EVALUATION METHOD, EVALUATION PROGRAM, AND PRODUCTION METHOD FOR POWDER FOR METAL ADDITIVE MANUFACTURING, INFORMATION PROCESSING DEVICE, AND METAL ADDITIVE MANUFACTURING DEVICE

摘要

The present invention makes it possible to evaluate whether a metal powder is a powder for metal additive manufacturing that does not cause smoke to be emitted even when a preheating temperature is lowered. This evaluation method for a powder for metal additive manufacturing includes: an impedance measurement step in which the impedance of a metal powder is measured while heating the metal powder; a capacitive component extraction step for extracting the capacitive component from the measured impedance; and an evaluation step in which when the capacitive component becomes zero before the metal powder reaches a predetermined temperature, the metal powder is evaluated to be a powder material for metal additive manufacturing that does not cause smoke to be emitted when irradiated with an electron beam even when the preheating temperature of the metal powder is lowered.