Toscotec S.p.a.

Scuola Superiore Di Studi Universitari E Di Perfezionamento S. Anna

Francesco Simoncini

Giovan Battista Mennucci

Paolo Raffaelli

Luca Ghelli

Stefano Marenco

Antonio Frisoli

Giulia Masia

Simone Pieruccini

Fabio Salsedo

Massimo Bergamasco

Jacopo Bibbiani

Alessandro Piccinocchi

Leonardo Micheli

Gaetano Passanisi

Stefano Baldi

Enrico Raffanti

Francesco Possenti

Marco Volpi

A Yankee drier including a cylindrical mantle to which two end heads are connected, on each of which a corresponding pin is arranged, wherein the cylindrical mantle has an external surface and an internal surface, and wherein the internal surface of the mantle in cooperation with the lateral heads delimits an internal chamber of the Yankee drier in which steam can be introduced. The internal surface of the mantle is at least partially provided with a surface protective coating, the surface protective coating protecting the internal surface of the mantle from corrosive and/or abrasive agents contained in the steam introduced into said chamber.

Yankee drier and method for manufacturing a Yankee drier

A method for manufacturing a steel Yankee drier including a cylindrical steel mantle with two end heads on each of which a corresponding pin 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 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.

Method for manufacturing a steel Yankee drier and a steel Yankee drier

Shoe press comprising a fixed support structure (), a flexible belt () rotating about said fixed support structure () which flexible belt () can be pushed against a bearing element () to define a pressure nip (N), a shoe () connected with the fixed support structure () and arranged with respect to the belt () so as to push the latter towards the bearing element () in correspondence of the nip (N) by effect of a pressure exerted on the same shoe () by corresponding loading means. The loading means are constituted by hydraulic cylinders each of which has a chamber () formed by a corresponding passing hole formed in the fixed support structure () and a rod () which on one side is free to slide inlaid hole and on the other side transmits pressure to the shoe ().

Shoe press

The steel-made Yankee cylinder includes a cylindrical shell () joined to two ends (), to which are fixed respective-support journals (). The cylindrical shell () is joined to the ends through a circumferential weld formed between opposing surfaces of each end and of the cylindrical shell.

Yankee cylinder for paper producing machine

The Yankee cylinder () for drying webs of cellulose material comprises a cylindrical shell () with a substantially cylindrical outer surface, whereto end heads () are fixed by welding; the shell and the heads define a hollow inside volume of the cylinder and the heads have respective support journals (). An insulation () of the end heads is further provided.

Thermally insulated Yankee cylinder

Growing community of inventors

Lucca, Italy

Francesco Simoncini