EP1110631A1 - Procédé pour la fabrication d'une bande d'aluminium pour plaques d'impression lithographique - Google Patents

Procédé pour la fabrication d'une bande d'aluminium pour plaques d'impression lithographique Download PDF

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Publication number
EP1110631A1
EP1110631A1 EP99811203A EP99811203A EP1110631A1 EP 1110631 A1 EP1110631 A1 EP 1110631A1 EP 99811203 A EP99811203 A EP 99811203A EP 99811203 A EP99811203 A EP 99811203A EP 1110631 A1 EP1110631 A1 EP 1110631A1
Authority
EP
European Patent Office
Prior art keywords
strip
thickness
cast
rolled
lithographic printing
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Withdrawn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
EP99811203A
Other languages
German (de)
English (en)
Inventor
Günter Höllrigl
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
Alusuisse Technology and Management Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcan Technology and Management Ltd, Alusuisse Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP99811203A priority Critical patent/EP1110631A1/fr
Priority to HU0203748A priority patent/HUP0203748A2/hu
Priority to PCT/EP2000/012649 priority patent/WO2001047649A1/fr
Priority to CA002395166A priority patent/CA2395166A1/fr
Priority to US10/149,420 priority patent/US20020189725A1/en
Priority to JP2001548230A priority patent/JP2003518554A/ja
Priority to AU18635/01A priority patent/AU1863501A/en
Publication of EP1110631A1 publication Critical patent/EP1110631A1/fr
Priority to NO20023046A priority patent/NO20023046L/no
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/04—Printing plates or foils; Materials therefor metallic
    • B41N1/08—Printing plates or foils; Materials therefor metallic for lithographic printing
    • B41N1/083—Printing plates or foils; Materials therefor metallic for lithographic printing made of aluminium or aluminium alloys or having such surface layers
    • 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
    • B21B3/003—Rolling non-ferrous metals immediately subsequent to continuous casting, i.e. in-line rolling
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/04—Graining or abrasion by mechanical means

