EP1537921A1 - Méthode de fabrication d'un tube multicouche pour le guidage des fluides de transfer de chaleur et tube multicouche - Google Patents

Méthode de fabrication d'un tube multicouche pour le guidage des fluides de transfer de chaleur et tube multicouche Download PDF

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Publication number
EP1537921A1
EP1537921A1 EP04028534A EP04028534A EP1537921A1 EP 1537921 A1 EP1537921 A1 EP 1537921A1 EP 04028534 A EP04028534 A EP 04028534A EP 04028534 A EP04028534 A EP 04028534A EP 1537921 A1 EP1537921 A1 EP 1537921A1
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EP
European Patent Office
Prior art keywords
tube
layer
pipe
produced
multilayer
Prior art date
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Granted
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EP04028534A
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German (de)
English (en)
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EP1537921B1 (fr
Inventor
Reiner Dr. Buck
Ralf Uhlig
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Deutsches Zentrum fuer Luft und Raumfahrt eV
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Deutsches Zentrum fuer Luft und Raumfahrt eV
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Publication of EP1537921A1 publication Critical patent/EP1537921A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/154—Making multi-wall tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/051—Deforming double-walled bodies

Definitions

  • the invention relates to a manufacturing method for a multilayer pipe for Guiding a heat transfer fluid.
  • the invention relates to a multilayer tube for guiding a heat transfer fluid.
  • Such multilayer pipes can be, for example, in solar receivers or in Insert heat exchangers. Especially in connection with solar receivers There is the problem that pipes for guiding heat transfer fluid locally different levels are applied. At a solar receiver For example, such pipes are one-sided with solar radiation applied. This causes local overheating, the thermal Tension condition. These thermal stresses can coincide the existing due to the production of mechanical stresses and the stresses caused by the operation (such as due to an internal pressure in the pipe). This leads to constraints in the design of such pipes or can the life significantly restrict a pipe.
  • the invention is based on the object, a simple production process for a multilayer pipe.
  • This object is achieved in a production method for a multilayer pipe solved according to the invention for guiding a heat transfer fluid, that a first tube is positioned in a second tube with radial clearance and a tube assembly between the first tube and the second tube produced plastic deformation of the first tube and / or the second tube becomes.
  • the composite pipe is plastic Deformation produced and not over shrinkage. This will be time-critical Cooling and heating processes avoided.
  • the exit pipes can be joined to the pipe network with higher tolerances. Long Multilayer pipes can be simplified by the method according to the invention Make way.
  • the plastic deformation for the production of the composite pipe can be under Maintaining the shape of the pipes so that it is ensured that the Symmetry before forming and after forming essentially the same is. This in turn helps to ensure that with a suitable choice of the form Stresses in the operation are minimized.
  • the plastic deformation can be carried out in a simple manner; for example can be a widening of the innermost tube over a Effective medium-based forming such as hydro-forming or via a mechanical Shaped body done.
  • the second tube in a third tube with radial clearance is positioned and a pipe connection between the second tube and the third tube by plastic deformation of the second tube and / or the third pipe is generated. It is also possible that additional additional pipe connections be produced with other tubes.
  • a deformation force is applied to the innermost one Pipe and / or the outermost tube exercised.
  • the deformation force, which causes the plastic deformation is defined adjustable.
  • the tubes, between which produced a composite pipe to be the same symmetry with respect to a longitudinal axis. If the Pipes are then positioned colinearly to the longitudinal axis and a symmetrical plastic deformation such as symmetrical expansion done, then the manufacturing result has the same symmetry as the output tubes. This can create a good bond between the layers, wherein in particular material-free areas (gaps) between adjacent Layers are minimized or the layers are fully connected. This, in turn, provides good heat transfer between the layers allows.
  • the tubes, between which produced a composite pipe is to be, a circular cross section. This can be a achieve good contact between plastically deformed pipes, so one to produce good layer composite.
  • the tubes which together be connected to each other.
