Perancangan Jig Welding Pada Proses Assembly Support Frame Sebagai Komponen Knelson Screen Owner PT. Metso Outotec di PT. PAL INDONESIA

Adrianto, Hendri (2024) Perancangan Jig Welding Pada Proses Assembly Support Frame Sebagai Komponen Knelson Screen Owner PT. Metso Outotec di PT. PAL INDONESIA. Project Report. [s.n.], [s.l.]. (Unpublished)

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Abstract

Dalam konteks fabrikasi peralatan pengolahan mineral skala industri, ketidakakuratan pada proses pengelasan assembly support frame Knelson screen owner—komponen krusial pada concentrator gravimetri PT. Metso Outotec—menyebabkan distorsi termal dan misalignment yang berdampak pada efisiensi operasional hingga 30%. Penelitian ini mengembangkan jig welding khusus melalui pendekatan rekayasa terintegrasi, mencakup pemodelan 3D parametric menggunakan SolidWorks, analisis elemen hingga (FEA) berbasis ANSYS untuk validasi tegangan von Mises di bawah beban 5 ton (σ_max<350 MPa), serta optimasi desain fixture hidraulik modular guna meminimalkan residual stress pasca-welding. Eksperimen prototipe pada workshop PT. PAL Indonesia menunjukkan pengurangan waktu siklus assembly dari 8 jam menjadi 4,8 jam (penurunan 40%), deviasi geometri ≤0,4 mm, dan defect rate welding dari 12% menjadi 3% berdasarkan pengujian NDT (ultrasonic dan radiographic). Inovasi ini tidak hanya meningkatkan throughput produksi batch-wise, tetapi juga mendukung skalabilitas manufaktur offshore untuk industri pertambangan berkelanjutan di Indonesia, dengan potensi replikasi pada aplikasi heavy fabrication serupa.
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In the context of industrial-scale mineral processing equipment fabrication, inaccuracies in the welding process of the Knelson screen owner assembly support frame—a crucial component in PT. Metso Outotec—causes thermal distortion and misalignment that impacts operational efficiency by up to 30%. The research developed a custom welding jig through an integrated engineering approach, including parametric 3D modeling using SolidWorks, ANSYS-based finite element analysis (FEA) for validation of von Mises stresses under 5 tons (MPa) loads, and optimization of modular hydraulic fixture design to minimize post-welding residual stress. Prototype experiment at the workshop of PT. PAL Indonesia showed a reduction in assembly cycle time from 8 hours to 4.8 hours (a decrease of 40%), a deviation of geometry ≤0.4 mm, and a welding defect rate from 12% to 3% based on NDT (ultrasonic and radiographic) testing. This innovation not only increases batch-wise production throughput, but also supports the scalability of offshore manufacturing for Indonesia's sustainable mining industry, with the potential for replication in similar heavy fabrication applications.σ_max<350

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Jig, Welding, Assembly, Support Frame, Knelson Screen
Subjects:	T Technology > TS Manufactures > TS183 Manufacturing processes. Lean manufacturing. T Technology > TS Manufactures > TS227 Welding.
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Hendri Adrianto
Date Deposited:	19 Jan 2026 02:31
Last Modified:	19 Jan 2026 02:31
URI:	http://repository.its.ac.id/id/eprint/129676

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