EP1730320A1 - Alliage d'aluminium thermoresistant destine a un echangeur de chaleur - Google Patents

Alliage d'aluminium thermoresistant destine a un echangeur de chaleur

Info

Publication number
EP1730320A1
EP1730320A1 EP05716483A EP05716483A EP1730320A1 EP 1730320 A1 EP1730320 A1 EP 1730320A1 EP 05716483 A EP05716483 A EP 05716483A EP 05716483 A EP05716483 A EP 05716483A EP 1730320 A1 EP1730320 A1 EP 1730320A1
Authority
EP
European Patent Office
Prior art keywords
strip
aluminum
sheet
heat exchangers
alloy
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
EP05716483A
Other languages
German (de)
English (en)
Other versions
EP1730320B1 (fr
Inventor
Raimund Sicking
Pascal Wagner
Manfred Mrotzek
Thomas Husse
Gerhard Berming
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.)
Hydro Aluminium Deutschland GmbH
Original Assignee
Hydro Aluminium Deutschland GmbH
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
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Application filed by Hydro Aluminium Deutschland GmbH filed Critical Hydro Aluminium Deutschland GmbH
Priority to PL05716483T priority Critical patent/PL1730320T3/pl
Publication of EP1730320A1 publication Critical patent/EP1730320A1/fr
Application granted granted Critical
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys

