Optimasi Kualitas Proses Bending untuk Mengurangi Deformasi Produk Menggunakan Metode Seven Tools dan PDCA di Industri Manufaktur
DOI:
https://doi.org/10.31004/jutin.v9i2.55075Keywords:
Pipe Bending Process, Pipe Deformation, PDCA, Seven Tools, Quality Control, OptimizationAbstract
The pipe bending process in the manufacturing industry, particularly for air conditioner (AC) components, often faces quality problems in the form of flattening (ovalization) and wrinkle defects, which can reduce product functionality and strength. Initial data show that the defect rate reached 8.2%, exceeding the company’s target of ≤ 3%. This study aims to reduce these defects by applying the PDCA (Plan–Do–Check–Action) method supported by the Seven Quality Control Tools. Data were collected from 18,000 production units during the January–March period using check sheets and analyzed using histograms, Pareto diagrams, and fishbone diagrams to identify dominant defects and their root causes. Improvement actions included adjusting bending machine parameters, modifying the mandrel design, developing and implementing Work Instructions, adding measuring tools, applying lubrication, and providing operator training. The results show a significant reduction in nonconforming products from 691 units to 37 units, equivalent to 0.21% of total production, with the bending process operating in a stable and statistically controlled condition. Thus, the integration of PDCA and the Seven Quality Control Tools is proven to be effective in improving quality and production efficiency.References
V., Trianda, F., Wiyatno, T. N., & Kustiwan, S. (2026). JUTIN : Jurnal Teknik Industri Terintegrasi Analisa Defect pada Produk Back Cover Menggunakan Metode PDCA untuk Pengurangan Claim Customer di PT . XYZ. 9(1), 731–736. https://doi.org/10.31004/jutin.v9i1.54360
Khaerudin, D., & Rahmatullah, A. (2020). Implementasi Metode Pdca Dalam Menurunkan Defect Sepatu Type Campus Di Pt. Prima Intereksa Indastri (Pin). Jurnal Sains Dan Teknologi: Jurnal Keilmuan Dan Aplikasi Teknologi Industri, 20(1), 34. https://doi.org/10.36275/stsp.v20i1.228
Putra, H., Hakim, A., & Sulistiyowati, W. (n.d.). Quality Control of Sandwich Panel Products Using Seven Tools and Six Sigma Methods [ Pengendalian Kualitas Produk Sandwich Panel Menggunakan Metode Seven Tools dan Six Sigma ]. 1–13.
Putra, N. B., Fajar Fitriyana, D., Anis, S., Doni Widodo, R., Manalu, J., Siregar, J. P., Cionita, T., & Ardhianto, M. M. (2025). Penerapan Siklus Plan-Do-Check-Action untuk Mengurangi Cacat Permukaan pada Produk Outer Tube Model 2DP di PT. XYZ. Jurnal Rekayasa Mesin, 20(1), 49–72. https://jurnal.polines.ac.id/index.php/rekayasa
Wiranata, R. (2025). Optimalisasi Proses Manufaktur Untuk Mengatasi Cacat Diameter Flange Oval Pada Baut Tipe Flange Dengan Metode PDCA. AME (Aplikasi Mekanika Dan Energi): Jurnal Ilmiah Teknik Mesin, 11(2), 80–85. https://doi.org/10.32832/ame.v11i2.1506
Bimasakti, Slevin Lintang, and Sutrisno Aji Prasetyo. 2025. “Pengendalian Kualitas Pada Proses Thread Rolling Menggunakan Metode Plan Do Check Action ( Pdca ) Dan Qc Seven Tools Pendahuluan Seiring Dengan Meningkatnya Permintaan Akan Barang-Barang Berkualitas Tinggi Di Pasar Domestik Dan Internasional , Industri Ma.” 6(9): 3541–56.
Dian. 2019. “Analisis Pengendalian Kualitas Pada Proses Produksi Kran Air PVC Menggunakan Metode Plan Do Check Action (PDCA) Pada PT. Tarindo Juwana.” Pelaksanaan Pekerjaan Galian Diversion Tunnel Dengan Metode Blasting Pada Proyek Pembangunan Bendungan Leuwikeris Paket 3, Kabupaten Ciamis Dan Kabupaten Tasikmalaya Jawa Barat 1(11150331000034): 1–147.
Fatah, Abdul, and Ari Zaqi Al-Faritsy. 2021. “Peningkatan Dan Pengendalian Kualitas Produk Dengan Menggunakan Metode PDCA (Studi Kasus Pada PT. X).” Jurnal Rekayasa Industri (JRI) 3(1): 21–30. doi:10.37631/jri.v3i1.288.
Herwanto, Anindya Rahmadina Dene. 2025. “Penerapan Metode Seven Tools Pada Pengendalian.” Industri Inovatif - Jurnal Teknik Industri ITN Malang VIII(2): 5970–78.
Imelda, Lie. 2019. “Calyptra: Jurnal Ilmiah Mahasiswa Universitas Surabaya Vol.7 No.2.” Calyptra 8(1): 1329–47.
Inayah, Siti Khalimatul, Wahyudin Wahyudin, and Dene Herwanto. 2023. “Analisis Kualitas Produk Toolbox Menggunakan Metode Seven Tools Di PT. KSKB.” Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi 5: 263–72. doi:10.35814/asiimetrik.v5i2.4877.
Nugroho, Cahyo Budi, and Rahmad Hidayat. 2016. “Studi Cacat Permukaan Plat Aluminium Pada Proses Pembengkokkan Sudut Mesin Bending.” Jurnal Integrasi 8(2): 88–92.
Nugrowibowo, Setyo, and Moh Ririn Rosyidi. 2023. “Pengendalian Kualitas Produk Aluminium Alloy Wheel Dengan Metode Seven Tools Dan PDCA.” 06(9).
Pengendalian, Analisis, Mutu Pada, Proses Produksi, Menggunakan Seven, Tools Dalam, Mencapai Zero Defect, Lisa Melvi Ginting, et al. 2022. “RODA : Jurnal Pendidikan Dan Teknologi Otomotif.” 2(1): 1–6.
Priyana, F.A., N.E. Setijogiarto, and C.D. Widiawaty. 2024. “Analisis Pengendalian Kualitas Menggunakan Pdca Dan Seven Pada Pressure Vessel D-101.” : 70–121.
Setiawan, Reza, Rieval Ade Putra, and Vera Pangni Fahriani. 2020. “Simulasi Proses Bending Arm Rear Brake Dengan Variasi Kecepatan Pembebanan Terhadap Stress Material Menggunakan Ansys.” Barometer 5(2): 261–66. doi:10.35261/barometer.v5i2.3819.
Simon Tatag Panggalih, Barleyan, Totok Yuliarto, and Tri Ngudi Wiyatno. 2025. “Penerapan Metode PDCA Menggunakan Seventools & 5W+1H Pada Kualitas Produksi Pematangan Buah Pisang Di CV. XYZ.” 4(2): 3040–53.
Sukarman, Choirul Anwar, Nana Rahdiana, Khoirudin, and Anwar Ilmar Ramadhan. 2020. “Analisis Pengaruh Radius Dies Terhadap Springback Logam Lembaran Stainless-Steel Pada Proses Bending Hidrolik V-Die.” Junal Teknologi 12(2).
Suseno, Pangki. 2023. “PENINGKATAN KUALITAS PRODUK PAKAIAN DI PT XYZ DENGAN.” 17(1).
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