Bilik O. Perfection of the technology of a powder strip for wearproof deposition the details working in conditions abrasive and gaseous of wear

The object is the technological process of production of powder strip electrodes for deposition of wearproof alloys; the purpose - development of the scientifically-grounded technology of production of powder strip electrodes for deposition of wearproof alloys with stable welding-technological properties;methods - calculations and experimental, metallography, microanalysis and macrography of structure; in basis of mathematical models the elements of theory of thermal processes, methods of mathematical statistics, were fixed with the use of programmatic facilities of mathematical packages of Microsoft Excel, MathCad, based on numeral decisions;novelty - - the method of calculation of mass transfer is developed at melting of powder strip, allowing to define the degree of co-operation of mandrel and shell on the different stages of process of melting of powder strip. Basic factors, having influence on the coefficient of filling at the production of powder strip, allowing to make a powder strip with therequired coefficient of filling and welding-technological properties depending on composition of charge and metal of shell, are specified. The method of upgrading forming of structure of deposit metal is offered, consisting of the use of the longitudinal magnetic field, providing a receipt in the deposit layer of the required structure. On the basis of analysis of factors, influencing on the coefficient of filling, the method of the layer filing up of charge is offered in a shell with the preliminary compression of every previous layer before filing up subsequent, that allows at permanent geometrical sizes the shells of powder strip to multiply the coefficient of filling on 10-15% depending on composition of components of mandrel;results - the method of calculation of powder strip and technology of its production is Developed with the layer filing up of components of charge with the preliminary compression of every previous layer before filing up subsequent, that allows to make a powder strip with the required coefficient of filling;the method of estimation of mass transfer of electrode metal is developed at deposition of wearproof alloys powder strip electrodes. The optimum modes of the longitudinal magnetic field are certain for forming of necessary structure of deposit layer at mechanized arc deposition by a powder strip. The optimum modes of the joint wringing out of shell and mandrel are certain at the production of powder strip, providing their stable welding-technological properties at deposition of the wearproof alloyed and compositions alloys;degree of introduction - is tests of productions and introduction of results of the conducted researches on Open Society "Toreztverdosplav" at the production of powder strip electrodes allowed to get the expected economic effect 15 thousands of UAH on a 1 ton of the expended material;sphere of use - in an electrode production at making of powder strip electrodes for deposition of wearproof alloys, and also on enterprises on making and consolidating of details of travelling and agricultural machines