POWDER MOLDING EQUIPMENT, RARE-EARTH SINTERED MAGNET MANUFACTURING METHOD USING SAID POWDER MOLDING EQUIPMENT

• Main Authors: HASHIMOTO TAKAHIRO, NAKAMURA RYUJI, KONO OSAMU, UMEBAYASHI MASAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 05.09.2016
• Subjects: ALLOYS; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; PRESSES; PRESSES IN GENERAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

SOLUTION: Material powder 5 is poured into a space 11 formed of a lower punch 2 and a die 1 so that said powder 5 is pressurized and compressed into a desired shape between an upper punch 3 and a lower punch 2. The upper punch 3 is moved upward to open the upper end face of the die 1, and the lower punch 2 is moved upward to push up a molding 51 and out of the die 1 thereby to compress and mold the powder 5. In this case, a coating material 24 is attached to the outer circumference of said lower punch 2, and this coating material 24 is impregnated with a lubricant, and this lubricant is applied together with the molding action to the inner circumference of the die 1.EFFECT: Without interrupting a molding operation, a molding of material powder can be continuously performed while applying a lubricant satisfactorily simultaneously with the molding operation, so that a compact or the like of a rare earth alloy can be extremely efficiently compressed and molded.SELECTED DRAWING: Figure 4 【解決手段】下パンチ２とダイス１とで形成される空間１１に材料粉末５を投入し、上パンチ３と下パンチ２の間で該粉末５を加圧圧縮して所望の形状に成形し、上パンチ３を上動させてダイス１上端面を開放し、下パンチ２を上動させて成形体５１を押し上げダイス１から取り出して粉末５を加圧圧縮成形する場合に、上記下パンチ２の外周面に塗布材２４を取り付け、この塗布材２４に潤滑剤を含浸させて成形動作とともに潤滑剤をダイ１の内周面に塗布する。【効果】成形作業を中断する必要なく成形動作と同時に潤滑剤を良好に塗布しながら材料粉末の成形を連続して行うことができ、極めて効率的に希土類合金の成形体などを加圧圧縮成形することができる。【選択図】図４