Optimizatsiya protsessa kontaktnoj mikrosvarki provodnikov s armaturoj germovvodov ehlektropribora

The thesis is devoted to development of technological process and optimization of parameters for the contact spot condenser microwelding of solid and multifilament conductors with elements of the hermetic electrical device, and also to choosing the parameter and mode of automatic quality control of the welding joints, to development of manual instruments and approbation of the experimental-industrial equipment, which are intended for mounting of welding joints of the hermetic electrical device. The method of optimization of technological parameters of process based on nondiscrete-logical modeling and method of optimization by the multivariable design of experiments (steep ascension - Box-Wilson's method) is applied to solute the tasks, which have arisen. The metallographic researches of welding joints with microscopes MBS-2 and MIM-8M used are applied. For recording of dynamics of the electrical parameters modification during welding the double-beam storage oscillograph C8-11, equipped with four-channel commutator, was used; the oscillograms photographed by the camera "Zenit ET". Measurement of settling magnitudes by the indicator ICh-10 was carried out. The experimental proving of known basic solutions for welding of conductors with elements of the hermetic electrical device is realized. Using the systems analysis with applications of logical functions, the nondiscrete-logical (NL) model of process of the contact spot condenser microwelding of solid and multifilament conductors with elements of the hermetic electrical device was developed by author for the first time. On the basis of NL-model the development of basic solutions and preliminary optimization of technological parameters of process of contact spot condenser microwelding of solid and multifilament conductors with elements of the electrical device and optimization by the multivariable design of experiments was realized, as a result of which the optimum conditions for all types of mounting joints of the electrical device are specified. The welding joints strenght raises 1.2 times in comparison with NL-optimization. The regression equation, that adequately describes the gradient motion to the optimal factors' region and reflects the each factor's influence degree on the parameter of optimization in the investigated interval of the factors variation, was obtained. On parameter of optimization (welding joints tearing strength) the least influence has value of working capacitors, the greatest influence has compression force on electrodes and voltage of capacitors charging. The researches of welding process technological parameters influence on formation process of welded joints of conductors with elements of the hermetic electrical device on designed manual instruments and at approbation of the experimental-industrial equipment were carried out. The research of correlation of conductor settling with strength of welding joints, which has confirmed that the final settling value can serve as joints quality control parameter, was realized. On the basis of it the mode of automatic quality control of the welding joints was developed and the device of the welding joints automatic quality control on final settling value is tested. The allowable levels of settling for all types of electrical device mounting joints were found.Abstracts in Latvian, English, Russian, separate summaries in Latvian, EnglishAvailable from Latvian Academic Library / LAL - Latvian Academic LibrarySIGLELVLatvi