Process for manufacturing a Yankee cylinder

摘要

The invention relates to a process for manufacturing a steel Yankee cylinder (1), where the Yankee cylinder (1) is welded together from individual pre- or finish-machined cylinder sections (8, 9, 10). In this case, the individual cylinder sections (8, 9, 10) are not welded together at the manufacturing location of the cylinder sections (8, 9, 10), but at an assembly location away from the manufacturing location, preferably on the works premises of the customer.

主权项

1. A process for manufacturing a steel Yankee cylinder, comprising the following steps:
a.) cutting and curling individual shell plates at a specific manufacturing location; b.) welding the shell plates together to form at least two cylinder sections, each with an inside, an outside, and axially spaced end faces, at the manufacturing location; c.) transporting the individual cylinder sections from the manufacturing location to an assembly location; d.) welding the individual cylinder sections together at adjacent end faces at the assembly location to form a complete cylindrical shell surface of the Yankee cylinder, wherein a length of the complete cylindrical shell surface is at least 5 meters and the assembly location is a paper or tissue production plant; e) attaching at least one end cover to at least one of the individual cylinder sections after one of steps b.), c.) or d.); and f) wherein step d.) is performed, at least from one side, by a narrow gap welding process using a mobile welding robot or an electro-mechanical welding carriage placed inside the individual cylinder sections.