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An innovative installation for pre-sowing treatment of seeds of various crops with cold plasma, it allows to increase their germination, resistance of plants to external stresses, productivity and ecological value of the product were proposed in this paper.

Based on the laser cutting of steel 09G2S, specific features of the power tool and its use are shown. The basic requirements for the quality of the cut surface and a wide range of material properties arising from the characteristics of the energy tool are formulated. The formation of a heat-affected zone, its structure and properties, the formation of macro- and microgeometry of the cut depending on the used working gas are described. The influence of laser cutting parameters on the provision of the required quality and properties of steel is considered.

On the example of plasma cutting of 1.0038 steel, the features of hydroabrasive (EPS) cleaning are shown. The basic requirements for the quality of the cut surface and a wide range of material properties due to the characteristics of the power tool are formulated. The formation of the heat-affected zone, its structure and properties, the formation of macro- and microgeometry of the cut depending on the working gas used are described. The influence of plasma cutting parameters on ensuring the necessary quality and properties of steel is considered.

A mathematical description of the gas motion in an electric discharge moving in the interelectrode gap under the action of the Lorentz force, considers in this paper. The presented model of the electric arc allows one to calculate the magnetic field acting on the charges in the discharge and to explain the occurrence of the arc shunting effect when moving along the electrodes.