US 10,590,602 B2Granted

Method for assembling an improved Yankee cylinder

AssigneeA. Celli Paper S.P.A.

InventorSalvatore Sorrentino

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Abstract

A method for producing a Yankee dryer cylinder, or Yankee cylinder, comprises the steps of disposing of a first and of at least a second cylindrical portion of shell. These are made of steel, have the same diameter and are provided with a plurality of grooves at an internal surface. In particular, the portions of shell, at a respective end, are provided of respective flange portions. The method provides to coaxially position the portions of shell up to arrange respective coupling surfaces of the flange portions adjacent one to the other. Then the engagement of the portions of shell is provided by means of a plurality of clamping members, each of which arranged to clamp the adjacent flange portions. Then, it is provided the circumferential welding of the cylindrical portion of the shell that are opposite to the flange portions, and the removal of the clamping members and of the flange portions.

Claims11

Dependent claims

Method for producing a Yankee dryer cylinder, or Yankee cylinder, comprising the steps of:

disposing of a first and at least a second cylindrical portion of shell of said Yankee dryer cylinder, said first and second cylindrical portion of shell being made of steel and having a same diameter, said first and second cylindrical portion of shell having a respective internal surface provided with a plurality of circumferential grooves and of a respective flange portion at a respective end;
coaxially positioning said first and second cylindrical portion of shell up to arrange respective coupling surfaces of said flange portions adjacent one to the other;
engaging said first and second cylindrical portion of shell by means of a plurality of clamping members, each clamping member of said plurality being arranged to clamp said adjacent flange portions;
circumferential welding of said engaged first and second cylindrical portion of shell at the opposite side of said flange portions;
removing said plurality of clamping members;
removing the flange portions.

3 more elements

Dependencies are inferred from the claim text.