LASER CLADDING USING FLEXIBLE CORD OF HARDFACING MATERIAL WITH DIAMOND

• Main Author: MARCHIONE, Thierry
• Format: Patent
• Language: English; French
• Published: 14.06.2018
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

A method of hardfacing a component (30) includes generating a laser beam (60) and directing the laser beam (60) to an area of a wear surface of the component (30). The method includes feeding a flexible cord (10) of a cladding material into the laser beam (60) to melt the flexible cord (10) and produce a bead (40) of the cladding material on the wear surface. The flexible cord (10) includes an inner metal wire (26) surrounded by an agglomerate of abrasion and wear-resistant material that contains diamond particles (20). The method further includes moving the laser beam (60) and the flexible cord (10) along the wear surface to produce a cladding layer over the wear surface of the component (30). L'invention concerne un procédé de rechargement dur d'un élément (30) comprenant la génération d'un faisceau laser (60) et l'orientation du faisceau laser (60) vers une zone d'une surface d'usure de l'élément (30). Le procédé comprend l'introduction d'un cordon flexible (10) d'un matériau de placage dans le faisceau laser (60) pour faire fondre le cordon flexible (10) et produire une bille (40) du matériau de placage sur la surface d'usure. Le cordon flexible (10) comprend un fil métallique interne (26) entouré par un agglomérat de matériau résistant à l'abrasion et à l'usure qui contient des particules de diamant (20). Le procédé comprend en outre le déplacement du faisceau laser (60) et du cordon flexible (10) le long de la surface d'usure pour produire une couche de placage sur la surface d'usure de l'élément (30).