Analysis of Quality Control for Wing King Doors Using the Statistical Quality Control - Six Sigma Method at PT Wadja Karya Dunia Pati
DOI:
https://doi.org/10.65310/kqgq9146Keywords:
Defect, Galvalume, Six Sigma, SQC, Wing King Door.Abstract
This study aims to analyze the quality control of Wing King Door products at PT Wadja Karya Dunia Pati using Statistical Quality Control (SQC) and Six Sigma methods. Data was collected during January 2024 with a total production of 10,880 units, and 1,162 defective products were identified. The main types of defects included broken rivets, scratches, dents, and gaps, with broken rivets being the dominant defect. Analysis was conducted using SQC tools such as check sheets, histograms, p-charts, Pareto diagrams, and fishbone diagrams. The results indicate that the production process is not yet fully stable, as there is data outside the control limits. A DPMO value of 208,571.4 with a sigma level of 2.7 indicates that process quality remains low. The causes of defects include human factors, machinery, methods, environment, and materials. Improvement proposals were made using the 5W+1H approach, including operator training, machine maintenance, SOP evaluation, workplace organization, and material control. The implementation of these improvements is expected to reduce defect rates and continuously improve product quality.
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Ahmad, S., Hakim, C. B., Ridwan, A., Firmansyah, N. A., Hana, F. M., & Muadzah, M. (2025). Product Quality Control Analysis Using the Six Sigma Method PT. XYZ. Metode: Jurnal Teknik Industri, 11(1), 36-50. https://doi.org/10.33506/mt.v11i1.4228
Alzoubi, H. M., In'airat, M., & Ahmed, G. (2022). Investigating the impact of total quality management practices and Six Sigma processes to enhance the quality and reduce the cost of quality: the case of Dubai. International journal of business excellence, 27(1), 94-109. https://doi.org/10.1504/IJBEX.2022.123036
Azahra, A. D., & Putri, D. N. (2023). Analisis penerapan sistem manajemen ISO 9001:2015 di sekolah dasar. Journal of Information Systems and Management, 2(3), 86–96.
Bagaskoro, A. F. (2024). Penerapan Metode Six Sigma dan Failure Mode And Effect Analysis (FMEA) untuk menganalisis Pengendalian Kualitas Pada Kelompok Kerja Buffing Panel Up Dept. Painting (Studi Kasus: PT. Yamaha Indonesia) (Doctoral dissertation, Universitas Islam Indonesia).
Basri, H., Yulian Ma, M., & Malihah, L. (2023). Pengaruh kualitas pelayanan dan harga terhadap kepuasan konsumen (Studi toko ponsel Sahabat Selluler Martapura). Jurnal Cendekia Ilmiah, 3(1).
Darmawan, M. R., Rizqi, A. W., & Kurniawan, M. D. (2022). Analisis pengendalian kualitas produk tempe dengan metode statistical quality control (SQC) di CV. Aderina. 19(22), 295–300.
Hu, M., Wang, J., Yang, H., Zang, S., Gao, T., Zeng, J., & Yang, F. (2025). The Application of Six Sigma to Assess the Analytical Performance of Plasma Proteins and Design a Risk‐Based Statistical Quality Control Strategy: A Multicenter Study. Journal of Clinical Laboratory Analysis, 39(16), e70080. https://doi.org/10.1002/jcla.70080
Montgomery, D. C. (2020). Introduction to statistical quality control. John wiley & sons.
Prasmita, L., & Caesaron, T. (2024). Minimasi waste motion menggunakan metode 5S pada produksi konsentrat kopi XYZ dengan pendekatan lean manufacturing. 7(2), 102–112.
Pratiwi, E., Moektiwibowo, H., & Indramawan, D. (n.d.). Pengendalian kualitas proses produksi obat tablet dengan menggunakan metode six sigma di PT MDF.
Purnawan Gunawan, & Wibowo, D. I. P. (2014). Pengaruh penambahan serat galvalum pada beton ringan dengan teknologi foam terhadap kuat lentur, toughness, dan stiffness. 2(2), 229–236.
Purwanto, H. (2017). Analisis efisiensi konstruksi rangka.
Rahmayanti, A., & Setyanto, N. W. (2024). STRATEGI MENINGKATKAN KUALITAS PRODUK PINTU KAYU MENGGUNAKAN METODE SIX SIGMA PADA PT INTEGRA GROUP, SIDOARJO. Jurnal Rekayasa Sistem dan Manajemen Industri, 2(11), 1244-1254.
Saputra, M. A. (2023). Desain Eksperimen Dalam Pengendalian Kualitas Produk Wing King Door Eco Dengan Metode Taguchi Pada Pt Wadja Karya Dunia. INDUSTRIKRISNA, 12(2), 55-67. https://doi.org/10.61488/industrikrisna.v12i2.339
Sari, I. P., Hazidar, A. H., Basri, M., Ramadhani, F., & Manurung, A. A. (2023). Penerapan palang pintu otomatis jarak jauh berbasis RFID di perumahan. Blend Sains Jurnal Teknik, 2(1), 16–25. https://doi.org/10.56211/blendsains.v2i1.246
Shiyamy, A. F., Rohmat, S., & Sopian, A. (2021). Analisis pengendalian kualitas produk. Jurnal Ilmiah Manajemen, 2(2), 32–45.
Sirine, H., Kurniawati, E. P., Pengajar, S., Ekonomika, F., Bisnis, D., & Salatiga, U. (2017). Pengendalian kualitas menggunakan metode six sigma (Studi kasus pada PT Diras Concept Sukoharjo). Asian Journal of Innovation and Entrepreneurship, 2(3). http://www.dirasfurniture.com
Srimurni, R. R., Nugraha, W., & Listiani, E. (2023). Analisis Reject Produk Sayap Pesawat Terbang Komponen Ref D-Nose Panel Menggunakan Metode Statistical Quality Control (SQC) di PT XYZ. JUTIN (Jurnal Teknik Industri Terintegrasi), 6(1), 91-100. https://doi.org/10.31004/jutin.v6i1.13678
Supardi, S., & Dharmanto, A. (2020). Analisis statistical quality control pada pengendalian kualitas produk kuliner ayam geprek di BFC Kota Bekasi. JIMFE (Jurnal Ilmiah Manajemen Fakultas Ekonomi), 6(2). https://doi.org/10.34203/jimfe.v6i2.2622
Sya’bani, A., & Herwanto, D. (2024). Analisis Perbaikan Pengendalian Kualitas Produk Pintudengan Menggunakan Metode Six Sigma dan FMEAPada PD. Indah Mulya. Jurnal Serambi Engineering, 9(1), 8191-8197. https://jse.serambimekkah.id/index.php/jse/article/view/59
Westgard, J. O., & Westgard, S. A. (2017). Six sigma quality management system and design of risk-based statistical quality control. Clinics in Laboratory Medicine, 37(1), 85-96.
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Copyright (c) 2026 Amanda Ardita Amelia, Dana Prianjani (Author)
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