Method for producing a yankee cylinder

Abstract

The method involves cutting and rolling of coated plates. The welding of shell plates to several cylinder sections (8,9) is performed. The mechanical preprocessing of individual cylinder sections on the inner and outer sides, and at the end faces is performed. The welding of individual cylinder sections to a finished cylindrical surface (2) of Yankee cylinder is performed.

Description

technical field [0001] The subject of the invention is a method of manufacturing a steel Yankee cylinder. Background technique [0002] So-called Yankee cylinders are commonly used for drying in the production of web or tissue paper. Here, the wet web is transferred from the machine hood to a rotating Yankee cylinder; it dries on the surface of the cylinder in a split second and is then removed from the cylinder with the help of a scraper. [0003] Yankee cylinders generally have a very large diameter. They are heated from the inside using steam and are difficult to manufacture because of very stringent requirements regarding the internal pressure the cylinder must handle, the leak-tightness of the cylinder and its large diameter. [0004] Standard Yankee cylinders have the following dimensions, for example: [0005] Cylinder diameter: 2000 mm to 6500 mm [0006] Hollow shaft diameter: 1000 mm to 2500 mm [0007] Cylinder length: 3000 mm to 8500 mm [0008] Cylinder ma...

AI Technical Summary

Problems solved by technology

[0015] With this traditional manufacturing technique, it is impossible to supply many potential customers with cylinders larger than 6.5 meters in diameter and 6 meters in width, because there is usually no way to transport such large and heavy components to customers, or because such Shipping will take too much effort and expense

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