Methodology for Determining the Criterion for the High-Quality Formation of T-Shaped Joints by Resistance Projection Welding Using Mathematical Modeling

Resistance projection welding of various materials and alloys has become widespread in various branches of the machine-building industry due to the high productivity of the process, technological and economic parameters of manufacture of  manufacture  and  a  wide  diversity  of  types  of  welded  joints.  Despite  its  widespread  use,  technological  processes of resistance projection welding in production conditions are not always able to provide consistently high quality of welded joints. Due to the fact that the calculation of welding operation parameters is carried out according to a universal methodology based on the heat balance equation, there are no recommended parameters for different types of joints, which, as a rule, leads to an overestimation or underestimation of welding current values. Incorrectly defined parameters of projection welding lead to the appearance of a large number of defects in T-shaped joints. Mathematical modeling is one of the effective ways to improve  the  quality  of  welded  joints  obtained  by  resistance  projection  welding.  Existing  mathematical  models  of the projection welding process, as a rule, have significant approximations in setting important parameters of the operation from the point of view of the welding cycle, therefore, the development of a model that takes them into account is an urgent task. The paper examines the developed method of mathematical modeling of projection welding process of T-shaped joints, taking into account the phase control of the heat input power, which is used to determine the influence of energy mode parameters on displacement characteristics of movable electrode of a contact welding machine. Based on the results of mathematical modeling, recommended dependences of the parameters of resistance projection welding modes of T-shaped joints have been obtained. The model of the resistance projection welding process of T-shaped joints is implemented in the ANSYS software product. The adequacy of the developed mathematical modeling methodology has been confirmed by experimental studies of the resistance projection welding process.

1. Furmanov S. M., Polyakov A. Yu., Yumanov D. N., Kukharev A. N. (2018) On Phase Control of Heat Input in the Interelectrode Space During Resistance Welding. Vestnik Belorussko-Rossiiskogo Universiteta [Bulletin of the Belarusian-Russian University], (1), 80–91 (in Russian).

2. Polyakov A. Yu., Furmanov S. M., Fedotov B. V., Yumanov D. N., Kolobova M. S. (2017) Experimental Determination of Energy Parameters of the Resistance Relief Welding Process. Vestnik Belorussko-Rossiyskogo Universiteta [Bulletin of Belarusian-Russian University], (1), 74–83 (in Russian).

3. Yumanau D. N., Furmanov S. M. (2018) On Modeling Thermoelectric. Materialy, oborudovanie i resursosberegayushchie tekhnologii: materialy Mezhdunar. nauch.-tekhn. konf. [Processes during Resistance Relief Welding. Materials, Equipment and Resource-Saving Technologies: Proceedings of Scientific and Technical Conference]. Mogilev, Belarusian-Russian University, 189 (in Russian).

4. Yumanau D. N., Korolev E. M. (2022) Simulation of the Process of Contact Relief Welding with Software Control of Heat Input Power. Materialy, oborudovanie i resursosberegayushchie tekhnologii: materialy Mezhdunar. nauch.-tekhn. konf. [Materials, Equipment and ResourceSaving Technologies: Proceedings of Scientific and Technical Conference]. Mogilev, Belarusian-Russian University, 198 (in Russian).

5. Zhu W.-F., Lin Z.-Q., Lai X.-M., Luo A.-H. (2006) Numerical Analysis of Projection Welding on Auto-Body Sheet Metal Using a Coupled Finite Element Method. The International Journal of Advanced Manufacturing Technology, 28 (1–2), 45–52. https://doi.org/10.1007/s00170-004-2336-8.

6. Wan Z., Wang H.-P., Wang M., Carlson B. E., Sigler D. R. (2016) Numerical Simulation of Resistance Spot Welding of Al to Zinc-Coated Steel with Improved Representation of Contact Interactions. International Journal of Heat and Mass Transfer, 101, 749–763. https://doi.org/10.1016/j.ijheatmasstransfer.2016.05.023.

7. Yumanau D. N. (2023) On Calculating Power in Resistance Projection Welding Using ANSYS Mathematical Modeling. Novye materialy, oborudovanie i tekhnologii v promyshlennosti: materialy Mezhdunar. nauch.-tekhn. konf. molodykh uchenykh [New Materials, Equipment and Technologies in Industry: Proceedings of International Scientific and Technical Conference of Young Scientists]. Mogilev, Belarusian-Russian University. 98 (in Russian).

8. Yumanov D. N., Furmanov S. M., Smolar I. N., Kamchitskaya I. D., Koroteyev A. O. (2020) On the Influence of the Parameters of the Resistance Relief Welding Mode with Programmable Control of the Heat Input Power on the Stability of the Strength Parameters of the Joints. Vestnik Belorussko-Rossiyskogo Universiteta [Bulletin of Belarusian-Russian University], (3), 80–91 (in Russian).

9. Yumanau D. N., Naumovets I. A., Malashenko L. S. On the Movement of the Movable Electrode during Resistance Relief Welding as a Criterion for the Formation of a High-Quality Joint. Novye materialy, oborudovanie i tekhnologii v promyshlennosti: materialy Mezhdunar. nauch.-tekhn. konf. [New Materials, Equipment and Technologies in Industry: Proceedings of Scientific and Technical Conference]. Mogilev, Belarusian-Russian University, 105 (in Russian).

10. Furmanov S. M., Yakubovich D. I., Yumanov D. N., Malashenko L. S., Naymovets I. A. (2021) On the Influence of Heat Input Energy on the Width of the Fusion Line of T-Shaped Joints during Projection Welding with Program Control. Vestnik Belorussko-Rossiyskogo Universiteta [Bulletin of Belarusian-Russian University], (4), 88–95 (in Russian).

11. Furmanov S. M., Yumanov D. N. Yakubovich D. I., Emel'yanov S. N., Korolev E. M. (2022) On the Influence of Heating Current on the Strength of Joints during Resistance Relief Welding. Vestnik Belorussko-Rossiyskogo Universiteta [Bulletin of Belarusian-Russian University], (3), 87–95 (in Russian).