  • a Deformation force for plastic deformation exercised can be achieve a symmetrical bond with uniform contact of the two tubes, wherein at least one of the tubes, which are connected to each other, is plastically deformed.
  • annular gap is formed between adjacent pipes.
  • the annular gap is preferably rotationally symmetrical, so that by a radial expansion over plastic deformation of this annular gap is closable and thus a good Layer composite is generated.
  • the outermost tube in a mold is positioned.
  • the shape then determines the outer dimensions of the Pipe network.
  • the innermost tube is widened.
  • the innermost tube is widened so far that a bond formed between adjacent tubes becomes.
  • the composite is between the inner tube and formed the adjacent tube.
  • the adjacent pipe is also deformed. If it is in a form then the shape determines the outer contour. If it's a farther out Pipe, then the adjacent, intermediate pipe also becomes plastically deformed to an annular gap to the outer tube too shut down.
  • the outer tube can be plastically deformed but whose outer contour is given by a shape becomes.
  • a shape in the am Farthest inner tube is positioned. This allows a defined Form inner contour for the innermost tube; at The plastic deformation is the innermost pipe against pressed this inner shape.
  • the deformation takes place via an active medium and, for example, a hydraulic deformation is performed.
  • About the Effective medium which is under pressure, can exert a force and in particular on an inner tube exercise to plastically deform this.
  • One An example of such a process is hydro-forming.
  • the deformation takes place via a shaped body, such as for example via a thorn or a ball.
  • a thorn settles Insert into an inner tube and pass through this inner tube for example, by pushing through, driving through or pulling through and it can thereby achieve a widening of the inner tube.
  • the layer composite post-processed to improve the bond becomes.
  • changes can be made via the postprocessing be achieved in the structure, which improve the connection.
  • the layer composite may be subjected to a diffusion annealing process be to improve the bond.
  • At least one tube with at least one side Coating is provided;
  • the coating has an effect favorable to the connection.
  • the composite layer is subjected to a soldering process to the Improve connection. It is then particularly favorable if to be connected Provide pipes with solder or a solder component on at least one side become. In particular, during temperature processing is then a soldering between the layers to be connected, so that via a corresponding Microstructure change the bond is improved.
  • a layer of a material of high thermal conductivity produced.
  • a layer of a material of high thermal conductivity produced.
  • For multilayer pipes with one-sided thermal stress leaves It can be achieved by such a layer that local over-temperatures can compensate better; the associated thermal stresses can be reduced by this.
  • By distributing the heat to a larger one Surface is also the heat transfer improved.
  • At least one layer of a material with high Structural stability is produced at the relevant temperatures.
  • materials with high thermal conductivity such as copper, silver or aluminum are included high temperatures relatively soft, so that the structural stability of a corresponding Pipe is no longer guaranteed.
  • the corrosion protection layer provides corrosion protection including oxidation protection especially for a heat balance layer provided with the material of high thermal conductivity. It is included basically possible that a pipe itself forms a corrosion protection layer or alternatively or in combination, that for example via a coating process a corrosion protection layer is applied to a pipe.
  • a corrosion protection for the innermost Pipe and / or the outermost tube is provided, wherein the layer formed over the pipe itself represents a corrosion protection or a corrosion protection layer can be arranged on the pipe.
  • the innermost layer and / or the am furthest outermost layer formed as a corrosion protection layer, wherein Again, these layers may be layers that are formed by pipes, or they may be layers that over separate processes such as in particular coating process produced are.
  • the innermost layer is a corrosion protection layer educated. This will ensure that heat transfer fluid does not come in contact with a heat balance layer.
  • a tube at least on one side before nesting is provided with a structure.
  • a structure for the heat balance layer or for one of the heat balance layer provided adjacent layer This allows the interface to be influenced that optimum heat transfer and thus optimal heat balance is possible. It can also be the convective heat transfer between the pipe and the heat transfer fluid so that an improved heat transfer is possible and in particular then, when the structure is formed on the pipe carrying the heat transfer fluid or the structure is connected to it.
