EP2177638A1 - Aluminiumlegierung, insbesondere zur Herstellung von Wärmeaustauschern - Google Patents

Aluminiumlegierung, insbesondere zur Herstellung von Wärmeaustauschern Download PDF

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Publication number
EP2177638A1
EP2177638A1 EP08018013A EP08018013A EP2177638A1 EP 2177638 A1 EP2177638 A1 EP 2177638A1 EP 08018013 A EP08018013 A EP 08018013A EP 08018013 A EP08018013 A EP 08018013A EP 2177638 A1 EP2177638 A1 EP 2177638A1
Authority
EP
European Patent Office
Prior art keywords
weight
alloy
manufacturing
alloys
heat exchangers
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.)
Withdrawn
Application number
EP08018013A
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English (en)
French (fr)
Inventor
Pawel Rutecki
Andrzej Frontczak
Pawel Sauczek
Grzegorz Kosmalski
Zdzislaw Smorawinski
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"IMPEXMETAL" SA
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"IMPEXMETAL" SA
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Publication date
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Priority to EP08018013A priority Critical patent/EP2177638A1/de
Publication of EP2177638A1 publication Critical patent/EP2177638A1/de
Withdrawn legal-status Critical Current

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    • 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
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • 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
    • C22C21/10—Alloys based on aluminium with zinc as the next major constituent
    • 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
    • C22C21/12—Alloys based on aluminium with copper as the next major constituent
    • 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
    • C22F1/043—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 of alloys with silicon as the next major constituent
    • 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
    • C22F1/053—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 of alloys with zinc as the next major constituent
    • 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
    • C22F1/057—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 of alloys with copper as the next major constituent
    • 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 refers to the aluminum alloy, designated in particular for heat exchangers manufacturing, in particular for automotive industry.
  • the known standard composition of aluminum alloy type 3003, specified in standard PN-EN573, in addition to aluminum includes also silicon Si - 0.6 %, iron Fe - 0.7 % and manganese Mn - from 1.0% to 1.5 %.
  • the alloy may also contain potential regulators in the form of zinc Zn - up to 0.10% and copper Cu - from 0.05% to 0.20%.
  • the known alloys are used, among others, for manufacturing of heat exchangers for automotive industry, such as radiators and condensers.
  • Known alloys are based on standard alloys type 3003 and 3003+ 1.5 % Zn, enriched with additions of different chemical elements, which are to regulate the corrosion potential, corrosion resistance, strength properties, thermal resistance, plasticity and formability.
  • aluminum alloys are used, which according to their eventual purpose differ in mechanical properties and corrosion potential level.
  • the alloys vary in scope of zinc content, wherein the alloys used for the manufacturing of pipes do not contain zinc, whereas the alloys used for the manufacturing of the flanges with a developed surface area, which surround the pipes and are known as fins, contain zinc, which is a known corrosion potential regulator for the alloy.
  • the fins are used as pipes protectors.
  • the properties of the known alloys are influenced by their chemical composition, manufacturing method and type of thermal treatment.
  • any aluminum alloys depend on the composition of solution ⁇ , and also crystallographic composition and structure, in particular the size and distribution of inter-metallic precipitations at grain boundaries.
  • the direct-chill casting processes for the known aluminum alloys are characterized by a dendrite structure, which is decisive for non-homogeneity of the material, variable size of precipitations and their distribution. This material structure is then reflected in the final properties of the product, that is the properties of the rolled strip. Following local variations in microcrystalline structure, there are considerable corrosion potential gradients between precipitations and solution in the known alloys, which leads to local corrosion centers.
  • the known process for structure homogenization is not used, as in the final product, the expected length of grains at the cross-section of the strip should be relatively low, which is connected with a large grain size. Small grains are an obstacle in the process of heat exchangers brazing.
