DEVELOPMENT OF COMPLICATED OSCILLATION ALGORITHM FOR CONTINUITY ASSURANCE AT ARC WELDING DEPOSITION
Abstract and keywords
Abstract (English):
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.

Keywords:
continuity, periodical effect, welding deposition rate, harmonic oscillation.
Text
Text (PDF): Read Download
References

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.

Login or Create
* Forgot password?