SYSTEM AND METHOD OF CONTROLLING ATTACHMENT AND RELEASE OF ADDITIVE MANUFACTURING BUILDS USING A WELDING PROCESS

摘要

A system and method is provided related to additive manufacturing, where a welding system is used to build a work piece on a substrate where the work piece has discrete attachment points to the substrate to allow residual stresses in the finished work piece to aid in the removal of the work piece from the substrate. The work piece has one or more discrete attachment points which penetrate into the substrate to secure the work piece during manufacture, but which allow the residual stress in the completed work piece to aid in the removal of the work piece from the substrate.

主权项

1. An additive manufacturing system, comprising:
a power supply which generates a current output signal to generate an arc used to deposit a consumable onto a surface of substrate to create a workpiece made from said consumable; and a controller coupled to said power supply which controls said power supply such that said current output signal has at least a first portion and a second portion, where said first portion causes said arc to penetrate said surface so as to create at least one bond point between said workpiece and said substrate, and where said second portion causes said consumable to be deposited onto said surface of said substrate without causing said arc to penetrate said surface, wherein said controller further controls said power supply and a deposition of said consumable such that residual stresses are created within said workpiece during deposition of said consumable and said residual stresses are oriented in a predetermined orientation to impart a force on said at least one bond point.