Abstract: A method for joining hot slabs, which can be fed in succession to at least one roll stand. Joining sides of the hot slabs facing each other are, by pendular friction welding and/or vibration friction welding, simultaneously integrally bonded to a single metal intermediate piece arranged between the joining sides, by oscillatingly moving the intermediate piece at least largely parallel to the joining sides, while the joining sides are pressed against the intermediate piece and are held stationary; or simultaneously integrally bonded to at least one separate metal intermediate piece each, the intermediate pieces being arranged between the joining sides, by pressing the intermediate pieces arranged in series between the joining sides and oscillatingly moving the intermediate pieces at least largely parallel to the joining sides and oppositely to each other, while the joining sides are pressed against the intermediate pieces and held stationary.

Abstract: A method of producing a deforming tool (2) having a structured embossing surface (4) which can be brought into contact with a surface of a substrate (1) for plastic deformation of the substrate, includes the steps of determining a target structure to be produced on the substrate (1); geometrically distorting the target structure, such that an embossing image structure is obtained; inverting the embossing image structure, such that the embossing structure for the embossed surface (4) is obtained; and producing the embossing surface (4) of the deforming tool (2) according to the embossing structure.

Abstract: A method for operating a rolling technology or metallurgical system is disclosed. The rolling technology or metallurgical system comprises a device in which a rotating component is mounted with at least one sliding bearing. The sliding bearing is supplied with a lubricant. In order to enable improved operation of said bearings, in particular in rolling mills, a water-based, single-phase fluid to which at least one viscosity-increasing additive is added is used as the lubricant for the bearing.

Abstract: A method of producing a deforming tool (2) having a structured embossing surface (4) which can be brought into contact with a surface of a substrate (1) for plastic deformation thereof (of the substrate), the method comprising: determining a target structure to be produced on the substrate (1); geometrically distorting the target structure, such that an “embossing image structure” is obtained; inverting the “embossing image structure”, such that the embossing structure for the embossed surface (4) is obtained; and producing the embossing surface (4) of the deforming tool (2) according to the embossing structure.