EP3631023B1 - Procédé de traitement de surface d'un cylindre frictionneur en acier - Google Patents

Procédé de traitement de surface d'un cylindre frictionneur en acier Download PDF

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Publication number
EP3631023B1
EP3631023B1 EP18722893.7A EP18722893A EP3631023B1 EP 3631023 B1 EP3631023 B1 EP 3631023B1 EP 18722893 A EP18722893 A EP 18722893A EP 3631023 B1 EP3631023 B1 EP 3631023B1
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EP
European Patent Office
Prior art keywords
yankee
cylinder
treating
yankee cylinder
steel
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.)
Active
Application number
EP18722893.7A
Other languages
German (de)
English (en)
Other versions
EP3631023A1 (fr
Inventor
Yassar GHANIMI
Michael JESSE
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.)
Andritz AG
Original Assignee
Andritz AG
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Filing date
Publication date
Application filed by Andritz AG filed Critical Andritz AG
Priority to PL18722893T priority Critical patent/PL3631023T3/pl
Priority to SI201830217T priority patent/SI3631023T1/sl
Publication of EP3631023A1 publication Critical patent/EP3631023A1/fr
Application granted granted Critical
Publication of EP3631023B1 publication Critical patent/EP3631023B1/fr
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Classifications

    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/52—Methods of heating with flames
    • 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
    • C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
    • C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/021—Construction of the cylinders
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/009—Pearlite
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders

Definitions

  • the subject of this invention is a method for treating a Yankee cylinder, the Yankee cylinder having a cylinder jacket made of steel with a ferritic-pearlitic structure.
  • Yankee cylinders usually have a very large diameter. They are heated from the inside with steam and are difficult to manufacture because very high requirements have to be met in terms of internal pressures, tightness and large diameters.
  • Yankee cylinders for example, have the following dimensions: Cylinder diameter: 2000 mm to 6500 mm Hollow shaft diameter: 1000 mm to 2500 mm Cylinder length: 3000 mm to 8500 mm Cylinder mass: 35 t to 180 t
  • a doctor blade rests on the outer circumferential surface of the Yankee cylinder, with which the dried fibrous web is scraped off the Yankee surface. If the doctor blade comes into contact with the cylinder surface, it cannot be ruled out that material will be removed from the Yankee surface. To reduce this material removal, it is common to use the Yankee surface to be coated with a hard material layer.
  • the EP 2 474 665 A1 describes, for example, a Yankee cylinder that is coated with a corresponding hard material layer.
  • Yankee cylinders made of steel have a higher drying performance than cast cylinders due to the better thermal conductivity of steel.
  • the main disadvantage of this thermally sprayed-on layer is its relatively low thermal conductivity.
  • the thermal conductivity of a thermally sprayed layer is only in the range of 3 - 7 W / mK.
  • Opposite that points the steel jacket of the Yankee has a thermal conductivity of up to 45 W / mK.
  • the DE 10 2012 104 464 A1 describes a Yankee cylinder in which the surface is refined by laser treatment.
  • the aim of the invention is to provide a method for the surface treatment of a Yankee cylinder made of steel which results in a surface layer that is as hard as possible and has a high thermal conductivity.
  • the outer surface of the cylinder jacket is heat-treated with a laser beam and thus hardened.
  • the entire outer surface of the Yankee cylinder jacket is scanned by a laser beam, heated and thus hardened.
  • the surface of the Yankee cylinder is briefly heated by the laser beam to a temperature between 800 ° C and 900 ° C, after which the cooling of the austenitized layer remains below the lower critical cooling rate, so that the formation of martensite is prevented.
  • a steel yankee hardened according to the invention thus has a 7% higher heat transfer and enables a production increase of 5% compared to conventionally coated yankee cylinders made of steel.
  • the thickness of the hardened surface layer is between 0.3 and 1.5 mm.
  • P355NH (DIN EN 10028-3) is a good base material.
  • This fine-grain structural steel is characterized by a minimum yield strength of 275-460 MPa as well as good weldability and brittle fracture resistance.
  • hardnesses of up to 400 HB can be achieved if hardening takes place in a conventional way.
  • a maximum hardness of 320HB is aimed for, with excellent thermal conductivity in the range of 45 W / mK.
  • the hardness of cast cylinders is in the range of 230 - 280 HB.
  • a high-power diode laser or CO 2 laser is preferably used for the heat treatment, so that heating rates of> 1000 ° C / s can be achieved.
  • a pattern can also be created on the cylinder surface, which can facilitate the formation of a chemical coating film.
  • Various secondary tasks can be fulfilled with chemical coating (adherence of the fibrous web to the cylinder surface, detachment of the fibrous web at the end of the drying process, as well as influencing the properties of the tissue produced).
  • the laser beam can burn a large number of depressions evenly distributed over the jacket surface into the surface, so that a porous surface is thereby produced.
  • the surface of the Yankee cylinder is polished after the heat treatment. As a rule, it is no longer necessary to sand the surface.
  • the outer surface of the cylinder jacket is heat-treated with several laser beams at the same time.
  • the largely finished Yankee cylinder is preferably clamped horizontally with its stub axles so that it can rotate.
  • the jacket surface is heat-treated using one or more laser beams.
  • the Yankee is rotated slowly so that the laser beam sweeps over the entire circumference.
  • the processing time can be reduced by using multiple lasers.
  • the treatment can be carried out using high-power diode lasers, which generate a powerful, high-energy laser beam. This leads to a very rapid partial heating of the component (> 1000 ° C / s).
  • the Yankee is polished after the heat treatment, but it is also conceivable that polishing can be dispensed with.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Optics & Photonics (AREA)
  • Heat Treatment Of Articles (AREA)
  • Paper (AREA)
  • Laser Beam Processing (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Claims (6)