Definitions

  • the invention relates to a heat-resistant aluminum alloy for heat exchangers, a method for producing an aluminum strip or sheet for heat exchangers and a corresponding aluminum strip or sheet.
  • heat exchangers consisting of aluminum or aluminum alloys are increasingly used.
  • the use of aluminum in place of the previously used non-ferrous metal heat exchanger with a comparable size and performance has nearly halved the weight of the heat exchanger.
  • the heat exchangers made of aluminum or an aluminum alloy are nowadays usually used in the motor vehicle for cooling the cooling water, oil, as a charge air cooler and in air conditioning systems.
  • Automotive heat exchangers are commonly made from aluminum strips or sheets in which the individual prefabricated components of the heat exchanger, such as fins, pipes and manifolds, are joined together by brazing.
  • alloying components are not usually included in aluminum alloys and show harmful effects in other applications than brazed heat exchangers.
  • alloying of the abovementioned alloy constituents poses a major problem with regard to the recyclability of the aluminum alloy even in the context of the EU end-of-life vehicle regulations.
  • the most frequently used methods for producing heat exchangers are, on the one hand, vacuum brazing without flux and, on the other hand, inert gas brazing with non-corrosive fluxes .
  • the previously used in the vacuum brazing of heat exchangers cold-hardening aluminum alloys such as
  • Aluminum alloys AA6063 (AlMgO, 7Si), AA6061 (AlMglSiCu) or AA6951 (AlMgO, 6SiCu) have relatively high magnesium contents and are usually soldered with sols containing high Mg, such as AA4004, in order to penetrate the vacuum during the soldering process.
  • sols containing high Mg such as AA4004, in order to penetrate the vacuum during the soldering process.
  • Getter an oxidation of the molten aluminum solder on the zu To prevent soldering components and thus to ensure a perfect solder joint without flux and on the other hand to achieve high strength values of the brazed heat exchanger in a cold aging after soldering.
  • a disadvantage of vacuum brazing is now that the maintenance of the vacuum and the purity requirements of the components to be soldered are costly.
  • inert gas soldering requires less effort under these aspects, since the soldering in a protective atmosphere of an inert protective gas, such as nitrogen, happens.
  • inert gas soldering allows up to 20% shorter soldering cycles, but the use of high magnesium content aluminum alloy, known as vacuum brazing, is not possible because magnesium reacts with the non-corrosive flux during brazing. The processability can be extended by using expensive cesium-containing fluxes up to higher Mg contents.
  • Protective gas soldering also known as CAB brazing, is the most important process for the production of heat exchangers for the automotive industry.
  • the salt bath soldering is still available, in which the components are preheated and then immersed in a salt bath.
  • the salt bath is at the same time flux and transport medium for the heat.
  • the liquid salt reacts with the oxide skin and allows the wetting reaction of the solder protected by the flux.
  • the heat exchangers are moved out of the salt bath, whereby the flow of the liquid salt must be ensured. Since the fluxes are generally hygroscopic in salt bath soldering and contain chlorides, all heat exchangers must be cleaned after salt bath soldering in a multi-stage process in order to avoid corrosion problems.
  • the aluminum alloy should have a solidus temperature of at least 620 ° C.
  • the object of the present invention is to provide an aluminum alloy and an aluminum strip or sheet which, with good recyclability, has a solidus temperature of at least 620 ° C. and at the same time an improved heat resistance after soldering. Moreover, the present invention has for its object to propose a method for producing a corresponding aluminum strip or sheet.
  • an aluminum alloy for heat exchangers in that the aluminum alloy has the following alloy constituents in% by weight:
  • the aluminum alloy according to the invention is not only characterized in that it has a solidus temperature of more than 620 ° C, it also has a particularly high heat resistance after soldering.
  • heat exchanger elements for example tubes
  • heat exchanger elements can be produced whose yield strength Rp0.2 after soldering of the heat exchangers is more than 65 MPa both at room temperature and at a test temperature of 250 ° C.
  • heat exchanger elements produced from the aluminum alloy according to the invention thus have an over 20% higher heat resistance, in particular even at temperatures up to 265 ° C.
  • the achievable heat resistance is attributed to the fact that a high secondary phase density is achieved by combining an increased Si-Mn and Cr content with the aluminum alloy according to the invention.
  • the aluminum alloy according to the invention has a more positive corrosion potential of -750 mV.
  • Elements made of the aluminum alloy according to the invention such as pipes, tube sheets, side parts or disks of a heat exchanger, allow the corrosion design of the heat exchanger to be designed so that the said elements of the heat exchanger have a high corrosion resistance.
