EP2243849B1 - Mangan- und hoch magnesiumreiches Aluminiumband - Google Patents

Mangan- und hoch magnesiumreiches Aluminiumband Download PDF

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Publication number
EP2243849B1
EP2243849B1 EP09158704.8A EP09158704A EP2243849B1 EP 2243849 B1 EP2243849 B1 EP 2243849B1 EP 09158704 A EP09158704 A EP 09158704A EP 2243849 B1 EP2243849 B1 EP 2243849B1
Authority
EP
European Patent Office
Prior art keywords
aluminium alloy
printing plate
strip
content
aluminium
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.)
Not-in-force
Application number
EP09158704.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2243849A1 (de
Inventor
Bernhard Kernig
Jochen Hasenclever
Gerd Steinhoff
Christoph Settele
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.)
Speira 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
Priority to ES09158704T priority Critical patent/ES2430620T3/es
Application filed by Hydro Aluminium Deutschland GmbH filed Critical Hydro Aluminium Deutschland GmbH
Priority to EP09158704.8A priority patent/EP2243849B1/de
Priority to KR1020117027959A priority patent/KR20120010267A/ko
Priority to BRPI1015252A priority patent/BRPI1015252A2/pt
Priority to JP2012506519A priority patent/JP2012524841A/ja
Priority to RU2011147705/02A priority patent/RU2011147705A/ru
Priority to CN2010800182724A priority patent/CN102439185A/zh
Priority to PCT/EP2010/055435 priority patent/WO2010122144A1/de
Publication of EP2243849A1 publication Critical patent/EP2243849A1/de
Priority to US13/278,561 priority patent/US20120073711A1/en
Application granted granted Critical
Publication of EP2243849B1 publication Critical patent/EP2243849B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status 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
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • 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
    • B21B2003/001—Aluminium or its alloys
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12229—Intermediate article [e.g., blank, etc.]

