Fried. Krupp Gesellschaft MIT Beschrankter Haftung

Krupp Koppers Gmbh

Fried Krupp

Reinhard Muller

Klaus Kohnen

Norbert Ullrich

Norbert Lentz

Richard Nahrgang

Friedhelm Trosken

Method and apparatus for laser-beam welding of longitudinal seams in container bodies feature overlapping longitudinal ends of a metal sheet, the length of the transverse ends of which exceeds a predetermiined circumferential dimension for the container body, into such a position relative to one another that they form an acute angle and define an angular opening, and the edge of one longitudinal end is oriented toward the inner face of the other longitudinal end. At least one focused laser beam, which is capable of relative movement with respect to this angular opening and parallel to the longitudinal ends, is aimed into the angular opening and locally melts portions of the longitudinal ends. The locally-molten longitudinal end portions are pressed against one another before they drop below the welding temperature to form a welded longitudinal seam.

Method and apparatus for laser beam welding of longitudinal seams in

Process for arc fusion welding under atmospheric conditions of a base material which is a nitrogen alloyed steel, in which the bulk share of nitrogen in the steel is above its solubility limit under atmospheric conditions. The nitrogen released during the melting of the base material is confined to the melting bath formed during the welding.

Process for the arc welding of nitrogen alloyed steels

A pin for holding and/or cooling ceramic coating in hot reaction chambers is composed of a pin shaft and a pin cap which are connected with one another by a diffusion welding forming therebetween a homogeneous material connection possessing a high strength and high heat conductive properties.

Pin for holding and/or cooling of ceramic coatings in hot reaction

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Essen, Germany

Reinhard Muller