METAL MOLDED ARTICLE PRODUCTION METHOD

To provide a metal molded article production method capable of reducing a production time by a simple method without requiring the large scale modification of a production apparatus.SOLUTION: A metal molded article production method has a step in which, in the presence of a shield gas to be fed to t...

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Bibliographische Detailangaben
Hauptverfasser: AMANO HIROKI, SATO TOYOYUKI, YAMAGUCHI SUKENORI, SASAKI TOMOAKI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a metal molded article production method capable of reducing a production time by a simple method without requiring the large scale modification of a production apparatus.SOLUTION: A metal molded article production method has a step in which, in the presence of a shield gas to be fed to the circumference of a metal powder on a base plate, heat is fed to the metal powder using an energy line, and metal layers are molded on the base plate to successively laminate the metal layers. When a first metal layer in contact with the base plate is molded, the mass per unit volume at a temperature of 25°C under a pressure of 0.1 MPa of the shield gas is controlled to 1.00×10-4 g/cm3 to 1.3×10-3 g/cm3.SELECTED DRAWING: None 【課題】製造装置の大掛かりな改造を必要とせずに、簡便な方法で製造時間を短縮できる金属造形物の製造方法を提供する。【解決手段】ベースプレート上の金属粉体の周囲に供給されるシールドガスの存在下で、エネルギー線を用いて前記金属粉体に熱を供給し、前記ベースプレート上で金属層を造形して、前記金属層を順次積層する金属造形物の製造方法であって、前記ベースプレートと接する第1の金属層を造形する際に、シールドガスの温度25℃、圧力0.1MPaにおける単位体積あたりの質量を、1.00×10-4g/cm3~1.3×10-3g/cm3とする、金属造形物の製造方法。【選択図】なし