Development of hybrid process with short-pulsed laser and electrochemical machining to create multi-scale structures on difficult-to-cut materials

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K14620
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 18020:Manufacturing and production engineering-related
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: Kodama Shuhei 東京農工大学, 工学(系)研究科(研究院), 特任助教 (10867237)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 短パルスレーザ / 電解加工 / 複合加工 / 難削材 / 微細構造 / 表面改質 / 複合表面

Outline of Final Research Achievements

The purpose of this study is to achieve the creation of composite surfaces via hybrid processing with short-pulsed laser and electrochemical machining. By flowing a low current in a copper sulfate aqueous solution and performing laser irradiation, the deposition of micro-line copper with a thickness that would be difficult to achieve through laser irradiation alone was achieved. On the other hand, by performing electrochemical machining while conducting laser irradiation in a sodium chloride aqueous solution, stable and efficient multi-scale processing of titanium, a difficult-to-cut material, was achieved. Therefore, a hybrid processing technology using short-pulsed laser and electrochemical machining that enables multi-scale removal and addition processes was developed by selecting appropriate electrolytes and electrodes, and controlling the energy density of laser irradiation and current value.

Free Research Field

精密加工学

Academic Significance and Societal Importance of the Research Achievements

現状のものづくりにおいて形状創成と機能創成を同時に実現する加工技術は確立されておらず、短パルスレーザによる光加工と電解加工による電気加工を複合し、発生する電磁場・熱を制御し、複合表面を創成する研究は前例がない。また、レーザ加工に対する溶液の影響や電解加工に対する電磁場や熱などの影響は明らかになっておらず、短パルスレーザ電解複合加工による電磁場や熱への影響を解明することはレーザ加工学および電解加工学の発展にもつながる。さらに複合表面を難削材を含めた金属に高能率で創成する技術はいまだ確立されておらず、新しい価値の創出につながる。