creates a laminated body 44.
  • the separating agent layers 34 and 34 ' are viscous and flowable and form a coherent film which separates the metal piece 20 from the casing made of frame 22 and cover plates 28 and 28'.
  • the processing temperature in the rolling process is determined by the temperature characteristics of the release agent 34 and the metals of the package 38.
  • the isothermal should Hot rolling a temperature between 800 and 1100 ° C can be maintained. Passing the package 38 multiple times between the rollers 40 and 42 may be advantageous in some cases.
  • FIG. 12 shows the laminated body 44 to which the package 36 or 38 has been deformed after the mechanical hot forming; the metal foil 48 produced as a product is shown in broken lines in FIG. 12.
  • the laminated body 44 is cooled to a temperature at which the release agent 34 is brittle and the metal surfaces are poorly wetted.
  • it may be desirable to subject the laminate 44 to heat treatments such as annealing, precipitation reactions and / or structural rearrangements after rolling to impart desired metallurgical properties to reach.
  • the selection of a chemically stable release agent, such as calcium fluoride allows the heat-sensitive material to be heat-treated without causing contamination or loss of quality on the surfaces of the rolled film.
  • the sheath 50 (FIG. 12) is removed in the manner described below.
  • the edges 52 of the laminated body 44 are cut off, for example with the aid of a large cutting press, within the outer dimension of the film 48, which is illustrated in FIG. 12 by the cutting edges 54.
  • the trimmed laminate is shown in FIG. 13 before its casing 50 is peeled off.
  • the casing 50 can simply be peeled off from the film 48, since the release agent is brittle and brittle at ambient temperature; The unpacking of the film 48 is therefore advantageously carried out at this temperature. Suitable methods and devices for peeling or peeling the casing 50 off the film 48 are known to the person skilled in the art.
  • ductile foils which are difficult to produce due to an increased oxidation in hot forming processes, can therefore be produced in a simple manner for the space or other industries. Numerous other applications for thin sheets that have been produced using the new process are possible.
  • the multi-layer packages 36 and 38 in one place and to transfer them to a second production facility for mechanical hot forming, such as hot rolling mills or universal steel rolling mills.
  • the invention can be used for extruding structured parts by using the packing according to the invention combined with high-temperature extrusion processes.
  • a titanium foil was produced using calcium fluoride as a release agent.
  • the microstructure is completely homogeneous with no visible chemical attacks or loss of quality of the surface.
  • the microstructure inside the film is identical to that on the surface, further proof of the absence of any surface contamination.
  • Fig. 15 shows a Ti-6Al-4V film 180 ⁇ m thick, which was made from powder by cold pressing and hot rolled at 900 ° C.
  • Source material Oxygen go Ppm by weight
  • End product ⁇ m film
  • Oxygen content Ti-6Al-4V (powder) 1160 180 1830 Ti-6Al-4V (extrusion rod) 2000 110 2300 Ti-14Al-20Nb (cast) 510 220 530 Ti-14Al-20Nb (cast) 510 120 650

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Laminated Bodies (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Casings For Electric Apparatus (AREA)
EP89810916A 1988-12-14 1989-12-05 Méthode de déformation d'un pièce de métal Expired - Lifetime EP0374094B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/284,046 US5121535A (en) 1988-12-14 1988-12-14 Method for production of thin sections of reactive metals
US284046 1988-12-14

Publications (2)

Publication Number Publication Date
EP0374094A1 true EP0374094A1 (fr) 1990-06-20
EP0374094B1 EP0374094B1 (fr) 1993-05-19

Family

ID=23088658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810916A Expired - Lifetime EP0374094B1 (fr) 1988-12-14 1989-12-05 Méthode de déformation d'un pièce de métal

Country Status (6)

Country Link
US (1) US5121535A (fr)
EP (1) EP0374094B1 (fr)
JP (1) JPH082451B2 (fr)
CA (1) CA2002714C (fr)
DE (1) DE58904435D1 (fr)
ES (1) ES2042066T3 (fr)

Cited By (4)

