Analysis of ways of increase and criteria for evaluation of stability of the welding arc category
Abstract
Analysis of ways of increase and criteria for evaluation of stability of the welding arc category
Incoming article date: 17.05.2016In article the analysis of ways of increase and criteria for evaluation of stability of the welding arc category is carried out. The most perspective way of increase of stability of the arc category, can be carried out due to pulse, high-frequency impact on a welding contour. The experimental data obtained at research of the combined power supply system of the arc category of a direct current at parallel connection to the main welding power supply of the additional generator of impulses are given. Influence of a pulse component from the additional generator with a frequency of 40 kHz, on stability of burning of the arc category is considered at manual arc welding by the covered electrodes. As criteria for evaluation of stability of burning of the arc category have been accepted such as, the explosive length of an arch with which there is it's natural break and coefficient of stability. The conducted pilot studies and positive results of skilled approbation of the developed power supply system of the arc category allow to recommend it for application at installation of responsible metal designs.
Keywords: Stability, the welding arc category, welding by the covered electrodes, pulse impact on a welding contour, explosive length of an arch, stability coefficient, the electromagnetic field, the generator of impulses