  • the aluminum alloy according to the invention exhibits only a slight cold hardening, so that the aluminum strips or sheets consisting of the aluminum alloy according to the invention are not subject to a storage time limitation before processing or deformation before soldering.
  • the limitation of the Fe content of the aluminum alloy according to the invention to a maximum of 0.5 wt .-% improves in conjunction with the Cu content of the invention, the corrosion resistance of the aluminum alloy after soldering.
  • the near-surface layers of the core material of the aluminum alloy according to the invention deplete of copper, so that a protective potential gradient is formed for the nobler core material having a higher Cu content.
  • This behavior of the aluminum alloy during soldering is promoted by the low iron content.
  • the heat resistance of the aluminum alloy according to the invention drops significantly at a Cu content of less than 0.3 wt .-%, on exceeding the upper limit of the Cu content, however, the aluminum alloy tends to cracking hot during casting.
  • corrosion and soldering problems also arise at higher Cu contents, because the near-surface layers of the core material, despite depletion, have a relatively high Cu content.
  • the Mn content of the aluminum alloy according to the invention determines the size of the excretions.
  • the Mn content also has an influence on the heat resistance. If the lower limit of 1.1 wt .-% of manganese in the aluminum alloy according to the invention is exceeded, the heat resistance of the aluminum alloy is reduced. An increase in the manganese content above the upper limit of 1.8 wt .-%, however, leads to coarse precipitates in the structure, which adversely affect the overall forming capacity of the aluminum alloy.
  • the strength of the aluminum alloy after brazing is additionally influenced by the Mg content. A reduction of the Mg content below 0.15% results in a lack of strength of the aluminum alloy.
  • the upper limit of the Mg content to 0.6 wt .-% ensures that the aluminum alloy according to the invention with all three common soldering methods, the vacuum, CAB and Salzbadlötvon is solderable.
  • the Cr content of the aluminum alloy according to the invention of at least 0.01% by weight ensures that the aluminum alloy according to the invention has sufficient heat resistance.
  • the formability of the aluminum alloy according to the invention is ensured by the fact that the Cr content is limited to a maximum of 0.3 wt .-%, because in the case of exceeding coarse precipitates are found in the crystal structure of the aluminum alloy.
  • the Zn content of the aluminum alloy is limited to a maximum of 0.1% by weight.
  • a higher Zn content lowers the corrosion potential of the aluminum alloy, so that the aluminum alloy is, for example, too baseless with respect to Zn-free lamellae.
  • Content of at most 0.3 wt .-% ensures that no coarse precipitates are formed in the aluminum alloy, which in turn adversely affect the forming capacity of the aluminum alloy.
  • the aluminum alloy according to the invention has the following proportions of alloy constituents in% by weight:
  • the aluminum alloy according to the invention can be processed without expensive cesium-containing fluxes by the CAB brazing method, whereby the risk of cracks during solidification of the rolling ingot reduced by the Ti content and the corrosion potential is increased by the reduced Zn content.
  • a very good compromise of maximum strength after soldering and, at the same time, high solidus temperature is, according to a further embodiment of the aluminum alloy according to the invention, achieved in that the aluminum alloy has the following proportions of the alloy constituents Si, Fe and Mn in% by weight:
  • the above object is achieved by a method for producing an aluminum strip or sheet for heat exchangers
  • a method for producing an aluminum strip or sheet for heat exchangers This is achieved by casting a billet of a heat-resistant aluminum alloy according to the invention by continuous casting, preheating the billet at 400 to 500 ° C. before hot rolling, rolling the billet to a hot strip, the hot strip temperature being 250 to 380 ° C., the hot strip rolled to a hot strip thickness of 3 to 10 mm at the end of the hot rolling and the hot strip is cold rolled to final thickness.
  • an aluminum strip can be produced which has a high secondary phase density. Due to the high secondary phase density, an aluminum strip or sheet according to the invention has a high heat resistance at room temperature and at a temperature of 250 ° C.
  • the yield strength Rp0,2 of the aluminum strip is more than 65 MPa at the temperatures mentioned.
  • the rolling ingot can be homogenized before preheating. Due to the transformations that are necessary for the production of a tube plate, side part or a disc of a heat exchanger, the aluminum strip should have a maximum forming capacity before processing to one of the latter elements of a heat exchanger. This is ensured by the homogenization before the preheating of the rolling ingot. If the aluminum strip according to the invention does not have to be subjected to strong deformations before soldering, as for example in the production of tubes, it is possible to dispense with homogenization before preheating. By homogenizing before preheating Although the yield strength Rp0.2 of the yield strength Rp0.2 of the yield strength Rp0.2 of the yield strength
