WELD ALLOYING IMPROVEMENT WITH SQUARE TYPE CURRENT WAVES ON ALTERNATING-CURRENT TUNGSTEN-ARC INERT-GAS-SHIELDED WELDING

摘要

This study was undertaken to establish the degree of alloying of aluminum and an aluminum-silicon alloy into a fusion weld by the alternating-current tungsten-inert-gas-shielded arc using various current wave shapes. The work was with the fusion welded closure of an aluminum-silicon alloy bonded aluminum-clad uranium-metal fuel element. Wave shapes from an asymmetric amplitude and 180 degrees out of phase third harmonic distorted sine wave to a virtually square symmetrical wave were used in the study.