FW

Monitoring of Welding Processes with Application of Artificial Neural Networks

The paper presents a summary of methods of monitoring systems’ development for the processes involving heating of filler material and/ or base metal by the electric current and with periodical shortages of the welding circuit. The processes investigated were MAG welding, underwater flux-cored welding and flash-butt welding. Details of experiments, primary data processing procedures based on statistical analysis methods are described, the aim of primary processing being obtaining of informative parameters of the welding processes.

Application of Impulsive Electromagnetic Affects for Crystallization Process of Joints for Spot Welding

Results of external influenced impulsive electromagnetic affect research to crystallization joint process with construct and stainless steel, and dissimilar material joints for spot welding are researched. Changes in different weld spot structures are shown. The samples obtained using design mode of spot welding with the impulsive electromagnetic affects, were compared and an increasing in the dispersity structure by twice times was indentified, but the dendrite width was decreased. Impulsive electromagnetic affect influence on weld line length is studied.