  • the yield strength Rp0.2 is still more than 50 MPa, especially at
  • Test temperatures of 250 ° C, so that yield strengths are achieved, which are far above those of the standard alloy AA 3003.
  • the Umformites the aluminum strip can be further increased by the hot strip is annealed at a temperature of 300 to 450 ° C.
  • the hot strip is annealed at a temperature of 300 to 450 ° C.
  • solidifications which have arisen in the aluminum strip due to deformation are largely broken down again.
  • the aforementioned process steps ensure maximum formability during cold rolling of the aluminum strip or sheet.
  • the final state of the aluminum strip is, according to a further developed embodiment of the method, adjusted by the fact that after the cold rolling, a state annealing to the final state at a temperature of 250 to 400 ° C. If the aluminum strip is used for the production of tubesheets, side panels or discs of a heat exchanger, soft annealing takes place after cold rolling. If pipes are produced from the aluminum strip, which does not require strong transformations, the aluminum strip is merely back-annealed after cold rolling.
  • Aluminum core alloy can be adjusted. For example, by plating with an aluminum solder, the process reliability when soldering the heat exchanger elements can be increased.
  • other non-solder alloy circuit boards may be mounted on the aluminum cored bars, such as anticorrosion plating.
  • an aluminum soldering board When an aluminum soldering board is used, during hot rolling, the aluminum brazing layer is cold-welded to the core ingot so that the aluminum strip has a uniform cladding layer of an aluminum braze. During soldering, this leads to particularly homogeneous and uniform solder joints between the individual elements of the heat exchanger.
  • one-sided plating with an aluminum solder it is also possible to plate or coat the other side with another aluminum alloy, for example with an aluminum alloy serving as corrosion protection.
  • Aluminum tubes for heat exchangers are plated on one or two sides as needed. The aluminum band for side panels, however, are usually plated on one side. Tube bottoms and discs of a heat exchanger, however, are mostly used plated on both sides.
  • the method according to the invention for producing an aluminum strip can, according to a next embodiment of the method according to the invention, be improved by using as aluminum solder an aluminum alloy with 6 to 13% Si, in particular an AlSi7.5 or AlSilO. Alloy is used. Due to the high Si content of the solder, the silicon diffuses from the solder into the core of the aluminum strip and there leads to the formation of a precipitation seam of AlMnSi phases, which in comparison to the core alloy a negative
  • heat exchangers can be produced with reduced wall thickness, which nevertheless meet the increased future operating requirements.
  • the aluminum strip or sheet is a pipe band, a tube bottom band, a side band or a belt band for producing a heat exchanger.
  • a pipe tape according to the invention tube bottom band, side band or disc band corresponding elements of the heat exchanger, tubes, tubesheets, side panels or slices can be made, which despite the smaller wall thickness meet all other requirements, in particular with respect to the formability before soldering and the yield strength at room and operating temperature.
  • the weight of the heat exchanger can, according to an advantageous embodiment of the aluminum strip according to the invention, be reduced in that the pipe strip has a final thickness of 0.15 to 0.6 mm, preferably 0.15 to 0.4 mm, the tube bottom strip a final thickness of 0, 8 to 2.5 mm, preferably 0.8 to 1.5 mm, the side panel tape has a final thickness of 0.8 to 1.8 mm, preferably 0.8 to 1.2 mm, or the disk tape has a final thickness of 0.3 to 1.0 mm, preferably 0.3 to 0.5 mm.
  • Fig. 1 is a schematic representation of a first embodiment of the inventive method for producing an aluminum strip
  • Fig. 2 is a perspective view of a heat exchanger for motor vehicles.
  • a first embodiment of a method according to the invention for producing an aluminum strip or sheet for heat exchangers according to the second teaching of the present invention is shown schematically.
  • Fig. 1 shows the ingot casting 1. After alloying the liquid metal, both the aluminum alloy for the core and the alloy for plating, for example, an aluminum solder are cast as ingots.
  • the plating bar is usually preheated, hot rolled to the desired thickness and split lengthwise to the board.
  • the board may also be made using alternative methods, such as by separating from a rolling billet.
