1986 Fiscal Year Final Research Report Summary
STUDIES ON ULTRASONIC VIBRATION PRESS OF POWDER USING MULTIPLE VIBRATION SYSTEMS AND COMPLEX MODE VIBRATIONS.
| Project/Area Number |
60850026
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
機械工作
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| Research Institution | Kanagawa University |
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Principal Investigator |
TSUJINO Jiromaru Professor, Faculty of Engineering, Kanagawa University, 工学部, 教授 (20078299)
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| Co-Investigator(Kenkyū-buntansha) |
谷沢 公彦 超音波工業(株), 取締役, 電子技術部長
大矢 寛二 日本特殊陶業(株), 研究部長
HIRAYAMA Hiromitsu Section Manager, Planning-Technical R.&D. Coil Component MFG. DIV. TDK Corporati, 部品事業部技術部, 開発企画課長
UEOKA Tetsugi Technitian, Faculty of Engineering, Kanagawa University, 工学部電気工学科, 教務技術員
ENDOH Nobuyuki Associate Professor, Faculty of Eng., Kanagawa Univ., 工学部電気工学科, 助教授 (20016801)
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| Project Period (FY) |
1985 – 1987
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| Keywords | Ultrasonics / Ultrasonic Vibration Press of Powder / Ultrasonic Vibration Press / High Power Ultrasonics / Powder Metallurgy / Vibration Press / 軽金属の接合 / アルミニウム-銅の接合 |
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| Research Abstract |
Ultrasonic vibration press of powder with an upper and lower longitudinal vibration punches and various vibration mode dies was studied. The upper and lower longitudinal vibration punches of (1) the same frequency -- 20 kHz, and (2) different frequencies -- 27 kHz and 20 kHz, were used. The compacting vibration dies used were (A) a longitudinal vibration die of 20 kHz which vibrates in parallel direction to compacting static force, punch vibration and compact side surface (B) a radial vibration die of 27 kHz which vibrates in perpendicular to compacting force, punch vibration and compact side surface (C) a complex vibration die of 27 kHz which vibrates in the radial and longitudinal complex modes. These dies have a 15 mm diameter compacting part at the center axial parts. These upper and lower vibration punches and dies were driven by independent power amplifiers. Static compacting pressure used was up to 250 MPa.
Using the ultrasonic vibration press equipment, the compact density and inner density uniformity were improved. In the case of a copper specimen powder of 350 mesh, the density of compact increased about 26% at 100 MPa static pressure and about 20 % at 200 MPa due to the vibration of the punches and dies.
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