SYSTEM AND METHOD FOR ADDITIVE MANUFACTURING

摘要

A method for forming a component includes providing a first layer of a mixture of first and second powders. The method includes determining the frequency of an alternating magnetic field to induce eddy currents sufficient to bulk heat only one of the first and second powders. The alternating magnetic field is applied at the determined frequency to a portion of the first layer of the mixture using a flux concentrator. Exposure to the magnetic field changes the phase of at least a portion of the first powder to liquid. A change in power transferred to the powder during a phase change in the powder is calculated to determine the quality of component formation.

主权项

1. A method of induction heating powder:
providing a first layer of the powder, the powder being formed of a material having a resistivity; determining a first frequency of an alternating magnetic field to induce an eddy current sufficient to melt only a first portion of a surface of the powder; applying a first alternating magnetic field at the first frequency to a portion of the powder at a power level sufficient to melt a portion of the powder; calculating a change in reflected power of the applied first alternating magnetic field; and comparing the calculated change in reflected power to a predetermined value to determine a process characteristic.