Definitions

  • the invention relates to an aluminum alloy for the production of lithographic printing plate supports and to an aluminum strip produced from the aluminum alloy, to a method for producing the aluminum strip and to its use for the production of lithographic printing plate supports.
  • Aluminum strips for the production of lithographic printing plate carriers must have a very high quality and are therefore subject to constant further development.
  • the aluminum strip has to live up to a complex property profile.
  • the aluminum strip is subjected to an electrochemical roughening, which must ensure a structureless appearance without streaking effects at the highest processing speed.
  • the roughened structure of the aluminum strip has the task that photosensitive layers, which are subsequently exposed, can be permanently applied to the printing plate support.
  • the photographic layers are baked at temperatures of 220 ° C to 300 ° C for a period of 3 to 10 minutes. Typical combinations of bake times and temperatures are for example 240 ° C for 10 minutes or 280 ° C for 4 minutes.
  • the printing plate support must continue to be easy to handle, to allow a clamping of the printing plate support in the printing device.
  • the softening of the printing plate support due to the baking process must therefore not be too strong.
  • it can be achieved by the highest possible tensile strength prior to baking that the tensile strength after firing is sufficiently high.
  • the straightening of the aluminum strip ie the elimination of a "coil set" of the aluminum strip prior to processing to the printing plate support is made difficult by a high tensile strength before baking.
  • increasingly printing presses are used with the largest possible printing surfaces, so that the printing plate support no longer need to be clamped longitudinally to the rolling direction but transverse to the rolling direction to allow for oversized printing widths.
  • the publication EP 0 239 995 A2 discloses an aluminum alloy for the production of printing plates having a Si content of at most 0.2 wt .-%, an Fe content of 0.05 to 0.5 wt .-%, a Mg content of 0.1 to 0 , 9 wt .-%, an Mn content of 0.05 to 2 wt .-%, a Cu content of at most 0.05 wt .-%, a Zr content of 0.01 to 0.3 wt. -% and a V and / or Ni content of 0.01 to 0.3 wt .-%.
  • the Zr, V and Ni contents serve to improve the thermal softening properties.
  • the EP 1 293 579 A2 describes a printing plate support, which is made of an aluminum alloy. It discloses an aluminum alloy which in addition to an Si content of up to 0.5 wt .-%, an Fe content of up to 1.0 wt .-%, an Mg content of 0.1 to 1.5 Wt .-%, an Mn content of 0.1 to 1.5 wt .-% and a Cu content of up to 0.2 wt .-% further elements such as lithium, beryllium, scandium, molybdenum, silver, Germanium, cerium, neodymium, dysprosium and gold.
  • the EP 1 676 931 A2 relates to an aluminum alloy for printing plates. It discloses an aluminum alloy having an Si content of up to 0.25 wt.%, An Fe content of 0.11 to to 0.4 wt%, an Mg content of 0.05 to 0.30 wt%, an Mn content of 0.05 to 0.25 wt%, a Ti content of up to 0.03 wt.%, a B content of up to 0.01 wt.%, a Cu content of up to 0.01 wt.%, a Cr content of up to 0.03 Wt .-% and a Zn content of up to 0.15 wt .-%.
  • the present invention has the object to provide an aluminum alloy and an aluminum strip of aluminum alloy, which or which enables the production of printing plate supports with improved flexural fatigue resistance transverse to the rolling direction with improved heat resistance without worsening properties are deteriorated.
  • the object of the present invention is to specify a production method for an aluminum strip which is particularly suitable for the production of lithographic printing plate supports to be transversely clamped.
  • the above-mentioned object for an aluminum alloy for producing lithographic printing plate supports is achieved in that the aluminum alloy has the following alloy components in% by weight: Fe ⁇ 0 . 4 % . 0 . 41 % ⁇ mg ⁇ 0 . 7 % . 0 . 05 % ⁇ Si ⁇ 0 . 25 % . 0 . 1 % ⁇ Mn ⁇ 0 . 6 % . Cu ⁇ 0 . 04 % . Ti ⁇ 0 . 1 % . Zn ⁇ 0 . 1 % . Cr ⁇ 0 . 1 % .
  • Residual Al and unavoidable impurities individually max. 0.05%, in total max. 0.15%.
  • the present aluminum alloy according to the invention combines relatively high magnesium contents of at least 0.41% by weight to a maximum of 0.7% by weight. with relatively high manganese contents of 0.1 to 0.6 wt .-%. As a result, it was found that due to the combination of high manganese and magnesium contents, the aluminum alloy according to the invention not only has a very good flexural fatigue resistance transverse to the rolling direction.
  • the handling of the pressure plate carrier produced from the aluminum alloy according to the invention is good and the process reliability during production to ensure the mechanical properties before and after the baking process is particularly high.
  • the permiss high levels of manganese and magnesium contrary to the expectations of the experts, there were no problems with being stolen.
  • the low iron content which is limited to less than 0.4% by weight, stabilizes the roughening behavior of the printing plate supports.
  • a good roughening behavior is also effected by silicon, which is contained in a content of 0.05 wt .-% to 0.25 wt .-% in the aluminum alloy according to the invention.
  • the Si content according to the invention ensures that a high number of sufficiently deep recesses is generated in order to ensure optimum absorption of the photosensitive coating.
  • Copper should be limited to a maximum of 0.04 wt .-% in order to avoid inhomogeneous structures when roughening.
  • Titanium which is introduced into the aluminum alloy for grain refining of the melt, leads to roughening problems at higher contents of more than 0.1% by weight.
  • the contents of zinc and chromium negatively influence the roughening result and should therefore amount to a maximum of 0.1% by weight.
  • the heat resistance of the aluminum alloy can be further increased according to a first embodiment of the aluminum alloy according to the invention in that the aluminum alloy has the following Mn content in% by weight: 0 . 26 % ⁇ Mn ⁇ 0 . 6 % . preferably 0 . 5 % ⁇ Mn ⁇ 0 . 6 % ,
  • this has an Mg content in% by weight of: 0 . 5 % ⁇ mg ⁇ 0 . 7 % on,
  • the bending fatigue strength can be increased again transverse to the rolling direction.
  • the aluminum alloy according to the invention can therefore be further improved in terms of process reliability during roughening and thus with regard to its use for printing plate supports in that the aluminum alloy has the following alloy components in% by weight: Ti ⁇ 0 . 05 % . Zn ⁇ 0 . 05 % Cr ⁇ 0 . 01 % ,
