HFMI treatment – High Frequency Mechanical Impact treatment

Find out more about the HFMI/UIT process, our equipment and service:

The STRESSONIC® technology is an innovative, high-performance technology providing an alternative solution to the traditional impact treatment technique: ultrasonic impact treatment – UIT or high-frequency mechanical impact – HFMI.  This is a cold impact mechanical treatment projecting needles/impactors onto the weld toe of welded assemblies by means of ultrasonic wave frequency.

Hammer or weld impact treatment is a surface treatment for metal parts and welded assemblies that improves fatigue resistance, increases stress corrosion resistance and is used to correct welding distortion.

SONATS has developed a portable ultrasonic impact treatment (HFMI / UIT) equipment called the NOMAD. This device has been designed for operations in the production workshop but also on site thanks to its protected transport wheelcase facilitating access to the areas to be treated.

SONATS provides on-site services all around the world to execute ultrasonic weld impact treatment on metal parts and welded assemblies.