Pengaruh Proses Tacking dan Welding Sequence Terhadap Distorsi Pada Pengelasan Butt Joint Pipa Dengan Flange Berbahan Carbon Steel
Abstrak
Penelitian ini mengeksplorasi isu distorsi pada spool pipe dalam konteks proses fabrikasi, dengan penekanan khusus pada sambungan pipa dengan flange. Tujuan utama penelitian ini adalah untuk menyelidiki dampak distorsi yang timbul akibat proses tacking selama fit up dan urutan welding sequences pada proses welding. Eksperimen dilakukan dengan metode pengambilan data melalui inspeksi konsentrisitas sambungan menggunakan alat Total Station Sokkia CX 101 S/N GP1159, dengan toleransi 1 mm dan 0,75 mm pada capping weld. Lokasi pengujian yang digunakan yang digunakan adalah Fabrication Piping and Structure Onshore, dengan ASTM A671 CC60-12 sebagai material pengujian. Seluruh pengujian dilakukan pada suhu ruang. Hasil inspeksi digunakan sebagai pedoman untuk proses perbaikan, memberikan arahan kepada fitter untuk memperbaiki sambungan, dan memungkinkan welder mempertahankan kepresisian sambungan pipa dengan flange agar tidak mengalami distorsi. Berdasarkan hasil percobaan, konsentrisitas sambungan pipa mencerminkan distorsi yang terjadi, sementara sequences pengelasan menunjukkan efek counter pada setiap langkah pengelasan. Hasil distorsi setelah pengelasan sebesar 0,75 mm sehingga masih sesuai dengan spesifikasi klien.
##plugins.generic.usageStats.downloads##
Referensi
H. Wang, Z. Wang, P. Bai, S. Hu, Y. Zhang, and R. Wang, “Optimized segmented heat source for the numerical simulation of welding-induced deformation in large structures,” Advances in Engineering Software, vol. 117, pp. 1–7, Mar. 2018, doi: 10.1016/J.ADVENGSOFT.2017.12.005.
M. De Abreu, M. Iordachescu, and A. Valiente, “Fatigue life assessment of a tack welded high-strength wire mesh for reinforcement of precast concrete bridge girders,” Constr Build Mater, vol. Volume 197, no. ISSN 0950-0618, pp. 421-427, 2019.
M.Panji, A.S Baskoro, and A widyianto, “Effect of Welding Current and Welding Speed on Weld Geometry and Distortion in TIG Welding of A36 Mild Steel Pipe with V-Groove Joint,” in IOP Conference Series: Materials Science and Engineering, , 694, 012026, IOP Publishing, 2019.
Agus Widdyianto, Ario Sunar Baskoro, Ganjar Kiswanto, and M Fathin Ginanjar Ganeswara, “Effect of Welding sequence and welding current on distortion, mechanical properties and metallurgical observations of Orbital pipe welding on SS 316L,” Eastern - Europian Journal of Enterprise Technologies, vol. 2, no. (12 (110)), pp. 22–31, 2021, doi: DOI: 10.15587/1729-4061.2021.228161.
I. Sattari-Far and Y. Javadi, “Influence of welding sequence on welding distortions in pipes,” International Journal of Pressure Vessels and Piping, vol. 85, no. Published by Elsevier Ltd., pp. 265–274, Jul. 2007, doi: doi:10.1016/j.ijpvp.2007.07.003.
M. Abid and M. Siddique, “Numerical simulation to study the effect of tack welds and root gap on welding deformations and residual stresses of a pipe-flange joint,” International Journal of Pressure Vessels and Piping, vol. 82, no. 2005 Elsevier Ltd, pp. 860–871, Jun. 2005.
Romero, Jesus Saha, Baidya Toledo, Gengis, Beltran-Bqz, and David, “ Welding sequence Optimization Using Artificial Intelligence Techniques, an Overview,” SSRG International Journal of Computer Science and Engineering (SSRG-IJCSE), vol. 3, pp. 91–95, Jan. 2016.
Chunbiao Wu, Chao Wang, and Jae-Woong Kim, “Welding sequence optimization to reduce welding distortion based on coupled artificial neural network and swarm intelligence algorithm,” Eng Appl Artif Intell, vol. Volume 114, no. ISSN 0952-1976, pp. 105–142, 2022.
Biswas, Pankaj, Anil Kumar, and Deepati, “A Study on the Effect of Welding sequence in Fabrication of Large Stiffened Plate Panels,” J. Marine. Sci. Appl, vol. 10, Jan. 2011.
PT SMOE, “Client Specification (Private file),” Batam, 2018.
PT SMOE, “WPS and PQR (Private file),” Batam, 2018.
Y. P. Yang, “Recent Advances in Prediction of Weld Residual Stress and Distortion — Part 2,” Weld J, vol. 100, no. 6, pp. 193S-206S, Jun. 2021, doi: 10.29391/2021.100.016.