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EP0568754A1 (fr) * 1992-05-08 1993-11-10 Sulzer Innotec Ag Fabrication de pièces métalliques minces sensitives en corrosion à hautes températures
EP0631829A1 (fr) * 1993-05-25 1995-01-04 Sulzer Innotec Ag Agent de séparation pour le forgeage à chaud de pièces étanches en métal et procédé de fabrication d'agent de séparation
WO2000025949A1 (fr) * 1998-10-29 2000-05-11 Otkrytoe Aktsionernoe Obshestvo Verkhnesaldinskoe Metallyrgicheskoe Proisvodstvennoe Obiedinenie (Oao Vsmpo) Procede de production de feuilles fines
RU2179899C1 (ru) * 2000-07-26 2002-02-27 ОАО Верхнесалдинское металлургическое производственное объединение Способ изготовления тонких листов из прочных и высокопрочных сплавов

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US6134785A (en) * 1992-05-18 2000-10-24 The Boeing Company Method of fabricating an article of manufacture such as a heat exchanger
JPH1157810A (ja) * 1997-08-14 1999-03-02 Nkk Corp チタン合金シート材の製造方法
US5903813A (en) * 1998-07-24 1999-05-11 Advanced Materials Products, Inc. Method of forming thin dense metal sections from reactive alloy powders
US6736942B2 (en) * 2000-05-02 2004-05-18 Johns Hopkins University Freestanding reactive multilayer foils
US20030211000A1 (en) * 2001-03-09 2003-11-13 Chandhok Vijay K. Method for producing improved an anisotropic magent through extrusion
US6852273B2 (en) * 2003-01-29 2005-02-08 Adma Products, Inc. High-strength metal aluminide-containing matrix composites and methods of manufacture the same
TW200901869A (en) 2007-06-21 2009-01-01 Metal Ind Res & Dev Ct Electronic casing and method of manufacturing the same
CN105458004B (zh) * 2015-12-18 2017-10-27 北京有色金属研究总院 基于可拆卸包套的低塑性难变形材料板材轧制方法
KR20240163587A (ko) * 2022-03-07 2024-11-19 소일렉트 인코포레이티드 다중 압축을 통해 생산된 저조도 리튬 금속 애노드
CN116967285B (zh) * 2023-09-22 2023-12-15 江苏铭丰电子材料科技有限公司 一种铜箔压延装置

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CH58034A (de) * 1911-08-24 1913-02-17 E R Dr Lauber Verfahren zum schichtenweisen Auswalzen von Aluminiumfolien in Bahnform
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US2645842A (en) * 1947-02-28 1953-07-21 United States Steel Corp Multiple rolling of strip
US3066384A (en) * 1958-06-18 1962-12-04 United States Steel Corp Method of making wide flat sheets
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0568754A1 (fr) * 1992-05-08 1993-11-10 Sulzer Innotec Ag Fabrication de pièces métalliques minces sensitives en corrosion à hautes températures
US5301403A (en) * 1992-05-08 1994-04-12 Gebrueder Sulzer Aktiengesellschaft Method of producing metal foil from a reactive metal sheet utilizing a hot rolling thermal pack assembly
EP0631829A1 (fr) * 1993-05-25 1995-01-04 Sulzer Innotec Ag Agent de séparation pour le forgeage à chaud de pièces étanches en métal et procédé de fabrication d'agent de séparation
US5658623A (en) * 1993-05-25 1997-08-19 Sulzer Innotec Ag Parting compound for the hot forming of encased metal parts and a process for manufacturing the parting compound
WO2000025949A1 (fr) * 1998-10-29 2000-05-11 Otkrytoe Aktsionernoe Obshestvo Verkhnesaldinskoe Metallyrgicheskoe Proisvodstvennoe Obiedinenie (Oao Vsmpo) Procede de production de feuilles fines
RU2179899C1 (ru) * 2000-07-26 2002-02-27 ОАО Верхнесалдинское металлургическое производственное объединение Способ изготовления тонких листов из прочных и высокопрочных сплавов

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CA2002714C (fr) 1999-03-02
US5121535A (en) 1992-06-16
DE58904435D1 (de) 1993-06-24
JPH02263504A (ja) 1990-10-26
EP0374094B1 (fr) 1993-05-19
JPH082451B2 (ja) 1996-01-17
CA2002714A1 (fr) 1990-06-14
ES2042066T3 (es) 1993-12-01

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