Andritz Ag

Yassar Ghanimi

Michael Jesse

A method for treating a Yankee cylinder, where the Yankee cylinder has a cylinder shell made of steel with a ferritic-pearlitic structure. In the disclosed method, the outer surface of the cylinder shell is heat-treated with a laser beam and hardened as a result.

Method for the surface treatment of a steel Yankee

A screw press for separating off liquid from an article, comprising a screw shaft together with a conveying helix, which is arranged helically on the screw shaft, and a housing enclosure, which surrounds the conveying helix, wherein a transporting passage for the article which is to be conveyed is formed between the screw shaft, the conveying helix and the housing enclosure, wherein a composite comprising hard-material particles which are embedded in a matrix component to form surface roughness is fastened with material bonding to at least one surface portion of the screw shaft, within the transporting passage. A use of a composite comprising hard-material particles which are embedded in a uniformly distributed manner in a matrix component to form surface roughness, for the purpose of providing fastening with material bonding to at least one surface portion of a screw shaft.

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Hausmannstätten, Austria

Yassar Ghanimi