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1. WO2020194360 - METHOD FOR MANUFACTURING A STEEL YANKEE DRIER AND A STEEL YANKEE DRIER

Publication Number WO/2020/194360
Publication Date 01.10.2020
International Application No. PCT/IT2020/050071
International Filing Date 23.03.2020
Chapter 2 Demand Filed 22.09.2020
IPC
D21F 5/02 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
5Dryer section of machines for making continuous webs of paper
02Drying on cylinders
D21F 5/18 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
5Dryer section of machines for making continuous webs of paper
18Drying webs by hot air
CPC
D21F 5/021
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
5Dryer section of machines for making continuous webs of paper
02Drying on cylinders
021Construction of the cylinders
D21F 5/181
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
5Dryer section of machines for making continuous webs of paper
18Drying webs by hot air
181on Yankee cylinder
Applicants
  • TOSCOTEC S.P.A. [IT]/[IT]
Inventors
  • SIMONCINI, Francesco
  • MASIA, Giulia
  • PASSANISI, Gaetano
  • GHELLI, Luca
  • MICHELI, Leonardo
  • PICCINOCCHI, Alessandro
  • MARENCO, Stefano
  • BIBBIANI, Jacopo
Agents
  • MINCONE, Antimo
Priority Data
10201900000437126.03.2019IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR MANUFACTURING A STEEL YANKEE DRIER AND A STEEL YANKEE DRIER
(FR) PROCÉDÉ DE FABRICATION D'UN SÉCHOIR YANKEE EN ACIER ET SÉCHOIR YANKEE EN ACIER
Abstract
(EN)
Method for manufacturing a steel Yankee drier comprising a cylindrical steel mantle (15) with two end heads (13, 14) on each of which a corresponding pin (2, 6) is arranged, the cylindrical mantle having an external surface and an internal surface, and the internal surface of the mantle in cooperation with the end heads delimiting an internal chamber of the Yankee drier in which steam can be introduced. The surface protective coating is at least partially formed on the internal surface of the mantle by introducing a predetermined amount of a nickel bath (24) in a volume delimited in a radial direction by the internal surface of the mantle, followed by a permanence of the bath in said volume for a predetermined time. The surface protective coating protects the internal surface of the mantle from corrosive and /or abrasive agents contained in the steam introduced into said chamber.
(FR)
L'invention concerne un procédé de fabrication d'un séchoir Yankee en acier comprenant une enveloppe cylindrique en acier (15) avec deux têtes d'extrémité (13, 14) sur chacune desquelles est disposée une broche correspondante (2, 6), l'enveloppe cylindrique ayant une surface externe et une surface interne, et la surface interne de l'enveloppe en coopération avec les têtes d'extrémité délimitant une chambre interne du séchoir Yankee dans laquelle peut être introduite de la vapeur. Le revêtement de protection de surface est au moins partiellement formé sur la surface interne de l'enveloppe par introduction d'une quantité prédéterminée d'un bain de nickel (24) dans un volume délimité dans une direction radiale par la surface interne de l'enveloppe, suivi d'un passage du bain dans ledit volume pendant un temps prédéterminé. Le revêtement de protection de surface protège la surface interne de l'enveloppe contre des agents corrosifs et/ou abrasifs contenus dans la vapeur introduite dans ladite chambre.
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