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US 2014/0197139 A1Published application
Production of fine grains in deposition welding
AssigneeSiemens Aktiengesellschaft
InventorsBernd BURBAUM, Torsten JOKISCH
Life of this patent
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Abstract
By tilting a welding nozzle back and forth for depositing each successively applied weld layer, a very fine-grained structure is achieved in the multilayered buildup of material producing a directionally solidified structure.
Claims9
A method for deposition welding of a substrate, which has a directionally solidified structure, the method comprising,
- holding a welding nozzle at a selected angle (α1, α2) relative to a perpendicular to a surface of the substrate wherein the selected angle differs significantly from 0° and
- producing a first weld layer at a first tilt angle (α1) in relation to the perpendicular to the surface that is different from 0° and
- then producing a second weld layer at a second tilt angle (α2) in relation to the perpendicular to the surface that is significantly different from 0° and significantly different from the first angle (α1).
Dependencies are inferred from the claim text.