  • the insert may be a wire that is wound around a corresponding pipe. In plastic deformation then forms the structure of this deposit in one or both adjacent Layers off.
  • the structure may be, for example, a Wave structure at a pipe end for length compensation or one Act diffuser or confuser structure. It is also possible to have a structure to generate, which the convective heat transfer between the Heat transfer fluid carrying pipe and the heat transfer fluid improved.
  • the structure is produced by means of a mold, wherein the generating structure is formed in particular as a negative image of the mold.
  • a flow-influencing structure is produced. It This can be, in particular, a turbulence structure, which is precisely what happens for a swirling of the heat transfer fluid and thus for an improved Heat absorption ensures.
  • ribs, spin-producing Structures or the like arranged in an interior of an inner tube be.
  • the invention has the object, a multilayer tube of the above to provide said type, which with respect to the heat input optimized at high temperatures.
  • This object is according to the invention in the aforementioned multilayer tube achieved in that the heat balance layer and the structural layer by plastic deformation of at least one of the two layers are connected.
  • the compound via plastic deformation allows the multilayer tube in a simple way.
  • At least one corrosion protection layer is provided is to the heat balance layer against corrosion including oxidation too protect.
  • the anticorrosion layer is also advantageous when the heat balance layer and the structural layer not by plastic deformation connected to each other. Common materials for the heat balance layer like aluminum, silver or copper are very high at high temperatures prone to corrosion. Due to the corrosion protection layer is just the Heat balance layer protected.
  • the anticorrosive layer can do that too be formed so that it contributes to the structural stability of the multilayer tube.
  • the heat transfer fluid is at the corrosion protection layer past.
  • the anti-corrosion layer covers the heat balance layer, such that the heat balance layer is not in contact with the heat transfer fluid comes.
  • the innermost layer and / or the am furthest outermost layer a corrosion protection layer.
  • the corrosion protection layer is formed by means of a tube and / or that on a corresponding pipe a corrosion protection layer which has been applied by a separate method, such as for example, by galvanic deposition.
  • a separate method such as for example, by galvanic deposition.
  • galvanic deposition for example, such will be one separately applied corrosion protection layer after the production of the composite pipe applied.
  • an outer layer is the structural layer.
  • the structural stability is ensured even at high temperatures.
  • the heat balance layer is.
  • the heat balance layer can thus to a certain extent hydrostatically store between two layers.
  • the heat balance layer must then not contribute to the Strukturstabili decisiv of the multilayer tube and can their function with regard to the heat balance optimally meet.
  • the multilayer tube is rotationally symmetrical with respect to a Longitudinal axis is formed. This can be achieved via a radially symmetric Deformation force and in particular radially symmetric expansion of a composite pipe produce, which is rotationally symmetric in the final result.
  • the mechanical stresses due to the molding process can be minimized because local differences are minimized.
  • a flow-influencing structure is provided is.
  • a swirling of the heat transfer fluid achieve, in turn, optimal heat transfer to allow for the heat transfer fluid.
  • An embodiment of a multilayer tube according to the invention which is shown in cross section in FIG. 1 and designated there as a whole by 10, comprises a structural layer 12 and a heat balance layer 14.
  • the Structural layer 12 and the heat balance layer 14 are in a composite tube arranged and contact each other and are in particular with each other connected.
  • the structural layer 12 is made of a material which respects the temperatures occurring is heat resistant and a corresponding Has strength.
  • the structural layer 12 may be made of steel or be made of a nickel-based alloy such as Inconel.
  • the heat balance layer 14 is made of a material of high thermal conductivity such as Made of copper, aluminum or silver.
  • the structure layer 12 lies outside and is formed by means of an outer tube 16.
  • the heat balance layer 14 is formed by means of a central tube 18, wherein the compound between the outer tube 16 and the central tube 18 via plastic deformation was achieved.
  • the heat balance layer 14 is to an inner space 20 of the multilayer pipe 10, in which a heat transfer fluid is guided by a Corrosion protection layer 22 covered.
  • the corrosion protection layer is made a material h'erograph, which just a corrosion protection for the Heat balance layer 14 provides.
