Search academic texts

Information × Registration Number 0215U006148, 0113U003136 , R & D reports Title Materials science aspects of the restoration and strengthening of bearing metal by welding additional elements with a special profile and properties popup.stage_title Head Savulyak Valeriy Ivanovich, Registration Date 23-02-2015 Organization Vinnitsa National Technical University popup.description2 The main direction for further practical implementation of technology to strengthen and restore the selected installation of special linings on the beam of mobile machines with a view to restoring and strengthening. To ensure quality reinforced frames vehicles offer the following algorithm. On the basis of technical documentation, diagrams, drawings and databases built 3D-model of the vehicle frame. Then adjust the value of physical and mechanical properties of the frame material in the application package in finite element analysis. Carry out finite element partition model elements. Determine the performance required of the frame design in typical operating conditions. As a result, these tasks get the picture stress and strain fields of the frame in typical operating conditions, which gives an opportunity to highlight areas that operate with a minimum margin of safety. At this stage serves to perform preparatory operations (if necessary), and purification zones defektirovanie certain frames. Taking into account the previously obtained data on the stress fields define the shape (cross-section) and the dimensions of the elements gain. After determining the parameters of the gain elements determine the structure of the basic operations of the gain. At this stage, decisions are made about the need to duplicate elements amplification circuit of welding, the need for corrosion protection and the like. Identified in the process of diagnosing the cracks welded. To do this, hold the preparation of cracks in the kettle, which, if necessary, includes the steps of: providing access to the welding point, correcting and fixing elements in the correct position of the frame of the car, determining the visible tip of the crack, drill holes at the ends of the crack and the edges of the crack development. In the case of duplication of welded overlays to enhance recommended to implement the technology and related pre-heating. To this pad is positioned so that the distance between their contours were about 20 mm and the short welding seams is carried out in a staggered manner. The length of the seam is determined by the thickness of the frame. When the need for corrosion protection at the gain setting elements, it is proposed to use the solder with attendant welding. Width depends on the material of the solder (melting temperature, thermal conductivity), the welding conditions and the thickness of the walls of the frame structure and strengthening elements. Through the use of rational techniques perform welding residual stress can be obtained, will be partially offset operational. Product Description popup.authors Бакалець Дмитро Віталійович Заболотний Сергій Антонович Мадич Анатолій Володимирович Осадчук Андрій Андрійович Осадчук Андрій Юрійович Панасюк Сергій Олександрович Пригоцький Володимир Михайлович Савуляк Віктор Валерійович Савуляк Валерій Іванович Філіпченко Андрій Володимирович Федорченко Максим Петрович Шаповалова Олеся Василівна Шенфельд Валерій Йосипович popup.nrat_date 2020-04-02 Close