Definitions

  • the invention relates to a method for producing a strip from aluminum or an aluminum alloy for electrolytically roughened lithographic printing plates, the metal being continuously cast into a strip and the cast strip subsequently being cold-rolled to final thickness (d e ).
  • the scope of the invention also includes lithographic printing plates with an electrolytically roughened surface.
  • Aluminum tapes are predominantly used today for the production of lithographic printing plates used by hot and cold rolling - with engagement an intermediate annealing - be made from continuous cast ingots.
  • an intermediate annealing - be made from continuous cast ingots.
  • Various attempts have been made in recent years to to process strip cast aluminum materials to lithographic printing plates.
  • EP-A-0 821 074 describes a process for producing an aluminum strip disclosed for lithographic printing plates in which the metal is continuous in the casting roll gap between the cooled rolls of a strip casting machine cast into a strip and the cast strip subsequently without intermediate annealing is rolled to final thickness. Often include specifications for litho sheets maximum values for the strength, which only then without intermediate annealing can be observed if the thickness of the cast Band is significantly less than 3 mm. Such small cast strip thicknesses are however in good use with conventional band casting machines in practice Quality is not easy to manufacture.
  • EP-A-0 653 497 describes a process for producing an aluminum strip known for lithographic printing plates, in which initially a cast strip with a thickness of max. 3 mm also by means of a casting and rolling system will be produced.
  • the cast strip produced in this way is annealed annealed recrystallizing during cold rolling. This glow is at a temperature of at least 300 ° C and with a heating up time of at least 1 ° C / sec stationary in an oven on the coil or, preferably at temperatures from 400 to 550 ° C, carried out in a continuous annealing furnace. After this annealing, the cast strip is directly to a maximum final thickness 0.5 mm cold rolled.
  • the invention has for its object a method of the aforementioned Art to create, which without a costly investment to one Litho tape with good strength even after a paint bake cycle leads the lithographic printing plates produced.
  • the core of the method which is essential to the invention, is intermediate annealing, which only serves to restore the structure and not to form new grains leads, as in the usual recrystallizing intermediate annealing the state of the art.
  • Aluminum strips with the recovery annealing according to the invention lead to less drop in strength after a paint baking cycle than tapes, which have been annealed to recrystallize.
  • the method according to the invention thus leads to lithographic printing plates, which also in connection with high paint baking temperatures of up to 300 ° C advantages over conventionally manufactured litho sheets offer their ultimate strength.
  • the metal is preferably to a thickness of max. 3.5 mm, especially 2.0 up to 3.0 mm, preferably 2.4 to 2.8 mm, cast. This gives the cast Tape an ideal microstructure in a near-surface area that in Combination with the recovery annealing according to the invention to the final thickness rolled strip to a surface structure with excellent etching behavior.
  • any strip casting process can be used to produce the cast strip are used, ideally a rapid solidification simultaneous hot forming in the casting roll gap is desired.
  • the two the latter properties are fulfilled, for example, by the casting and rolling process, in which the metal in the casting roll gap between cooled rolls to the Tape is poured.
  • the cast strip cold rolling with non-recrystallizing intermediate annealing remains the advantageous one Microstructure in the areas near the surface as a result of faster Preserve solidification.
  • the continuous casting process also enables high solidification speeds and very fine grain sizes in areas near the surface through dynamic recovery immediately after the cast Strip from the casting roll nip.
  • the further processing of the cast tape is done by reeling the cast tape into a bundle of the desired size.
  • Processing step is for producing the tape in one Litho sheet suitable cold rolling mill to the desired intermediate thickness and after the recovery annealing continue to the desired final thickness in the usual way Rolled range of about 150 to 300 microns.
  • the intermediate thickness at which the recovery annealing is carried out, the temperature as well as the duration of the relaxation glow depends on the one hand the initial thickness of the cast strip and, on the other hand, the composition of the material used. Using a simple series of experiments however, the person skilled in the art can readily generate the desired one Determine recovery parameters required.
  • the cast tape is at least 50% of the total Thickness-reduced intermediate thickness rolled, the appropriate intermediate thickness is about 1.0 to 1.6 mm.
  • the annealing of the strip rolled down to the intermediate thickness takes place preferably in a temperature range from 260 to 300 ° C, expediently in a temperature range of about 270 to 290 ° C, which on Intermediate-thickness rolled strip annealed for a period of about 2 to 5 hours becomes.
  • one according to the invention manufactured tape on excellent mechanical properties, so e.g. high strength, even during the baking of a photosensitive Lacquer in the production of lithographic printing plates only insignificantly decreases.
  • the tape produced according to the invention is equally suitable for etching in HCI and HNO 3 electrolytes, the advantages of the microstructure obtained being particularly apparent when etching in an HNO 3 electrolyte.
  • alloys for the production of the strip according to the invention all commonly used to make lithographic printing plates used aluminum materials are used. Particularly preferred are alloys from the AA 1xxx, AA 3xxx or AA 8xxx series, for example the alloys AA 1050, AA 1200 or AA 3103.
  • the above-mentioned advantageous microstructure in the area of the belt near the surface essentially results from the rapid solidification on the surface.
  • the secondary phase particles are separated out in the microstructure in a very fine form and in high density.
  • These particles act as the first points of attack for the etching, especially when the electrochemical roughening is carried out in an HNO 3 electrolyte.
  • the particles mentioned have an average distance of less than 5 ⁇ m and thereby form a coherent network of uniform surface attack points. Starting from these first points of attack, distributed uniformly and in high density over the entire strip surface, the growth of the actual three-dimensional roughness pattern begins.
  • the small size of the intermetallic phases mentioned has the further advantage that they considerably shorten the period of electrochemical dissolution in the initial phase of the etching, as a result of which electrical energy can be saved. Since the rapid solidification in the surface areas of the belt preferably results in imbalance phases, the dissolution rate of the fine particles mentioned is high.
  • the tape produced is the small grain size that occurs during tape casting in the areas near the surface.
  • the high density of the Penetration points of the grain boundaries on the surface lead along with a high density of defects in the grains even at chemically active points of attack for the continuous formation of new etch pits.
  • Electrolytes made from dilute hydrochloric acid (HCI) and electrolytes made from dilute nitric acid (HNO 3 ) are used for this purpose.
  • etching is now carried out in the nitric acid electrolyte, it shows the practice that a uniform etching structure only if certain Etching parameters can be achieved. For example, for economic reasons if the charge (coulomb) is too small, irregular results Etch images with mostly strip-like areas where no etching attack took place. If etching takes place under these critical conditions, then come all subtle differences in the structure of the substrate (litho tape) to the fore and you can get a classification of the litho materials used determine.
  • the advantage of the invention is evident with the interposition of a recovery annealing manufactured strip material compared to a tape material with a recrystallizing Intermediate annealing, especially for lithographic printing plates after a Paint baking cycle at temperatures in the range of about 270 to 300 ° C.
  • the temperature and time information refer to the duration of the annealing at metal temperature after the tape at a heating rate of 100 ° C / h has been heated to the annealing temperature. As more characteristic The elongation at break (Rm) was determined.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
EP99811203A 1999-12-23 1999-12-23 Procédé pour la fabrication d'une bande d'aluminium pour plaques d'impression lithographique Withdrawn EP1110631A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP99811203A EP1110631A1 (fr) 1999-12-23 1999-12-23 Procédé pour la fabrication d'une bande d'aluminium pour plaques d'impression lithographique
HU0203748A HUP0203748A2 (en) 1999-12-23 2000-12-13 Method for producing an aluminium strip for lithographic printing plates
PCT/EP2000/012649 WO2001047649A1 (fr) 1999-12-23 2000-12-13 Procede de fabrication d'une bande d'aluminium pour plaques d'impression lithographique
CA002395166A CA2395166A1 (fr) 1999-12-23 2000-12-13 Procede de fabrication d'une bande d'aluminium pour plaques d'impression lithographique
US10/149,420 US20020189725A1 (en) 1999-12-23 2000-12-13 Method for producing an aluminium strip for lithographic printing plates
JP2001548230A JP2003518554A (ja) 1999-12-23 2000-12-13 平版印刷プレート用のアルミニウムのストリップを製造する方法
AU18635/01A AU1863501A (en) 1999-12-23 2000-12-13 Method for producing an aluminium strip for lithographic printing plates
NO20023046A NO20023046L (no) 1999-12-23 2002-06-21 Fremgangsmåte for fremstilling av et aluminiumbånd for litografiske trykkplater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99811203A EP1110631A1 (fr) 1999-12-23 1999-12-23 Procédé pour la fabrication d'une bande d'aluminium pour plaques d'impression lithographique

