METHOD FOR THE WELDING PRODUCTION OF A LARGE-DIMENSIONED PART FROM DUCTILE IRON BY USING LASER-DEPOSITION-WELDED BUFFER MATERIALS AND ELECTRIC WELDING

摘要

The invention relates to a method for producing a part from ductile iron, comprising the following steps: designing the part (1) in such a way that the part (1) is composed of a plurality of part components (2, 3); producing the part components (2, 3) from ductile iron; providing the part components (2, 3) in pairs; depositing buffer material onto the rim edge (6) of the first part component (2) and onto the rim edge (7) of the second part component (3) by means of deposition welding; laying the second part component (3) with the rim section (5) thereof on the rim section (4) of the first part component (2) so that the rim edges (6, 7) lie against each other with the buffer materials thereof; welding the rim sections (4, 5); wherein the buffer material is selected in such a way that a structure change in the ductile iron material of the part components (2, 3) is prevented when the rim sections (4, 5) are welded.