DEVICE AND METHOD FOR MANUFACTURING HIGH MELTING POINT METAL POWDER

• Main Authors: LEE JU HO, PARK EUN SOO, ROH GOO WON
• Format: Patent
• Language: English; Korean
• Published: 29.12.2021
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; CASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; WORKING METALLIC POWDER

According to an embodiment of the present invention, a device for manufacturing high-melting-point metal powder comprises: a chamber; first and second induction coils disposed within the chamber, and having spirally wound windings; a metal rod at least partially inserted into the first and second induction coils and formed of a high-melting-point metal or an alloy of a high-melting-point metal; a guide unit having an opening through which a melt of the metal rod passes, to guide the melt; a gas spray unit provided in the guide unit to spray gas toward the melt that has passed through the opening; and a gas backflow prevention plate installed inside the chamber to separate the chamber into a first chamber in which the first and second induction coils are disposed and a second chamber in which the guide unit is disposed, and having an opening through which the melt passes. The metal rod is preheated by the first induction coil and melted by the second induction coil. The pressure of the first chamber is formed to be greater than that of the second chamber. Therefore, the device can easily produce powder even from high-melting-point metals or metals with high reactivity. 본 발명의 일 실시 예에 따르면, 챔버;와, 상기 챔버 내에 배치되며, 나선형으로 감기는 권선을 갖는 제1 및 제2 유도 코일;과, 적어도 부분적으로 상기 제1 및 제2 유도 코일 내로 삽입되며, 고융점 금속 또는 고융점 금속의 합금으로 이루어지는 금속 로드;와, 상기 금속 로드의 용융된 용융물이 통과하는 개구부가 형성되어 상기 용융물을 가이드하는 가이드부;와, 상기 가이드부에 구비되어 상기 개구부를 통과한 용융물을 향해 가스를 분사하는 가스 분사부; 및 상기 챔버 내부에 설치되어 상기 제1 및 제2 유도 코일이 배치되는 제1 챔버와 상기 가이드부가 배치되는 제2 챔버로 분리하며, 상기 용융물이 통과하는 개구부가 형성된 가스 역류방지판;을 포함하며, 상기 금속 로드는 상기 제1 유도 코일에 의해 예열되고, 상기 제2 유도 코일에 의해 용융되며, 상기 제1 챔버의 압력은 상기 제2 챔버의 압력보다 크게 형성되는 것을 특징으로 하는, 고용점 금속 분말 제조장치를 제공한다.