Shchetynin S. Scientific bases of one-sided high-speed welding and surfacing processes development

Research object - one-sided high-speed welding and surfacing. Research subject - arc, welding current magnetic field, arc pressure, structure and welding joints and surfacing property.Research methods. the speed filming, linear method on an optical microscope, method of rentgenostrukture analysis and laser mikrospektroanaliz, x-ray photography x-raying, experiments in the production terms of gazo- and pipelines welding, experimental researches, physical and mathematical designs, analytical and numeral methods, calculations on a computer was used. Electromagnetic nature of cuts formation under of arc magnetic field action and one-sided high-speed welding using composit elektrode process, which promotes of weld forming quality and welding joints impacting viscosity is first developed. It is proved, that at one-sided high-speed welding using composit electrode the arc active spot size and crystallization speed of pool metal increased, arc pressure lower, that provides the high-quality of reverse weld forming on flux pillow. Аt pipes welding the magnetic blower increases as a result of the magnetic field force lines concentration in a pipe and induction increase is founded. The pipes one-sided high-speed welding process with a current conductor coil was developed. The mechanism of crackfirmness increase at high-speed surfacing on low energy process as a result of crystal lattice microdistortion, microstress, distributions density, welding tensions lower and growing of refined structure was first developed.