Optimization Process of Double Spots Welding of High Strength Steel Using in the Automotive Industry | ||
| Engineering and Technology Journal | ||
| Article 10, Volume 41, Issue 1, January 2023, Pages 110-120 PDF (1.59 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.30684/etj.2022.134325.1236 | ||
| Authors | ||
| Hayder H. Khaleel* 1; Ibtihal A. Mahmood2; Fuad Khoshnaw3 | ||
| 1AL-Furat AL-AWASAT technical university | ||
| 2mechanical engineering department/ university of technology. | ||
| 3Engineering and Computing (SEC) programmes at DMU - Dubai campus | ||
| Abstract | ||
| Resistance Spot Welding (RSW) is one of the most important welding techniques used in the automotive industry because it is an economic process and is suitable for many materials. Many parameters affect the mechanical and microstructural properties of nugget formation and its strength, like welding current, electrode force, and welding time. Therefore, optimizing the RSW process to get the optimum welding parameters is necessary for automobile manufacturing companies. High-strength steel is widely used in the automotive industry because of its superior characteristics such as high strength-weight ratio, ductility, fatigue, and corrosion resistance. This paper presents an optimization process for RSW using the Taguchi method for high strength low alloy steel (HSLA) DOCOL 500 LA, considered a new steel grade. Two spots were used in this work.The mechanical and microstructural tests are achieved to get the maximum nugget strength, nugget diameter, different welding zones microstructures, microhardness values, and failure modes. The results showed that optimum welding parameters were welding current of 8800 Amp, welding time of 20 cycles, and electrode force of 1900 N. The failure mode for optimum conditions was a full pullout with tearing of the welded sheets because of high plastic deformation and absorbed energy. The maximum microhardness value is in the fusion zone, the heat-affected region, and finally, in the base material due to the nugget zone's rapid melting and solidification process. | ||
Highlights | ||
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| Keywords | ||
| Resistance Spot Welding; Taguchi method; High Strength Steel; Welding parameters; Failure mode | ||
| References | ||
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[1] H.L Jaber, M. Pouranvari, R.K Salim, F.A Hashim and S.P.H Marashi , “Peak load and energy absorption of DP600 advanced steel resistance spot welds”, Ironmak. Steelmak. 44 (2017), 699–706. doi.org/ 10.1080/03019233.2016.1229880. [2] Y.J. Chao, K.Wang, K.W Miller and X.K Zhu, “Dynamic Separation of Resistance SpotWelded Joints: Part I—Experiments”. Exp.Mech. 50 (2010), 889–900. doi.org/10.1007/s11340-009-9276-z. [3] M. Pouranvari , S. Sobhani and F.Goodarzi, “Resistance spot welding of MS1200 martensitic advanced high strength steel: Microstructure-properties relationship”. J. Manuf. Process. 31 (2018), 867–874. doi.org/10.1016/j.jmapro.2018.01.009. [4] D. Ren, D. Zhao, K. Zhao,L. Liu and Z, He. “Resistance ceramic filled annular welding of DP980 high-strength steel”. Materials & Design. 183(2019). doi.org/10.1016/j.matdes.2019.108118 [5] M .Pouranvari and SPH. Marashi. “Critical review of automotive steels spot welding: process, structure and properties” ci Technol Weld Join .18 (2013). 361–403. doi.org/10.1179/1362171813Y.0000000120 [6] A.M. Al-Mukhtar, “Review of Resistance Spot Welding Sheets: Processes and Failure Mode. in Advanced Engineering Forum”Trans Tech Publ. 17(2016). 31–57. doi:10.4028/www.scientific.net/AEF.17.31 [7] M. Marya, K.Wang., L.G Hector and X. Gayden. “Tensile-Shear Forces and Fracture Modes in Single and Multiple Weld Specimens in Dual- Phase Steels”. Journal of Manufacturing Science and Engineering. 128(2006). doi.org/10.1115/1.2137751 [8] Bolboacă and L. Jäntschi. “Design of Experiments: Useful Orthogonal Arrays for Number of Experiments from 4 to 16”. Entropy.( 2017). pp. 198-232. doi.org/10.3390/e9040198 [9] Sabah Khammass Hussein and Osamah Sabah Barrak. “Optimization the Resistance Spot Welding Parameters of Austenitic Stainless Steel and Aluminum Alloy Using Design of Experiment Method”.Eng. &Tech.Journal.34( 2016 ) No.7. [10] S. M Hassonia, O. S. Barraka, M. I. Ismaila and S. K. Hussein. “ Effect of Welding Parameters of Resistance Spot Welding on Mechanical Properties and Corrosion Resistance of 316L”. Materials Research 25 (2022). doi.org/10.1590/1980-5373-MR-2021-0117. [11] N. A. M. Yasin, A. Alisibramulisi, Z. Salleh, F.A. Ghazali and A.Pawan. “Optimization of Resistance Spot Welding (RSW) Parameters by using Taguchi Method”International Journal of Innovative Technology and Exploring Engineering (IJITEE) 9 (2020). doi: 10.35940/ijitee.C9215.019320 | ||
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