  • an aluminum strip for producing lithographic printing plate supports consisting of an aluminum alloy according to the invention having a thickness of 0.15 mm to 0.5 mm.
  • the aluminum strip according to the invention is distinguished not only by its excellent roughening, but also guarantees a very good heat resistance with moderate tensile strength values optimized handling in relation to the use of oversized printing devices and transversely clamped printing plate supports. This is mainly due to the excellent bending fatigue strength transverse to the rolling direction of the aluminum strip according to the invention.
  • this has, after a baking process with a temperature of 280 ° C and a duration of 4 minutes a tensile strength Rm of more than 145 MPa, a yield strength Rp 0.2 of more than 135 MPa and a bending resistance transverse to the rolling direction of more than 1950 cycles in the bending cycle test. Since the aluminum strip according to the invention has a very good hot strength, it is possible by conventional process parameters to set the tensile strength values before the baking process in an ideal processing range, for example to perform the correction of a "coil set" and at the same time excellent handling and stability when used in oversized printing devices to enable.
  • the object indicated above is also achieved by the use of the aluminum strip according to the invention for the production of lithographic printing plate supports according to a third teaching of the present invention.
  • the above-described object is achieved by a method for producing an aluminum strip for lithographic printing plate supports consisting of an aluminum alloy according to the invention in that a rolling ingot is homogenized, the ingot is hot rolled to a thickness of 2 to 9 mm and the hot strip with or without intermediate annealing to a final thickness of 0.15 mm to 0.5 mm cold rolled.
  • the intermediate annealing if an intermediate annealing is carried out, takes place in such a way that a desired final strength of the aluminum strip in the hard-rolling state is set by the subsequent cold-rolling process to final thickness.
  • an intermediate annealing is carried out at an intermediate thickness of 0.5 to 2.8 mm, wherein the intermediate annealing takes place in a coil or in a continuous furnace at a temperature of 230 ° C to 470 ° C.
  • the final strength of the aluminum strip can be set in the hard-rolled state.
  • a final annealing can preferably be dispensed with in order to keep the production costs as low as possible.
  • the single drawing shows a schematic sectional view of a device for measuring the flexural fatigue resistance of the aluminum strips produced.
  • Table 1 now shows the alloy composition of a reference aluminum alloy Ref and inventive aluminum alloys I3, I4, I6 and 17, which have been investigated in the following.
  • the composition details in Table 1 are in weight percent.
  • Table 1 alloy Si Fe Cu Mn mg Cr Zn Ti rest Ref 0.08 0.35 ⁇ 0.002 0.0075 0.2 ⁇ 0.003 0,012 0.0075 0.0075 I3 0.08 0.35 ⁇ 0.002 0.26 0.41 ⁇ 0.003 0,012 0.0075 0.0075 I4 0.08 0.35 ⁇ 0.002 0.26 0.6 ⁇ 0.003 0,012 0.0075 0.0075 I6 0.08 0.35 ⁇ 0.002 0.5 0.41 ⁇ 0.003 0,012 0.0075 0.0075 I7 0.08 0.35 ⁇ 0.002 0.5 0.6 ⁇ 0.003 0,012 0.0075 0.0075 I7 0.08 0.35 ⁇ 0.002 0.5 0.6 ⁇ 0.003 0,012 0.0075 0.0075 0.0075
  • the inventive alloys I3, I4, 16 and 17 contain compared to the reference aluminum alloy a significantly higher manganese content of 0.26 wt .-% to 0.5 wt .-%.
  • the Mg content varies from 0.41% to 0.6% by weight.
  • Rolled ingots were cast from the aluminum alloys with the just mentioned compositions. The rolling ingot was then homogenized at a temperature of 450 ° C to 610 ° C and hot rolled to a hot strip thickness of 4 mm. The cold rolling to a final thickness of 0.3 mm was carried out without and with intermediate annealing, wherein the intermediate annealing was carried out at a strip thickness of 0.9 to 1.2 mm, preferably at 1.1 mm. Two different temperature ranges were used in the intermediate annealing, namely 300 ° C to 350 ° C and 400 ° C to 450 ° C.
  • the aluminum strips produced according to the method just described were subjected to electrochemical roughening to test suitability for the manufacture of printing plate supports. Surprisingly, despite the relatively high magnesium and manganese contents of the aluminum alloys according to the invention, contrary to the expectations of the experts, there were no negative signs with regard to possible streaking effects after roughening.
  • the aluminum alloys according to the invention are therefore all characterized by a very good or good roughening behavior.
  • Table 3 shows, on the one hand, the results of the bending change test and the associated values for the strip thickness and the temperature ranges during the intermediate annealing. Experiments without intermediate annealing were also carried out. Table 3 Bending cycles across the rolling direction alloy Experiment No.
  • Thickness of intermediate annealing (mm) Temperature of intermediate annealing (° C) As-rolled Branded (280 ° C / 4min) Ref R 2.2 400 - 450 1928 1274 I3 3.1 - - 3461 1959 I3 3.2 0.9 - 1.2 300-350 2116 3228 I3 3.3 0.9-1.2 400-450 2272 2815 I4 4.1 - - 3235 2177 I4 4.2 0.9 - 1.2 300 - 350 2434 3568 I4 4.3 0.9 - 1.2 400 - 450 3595 3929 I6 6.1 - - 3208 2425 I6 6.2 0.9 - 1.2 300 - 350 2808 3099 I6 6.3 0.9 - 1.2 400 - 450 2937 3599 I7 7.1 - - 4951 2958 I7 7.2 0.9-1.2 300-350 3506 3372 I7 7.3 0.9-1.2 400 - 450 3058 3230
  • the number of possible bending cycles transversely to the rolling direction was significantly increased, both in the hard-rolled state and in the baked state.
  • the minimum number of bending cycles transverse to the rolling direction in the baked state is 1.5 times higher with 1959 bending cycles than with the reference alloy.
  • the aluminum alloy according to the invention is therefore particularly suitable for the production of oversized printing plate supports which are clamped in printing devices transversely to the rolling direction.
  • FIG. 1a is now schematically the bending change device 1, which has been used to determine the number of possible Biege Cauklen represented.
  • the Biege grilltestvoriques 1 consists on the one hand of a movable segment 3, which is arranged on a fixed segment 4 such that the segment 3 is reciprocated in the bending change test by a rolling movement on the fixed segment 4, so that the fixed sample 2 bends perpendicular to Extension of the sample is exposed.
  • a sample of the aluminum strip according to the invention must only be cut transversely to the rolling direction and clamped in the bending cycle test device 1.
  • the radius of the segments 3, 4 is 30 mm. The number of bending cycles was measured, whereby the bending cycle is completed when the starting position of the segment 3 is reached.

