Determining patterns in the generation of magnetic fields when using different contact welding techniques

The object of this study is the quantitative characteristics magnetic fields induced during electric contact welding in various ways: point, arc-butt, capacitor contact-butt continuous, and pulsating fusion. problem to be solved lack necessary information regarding electromagnetic safety these techniques. A description proposed methodological approaches determining levels fields, their measurement tools, methods for assessing impact on welder's body given. Based analysis processing acquired oscillograms spectrograms were measured. To determine general level polyfrequency field arising at welding, generalized indicator was used. It established that point by a stationary machine, exceeds maximum permissible value workplace range 50–1000 Hz distance 0.3 m from electrodes. When manually way, frequency bands 5–50, directly near electrical cable. Capacitor spot with direct current characterized exceeding MP high-frequency 1000–10000 Hz. During arc-butt no excess detected workplace. shown spectral composition magnitude signal determined technique initial parameters power supplies. Orimani results can used production labor protection.