  • steel or a Nickel-based alloy such as Inconel can be used.
  • the corrosion protection layer 22 is formed by means of an inner tube 24, wherein the pipe assembly with the heat balance layer 14 via plastic deformation is achieved.
  • the multilayer tube 10 is preferably rotationally symmetrical with respect to a Longitudinal axis 26 formed. Accordingly, then the structural layer 12, the Heat balance layer 14 and the corrosion protection layer 22 rotationally symmetric formed to this longitudinal axis 26.
  • the multilayer pipe 10 at least one Longitudinal end has a funnel-shaped expansion, so that in this area the inner diameter is larger than outside this range.
  • To this Way can be a diffuser or Confuser train, which for reducing of flow pressure losses is used.
  • the corrosion protection layer 22 at its the interior 20 facing surface with a flow-influencing structure is provided and in particular with a Verwirbelungsfigured for the Heat transfer fluid. It can be arranged to corresponding ribs be that provide turbulence of the heat transfer fluid. By the turbulence of the heat transfer fluid is the heat transfer the heat transfer fluid, which in the interior 20 of the multilayer tube 10 flows, improves.
  • the heat balance layer 14 is patterned so as to be to improve the heat transfer.
  • a spiral structure be provided (not shown in the drawing).
  • the multilayer pipe 10 is a bend impressed, which serves to compensate for thermal expansion. It can also structures be provided and provided in particular at a pipe end be like wave structures that compensate for thermal expansion serve.
  • connection between the layers can still be achieved by a soldering process or by diffusion annealing (diffusion bonding), as described in more detail below will be improved.
  • the multilayer pipe 10 becomes the flow guide of a heat transfer fluid used.
  • Such flow guide elements are in particular used in heat exchangers or in solar receivers as Absorber tubes.
  • the problem arises that the heat load be one-sided can; when used as an absorber tube, the radiation exposure takes place in particular from one direction, so that the radiation on a front and in particular front half of the tube 10 occurs while the rear Half unirradiated. Due to this uneven external heat load especially in the high temperature range greater than 200 ° C due to local excess temperatures caused thermal stresses. Furthermore also arise tensions due to operating conditions such as the internal pressure in the inner space 20 when a heat transfer fluid flows through the multilayer tube 10.
  • the structural layer 12 provides structural stability of the multilayer pipe 10.
  • the heat balance layer 14 of the material high thermal conductivity ensures heat balance, so that local Overtemperatures are grown. If, for example, copper as a material is used for the heat balance layer 14, then the problem arises that at high temperatures, the copper is very soft and also that is Copper also prone to corrosion including oxidation.
  • the corrosion protection layer 22 of a corresponding resistant material with high strength then in turn protects the heat balance layer 14th
  • the heat balance layer 14 is between the structural layer 12 and the Corrosion protection layer 22 to a certain extent stored hydrostatically, so that This optimally their job, namely the heat balance over the Multilayer tube 10, may meet, over the structural layer 12 optionally in cooperation with the anticorrosive layer 22, the heat balance layer 14 is protected against corrosion. Furthermore, over the structural layer 12 (optionally in combination with the corrosion protection layer 22), the mechanical strength of the multilayer tube 10 also at ensures high temperatures.
  • the bond between the structural layer 12, the heat balance layer 14 and the corrosion protection layer 22 forming tubes 16, 18 and 24 is generated by plastic deformation. This allows mechanical Voltages caused by the production in the layers 12, 14, 22 caused are kept low, so again in particular taking into account the heat load the mechanical stability and the tightness of the Multilayer tube 10 is optimized.
  • the multilayer tube 10 can be produced as follows:
  • the positioning For example, is co-linear with the respective longitudinal axes of the tubes 24th and 18, so that in rotationally symmetrical formation of the gap 28 an annular gap is.
  • the inner tube 24 may also be applied to the center tube 18.
  • the center tube 18 is positioned in the outer tube 16, wherein (in front of the plastic deformation), the outer diameter of the central tube 18 is smaller As the inner diameter of the outer tube 16. As a result, a gap 30th formed between the central tube 18 and the outer tube 16.
  • the positioning For example, the center tube 18 is collinear with the outer tube 16, so that the gap 30 is an annular gap.
  • the central tube 18 can also be connected to the Outside tube 16 are created.