  • the core ingot of an aluminum alloy according to the invention may optionally be homogenized prior to preheating, depending on the rolled product to be produced. If, for example, a tubular strip for heat exchangers is produced by the method according to the invention, however, it is also possible to dispense with homogenization prior to hot rolling, since the pipe strip is not subjected to any great deformation until the production of a tube for heat exchangers.
  • the boards needed for plating are placed on one or both sides of the core bar.
  • the resulting package of a core ingot, consisting of an aluminum alloy according to the invention, which is provided on one or two sides with sinkers, is preheated at 400 to 500 ° C before hot rolling. Subsequently, the package 4 is hot rolled in a reversing stand 5 or alternatively on a tandem stand 5a to a hot strip thickness of 3 to 10 mm.
  • the hot strip temperature during hot rolling is 250 to 380 ° C.
  • the strip After hot rolling, the strip is cold rolled on a cold roll 6.
  • the tape for example to achieve the forming properties, after hot rolling at a temperature of 300 ° C to 450 ° C are annealed.
  • This also applies to cold rolling, in which the intermediate annealing can also take place at a temperature of 300 ° C to 450 ° C before reaching the final thickness.
  • the finished cold-rolled, aluminum strip or sheet according to the invention can be subjected to a conditional annealing to the final state in a chamber furnace 7, depending on the required properties. A state annealing could also be done in a continuous furnace.
  • Fig. 2 shows a heat exchanger 8 in the tube-fin design in a perspective view.
  • the heat exchanger is constructed from a tube 9, a tube plate 10, side parts 11 and fins 12.
  • the side parts 11 and the tubesheet 10 are subjected to strong transformations before soldering, so that the aluminum strip provided for the side parts 11 and the tubesheet 10 should have correspondingly good forming properties.
  • the tubes 10 of a heat exchanger are usually produced by longitudinal seam welding.
  • the thickness of the processed during this process tube tape is between 0.15 mm and 0.6 mm, preferably 0.15 to 0.4 mm, depending on the design of the heat exchanger, the tube tape is soldered outside or on both sides.
  • An inventive aluminum strip for the tube sheet 10 typically has a thickness of 0.8 to 2.5 mm, preferably 0.8 to 1.5 mm, and is preferably in Condition "soft" produced and processed.For this purpose, the aluminum alloy according to the invention is annealed after cold rolling to the final state "soft".
  • the requirements on the formability before soldering are high in the tube bottom strip, since usually a high degree of deformation is performed, which serves for sealing and fixing, for example, a water box, collector, air connection or similar components.
  • the tube bottom band is usually plated on one side, but can also be plated on both sides.
  • the side parts 11 are produced and processed from an aluminum strip consisting of an aluminum alloy according to the invention with a wall thickness of 0.8 to 1.8 mm, preferably 0.8 to 1.2 mm, preferably in the state "soft.” As in the case of the tubesheet 10, the requirements for the forming capacity of the side parts are high.This also applies to a not shown in Figure 2 discs of a heat exchanger, which are used in heat exchangers in sliced plate type or heat exchangers in stacking disk design.
  • a high corrosion resistance is required.
  • the in-situ formation of cathodic protection against corrosion during the soldering process is made possible by the reduced iron content and copper Firstly copper diffuses from the core material into the aluminum solder layer during soldering from the areas close to the plating layer, so that a protective layer On the other hand, silicon diffuses out of the strongly silicon-containing aluminum solder into the material Core material of the aluminum strip according to the invention and there leads to a formation of a precipitation seam of AlMnSi phases. However, the AlMnSi phases have a more negative corrosion potential compared to the core alloy.
  • an aluminum strip for producing tubes for heat exchangers was produced by the method according to the invention and its heat resistance was measured.
  • the aluminum alloy of the aluminum strip produced had the following alloy composition:
  • Cu 0.4 wt.%
  • Mn 1.3 wt.%
  • Mg 0.3 wt.%
  • Ti 0.02 wt. G, unavoidable accompanying elements individually max. 0.1%, in total max. 0.15 wt .-% and the balance aluminum.
  • the hot strength was determined by measuring the yield strength.
  • the yield strength RpO, 2 was 72 MPa at a test temperature of 250 ° C.
  • Conventional aluminum alloys have significantly lower yield strengths, especially at test temperatures of 250 ° C on.
  • the yield strengths of the typically used aluminum alloys for tubes of a heat exchanger are below 65 MPa at room temperature.
  • a conventional alloy AA3003 after brazing at a temperature of 250 ° C has only a yield strength Rp0.2 of less than 40 MPa.
EP05716483A 2004-03-31 2005-03-31 Procede de production de feuillard ou tole en alliage d'aluminium pour echangeur de chaleur Active EP1730320B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05716483T PL1730320T3 (pl) 2004-03-31 2005-03-31 Sposób wytwarzania taśmy lub blachy ze stopu aluminium na wymienniki ciepła

