TH66525B - A kit for inspecting the weld area and a method for inspecting it. - Google Patents

Abstract

The welding laser beam (L1) is projected at the welding center (C11, C12) specified in the workpiece (W1, W2), otherwise the inspection laser beam (L5) is projected accordingly. The scanning center point (C51, C52) is defined in the melt pool (Y1) of the workpiece (W1, W2), where it is melted by projecting a welding laser beam (L1) with the beam being sent. Back (L2) consisting of reflected light from the molten material basin (Y1) of the workpiece, aerosol light caused by the Melting and evaporation of the workpiece and the radiant light emitted by the The molten material basin (Y1) of the workpiece and the welding condition of the weld area of the workpiece are Checked based on changes in the incoming beam intensity (L2) received. In such a way

Claims (8)

Disclaimer (all) which will not appear on the advertisement page: Revised 21/8/2017 1. A set of equipment for inspecting the weld area that checks the welding condition of the exposed area. Welds that are established during the time when more than one workpiece is being welded. Where the set for Check the area to be welded, including The radiated part that projects a laser beam for welding along the welding center point. Specified in the workpiece to weld the workpiece or project a laser beam for inspection at the center. Of a predetermined sweep in the molten basin of the specimen which was melted by Laser beam for welding A laser sensing detector that picks up the returned beam consisting of: At least one is the reflected light of the laser beam for welding or the laser beam for A probe that is projected by the lighted part, where the reflected light is reflected from Pool of melt material, aerosols caused by melting and evaporation. Of the workpiece and the radiant light emitted from the melt pool of the workpiece and the measuring device that monitors the change in the intensity of the received beam of light that is received. By the sensing of the laser beam during the time when the welding laser beam is projected along the center. Of the welding or during the time when the laser beam for the inspection is projected along the center of the Sweep to check the welding condition of the welded part of the workpiece, where the laser beam projected a few times of the laser beam. At the same welding center point or beam a few inspection laser beams At the same center of sweeping and The measuring device checks the welding condition of the welded area of the workpiece by Adhere to conditions that occur from time to time. Of change in beam intensity returned in The period when a welding laser beam is projected along the same welding center or in The time when the inspection laser beam is projected along the same sweeping center -------------------------------------------------- -------------------------------------------------- ---- (old) 1. A set of machines for checking the weld area, which checks the welding condition of the exposed area. Welds that are established during the time when more than one workpiece is being welded. Where the set for Check the area to be welded, including The radiated part that projects a laser beam for welding along the welding center point. Defined in the workpiece to weld the workpiece or project a laser beam for inspection at the center of the A scheduled sweep was made in the molten basin of the specimen that was melted by Laser beam for welding The receiving part that receives the returned beam, which contains at least the following: Either is the reflected light of the welding laser beam or a cheap inspection laser beam. Projected by the radiated part where the reflected light is reflected from the molten basin. Melting of the workpiece, the misty light caused by melting and evaporation of the workpiece and light. With radiant heat emitted from the molten pool of the workpiece and Inspection part that checks the welding condition of the welded area of the workpiece by Adheres to changes in the intensity of the returned beam received by the exposed portion in The period when a welding laser beam is projected along the welding center or during The inspection laser beam is projected along the center of the sweep. 2. A set of devices for inspection of the welded area according to claim 1, where the beamed part will be projected a few times the welding laser beam at the center point. Consolidation of the same welding or beam a few inspection laser beams along the central point. Of the same sweeping and The inspected section checks the welding condition of the welded area of the Workpiece, based on conditions that occur periodically Of the change in beam intensity being Returned at the time when the welding laser beam is projected along the same welding center point. Or during times when the inspection laser beam is projected along the same center of the sweep. 3. A set of devices for inspection of the weld area according to claim 2, where the period of time of scanning of the welding laser beam during the time when the laser beam For welds being projected along the same welding center point or the sweeping period of The probe laser beam during the period when the inspection laser beam is projected along the zero point. The sum of the same sweeps is the same as the specific period of the change in intensity. Of the returned beam obtained when the welding condition of the welded area is normal. 4. A set of machines for checking the weld area according to any claim of claim 1 to 3, where the said inspected part checks the welding condition of the welded area of The workpiece by performing a Fouriah transform or derivative of the returned beam intensity. 5. Method for checking the weld area To check the welding condition of the weld area. Which is prepared during the time when more than one workpiece is being welded by the area inspection method That was welded together with Projection of the laser beam for welding along the specified welding center in the workpiece To allow welding workpieces or laser beam projection for inspection along the center of the sweep at Is fixed in the melt pool of the workpiece, which is melted by the welding laser beam. A beam returned that contains one or more of the following: Reflection of the welding laser or inspection laser beam reflected from the Pool of molten material, aerosol light caused by melting and evaporation. The workpiece and the radiant light emitted from the melt pool of the workpiece and Inspection of the welding condition of the welded area of the workpiece according to the It changes the intensity of the returned beam received over time when the laser beam for The weld is projected along the center of the welding arc or at intervals when the laser beam for inspection Was projected along the center of the sweep 6. Inspection method of the welded area according to claim 5, where in the beam of the welding laser or the inspection laser beam, the welding laser beam is projected a few times at the same welding center. Or laser beam The inspections were projected a few times at the same center of the sweep and In checking the condition of being welded The welding condition of the welded area of the workpiece is Checks based on conditions that occur from time to time. Of the change in beam intensity being Returned at the time when the welding laser beam is projected along the same welding center point. Or during times when the inspection laser beam is projected along the same center of the sweep. 7. Inspection method of the weld area according to claim 6, where, in the beam of the welding laser or the inspection laser beam, the welding laser beam is projected along the same welding center point or beam. The inspection laser is projected along the same sweeping center for a specific period of time. Change in the intensity of the returned beam obtained when the welding condition of the welded area Of the workpiece is normal 8. Method for inspecting the area being welded according to any of Claims 5 to 7, where in checking the condition of being welded The welding condition of the welded area of the workpiece is returned. Checked by performing Fourier transform or derivative action on the intensity of the returned beam