Publications (1)

Publication Number Publication Date
EP1110631A1 true EP1110631A1 (fr) 2001-06-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99811203A Withdrawn EP1110631A1 (fr) 1999-12-23 1999-12-23 Procédé pour la fabrication d'une bande d'aluminium pour plaques d'impression lithographique

Country Status (8)

Country Link
US (1) US20020189725A1 (fr)
EP (1) EP1110631A1 (fr)
JP (1) JP2003518554A (fr)
AU (1) AU1863501A (fr)
CA (1) CA2395166A1 (fr)
HU (1) HUP0203748A2 (fr)
NO (1) NO20023046L (fr)
WO (1) WO2001047649A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113770180B (zh) * 2021-08-19 2023-01-10 山东理工大学 一种细化7000系铝合金厚板晶粒的热轧方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0603476A2 (fr) * 1992-11-20 1994-06-29 Fuji Photo Film Co., Ltd. Support de plaque pour l'impression planographique et procédé de fabrication
EP0640694A1 (fr) * 1993-08-31 1995-03-01 Nippon Light Metal Co., Ltd. Substrat en alliage d'aluminium pour une plaque d'impression lithographique et procédé de fabrication
EP0653497A1 (fr) * 1993-11-15 1995-05-17 Fuji Photo Film Co., Ltd. Méthode pour fabriquer un support d'une plaque d'impression à plat
EP0821074A1 (fr) * 1996-07-25 1998-01-28 Alusuisse Technology & Management AG Procédé pour la production d'une bande en alliage d'aluminium pour plaques d'impression lithographique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0603476A2 (fr) * 1992-11-20 1994-06-29 Fuji Photo Film Co., Ltd. Support de plaque pour l'impression planographique et procédé de fabrication
EP0640694A1 (fr) * 1993-08-31 1995-03-01 Nippon Light Metal Co., Ltd. Substrat en alliage d'aluminium pour une plaque d'impression lithographique et procédé de fabrication
EP0653497A1 (fr) * 1993-11-15 1995-05-17 Fuji Photo Film Co., Ltd. Méthode pour fabriquer un support d'une plaque d'impression à plat
EP0821074A1 (fr) * 1996-07-25 1998-01-28 Alusuisse Technology & Management AG Procédé pour la production d'une bande en alliage d'aluminium pour plaques d'impression lithographique

Also Published As

Publication number Publication date
JP2003518554A (ja) 2003-06-10
AU1863501A (en) 2001-07-09
CA2395166A1 (fr) 2001-07-05
NO20023046L (no) 2002-07-01
HUP0203748A2 (en) 2003-03-28
WO2001047649A1 (fr) 2001-07-05
US20020189725A1 (en) 2002-12-19
NO20023046D0 (no) 2002-06-21

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