OK
The Universal Selection Source:
Plastics & Elastomers
Article

Ultrasonic Welding - Which Frequency

SpecialChem / Mar 7, 2008

A little research reveals that ultrasonic plastic welding machines can be purchased in a variety of frequencies, including 15, 20, 27, 30, 35, 40, 50, 60, or 70 KHz. As if this doesn't create enough confusion, even more frequencies most likely are available. A medical device manufacturer purchased a 20 KHz ultrasonic welding machine (just like the other ten machines it owned) and shipped it to a supplier with instructions to have tooling built in order to weld a certain small electrical assembly. The tooling was built to fit the machine and the assembly in question, and production was scheduled to commence. When the machine was finally adjusted to produce acceptable parts, a reduction booster of 0.4 gain was installed, the weld time was less than 70 milliseconds, the clamp force was approximately 150 Newtons (requiring air pressure in the cylinder of less than 0.5 bar), and the force trigger setting was set at its lowest possible setting. It was like hunting rabbits with an elephant gun.

Be the first to comment on "Ultrasonic Welding - Which Frequency"

Leave a comment





Your email address and name will not be published submitting a comment or rating implies your acceptance to SpecialChem Terms & Conditions
The 6th Annual Chemicals Sales & Marketing Toolbox
Back to Top