Mathematical model of heat source at the gas mixture shielded MAG-welding. Part 2. Pulse process

摘要

Self-congruent nonlinear mathematic model of heat source at the pulse gas-mixture shielded MAG -welding reflecting the electric, energetic and heat phenomena dynamics in welding circuit is developed. The instant current and voltage oscillograms as well as pulse arc current-voltage characteristic are calculated and measured. The pulse arc efficiency in the middle current field is 80-85 %.