  • Patent Description No. 185567 specifies the composition of aluminum alloy for fins manufacturing, with the following basic additions /group I/: silicon Si from 0.05% to 0.50% by weight, iron Fe 0.5% by weight, manganese Mn from 0.1% to 1.5 % by weight, and titanium from 0.03 % to 0.35 % by weight and additions with the purpose of potential regulators /group II/, that is zinc Zn from 0.06% to 1.0 % by weight, copper Cu 0.03 % by weight, and alloy strengthening additions /group III/including nickel Ni below 0.01 % by weight, chromium Cr 0.5 % by weight, and magnesium Mg 1.0 % by weight, and zirconium Zr 0.,3 % by weight.
  • the alloy is designed for fins production.
  • European Patent Document EP 1435397B1 refers to the aluminum alloy containing silicon Si from 0.5% to 1.0 % by weight, iron Fe 0.3 % by weight, manganese Mn from 0.3 % to 0.7% by weight and zinc Zn 4 % by weight, and magnesium Mg from 0.25% to 0.6 % by weight, and zirconium Zr from 0.05% to 0.25 % by weight. This alloy is also designed for fins manufacturing.
  • European Patent Document EP 1580286 A2 refers to the alloy for the manufacturing of heat exchanger pipes, which contains silicon Si 0.1 % by weight, manganese Mn from 1.55 % to 1.9 % by weight, and copper from 0.6 % to 1.0% by weight and magnesium Mg 0.4 % by weight, and zirconium Zr from 0.05 % to 1.5 % by weight.
  • alloys strength and thermal resistance increase, whereas their resistance to corrosion and plasticity deteriorate.
  • this fact considerably limits the natural tendency to reduce the thickness of a material, in particular in the case of the strip designed for fins production.
  • the desired properties of the material for the pipes include plasticity of material related to its formability and appropriate corrosion potential correlated with the fins potential so that the protecting effect is provided.
  • Material for fins manufacturing should also be characterized by good formability. Therefore, a difference in the composition of the alloy for pipes manufacturing and fins manufacturing is in corrosion potential regulators, which in the known alloys have the form of Zn and/or Cu additions and alloy strengthening additions, which in the known alloys have the form of Ni, C, Mg, Zr, which are added together or separately.
  • International patent application WO 2005/011889 refers to aluminum alloy designed for the production of pipes and fins for heat exchangers, containing silicon Si 0.3 % by weight, iron Fe up to 0.5 % by weight, manganese Mn from 0.5 % to 0.7 % by weight, titanium Ti below 0.2 % by weight, and zinc Zn up to 2.0 % by weight, and copper Cu from 0.06 % to 1.5 % by weight.
  • Aluminum alloy according to the present invention contains:
  • the alloy according to the invention shows the properties of the globular primary structure, which is a result of its new chemical composition.
  • the result of crystallizing the alloy in the globular form in the presence of the elements which act as alloy strengthening additions, such as Ni, Cr, Mg and Si guarantees even distribution of undissolved elements in the form of fine inter-metallic phases at the boundary, which are formed as a result of grain crystallization process, wherein the grain size is not reflected in the final product, which is made from the alloy according to the present invention.
  • the globular structure which is formed makes it possible in the conventional treatment process to have the final product, i.e. rolled strip, with solution and precipitation strengthening and at the same time with high plasticity of the alloy and its good thermal and corrosion resistance.
  • the alloy according to the invention is designed for the manufacturing of the elements of heat exchangers, in particular radiators for automotive industry, wherein the alloy may be used for the manufacturing of both pipes and fins.
  • microcrystalline structure of the alloy according to the present invention was analyzed by comparing the structure of the alloy according to the present invention, of the composition as follows: Fe - 0.274%; Si - 0.392%; Cu - 0.011%; Zn - 1.413%; Ti 0.157%; Mg - 0.022%; Mn - 1.510%; Ni - 0.136%; Be - 0.045%; Zr - 0.019; remaining Al- alloy HF 311 ( Fig.
  • reference alloy FA6815 of the following chemical composition: Fe - 0.267%; Si - 0.974%; Cu - 0.011%; Zn - 1.473%; Ti - 0.035%; Mg - 0.030%; Mn - 1.565%; Ni - 0.009%; Be - 0.001%; Zr - 0.115%; Al - remaining %.
  • Fig. 1d The specimens of the above mentioned alloys were made, which then were used as crystalline microsections.
  • Fig. 1a - 1d show the pictures of the primary microstructure of the tested specimens.
  • thermocouple located under the tested material near the support in the axis of the measurement device.
  • Tests in scope of corrosion resistance of the alloys according to the invention were made in line with the method as per ASTM G 69-97. The tests were made using the apparatus Potencjostat - Galwanostat ATLAS 0531 EU and the following properties were determined:

