Process and device for laser working with remote control
First Claim
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1. Process for laser welding in which a laser beam (2) is carried to the vicinity of a working point (10) on which it is focused, said process comprising the steps of(a) drawing light emitted by said working point during the welding separately from the laser beam reflected by said working point;
- and(b) analyzing during welding a spectrum of drawn light by comparing said spectrum with a standard spectrum corresponding to a satisfactory weld.
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Abstract
A laser beam (2) is carried to the vicinity of a working point (10), on which it is focused, and spectral analysis of the light emitted at the working point during the laser working is carried out. Application to laser welding in small diameter tubes.
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Citations
7 Claims
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1. Process for laser welding in which a laser beam (2) is carried to the vicinity of a working point (10) on which it is focused, said process comprising the steps of
(a) drawing light emitted by said working point during the welding separately from the laser beam reflected by said working point; - and
(b) analyzing during welding a spectrum of drawn light by comparing said spectrum with a standard spectrum corresponding to a satisfactory weld. - View Dependent Claims (2, 3)
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- 4. Device for laser welding, of the type comprising a laser (1), means (7) for conducting a laser beam and mean (8, 9) for focusing said laser beam on a working point (10), said device further comprising a dichroic mirror (5) interposed in a path of said laser beam, said mirror being transparent to said laser beam and reflecting for other wavelengths, and a spectrometer (4) receiving light reflected by said mirror.
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Current AssigneeFramatome
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Original AssigneeFramatome
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InventorsBoudot, Cecile
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Primary Examiner(s)Albritton, C. L.
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Application NumberUS07/774,357Time in Patent Office747 DaysField of Search219/121.83, 219/121.84, 219/121.63, 219/121.64, 219/121.68, 219/121.69US Class Current219/121.83CPC Class CodesB23K 26/032 using optical meansB23K 26/0643 comprising mirrorsY02E 30/00 Energy generation of nuclea...
