Accession Number : AD0286165

Title :   DEVELOPMENT OF ULTRASONIC WELDING EQUIPMENT FOR REFRACTORY METALS

Corporate Author : AEROPROJECTS INC WEST CHESTER PA

Personal Author(s) : MAROPIS,NICHOLAS

Report Date : AUG 1962

Pagination or Media Count : 1

Abstract : Work has advanced toward the development, design, and construction of a 25-kilowatt spot-type weld unit and associated power sourc . The d ilems relating to critical components of the 25-kilowatt unit, among which are ceramic washer type transducer assemblies, acoustic coupling elements, and power-force programming circuitry. Performance studies point to substantiation of Astroloy and Udimet 700 as similarly satisfactory tip alloys for welding refractory metals. Utilization of ceramic transdn of the welded framew rk was comple ed, in addition to variou welding control circuits. Evaluations continued in isolating and resolving problems relating to critical components of the 25-kilowatt unit, among which are ceramic washer type transducer assemblies, acoustic coupling elements, and power-force programming circuitry. Performance studies point to substantiation of Astroloy and Udimet 700 as similarly satisfactory tip alloys for welding refractory metals. Utilization of ceramic transducer assemblies, under the tension-shell concept, established, at the lower-power levels, a power-conversion efficiency in excess of projected limits. The performance of the aluminum-bronze coupler, fabricated during prior study, exceeds that of standard steel units. Performance appears enhanced by sculpturing to provide flexural relief. (Author)

Descriptors :   *INDUSTRIAL EQUIPMENT, *SPOT WELDING, *WELDING, CHROMIUM ALLOYS, COBALT ALLOYS, HEAT RESISTANT METALS + ALLOYS, MOLYBDENUM ALLOYS, NICKEL ALLOYS, NIOBIUM ALLOYS, POWER SUPPLIES, REFRACTORY MATERIALS, SHEETS, STAINLESS STEEL, TRANSDUCERS, TUNGSTEN

Distribution Statement : APPROVED FOR PUBLIC RELEASE