Fetures of increase of productivity of welding an consumable electrode in gas shielded at the expense of arch activation
Keywords:
activation arc, consumable electrode, shielding gas, weldingAbstract
One of the priorities of arc welding is to improve its performance. The traditional solution to this problem involves increasing the amount of metal per unit of time weld. This is due to the limited capacity of the penetrating arc. However, this increases the attachment of heat in the weld, which adversely affects its quality. To solve this problem requires a fundamentally different approach - an increase in the penetration depth. This can be achieved by increasing the penetrating power of the arc by reducing the diameter of the electrode wire or the use of activating fluxes. Studies indicate that by reducing the diameter of the electrode wire can achieve a substantial increase in the penetration depth. However, the practical implementation of this direction is associated with a number of technical difficulties. The second direction of solving this problem is the development and application of welding consumable electrode activating fluxes by analogy with ATIG-welding.
If the penetrating power of the arc when welding in the traditional way to take 1, the use of activating flux can increase it by 2-2.5 times. Therefore, for single full penetration weld metal thickness of 10 mm with the conventional method requires heat input 24694 J/cm. Increase penetrating power of the arc to 2.5 times accompanied by a reduction of heat input required for the base metal thickness of 10 mm to 8103 J/cm.
Application of activating flux for welding consumable electrode helps to reduce the length of stay of the weld metal at high temperatures, which has a positive effect on its properties. This is to increase the viscosity of weld metal at low temperatures. Activating fluxes for welding consumable electrode provides increased productivity by 3-4 times compared with traditional technologies. Application of activating fluxes for welding consumable electrode gas shielded welding provides increased performance while reducing its energy consumption and improving the properties of welded joints.References
Paton B. E. (1977) Technology of electric fusion welding, Moskow, Engineering, 768 p. 2. Akulov A. I., Belchuk G. A., Demyantsevich V. P. (1977) Technology and equipment for fusion welding, Moskow, Mechanical Engineering, 432 p. 3. GOST 14771-76 GOST 14771-69 instead of arc welding in inert gas. Welded joints. Main types, sizes and structural elements, 37 p. 4. Makara A. M., Mosendz N. A. (1971) Welding of high strength steels, Kiev, Tehnika, 140 p. 5. Savytsky M. M., Leskov G. I. (1980), Mechanism of the effect of electronegative elements on the penetrating power of the arc with tungsten cathode // Automatic Welding, No 9, pp. 17–22. 6. Sawicky M. M., Kouchnirenko B. N., Oleinik O. I. (1999), Features tungsten electrode welding steels with activating fluxes // Automatic Welding, No 12, pp. 20–28. 7. Savytsky M. M. (1999), Technology welding of high strength steels in rocket // Automatic Welding, No 8, pp. 30–36. 8. Voropai N. M., Belfor L. M. (1981), Mechanized welding in CO2 activated wire diameter 3...4mm // Automatic Welding, No 10, pp. 51–54. 9. Voropai N. M., Kosteniuk N. I. (1986) Effect of composition on the characteristics of the activated wire welding process in carbon dioxide // Automatic Welding, No 7, pp. 2–5. 10. Voropai N. M. (1994), Features and technological capabilities of the process gas-shielded welding consumable electrode activated // Automatic Welding, No 4, pp. 13–19. 11. Dudko D. A., Savytsky A. M., Vasiliev V. G., Novikova D. P. (1996), Structure and properties of welded joints formed with thermal cycling // Automatic Welding, No 2, pp. 6–7. 12. Shorshorov M. H., Belov V. V. (1972) Phase transformations and changes in the properties of steel welding, Moscow, Nauka, 220 p. 13. Gridnev V. N., Meshkov Yu. Ja., Oshkaderov S. P., Trefilov V. I. (1973) Physical basis of electrothermal hardening steel, Kiev, Naukova Dumka, 336 p. 14. Sterenbogen Yu. A., Petrov P. F. Effect of the temperature interval of crystallization propensity to form steels kristallizatsiolnnyh cracking when welding // Automatic Welding, No 7, pp. 10–13. 15. Demyantsevich V. P. (1965) Metallurgical and technological bases of arc welding, Moskow, Mashgiz, 269 p. 16. Gulyaev A. P. (1966) Metallography, Moscow, Metallurgy, 680 p.
Downloads
Published
Issue
Section
License
Copyright (c) 2015 А. М. Савицкий, М. М. Савицкий, Ю. Н. Шкрабалюк
This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.
All authors agree with the following conditions:
- The authors reserve the right to claim authorship of their work and transfer to the journal the right of first publication of the work under the license agreement (the agreement).
- Authors have a right to conclude independently additional agreement on non-exclusive spreading the work in the form in which it was published by the jpurnal (for example, to place the work in institution repository or to publish as a part of a monograph), providing a link to the first publication of the work in this journal.
- Journal policy allows authors to place the manuscript in the Internet (for example, in the institution repository or on a personal web sites) both before its submission to the editorial board and during its editorial processing, as this ensures the productive scientific discussion and impact positively on the efficiency and dynamics of citation of published work (see The Effect of Open Access).