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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)
  • Printing Plates And Materials Therefor (AREA)
EP09158704.8A 2009-04-24 2009-04-24 Mangan- und hoch magnesiumreiches Aluminiumband Not-in-force EP2243849B1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP09158704.8A EP2243849B1 (de) 2009-04-24 2009-04-24 Mangan- und hoch magnesiumreiches Aluminiumband
ES09158704T ES2430620T3 (es) 2009-04-24 2009-04-24 Banda de aluminio rica en manganeso y muy rica en magnesio
BRPI1015252A BRPI1015252A2 (pt) 2009-04-24 2010-04-23 tira de alumínio rica em manganês e muito rica em magnésio
JP2012506519A JP2012524841A (ja) 2009-04-24 2010-04-23 マンガンリッチ及び高度にマグネシウムリッチなアルミニウムストリップ
KR1020117027959A KR20120010267A (ko) 2009-04-24 2010-04-23 망간 및 마그네슘의 함량이 높은 알루미늄 스트립
RU2011147705/02A RU2011147705A (ru) 2009-04-24 2010-04-23 Алюминиевая лента с высоким содержанием марганца и очень высоким содержанием магния
CN2010800182724A CN102439185A (zh) 2009-04-24 2010-04-23 富含锰和极富含镁的铝带
PCT/EP2010/055435 WO2010122144A1 (de) 2009-04-24 2010-04-23 Mangan- und hoch magnesiumreiches aluminiumband
US13/278,561 US20120073711A1 (en) 2009-04-24 2011-10-21 Manganese-rich and highly magnesium-rich aluminium strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09158704.8A EP2243849B1 (de) 2009-04-24 2009-04-24 Mangan- und hoch magnesiumreiches Aluminiumband

