DEVELOPMENT OF ULTRASONIC WELDING WITH EMPHASIS ON PRODUCING HERMETIC SEALS.
Abstract
Uniformly reproducible ultrasonic ring and continuous-seam welds of hermetic-seal quality were produced in several alloys of different gages and in various geometries. The delineation of problems relating to high power delivery in a torsional system indicates that specifications for a ring-type welding unit with a 5-kilowatt power-handling capacity, and capable of welding heavy-gage structural aluminum sheet can result. Continuous-seam welds at speeds in excess of one foot/minute were produced in 0.040- and 0.064inch 2014-T6 aluminum alloy, with and without inter-leaf, using a 5-kilowatt welding unit. Weld strengths achieved were up to 95 percent of parent metal strength. Modification can be made to the ultrasonic continuous-seam unit to handle up to 10 kilowatts in continuous operation, producing welds at reasonable rates in 0.080-inch sheet. Theoretical and experimental studies delineated impedance-matching requirements for optimum coupling of the ultrasonic energy to the weldment materials. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1963
- Accession Number
- AD0600597
Entities
People
- J. Byron Jones
- John G. Thomas
- Nicholas Maropis
- William N. Rosenberg