Home » Ultrasonic Ultrasonic Written by Bryan Joslin on November 2, 2023 A welding technique that uses high-frequency vibrations to join metal parts without heat. Related Articles: How to Use an Ultrasonic Parts Cleaner for Restoration PerfectionBest Practices for Using an Ultrasonic CleanerProject Sunny – Episode 10: Body Rotisserie & Engine TeardownChoosing the Best Ultrasonic Cleaner for Your Project