Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Thermally joining and/or coating or thermally separating the workpieces having heat-sensitive coating, comprises restoring coating by thermally coating the coating material after thermally joining and/or coating or thermally separating

 
: Riedel, Frank; Winkelmann, Ralf; Puschmann, Markus

:
Frontpage ()

DE 102010005894 A: 20100127
German
Patent, Electronic Publication
Fraunhofer IWU ()

Abstract
The method for thermally joining and/or coating or thermally separating the workpieces (1), which have a heat-sensitive coating (2), comprises restoring the coating by thermally coating a coating material (3) after thermally joining and/or coating or thermally separating the workpieces. A part of the thermal energy introduced in the workpiece for joining and/or coating or separating or in the workpieces is used for thermally coating the coating material. Two workpieces are welded or soldered with one another with a connecting seam. A blind seam (6) is welded or soldered at the workpiece. The method for thermally joining and/or coating or thermally separating the workpieces (1), which have a heat-sensitive coating (2), comprises restoring the coating by thermally coating a coating material (3) after thermally joining and/or coating or thermally separating the workpieces. A part of the thermal energy introduced in the workpiece for joining and/or coating or separating or in the workpieces is used for thermally coating the coating material. Two workpieces are welded or soldered with one another with a connecting seam. A blind seam (6) is welded or soldered at the workpiece. The workpiece is thermally separated under the formation of a cutting edge by using a cutting torch, plasma cutter or laser. The coating material is directly thermally introduced on the workpiece or the workpieces after thermally joining and/or coating or separating in a time-delayed manner. A residual heat present in the workpiece or in the workpieces is used for the thermal coating of the coating material. The residual heat is supplemented by an external energy supply. An external energy is supplied by light arc (4), laser, resistance heating or heat radiation for thermally coating the coating material. The coating material is thermally introduced on the connecting seam, the blind seam or the cutting edge. The workpiece is a metallic component with a zinc-containing coating. A part of the zinc-containing coating damaged by thermally joining and/or coating or separating is restored by coating zinc-containing coating material.

: http://publica.fraunhofer.de/documents/N-297764.html