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Information × Registration Number 0219U000821, 0116U006109 , R & D reports Title Research changing forms and structure of the arc discharge in arc welding popup.stage_title Head Kovalenko Vladyslav Leonidovych, Registration Date 28-02-2019 Organization Faculty of аircraft and space systems NTUU "KPI" popup.description2 The work contains 101 pages of computer text, 110 illustrations, 7 tables and 37 references. relevance of the topic: One of the urgent problems of manual arc welding is the heat input to the base metal and the analysis of this process through the energy characteristics and zones of the arc discharge. In the literature there are many models of thermal energy distribution in an arc discharge, but they are all based on data obtained through photographing through a light filter. This is what makes great adjustments to the accuracy and adequacy of the distribution of thermal fields in the arc discharge. Therefore, the work to eliminate this drawback is extremely important and new. Since at the present time similar work was not found. The object of study is a welding arc discharge in non-consumable electrode argon-arc welding. The subject of the research is the geometric characteristics of the arc discharge under conditions of manual welding with a non-consumable electrode, its variation and internal features. Photographic fixation of the image of the arc discharge without digital and geometric distortion. The scientific novelty of the research is as follows: - a technique of photographing an arc discharge based on a light filter from a neutral film was developed, which allows photographing an arc discharge without distortion of colors and shape. - developed transmission and reflecting spectroscopes to obtain radiation spectra, with which you can determine the temperature of radiation objects. - for the first time, an image of welding arcs was obtained with TIG welding at various values of current strength without geometric or color distortion. The photographs clearly show the typical zones of the arc discharge. - a method of digital processing (increase of contrast) of photographs was created, which made it possible to clearly separate the zones in the welding arc and makes it possible to judge the geometrical characteristics. - a mathematical model was created that allows determining the length of the high-temperature zone of the welding arc depending on the strength of the welding current and the algorithm for determining the influence of the high-temperature zone on the base metal during manual arc welding with a non-consumable electrode. Keywords: photographing the arc discharge, contactless methods for determining the temperature, neutral filter, TIG welding, spectrometry, zones of the arc discharge, high-temperature section of the arc. Product Description popup.authors Квасницький Віктор Вячеславович Коваленко Владислав Леонідович popup.nrat_date 2020-04-02 Close