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
EP08018013A 2008-10-15 2008-10-15 Aluminiumlegierung, insbesondere zur Herstellung von Wärmeaustauschern Withdrawn EP2177638A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08018013A EP2177638A1 (de) 2008-10-15 2008-10-15 Aluminiumlegierung, insbesondere zur Herstellung von Wärmeaustauschern

Applications Claiming Priority (1)

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EP08018013A EP2177638A1 (de) 2008-10-15 2008-10-15 Aluminiumlegierung, insbesondere zur Herstellung von Wärmeaustauschern

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EP2177638A1 true EP2177638A1 (de) 2010-04-21

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102660693A (zh) * 2011-12-15 2012-09-12 贵州华科铝材料工程技术研究有限公司 采用TiN及BeH2粉末处理的铝合金及其制备方法
CN104233020A (zh) * 2014-09-08 2014-12-24 南南铝业股份有限公司 大功率散热器用铝合金及其熔体的净化方法
CN104233019A (zh) * 2014-09-08 2014-12-24 南南铝业股份有限公司 家电拉手用铝合金及其熔体的净化方法
US9064852B1 (en) * 2011-12-05 2015-06-23 The Peregrine Falcon Corporation Thermal pyrolytic graphite enhanced components
US9546829B2 (en) 2013-03-13 2017-01-17 Novelis Inc. Brazing sheet core alloy for heat exchanger
US9545777B2 (en) 2013-03-13 2017-01-17 Novelis Inc. Corrosion-resistant brazing sheet package
WO2023035831A1 (zh) * 2021-09-08 2023-03-16 江苏亨通电力特种导线有限公司 一种挤压用铝合金及其制备方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1330560A (en) * 1970-12-28 1973-09-19 Sumitomo Electric Industries Aluminum alloy for electrical conductors and a method of manufacturing the same
GB1423844A (en) * 1972-04-27 1976-02-04 Elektrokoppar Ab Electrically conducting material
EP0185567A1 (de) 1984-11-21 1986-06-25 Societe Anonyme Painsol Stützelement für Paletten
JPH0448045A (ja) * 1990-06-15 1992-02-18 Nippon Light Metal Co Ltd 非腐食性フラックスろう付け用アルミニウムブレージングシート
JPH04318144A (ja) * 1991-04-17 1992-11-09 Kobe Steel Ltd 強度、焼付硬化性かつ成形性に優れたＡｌ合金板及びその製造方法
JPH06272001A (ja) * 1993-03-19 1994-09-27 Furukawa Alum Co Ltd 加熱硬化性に優れたＡｌ−Ｍｇ−Ｓｉ系合金板材の製造方法
JP2000273563A (ja) * 1999-03-18 2000-10-03 Sky Alum Co Ltd 陽極酸化処理後の色調が灰色で安定なアルミニウム合金圧延板およびその製造方法
WO2005011889A1 (en) 2003-07-30 2005-02-10 Corning Incorporated Metal honeycomb substrates for chemical and thermal applications
EP1435397B1 (de) 2002-10-14 2005-09-14 Sapa Heat Transfer AB Hochfeste Aluminiumlegierung für Kühlrippen zum Löten
EP1580286A2 (de) 2004-03-22 2005-09-28 Sapa Technology Rohrmaterial aus hochfester Aluminiumlegierung mit langer Lebensdauer und hoher Durchhangbeständigkeit

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1330560A (en) * 1970-12-28 1973-09-19 Sumitomo Electric Industries Aluminum alloy for electrical conductors and a method of manufacturing the same
GB1423844A (en) * 1972-04-27 1976-02-04 Elektrokoppar Ab Electrically conducting material
EP0185567A1 (de) 1984-11-21 1986-06-25 Societe Anonyme Painsol Stützelement für Paletten
JPH0448045A (ja) * 1990-06-15 1992-02-18 Nippon Light Metal Co Ltd 非腐食性フラックスろう付け用アルミニウムブレージングシート
JPH04318144A (ja) * 1991-04-17 1992-11-09 Kobe Steel Ltd 強度、焼付硬化性かつ成形性に優れたＡｌ合金板及びその製造方法
JPH06272001A (ja) * 1993-03-19 1994-09-27 Furukawa Alum Co Ltd 加熱硬化性に優れたＡｌ−Ｍｇ−Ｓｉ系合金板材の製造方法
JP2000273563A (ja) * 1999-03-18 2000-10-03 Sky Alum Co Ltd 陽極酸化処理後の色調が灰色で安定なアルミニウム合金圧延板およびその製造方法
EP1435397B1 (de) 2002-10-14 2005-09-14 Sapa Heat Transfer AB Hochfeste Aluminiumlegierung für Kühlrippen zum Löten
WO2005011889A1 (en) 2003-07-30 2005-02-10 Corning Incorporated Metal honeycomb substrates for chemical and thermal applications
EP1580286A2 (de) 2004-03-22 2005-09-28 Sapa Technology Rohrmaterial aus hochfester Aluminiumlegierung mit langer Lebensdauer und hoher Durchhangbeständigkeit

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9064852B1 (en) * 2011-12-05 2015-06-23 The Peregrine Falcon Corporation Thermal pyrolytic graphite enhanced components
CN102660693A (zh) * 2011-12-15 2012-09-12 贵州华科铝材料工程技术研究有限公司 采用TiN及BeH2粉末处理的铝合金及其制备方法
CN102660693B (zh) * 2011-12-15 2013-06-26 贵州华科铝材料工程技术研究有限公司 采用TiN及BeH2粉末处理的铝合金及其制备方法
US9546829B2 (en) 2013-03-13 2017-01-17 Novelis Inc. Brazing sheet core alloy for heat exchanger
US9545777B2 (en) 2013-03-13 2017-01-17 Novelis Inc. Corrosion-resistant brazing sheet package
CN104233020A (zh) * 2014-09-08 2014-12-24 南南铝业股份有限公司 大功率散热器用铝合金及其熔体的净化方法
CN104233019A (zh) * 2014-09-08 2014-12-24 南南铝业股份有限公司 家电拉手用铝合金及其熔体的净化方法
CN104233020B (zh) * 2014-09-08 2016-04-06 南南铝业股份有限公司 大功率散热器用铝合金及其熔体的净化方法
CN104233019B (zh) * 2014-09-08 2016-06-29 南南铝业股份有限公司 家电拉手用铝合金及其熔体的净化方法
WO2023035831A1 (zh) * 2021-09-08 2023-03-16 江苏亨通电力特种导线有限公司 一种挤压用铝合金及其制备方法

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