Publications (2)

Publication Number Publication Date
EP2243849A1 EP2243849A1 (de) 2010-10-27
EP2243849B1 true EP2243849B1 (de) 2013-07-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09158704.8A Not-in-force EP2243849B1 (de) 2009-04-24 2009-04-24 Mangan- und hoch magnesiumreiches Aluminiumband

Country Status (9)

Country Link
US (1) US20120073711A1 (ru)
EP (1) EP2243849B1 (ru)
JP (1) JP2012524841A (ru)
KR (1) KR20120010267A (ru)
CN (1) CN102439185A (ru)
BR (1) BRPI1015252A2 (ru)
ES (1) ES2430620T3 (ru)
RU (1) RU2011147705A (ru)
WO (1) WO2010122144A1 (ru)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2243848B1 (de) * 2009-04-24 2016-03-30 Hydro Aluminium Rolled Products GmbH Mangan- und magnesiumreiches Aluminiumband
CN103572134A (zh) * 2013-11-05 2014-02-12 吴高峰 一种锰镁铝合金
CN109972000B (zh) * 2019-03-18 2020-10-02 江苏鼎胜新能源材料股份有限公司 一种热交换器用复合带材及其制备方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6126746A (ja) * 1984-07-18 1986-02-06 Kobe Steel Ltd 平版印刷版用アルミニウム合金
JPH07100844B2 (ja) * 1985-10-04 1995-11-01 日本軽金属株式会社 オフセツト印刷用アルミニウム合金支持体の製造方法
JPS62230946A (ja) 1986-04-01 1987-10-09 Furukawa Alum Co Ltd 平版印刷版用アルミニウム合金支持体
JPH09111427A (ja) * 1995-10-19 1997-04-28 Kobe Steel Ltd 印刷版用アルミニウム合金板及びその製造方法
DE29924474U1 (de) 1999-07-02 2003-08-28 Hydro Aluminium Deutschland Lithoband
JP2001220638A (ja) * 2000-02-08 2001-08-14 Kobe Steel Ltd 表面品質に優れたアルミニウム合金およびその成分設計方法
AU2002222144A1 (en) 2000-12-11 2002-06-24 Alcan International Limited Aluminium alloy for lithographic sheet
US6808864B2 (en) 2001-09-12 2004-10-26 Fuji Photo Film Co., Ltd. Support for lithographic printing plate and presensitized plate
JP2007070674A (ja) * 2005-09-06 2007-03-22 Fujifilm Holdings Corp 平版印刷版用アルミニウム合金板およびその製造方法
CN101321882B (zh) 2005-10-19 2011-09-21 海德鲁铝业德国有限责任公司 用于石版印刷板支持体的铝带
EP2243848B1 (de) * 2009-04-24 2016-03-30 Hydro Aluminium Rolled Products GmbH Mangan- und magnesiumreiches Aluminiumband

Also Published As

Publication number Publication date
CN102439185A (zh) 2012-05-02
EP2243849A1 (de) 2010-10-27
RU2011147705A (ru) 2013-05-27
WO2010122144A1 (de) 2010-10-28
KR20120010267A (ko) 2012-02-02
BRPI1015252A2 (pt) 2016-05-03
ES2430620T3 (es) 2013-11-21
JP2012524841A (ja) 2012-10-18
US20120073711A1 (en) 2012-03-29

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