EP3631023A1 - Verfahren zur oberflächenbehandlung eines stahlyankees - Google Patents
Verfahren zur oberflächenbehandlung eines stahlyankeesInfo
- Publication number
- EP3631023A1 EP3631023A1 EP18722893.7A EP18722893A EP3631023A1 EP 3631023 A1 EP3631023 A1 EP 3631023A1 EP 18722893 A EP18722893 A EP 18722893A EP 3631023 A1 EP3631023 A1 EP 3631023A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yankee
- treating
- yankee cylinder
- 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.)
- Granted
Links
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, wherein the Yankee cylinder a cylinder jacket made of steel with a
- Yankee cylinders usually have a very large one
- Diameter They are heated from the inside with steam and are difficult to produce, since very high requirements in terms of internal pressures, tightness and large diameters must be met.
- Cylinder diameter 2000 mm to 6500 mm
- Hollow shaft diameter 1000 mm to 2500 mm
- Cylinder length 3000 mm to 8500 mm
- a scraper blade abuts the outer circumferential surface of the Yankee cylinder with which the dried fibrous web is scraped off the Yankee surface.
- Cylinder surface is not excluded that it comes to the material removal of the Yankee surface. In order to reduce this material removal, it is customary to Surface to be coated with a hard material layer.
- EP 2 474 665 A1 describes a Yankee cylinder which is coated with a corresponding layer of hard material.
- Yankee cylinders used to be made predominantly of cast iron from U.S. Pat.
- US Pat. No. 4,196,689 and WO 2008/105005 A1 also already disclose Yankee cylinders made of steel.
- Cast iron (hardness 240 HB), steel laminae are thermally coated with a wear protection.
- a wire is melted and sprayed onto the Yankee surface, the resulting thermally sprayed layer has a considerably higher hardness than steel.
- the sprayed layers have a layer thickness of approximately 0.75 mm.
- thermally sprayed layer lies in its relatively low thermal conductivity.
- the thermal conductivity of a thermally sprayed layer is only in the range of 3 - 7 W / mK. Opposite points the Yankee steel jacket has a thermal conductivity of up to 45 W / mK.
- the aim of the invention is to provide a method for the
- Cylinder jacket heat treated with a laser beam and hardened
- the entire outer surface of the Yankee cylinder jacket is traversed by a laser beam, heated and thus cured.
- An inventively cured Stahlyankee thereby has a 7% higher heat transfer and allows a
- the thickness of the hardened surface layer is the thickness of the hardened surface layer.
- P355NH (DIN EN 10028-3) is well suited as a 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 safety.
- Laser beam hardening can achieve hardnesses of up to 400 HB when curing by conventional means. With this new procedure, a max. Hardness of 320HB aimed at with excellent thermal conductivity in the
- the hardness of cast cylinders is in the range of 230-280 HB. It is advantageous if the surface of the Yankee cylinder is briefly heated by the laser beam to a temperature between 800 ° C and 900 ° C.
- Heat treatment is preferably a high-power diode laser or C0 2 laser used, thus heating rates of> 1000 ° C / s can be realized.
- Cylinder surface detachment of the fibrous web at the end of the drying process, and influencing the properties of the tissue produced).
- a multiplicity of depressions uniformly distributed over the mantle surface can be burned into the surface by the laser beam, thereby producing a porous surface.
- the surface of the Yankee cylinder is polished after the heat treatment.
- a grinding of the surface is usually no longer necessary.
- the outer surface of the cylinder jacket is heat-treated simultaneously with a plurality of laser beams.
- the largely finished Yankee cylinder is preferably rotatably clamped horizontally with its stub axles. About one or more laser beams, the cladding surface is heat treated. The Yankee is slowly rotated, so that the laser beam the entire
- Scope sweeps over. By moving the laser in the axial direction (parallel to the Yankee axis), the entire cylinder jacket surface can be heat treated. By using multiple lasers, the
- Processing time can be shortened.
