August 15, 2019 – AMADA MIYACHI AMERICA Inc. , a manufacturer of resistance welding, laser welding, marking, cutting, and micromachining equipment and systems, announced the MM-L300A Laser Weld Monitor. The MM-L300A is designed to detect production errors such as gaps between parts, missing parts, over-penetration, incorrect focus, and cover gas absence, providing operators feedback on laser weld quality. The unit supports laser welding technologies for spot or seam welds.
This monitor is designed for process development and quality control applications of laser welding. The MM-L300A determines weld success by detecting and recording a thermal signal from the area of laser interaction and provides an output waveform around which limits (max/min or envelope) can be set. Once the limits are set, the unit compares a new weld waveform in real time to identify good or bad weld. Providing temporal resolution—down to 1 microsecond—the MM-L300A with the SU-N300A dedicated thermal sensor enables monitoring of both CW and pulsed lasers.
The MM-L300A features software for simple sensor configuration, waveform envelope limit set-up, and real-time or saved waveform analysis on Windows PCs. Plus, with machine-selectable setup schedules, the unit can monitor different welding conditions. For process design flexibility, this approximately 7 lb (3 kg) system reduces set-up space when integrated into a production line, and the sensor mounts either on the optical axis of the laser or in an off-axis position.