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Welding System Monitors Gas Shield

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Gary Boas

Although laser welding is widely used in manufacturing, it has not yet found a home in the aerospace industry. The technique would be an attractive tool in this sector if its reliability could be improved, but aerospace alloys present problems that make in-line process monitoring and control difficult. These materials are highly reactive when hot and quickly oxidize and absorb gases from the air if unprotected during fusion welding. Laser welding has not become common in the aerospace sector because of the reactivity of the materials involved. A new system monitors the spectra of the...Read full article

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