  • the outer tube 16 surrounds the center tube 18 and the Middle tube surrounds the inner tube 24.
  • the outer tube 16 surrounds the center tube 18 and the Middle tube surrounds the inner tube 24.
  • the outer tube 16 is positioned in a mold 32, which has, for example, two mold halves 34 and 36.
  • Form 32 has a receptacle 38 for the outer tube 16.
  • This recording 38 the in particular, has a circular cross section determines the outer shape of the multilayer tube 10 and thus also the outer dimensions of the multilayer tube 10th
  • the multi-layer tube 10 is generated. It takes place while forming the inner tube 24, the central tube 18 and optionally of the outer tube 16.
  • an inner space 40 of the inner tube 24 uniformly exerted over the interior of a deformation force, which the inner tube 24 widens in the direction of the central tube 18, and the central tube 18 widens in the direction of the outer tube 16 and optionally the Outer tube 16 widens or, if this fits snugly in the receptacle 38, causes a plastic deformation of the outer tube 16.
  • the deformation force for expanding the inner tube 24 may, for example via a shaped body 42 such as a mandrel or a ball exercised be introduced, wherein this shaped body 42 inserted into the interior 40 is and is carried out by this.
  • the mold 32 surrounds the outer tube 16, which in the expansion of the inner tube 24 (determined by the expansion the central tube 18) is pressed against the mold 32.
  • the deformation force acts from inside to outside, that is from the longitudinal axis 26 of the respective tubes 16, 18, 24 away.
  • a Form is positioned, which just the inner diameter (and thus the Interior 20) of the multilayer tube 10 defined.
  • the inner tube 24 lies down to this form.
  • the mold is preferably expandable so that its diameter can be reduced after the plastic deformation of the tubes, and then it can be pulled out of the interior 40.
  • it is in the form of a fluid acted upon Form, wherein set over a certain fluid pressure a particular shape is.
  • the force is then applied to the plastic Deformation of the tubes 16, 18 and 24 from the outside.
  • the force acts directly on the Outer tube 16, which then via a symmetrical contraction the plastic Deformation of the central tube 18 causes; the central tube 18 acts in turn on the inner tube 24th
  • the heat balance layer 14 and the corrosion protection layer 22 may be provided.
  • a Diffusion annealing (diffusion bonding) can be performed.
  • the diffusion annealing can under atmospheric conditions, in a vacuum or under Shielding gas done. It can be provided that for the Diffusionsglühvorgang in the interior 20, an internal pressure is applied or that of Diffusionsglühvorgang done without an additional application.
  • At least one layer such as the anticorrosive layer 22 at its heat balance layer 14 facing side and the heat balance layer at the the structure layer 12 facing side is provided with a coating, and in particular with a solder coating or the coating of a solder component is provided.
  • a Soldering for example, under atmospheric conditions, in a vacuum or under Inert gas with or without additional application of internal pressure in Interior 20.
  • a central tube 18 has a copper tube with a Outer diameter of 27 mm and an inner diameter of 22 mm used.
  • the inner tube 24 was an Inconel tube with an outer diameter of 21.3 mm and an inner diameter of 19 mm.
  • a diffusion annealing was carried out at an annealing temperature of 900 ° C and a glow time of 10 hours to 15 hours.
  • a flow-influencing structure in the inner tube 24 the Interior facing 20 form can be, for example Ridges in the corrosion protection layer 22 at the interior 20 facing Form side that represent a vortex structure.
  • a structure on the heat balance layer 14 directly on this or on its side facing the corrosion protection layer 22 to produce.
  • the insert may be one around the Inner tube 24 wound wire act.
  • this deposit forms on the central tube 18, which forms the heat balance layer 14, from.
  • the structure is chosen that the heat transfer and thus the heat balance promoted becomes; it becomes the boundary layer between the heat balance layer 14 and the structural layer 12 and the corrosion protection layer 22 influenced to to get an optimal heat transfer.
  • the multilayer pipe 10 and an embodiment of the invention Methods have been described using the example of a three-layer structure.
  • the inventive method can also be used in a two-layered or use more than three-layered structure.
  • a multilayer pipe of two layers, in which the composite pipe via plastic deformation is generated is also possible.
EP04028534A 2003-12-05 2004-12-02 Méthode de fabrication d'un tube multicouche pour le guidage des fluides de transfer de chaleur et tube multicouche Active EP1537921B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10357671A DE10357671A1 (de) 2003-12-05 2003-12-05 Herstellungsverfahren für ein Mehrschichtrohr zur Führung eines Wärmeübertragungsfluids und Mehrschichtrohr
DE10357671 2003-12-05