  1. Procédé de traitement d'un Yankee cylindre, le Yankee cylindre ayant une enveloppe de cylindre constituée d'acier à structure ferritoperlitique, la surface externe de l'enveloppe du cylindre étant thermo-traitée par faisceau laser et ainsi durcie, caractérisé en ce que la surface est chauffée par le faisceau laser à une température comprise entre 800°C et 900°C et le refroidissement de la couche austénitique demeurant en-dessous de la vitesse de refroidissement critique inférieure de manière à empêcher la formation de martensite, la structure ferritoperlitique étant largement conservée.
  2. Procédé de traitement d'un Yankee cylindre selon la revendication 1, caractérisé en ce qu'un acier de construction à grains fins P355NH soudable est utilisé pour l'enveloppe de cylindre.
  3. Procédé de traitement d'un Yankee cylindre selon l'une quelconque des revendications 1 à 2, caractérisé en ce que le traitement thermique est effectué à l'aide d'un laser à diode ou un laser à CO2.
  4. Procédé de traitement d'un Yankee cylindre selon la revendication 3, caractérisé en ce qu'une pluralité d'indentations réparties à intervalles réguliers sur la surface d'enveloppe sont cuites en surface, de manière à produire une surface poreuse.
  5. Procédé de traitement d'un Yankee cylindre selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la surface du Yankee cylindre est polie après le traitement thermique.
  6. Procédé de traitement d'un Yankee cylindre selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la surface extérieure de l'enveloppe de cylindre est traitée thermiquement simultanément par plusieurs rayons laser.
EP18722893.7A 2017-06-01 2018-03-22 Procédé de traitement de surface d'un cylindre frictionneur en acier Active EP3631023B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL18722893T PL3631023T3 (pl) 2017-06-01 2018-03-22 Sposób obróbki powierzchniowej stalowego cylindra Yankee
SI201830217T SI3631023T1 (sl) 2017-06-01 2018-03-22 Postopek za površinsko obdelavo jeklenega yankeeja

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50458/2017A AT519996B1 (de) 2017-06-01 2017-06-01 Verfahren zur Oberflächenbehandlung eines Stahlyankees
PCT/EP2018/057261 WO2018219516A1 (fr) 2017-06-01 2018-03-22 Procédé de traitement de surface d'un cylindre frictionneur en acier

Publications (2)

Publication Number Publication Date
EP3631023A1 EP3631023A1 (fr) 2020-04-08
EP3631023B1 true EP3631023B1 (fr) 2021-01-06

Family

ID=62116810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18722893.7A Active EP3631023B1 (fr) 2017-06-01 2018-03-22 Procédé de traitement de surface d'un cylindre frictionneur en acier

Country Status (12)

