Qoovia
 
Expert in ultrasonic technology and in the field of magnetism
Laser Welding Process Monitoring
WHY USE 4D WeldWatcher?

~ The laser power is adjusted and monitored by the laser controller.

~ The control of laser power is not influenced regardless whether the laser beam is coupled into the work     piece or whether the cover glass is contaminated or defect.

~ Changes of optical parameters (e.g. focal position, incidence angle of the radiation) and components (e.g.     contaminated cover glass) as well as process disruptions may lead to deviations.

~ The WeldWatcher evaluates the energy entered into the material.
MEASURING PRINCIPLE

~ During the welding process the melting and evaporation of the metal create a characteristic 
    process radiation.

~ The process radiation conducted back through the optical fiber is decoupled, optically filtered and 
    transformed into an electrical signal by means of a sensor.

~ This signal level is proportional to the radiation capacity of the process radiation.

~ Transmitted to the WeldWatcher the software automatically evaluates the signal.

~ The quality of the current signal is evaluated on the basis of previously generated reference values by 
    means of the enveloping curve technique.

~ The result of evaluation is displayed on the screen and transmitted to the PLC by a standardized bus 
    system.