Inspection of a laser weld seam for pores and geometrical anomalies
The resolution required amounts to 4µm. The high gloss finished material and glossy laser weld seam may give rise to reflections, and the space for installation is restricted. A low form factor for the monitoring equipment is imperative.
The sensor QuellTech Q4-5 features a sufficient resolution and an extremely compact design (86x32x85 mm). Two laser scanners at distinct offset positions have been integrated, so only half the cycle time is required for an weld seam inspection. The high resolution of the sensor in the direction of travel is achieved by a sophisticated selection of optical components and a blue laser source of 20 µm width.
The rugged design of the Q4-5 sensor configuration withstands the conditions in the surroundings of the inspection zone, proves to be stable and is able to recognize and to screen the defective weld seam at once. Recorded measurement data deliver reliable statistics of the production quality, and hence have allowed an optimization of the entire production process.