METAL POWDER PRODUCING APPARATUS AND METAL POWDER PRODUCING METHOD

• Main Authors: HORINO KENJI, HOSONO MASAKAZU, MATSUMOTO HIROYUKI, YOSHITOME KAZUHIRO, KAJIURA YOSHIKI
• Format: Patent
• Language: English; Japanese
• Published: 26.03.2020
• Subjects: CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; WORKING METALLIC POWDER

To provide a metal powder producing apparatus that allows production of fine-quality metal powder and a metal powder producing method using the same.SOLUTION: The metal powder producing apparatus includes: a molten metal supply part 20 for discharging molten metal; a cylindrical body 32 provided below the molten metal supply part 20; and a cooling liquid lead-out part which forms, inside the cylindrical body 32, a flow of a cooling liquid for cooling the molten metal discharged from the molten metal supply part 20. The a cooling liquid lead-out part includes: an outer part 44; a passage part 42 through which the cooling liquid at the outer part 44 passes in a width smaller than the width of the outer part 44; and a cooling liquid discharge part 52 for discharging the cooling liquid that has passed through the passage part 42 into the inside of the cylindrical body 32. A flow-channel deflecting surface 62 is formed on a flow-channel inner peripheral surface 38b of a frame body 38 so that the cooling liquid discharged from the passage part 42 into an inner space part 46 flows toward an inner peripheral surface 33 of the cylindrical body 32 along the flow-channel inner peripheral surface 38b of the frame body 38, and is then reflected on the inner peripheral surface 33 of the cylindrical body 32, and flows in an inverted conical shape from the cooling liquid discharge part 52 of the inner space part 46 toward the center of the cylindrical body 32.SELECTED DRAWING: Figure 1A 【課題】高品質な金属粉末を製造することができる金属粉末製造装置と、それを用いる金属粉末の製造方法を提供すること。【解決手段】溶融金属を吐出する溶融金属供給部２０と、溶融金属供給部２０の下方に設置される筒体３２と、溶融金属供給部２０から吐出された溶融金属を冷却する冷却液の流れを、筒体３２の内面に形成する冷却液導出部と、を有する金属粉末製造装置である。冷却液導出部は、外側部４４と、外側部４４の冷却液を、外側部４４の幅よりも狭い幅で通過させる通路部４２と、通路部４２を通過した冷却液を、筒体３２の内部に吐出する冷却液吐出部５２と、を有する。通路部４２から内側空間部４６に吐出された冷却液が、枠体３８の流路内周面３８ｂに沿って筒体３２の内周面３３に向けて流れ、筒体３２の内周面３３で反射し、内側空間部４６の冷却液吐出部５２から筒体３２の中心部に向けて逆円錐状に流れるように、枠体３８の流路内周面３８ｂには流路偏向面６２が形成してある。【選択図】図１Ａ