Country Link
US (1) US11414718B2 (fr)
EP (1) EP3631023B1 (fr)
CN (1) CN110741100B (fr)
AT (1) AT519996B1 (fr)
BR (1) BR112019022425B1 (fr)
DK (1) DK3631023T3 (fr)
ES (1) ES2863430T3 (fr)
HU (1) HUE054431T2 (fr)
PL (1) PL3631023T3 (fr)
PT (1) PT3631023T (fr)
SI (1) SI3631023T1 (fr)
WO (1) WO2018219516A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE1950671A1 (en) * 2019-06-05 2020-12-06 Valmet Oy A machine and a method for making tissue paper
JP2023546243A (ja) 2020-10-21 2023-11-01 バルメット、アクチボラグ ヤンキー乾燥シリンダ、およびティッシュペーパー製造機械

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
US4196689A (en) 1977-01-17 1980-04-08 J. M. Voith Gmbh Apparatus for drying paper webs or the like
JPS6021355A (ja) * 1983-07-13 1985-02-02 Mitsui Eng & Shipbuild Co Ltd 鋳鉄製シリンダライナ及びその製造法
JPS61266520A (ja) * 1985-05-20 1986-11-26 Brother Ind Ltd 鋳鉄製品の製造方法
CN1019024B (zh) * 1989-11-28 1992-11-11 江西省机械工业设计研究院 稀土铁素体球铁转向器壳体激光热处理工艺
FI88420B (fi) * 1991-03-20 1993-01-29 Valmet Paper Machinery Inc Foerfarande foer framstaellning av en vals och en vals
DE4241527A1 (de) * 1992-12-10 1994-06-16 Opel Adam Ag Verfahren zum Aufhärten und ggf. Glätten von Maschinenbauteilen sowie nach diesem Verfahren hergestellten Maschinenbauteilen
DE19629332C1 (de) * 1996-07-20 1997-06-05 Deutsche Bahn Ag Verfahren zur Herstellung einlaufverbessernder und verschleißreduzeriender Zylinderlaufflächen
JP2003231914A (ja) * 2002-02-13 2003-08-19 Toyota Motor Corp レーザ焼入れ方法
EP2476805B1 (fr) 2007-03-01 2013-08-21 Toscotec S.P.A. Cylindre Yankee pour machine à papier
DE102007000508B4 (de) 2007-10-15 2011-09-15 Koenig & Bauer Aktiengesellschaft Trockner für mindestens eine Materialbahn
DE202011001325U1 (de) 2011-01-11 2011-03-10 Shw Casting Technologies Gmbh Trockenzylinder für eine Tissue-Papiermaschine
CN102839260A (zh) * 2011-06-23 2012-12-26 中国石油天然气集团公司 一种细长管件内壁激光表面相变硬化方法
EP2628808A1 (fr) * 2012-02-15 2013-08-21 Longevity Engineering SA Durcissement localisé des surfaces métalliques
CN102605296A (zh) * 2012-03-13 2012-07-25 宝山钢铁股份有限公司 一种核电压力容器用钢及其制造方法
DE102012104464A1 (de) * 2012-05-23 2013-11-28 Gapcon Gmbh Temperierbarer Zylinder zur Behandlung von flächigen Materialien
US20160032527A1 (en) * 2012-10-09 2016-02-04 Journey Electronics Corp. Yankee drier profiler and control
SE538065C2 (sv) * 2013-03-13 2016-02-23 Valmet Aktiebolag Yankeecylinder tillverkad av stål
EP3556936B1 (fr) * 2018-04-17 2020-04-29 Valmet Aktiebolag Procédé de fabrication d'un cylindre yankee en acier

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Also Published As

Publication number Publication date
EP3631023A1 (fr) 2020-04-08
BR112019022425B1 (pt) 2023-02-14
CN110741100B (zh) 2022-03-25
AT519996A2 (de) 2018-12-15
US11414718B2 (en) 2022-08-16
WO2018219516A1 (fr) 2018-12-06
DK3631023T3 (da) 2021-04-12
SI3631023T1 (sl) 2021-04-30
ES2863430T3 (es) 2021-10-11
HUE054431T2 (hu) 2021-09-28
BR112019022425A2 (pt) 2020-05-19
AT519996B1 (de) 2020-03-15
AT519996A3 (de) 2020-03-15
PT3631023T (pt) 2021-03-15
US20200199697A1 (en) 2020-06-25
PL3631023T3 (pl) 2021-07-05
CN110741100A (zh) 2020-01-31

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