Method and arrangement for building metallic objects by solid freeform fabrication
AssigneeNorsk Titanium AS
InventorFerdinand STEMPFER
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Abstract
This invention relates to a method and arrangement for manufacturing objects by solid freeform fabrication, especially titanium and titanium alloy objects, wherein the deposition rate is increased by supplying the metallic feed material in the form of a wire and employing two gas transferred arcs, one plasma transferred arc for heating the deposition area on the base material and one plasma transferred arc for heating and melting the feed wire.
Claims33
A system for building metallic objects by solid freeform fabrication, comprising:
- a first PTA torch electrically connected to a base material and a second PTA torch electrically connected to a feed wire;
- and
- a control system to control the first and second torches, and the feed wire to form an object by fusing successive deposits of a metallic material onto the base material.
A method for manufacturing a three-dimensional object of a metallic material by solid freeform fabrication, the method comprising:
- preheating a deposition area in a base material using a first plasma transferred arc;
- feeding a feed wire to a position above the preheated deposition area in the base material;
- and
- melting a distal end of the feed wire using a second plasma transferred arc such that molten metallic material is deposited onto the preheated deposition area in the base material.
Dependencies are inferred from the claim text.