SONICS 101:

A Beginner's Guide to Ultrasonics From the Experts who Fix it.

Ultrasonic welding runs in thousands of plants, but very few of the people who depend on it every day have ever had it explained properly. The manuals assume you already know. The manufacturers want to sell you a machine. And the engineer who set it up left three years ago.

Sonics 101 fixes that. It's a weekly series that starts with the basics and builds one idea at a time: what ultrasonics is, how a welder actually works, what each part of the stack does, why frequency matters, how to read an error code, and how to tell a machine problem from a part problem. No formulas, no jargon you have to look up, no engineering degree required.

If you run, maintain, buy, or troubleshoot ultrasonic equipment, this series is for you.

WHO'S WRITING THIS

Rochester Industrial Services has been repairing ultrasonic welding equipment for more than 40 years, alongside industrial electronics, monitors, and chart recorders. We're an independent, ISO 9001:2015 certified repair facility in Rochester, New York, not tied to any manufacturer, which means we work on all of them: Branson, Dukane, Herrmann, Sonics & Materials, Telsonic, Crest, Mecasonic, Genesis, and the imported equipment that's showing up on more floors every year. Every frequency from 15 kHz to 40 kHz comes through our shop.

That's where this series comes from. When you've had thousands of power supplies, converters, boosters, and horns on the bench, you learn what actually fails, what people actually get wrong, and what would have saved them a service call. Sonics 101 is us writing that down.

WHAT THE SERIES COVERS

Part 1: What is ultrasonic welding and how does it actually work? Part 2: Industries that rely on ultrasonics: plastics, medical, food, textiles, nonwovens, and more Part 3: Anatomy of an ultrasonic welder: power supply, converter, booster, and horn Part 4: Resonant frequency: why 20 kHz vs 40 kHz matters Part 5: Amplitude, pressure, time, and energy: the weld settings that matter Part 6: Joint design basics: energy directors, shear joints, and why parts don't weld Part 7: Branson error codes explained Part 8: Dukane error codes explained Part 9: Why horns crack, and what to do about it Part 10: Converter and booster failures: symptoms, testing, repair vs. replace Part 11: Ultrasonic welder maintenance checklist Part 12: Buying a used ultrasonic welder: what to inspect before you pay

More parts will be added as the series grows. Each post links to the one before it, so you can start at Part 1 or jump straight to the topic you need.

CAN'T WAIT FOR THE TROUBLESHOOTING POSTS?

If a welder on your floor is down right now, you don't need to read twelve articles first. Call us at 1-888-349-4638, use the contact form, or ship it in. Emergency service is available 24/7.

Rochester Industrial Services, Inc. is an independent repair facility not affiliated with any of the manufacturers listed on this page.