Publications (2)

Publication Number Publication Date
EP1537921A1 true EP1537921A1 (fr) 2005-06-08
EP1537921B1 EP1537921B1 (fr) 2007-06-27

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EP04028534A Active EP1537921B1 (fr) 2003-12-05 2004-12-02 Méthode de fabrication d'un tube multicouche pour le guidage des fluides de transfer de chaleur et tube multicouche

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EP (1) EP1537921B1 (fr)
AT (1) ATE365592T1 (fr)
DE (2) DE10357671A1 (fr)
ES (1) ES2287630T3 (fr)

Cited By (7)

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EP1746363A2 (fr) 2005-07-21 2007-01-24 Deutsches Zentrum für Luft- und Raumfahrt e.V. Récepteur solaire et procédé de contrôle et/ou de régulation de la répartition du débit et/ou de la compensation de température dans un récepteur solaire
CN102397937A (zh) * 2011-11-24 2012-04-04 贵州安大航空锻造有限责任公司 钛合金闪光焊环件的热胀形方法
CN102489591A (zh) * 2011-11-24 2012-06-13 贵州安大航空锻造有限责任公司 铝合金矩形环轧件的热胀形方法
US8378280B2 (en) 2007-06-06 2013-02-19 Areva Solar, Inc. Integrated solar energy receiver-storage unit
US8739512B2 (en) 2007-06-06 2014-06-03 Areva Solar, Inc. Combined cycle power plant
US8807128B2 (en) 2007-08-27 2014-08-19 Areva Solar, Inc. Linear fresnel solar arrays
US9022020B2 (en) 2007-08-27 2015-05-05 Areva Solar, Inc. Linear Fresnel solar arrays and drives therefor

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CN102489597B (zh) * 2011-11-24 2014-04-02 贵州安大航空锻造有限责任公司 轴承钢矩形环轧件的热胀形方法
CN102489593B (zh) * 2011-11-24 2014-04-02 贵州安大航空锻造有限责任公司 铝合金闪光焊环件的热胀形方法
CN102489598B (zh) * 2011-11-24 2014-04-02 贵州安大航空锻造有限责任公司 轴承钢异形环轧件的热胀形方法

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US2775029A (en) * 1951-03-02 1956-12-25 Arthur S Bennett Method of making composite metal bodies
GB728131A (en) * 1951-11-16 1955-04-13 Foster Wheeler Ltd Improvements in and relating to composite tubes
DE2624798A1 (de) * 1976-06-02 1977-12-15 Dnepropetrowskij Metall I Verfahren zur herstellung von polymetallrohren
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US4217886A (en) * 1977-12-05 1980-08-19 General Thermal Corporation Radiant energy collecting or emitting element and method and tool for manufacture thereof
EP0015712A1 (fr) * 1979-02-28 1980-09-17 Kawasaki Jukogyo Kabushiki Kaisha Procédé de fabrication de tubes composés à parois multiples
US5097585A (en) * 1989-07-31 1992-03-24 Construction Forms, Inc. Method of forming a composite tubular unit by expanding, low-frequency induction heating and successively quenching
EP0673697A1 (fr) * 1994-03-02 1995-09-27 BDAG Balcke-Dürr Aktiengesellschaft Procédé et appareil pour la fabrication de tuyaux composites
EP1000677A2 (fr) * 1998-11-09 2000-05-17 Volkswagen Aktiengesellschaft Procédé pour former une pièce par application d'une pression intérieure élevée
DE10019384A1 (de) * 2000-04-19 2001-10-31 Hamacher Karl Gmbh Verfahren zur Herstellung eines Verbundrohres zum Transport fluider Medien

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746363A2 (fr) 2005-07-21 2007-01-24 Deutsches Zentrum für Luft- und Raumfahrt e.V. Récepteur solaire et procédé de contrôle et/ou de régulation de la répartition du débit et/ou de la compensation de température dans un récepteur solaire
US8378280B2 (en) 2007-06-06 2013-02-19 Areva Solar, Inc. Integrated solar energy receiver-storage unit
US8739512B2 (en) 2007-06-06 2014-06-03 Areva Solar, Inc. Combined cycle power plant
US8807128B2 (en) 2007-08-27 2014-08-19 Areva Solar, Inc. Linear fresnel solar arrays
US9022020B2 (en) 2007-08-27 2015-05-05 Areva Solar, Inc. Linear Fresnel solar arrays and drives therefor
CN102397937A (zh) * 2011-11-24 2012-04-04 贵州安大航空锻造有限责任公司 钛合金闪光焊环件的热胀形方法
CN102489591A (zh) * 2011-11-24 2012-06-13 贵州安大航空锻造有限责任公司 铝合金矩形环轧件的热胀形方法
CN102397937B (zh) * 2011-11-24 2014-02-05 贵州安大航空锻造有限责任公司 钛合金闪光焊环件的热胀形方法
CN102489591B (zh) * 2011-11-24 2014-04-02 贵州安大航空锻造有限责任公司 铝合金矩形环轧件的热胀形方法

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ES2287630T3 (es) 2007-12-16
EP1537921B1 (fr) 2007-06-27
DE10357671A1 (de) 2005-07-07
ATE365592T1 (de) 2007-07-15
DE502004004180D1 (de) 2007-08-09

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