Measuring weld seam gaps using laser scanners

The AccuProfile 820 laser scanners are used to inspect weld and braze joints. The scanner is mounted near the welding torch so that if a flaw is detected, operators can take immediate corrective action. 3D profile data is created by mating the 2D profile data with an encloder position. This encoder position is tracked directly by the scanner and included in the data stream.

The welded seam is checked for dimensional tolerances like width, seam shape and volume and seam specific errors, like undercuts and porosity.

Through a third-part vendor, Acuity supplies specialized software for weld bead inspection. The software compares the 3D profile data with the predetermined tolerance field levels and stores the results. The system can be configured with an alarm signal upon detection of a bad weld.