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рівняння регресії
контурний графік
електроконтактне наплавлення
присаджувальний матеріал
деформація
порошковий дріт
regression equation
contour graph
resistance-welding
filler materials
deformation
powder wire

Побудовано статистичну модель, що пов’язує основні параметри технологічного процесу електроконтактного наплавлення порошковим дротом зі ступенем пластичного деформування останнього. Отримано рівняння математичної регресії, які доводять, що найбільший вплив на ступінь пластичного деформування порошкового дроту при електроконтактному наплавленні чинить сила та час протікання імпульсу електричного струму, а також хімічний склад порошкового осердя дроту.
Analysis of the researches and publications concerning the impact of the conditions of plastic deformation of filler materials on the reshaping of the cross-section of the wire and on the contact surface of the wire with base metal during the process of resistance fusing has been carried out by the authors. Available models of forming the connection during the resistance fusing with continuous wire have been investigated, and calculation estimation of the condition of plastic deformation effect on the density of active centers and the adhesion strength of coating with the base metal has been carried out. It has been stressed, that the process of deformation of the powder wire, that can be used as filler material under the resistance fusing, as well as the influence of the degree of its plastic deformation on the density of the resulting layer, adhesion strength and the technical and operational properties of coating have not been investigated enough. The key factors influencing the process of the powder wire deformation during the resistance fusing have been found and analyzed. Basing on the results of experimental studies and mathematical processing of the results in the software environment Statististica_V6 (StatSoft) the mathematical and statistical models of the process of plastic deformation of filler material as the powder wire during resistance fusing have been developed and built. While developing this model the following operations were conducted: testing of the reproducibility of experiments, determination of the mathematical regression coefficients, checking of the linear model correctness, as well as the evaluation of the importance of the regression coefficients of the derived equations. The degree of plastic deformation of filler material was found to be dependent on the combination of the main parameters of the resistance fusing regime. Thus, by increasing the strength and time of the electrical pulse fusing impulse and the electrical resistance of the powder filler core the deformation degree increases as well. The increase of the powder wire shell thickness and the effort on the roller-electrode within certain limits results in the decrease of the plastic deformation degree of filler materials during resistance fusing.