- the treatment can be done by high power diode lasers, which have a
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)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI201830217T SI3631023T1 (sl) | 2017-06-01 | 2018-03-22 | Postopek za površinsko obdelavo jeklenega yankeeja |
| PL18722893T PL3631023T3 (pl) | 2017-06-01 | 2018-03-22 | Sposób obróbki powierzchniowej stalowego cylindra Yankee |
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 (de) | 2017-06-01 | 2018-03-22 | Verfahren zur oberflächenbehandlung eines stahlyankees |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3631023A1 true EP3631023A1 (de) | 2020-04-08 |
| EP3631023B1 EP3631023B1 (de) | 2021-01-06 |
Family
ID=62116810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18722893.7A Active EP3631023B1 (de) | 2017-06-01 | 2018-03-22 | Verfahren zur oberflächenbehandlung eines stahlyankees |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US11414718B2 (de) |
| EP (1) | EP3631023B1 (de) |
| CN (1) | CN110741100B (de) |
| AT (1) | AT519996B1 (de) |
| BR (1) | BR112019022425B1 (de) |
| DK (1) | DK3631023T3 (de) |
| ES (1) | ES2863430T3 (de) |
| HU (1) | HUE054431T2 (de) |
| PL (1) | PL3631023T3 (de) |
| PT (1) | PT3631023T (de) |
| SI (1) | SI3631023T1 (de) |
| WO (1) | WO2018219516A1 (de) |
Families Citing this family (2)
| 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 |
| EP4232614B1 (de) | 2020-10-21 | 2025-05-07 | Valmet Aktiebolag | Yankee-trocknungszylinder und tissuepapierherstellungsmaschine |
Family Cites Families (18)
| 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 |
| BRPI0721415B1 (pt) | 2007-03-01 | 2020-11-10 | Toscotec S.P.A. | cilindro yankee feito de aço, que inclui uma carcaça cilíndrica unida a duas extremidades |
| 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 (de) * | 2012-02-15 | 2013-08-21 | Longevity Engineering SA | Lokal begrenzte Härtung von metallischen Oberflächen |
| 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 |
| PL3556936T3 (pl) * | 2018-04-17 | 2020-08-10 | Valmet Aktiebolag | Sposób wytwarzania stalowego cylindra suszącego typu yankee |
-
2017
- 2017-06-01 AT ATA50458/2017A patent/AT519996B1/de active
-
2018
- 2018-03-22 US US16/616,661 patent/US11414718B2/en active Active
- 2018-03-22 HU HUE18722893A patent/HUE054431T2/hu unknown
- 2018-03-22 BR BR112019022425-4A patent/BR112019022425B1/pt active IP Right Grant
- 2018-03-22 EP EP18722893.7A patent/EP3631023B1/de active Active
- 2018-03-22 PL PL18722893T patent/PL3631023T3/pl unknown
- 2018-03-22 PT PT187228937T patent/PT3631023T/pt unknown
- 2018-03-22 DK DK18722893.7T patent/DK3631023T3/da active
- 2018-03-22 ES ES18722893T patent/ES2863430T3/es active Active
- 2018-03-22 CN CN201880036647.6A patent/CN110741100B/zh active Active
- 2018-03-22 WO PCT/EP2018/057261 patent/WO2018219516A1/de not_active Ceased
- 2018-03-22 SI SI201830217T patent/SI3631023T1/sl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US11414718B2 (en) | 2022-08-16 |
| EP3631023B1 (de) | 2021-01-06 |
| PL3631023T3 (pl) | 2021-07-05 |
| BR112019022425A2 (pt) | 2020-05-19 |
| AT519996A2 (de) | 2018-12-15 |
| SI3631023T1 (sl) | 2021-04-30 |
| CN110741100B (zh) | 2022-03-25 |
| CN110741100A (zh) | 2020-01-31 |
| ES2863430T3 (es) | 2021-10-11 |
| HUE054431T2 (hu) | 2021-09-28 |
| AT519996B1 (de) | 2020-03-15 |
| BR112019022425B1 (pt) | 2023-02-14 |
| DK3631023T3 (da) | 2021-04-12 |
| US20200199697A1 (en) | 2020-06-25 |
| WO2018219516A1 (de) | 2018-12-06 |
| PT3631023T (pt) | 2021-03-15 |
| AT519996A3 (de) | 2020-03-15 |
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