A study done at Value Plastics, a molder of precision molded couplers for medical applications, shows that a servo welder produces hermetic welds with a standard deviation of 0.4% compared to 2.9% when using a pneumatic welder.
Those results were reported last month at ANTEC in Cincinnati, OH by three officials at Dukane Corp., which has been testing potential benefits of its recently developed servo-driven ultrasonic welder.
"These benefits include increased precision and repeatability, increased weld strength, the ability to precisely
The authors of the Dukane ANTEC paper are Miranda Marcus, applications engineer; Satish Anantharaman of the Technology Demonstration Center in Tamil Nadu, India; and Bob Aldaz, a senior project engineer.
Dukane developed the iQ series Servo-Driven Ultrasonic Welder with Melt-Match technology in response to a growing call, particularly in the medical market, for more controlled and consistent ultrasonic welding processes as part designs become more complex and requirements escalate. There is also a need for strong, dimensionally consistent parts with good cosmetics.
Weld data can be exported to Excel or Minitab for process optimization analysis.
Experiments at Ohio State University have shown a standard deviation of weld strength of 5.1% when using Dukane's servo-driven ultrasonic welder, compared to 9.4% when using a pneumatic welder.