Kiev, Ukraine
Kiev, Ukraine
A theoretical development of formulae for the definition of a speed of welding deposition on a flat is presented where in the first case cross oscillations are applied on it and in the second one – longitudinal oscillations. The law of oscillation motion for both variants and also the law of sinusoidal oscillations of a welding tool are specified. In such a way, the computation of the rate of welding deposition in both cases is carried out under conditions of an additive oscillation effect. The realization of continuity conditions with the application of a heating source motion according to a sinusoidal law at a motionless surface to be under welding deposition – a uniform formation of a beaded weld on a width which is characterized by the position of a continuity point is assumed as a basis of the computation. In case of a shift of the surface under welding deposition this condition will change considerably as a point of continuity will be shifted in which connection in the first case – crosswise, and in the second – lengthwise. The module of the shift of this point is specified by a differential equation which describes motion character equally both at longitudinal and transversal shift of the surface under welding deposition. Final expressions for a welding deposition rate will differ that is caused by a difference in a mathematical description of a continuity condition.
continuity, periodical effect, welding deposition rate, harmonic oscillation.
1. Sarayev, Yu.N., Lebedev, V.А., Novikov, S.V. Analysis of existing methods for metal structure control in weld seam // Mechanical Engineering: network electronic scientific journal. – 2016. – Vol.4, №1. – pp. 16‒26.
2. Sutyrin, G.V. Investigation of low-frequency oscillation effect mechanism upon molten pool crystallization // Automatic Welding. – 1975. – № 5. – pp. 7‒10.
3. Boldyrev, А.М. On mechanism of metal weld seam formation at low-frequency oscillations introduction into molten pool // Welding Engineering. 1976. – № 2. – pp. 52–55.
4. Slavin, G.А. Formation of disoriented metal seam structure at application of low-frequency disturbances upon molten pool // Welding Engineering. – 1980. – № 6. – pp. 3–5.
5. Aristov, S.V., Russo, V.L. Metal seam crystallization at melt low-frequency oscillations // Welding Engineering. – 1982. – № 11. – pp. 42–44.
6. Morozov, V.P. Analysis of milled structure formation at molten pool metal crystallization with application of external periodical disturbances // College Proceedings. Mechanical Engineering. – 2006. – № 8. – pp. 41–54.
7. Morozov, V.P. Effect of crystallization oscillation me-chanism upon decomposition process of metal seam primary structure and thermal effect area // Science and Education. – 2010. – № 9.– pp. 1–18.
8. Danilov, А.I. et al. Condition for welding deposition continuity at heating source motion according to sinusoidal law // Welding Engineering. – 1980. – № 2.– pp. 26.
9. Lebedev, V.А., Dragan, S.V., Novikov, S.V. Definition of pulse mechanical effect parameters upon molten pool for metal structuring at automatic arc welding deposition // Proceedings of Shipbuilding National University. 2016. № 1.
10. Chen Siaofun, Shi Tsunyao et al. Peculiarities in metal seam crystallization at aluminum alloy electric welding with beam scanning // Automatic Welding. – 1988. – № 10.
11. Tikhonov, А.N., Samarsky, А.А Equations of Mathematical Physics. М.: Science, 1977. pp. 23, 27, 86, 103.