1987 Fiscal Year Final Research Report Summary
Studies on Ulltrasonic Butt Welding
| 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 Kanagawa University, Professor, 工学部電気工学科, 教授 (20078299)
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| Co-Investigator(Kenkyū-buntansha) |
YAZAWA Kimihiko Ultrasonic Engineering, Co., Ltd, Head of Electronics Division., 取締役電子技術部, 部長
OHYA Kanji NTK Ceramic Division, NGK Spark Plug Co., Ltd.%head of Researching Division, 研究部, 部長
HIRAYAMA Hiromitsu TDK Co., Ltd. Chief of Researhing Section, 部品事業部技術部・開発企画課, 課長
UEOKA Tetsugi Kanagawa University, Coadjutor, 工学部電気工学科, 技術員
ENDOH Nobuyuki Kanagawa University, Associate Professor, 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 / High Power Application of Ultrasonics / Ultrasonic Welding / Ultrasonic Butt Welding / Welding of Aluminum / Welding of Light Metals / Welding of Different Metals / アルミニウムー銅材の接合 / 耐食アルミニウムの接合 |
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| Research Abstract |
Ultralsonic butt welding by 27 KHz or 19 KHz vibration frequency systema was studied. Welding specimens used were aluminum, anticorrosive aluminum and copper plates of 6 mm thickness. These welding specimens are successfully joined end to end by these 27 KHz and 19 KHz ultrasonic butt welding equipments< The ultrasonic vibration source used consisted of a radial to longitudinal vibra- tion direction converter with 6 ( 27 KHz ) or 8 ( 19 KHz ) bolt-clamped Langevin type PZT transducers of i7 KHz or 19 KHz vibration frequency. Welding specimens used were cut by a bandsaw and some specimens were finished by a milling machine, and only degreased and cleaned by chlorothene and without further finishing. The weld strength of aluminum specimens obtained is about 100 MPa which was nearly equal to specimen strength, and the strength of anticorrosive aluminum and copper specimens obtained was about 250 MPa which is about anticorrosive aluminum specimen strength. Required power for joining (1) aluminum specimens, (2) aluminum to copper specimens, (3) anticorrosive aluminum specimens, and (4) anticorrosive aluminum to copper specimens of 6 mm thickness were 1 --3 KW/cm^2, 2 -- 4 KW/cm^2, 6 -- 8 KW/cm^2, and 7 -- 9 KW/cm^2.
The weldment sections of specimens were tested by a microvickers hardness tester. A slight decrease of hardness adjacent to a welding surface was noted, but no decrease was noted by a 19 KHz welding with adequate welding condition.
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