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004016482 2004-03-31
PCT/EP2005/003398 WO2005095660A1 (fr) 2004-03-31 2005-03-31 Alliage d'aluminium thermoresistant destine a un echangeur de chaleur

Publications (2)

Publication Number Publication Date
EP1730320A1 true EP1730320A1 (fr) 2006-12-13
EP1730320B1 EP1730320B1 (fr) 2011-05-11

Family

ID=34962335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05716483A Active EP1730320B1 (fr) 2004-03-31 2005-03-31 Procede de production de feuillard ou tole en alliage d'aluminium pour echangeur de chaleur

Country Status (13)

Country Link
US (1) US20070286763A1 (fr)
EP (1) EP1730320B1 (fr)
JP (1) JP2007530794A (fr)
KR (1) KR20060134189A (fr)
CN (1) CN100519796C (fr)
AT (1) ATE509127T1 (fr)
BR (1) BRPI0509358B1 (fr)
CA (1) CA2558108C (fr)
ES (1) ES2366442T3 (fr)
PL (1) PL1730320T3 (fr)
PT (1) PT1730320E (fr)
WO (1) WO2005095660A1 (fr)
ZA (1) ZA200607545B (fr)

Cited By (3)

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EP2692524A1 (fr) * 2008-01-18 2014-02-05 Hydro Aluminium Deutschland GmbH Matériau composite doté d'une couche de protection contre la corrosion et son procédé de fabrication
US9545777B2 (en) 2013-03-13 2017-01-17 Novelis Inc. Corrosion-resistant brazing sheet package
US9546829B2 (en) 2013-03-13 2017-01-17 Novelis Inc. Brazing sheet core alloy for heat exchanger

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DE102010031468A1 (de) * 2010-07-16 2012-01-19 Behr Gmbh & Co. Kg Fluidkanal für einen Wärmetauscher
WO2013086628A1 (fr) 2011-12-16 2013-06-20 Novelis Inc. Alliage pour ailettes d'aluminium et son procédé de fabrication
CN104043671B (zh) * 2013-03-16 2016-02-10 亚太轻合金(南通)科技有限公司 高精度超细薄壁铝合金盘管及其生产工艺
CN104109781B (zh) * 2013-06-04 2016-12-28 美的集团股份有限公司 铝合金、微通道铝扁管及其制备方法、换热器、电器
KR20150073555A (ko) * 2013-12-23 2015-07-01 엘에스전선 주식회사 열교환기 배관용 고내식성 알루미늄 합금 및 이로부터 제조된 열교환기 배관
JP6751713B2 (ja) * 2014-08-06 2020-09-09 ノベリス・インコーポレイテッドＮｏｖｅｌｉｓ Ｉｎｃ． 熱交換器フィンのためのアルミニウム合金
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CN105112739A (zh) * 2015-09-28 2015-12-02 亚太轻合金(南通)科技有限公司 耐腐蚀铝合金材料的制备工艺及耐腐蚀铝合金材料
CN105543582B (zh) * 2016-02-01 2018-10-23 佛山市南海区利采隆有色金属有限公司 一种耐热型铝合金配方及其铸造方法
CN109219494B (zh) 2016-04-19 2021-09-07 海德鲁铝业钢材有限公司 含腐蚀防护层的铝复合材料、其生产方法和应用及换热器
CN107541689A (zh) * 2017-08-30 2018-01-05 安徽省含山县兴建铸造厂 一种铝‑铬合金铸造工艺
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CN115595473B (zh) * 2022-10-18 2024-04-09 上海华峰铝业股份有限公司 一种铸轧翅片及其制备方法与应用

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EP2692524A1 (fr) * 2008-01-18 2014-02-05 Hydro Aluminium Deutschland GmbH Matériau composite doté d'une couche de protection contre la corrosion et son procédé de fabrication
US9545777B2 (en) 2013-03-13 2017-01-17 Novelis Inc. Corrosion-resistant brazing sheet package
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PT1730320E (pt) 2011-08-24
EP1730320B1 (fr) 2011-05-11
ZA200607545B (en) 2008-05-28
CA2558108C (fr) 2014-07-08
JP2007530794A (ja) 2007-11-01
CN1938439A (zh) 2007-03-28
KR20060134189A (ko) 2006-12-27
BRPI0509358A (pt) 2007-09-11
US20070286763A1 (en) 2007-12-13
BRPI0509358B1 (pt) 2014-02-11
CN100519796C (zh) 2009-07-29
ES2366442T3 (es) 2011-10-20
CA2558108A1 (fr) 2005-10-13
PL1730320T3 (pl) 2011-10-31
ATE509127T1 (de) 2011-05-15
WO2005095660A1 (fr) 2005-10-13

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