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• W2896077617 abstract "Since the late 1960’s, the laser materials processing has began to atract many researchers in Japan as a promissing high technology in various fields and fundamental studies have been initiated first in universities and research institutions. In 1977 a large project named Flexible Manufacturing System Complex Provided with Laser started by the sponsorship of MITI (The Ministry of International Trade and Industry), which terminated in 1985 bringing successful results to achieve more stable and reliable high power lasers than those available in the market at that time. Since then the importance of laser materials processing was widely recognized in industrial side and intensive reserches and developments were conducted in many companies. Of course there were some pioneer companies which introduced lasers in production lines in earliest days in spite of that the laser being still prematured machines. Those are the semiconductor, automotive, electric, steel industries and so on.Today, the annual sales of industrial lasers are steadily increasing year by year in Japan counting up to 40 million yen in 1988, which reveals that the laser materials processing is now widely prevailed in Japanese industries. Presently the major laser processing in production lines is the presision or pattern cutting of metallic and nonmetallic thin sheets. Recent efforts of laser cutting are seen in increasing smoothness of cut surface and plate thickness up to 20 mm, and also in reducing teaching time before cutting. Laser welding is also slowly but steadily spreading, particularly in mass production of small parts in automotive and machine industries, and welding of thin plates in electric and steel industries. However, due to the prematureness of adaptive control in laser welding, the presice and rigid fixing ewuipments are generally required and thus the flexibility of laser processing is rather restricted. Laser surface modification which is thought to have bright future is still under development in various industries. Some examples of laser surface modification used in mass production are localized transformation hardening of piston, local hard facing of engine valve by laser powder cladding, magnetic axis control of silicated plate, and so on.In the paper will be also described the trends of researches in Japan on laser materials processing including some sinthesis of new materials, and some large projects of laser technology that is presently carried and planned in near future.Since the late 1960’s, the laser materials processing has began to atract many researchers in Japan as a promissing high technology in various fields and fundamental studies have been initiated first in universities and research institutions. In 1977 a large project named Flexible Manufacturing System Complex Provided with Laser started by the sponsorship of MITI (The Ministry of International Trade and Industry), which terminated in 1985 bringing successful results to achieve more stable and reliable high power lasers than those available in the market at that time. Since then the importance of laser materials processing was widely recognized in industrial side and intensive reserches and developments were conducted in many companies. Of course there were some pioneer companies which introduced lasers in production lines in earliest days in spite of that the laser being still prematured machines. Those are the semiconductor, automotive, electric, steel industries and so on.Today, the annual sales of indu..." @default.
• W2896077617 created "2018-10-26" @default.
• W2896077617 creator A5005858451 @default.
• W2896077617 date "1989-01-01" @default.
• W2896077617 modified "2023-09-25" @default.
• W2896077617 title "State-of-the-art of laser materials processing in Japan" @default.
• W2896077617 doi "https://doi.org/10.2351/1.5058313" @default.
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