Implementasi Pendekatan DMAIC untuk Quality Improvement pada Industri Manufaktur Kereta Api
DOI:
https://doi.org/10.30656/intech.v8i2.4734Keywords:
Biaya Kualitas, DMAIC, Kualitas, Manufaktur Kereta Api, Six SigmaAbstract
Tujuan dari penelitian ini adalah untuk mencapai pengurangan biaya dan peningkatan kualitas di Industri Manufaktur Kereta Api dengan menerapkan tahap define, measure, analyze, improve and control (DMAIC) dari Six Sigma. Penerapan metode DMAIC dilakukan di sebuah perusahaan manufaktur komponen kereta api di Indonesia yang memproduksi Single Part Side Frame sebagai objek penelitian. Penyebab dari tingginya cacat produk diketahui pada tahap define. Pada tahap measure, detail dari data lapangan dikumpulkan dan level sigma ditentukan. Penelitian ini menggunakan diagram fishbone untuk mengetahui penyebab permasalahan yang terjadi dan dianalisis sehingga diketahui bahwa permasalahan material terjadi akibat penyimpanan material pada ruang terbuka yang meningkatkan potensi korosi pada material baja ST52. Hasil dari analisis solusi permasalahan menggunakan metode 5W+2H didapatkan solusi untuk perbaikan penyimpanan material dan layout penyimpanan material. Selain itu, perbaikan juga dinilai dari tingkat korosi material pada sebelum dan sesudah perbaikan berdasarkan kandungan kimia material baja ST52. Perbaikan dengan menggunakan pendekatan DMAIC ini perlu dilakukan pada tahap improve agar dapat melakukan perbaikan secara terus menerus. Hasil dari penelitian mampu menurunkan tingkat korosi berdasarkan peningkatan level sigma dari 0,66 menjadi 2,40 dan cost of quality yang signifikan sebesar Rp. 39.100.000.
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