Pengembangan Tool Cetakan Sand Casting Pada Bearing Housing Di Pt.Xyz Menggunakan Metode Quality Function Deployment (Qfd)
Abstract
Proses sand casting komponen Bearing Housing di PT XYZ masih menggunakan pattern dan core box berbahan kayu yang memiliki umur pakai terbatas (sekitar 1,5 tahun) serta menunjukkan ketidakstabilan dimensi akibat pembengkakan, keausan, dan kerusakan permukaan. Kondisi tersebut menyebabkan ketidakstabilan cetakan pasir, reject produk, serta frekuensi rework sebesar 8–10% yang berdampak pada penurunan efisiensi dan peningkatan biaya produksi. Hal ini menunjukkan bahwa tooling eksisting belum mampu memenuhi kebutuhan pengguna secara konsisten selama siklus pemakaian. Penelitian ini bertujuan untuk mengembangkan desain tooling cetakan sand casting dengan performa yang lebih baik melalui penerjemahan kebutuhan pengguna ke dalam parameter teknis desain serta mengevaluasi kelayakan ekonominya. Metode Quality Function Deployment (QFD) digunakan untuk memetakan kebutuhan pengguna melalui matriks House of Quality yang diintegrasikan dengan kerangka Product Development Process (PDP). Rancangan tooling usulan divalidasi melalui simulasi teknik untuk memastikan kestabilan struktural dan geometrik, serta dievaluasi secara ekonomi menggunakan pendekatan Total Cost of Ownership (TCO). Hasil penelitian menunjukkan bahwa tooling usulan mampu meningkatkan kestabilan cetakan pasir dan kualitas produk dibandingkan tooling eksisting, serta memberikan efisiensi biaya jangka panjang.
Kata kunci: sand casting, tooling, pattern, core box, Quality Function Deployment, House of Quality, Product Development Process, Total Cost of Ownership.
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