Penerapan metode lean manufacturing dalam minimasi manufacturing lead time produk cover 15b54j1621 di PT. Karya Paduyasa
P T. Karya Paduyasa merupakan perusahaan manufaktur yang bergerak dalam bidang pembuatan komponen alat berat dan komponen automotive. Permasalahan yang muncul adalah target produksi yang tidak tercapai karena adanya pemborosan pada perusahaan berupa waste of transportation, defect, dan overprocessing. Waste of defect berupa kecacatan produk cover 15B54J1621 sebesar 0.52%, hal ini sangat bertentangan dengan target perusahaan dalam menoleransi persentase produk cacat yaitu sebesar 0% atau zero defect. Penelitian ini bertujuan untuk meminimasi manufacturing lead time produk cover 15B54J1621 dengan cara mengurangi kecacatan dan pemborosan lainnya dengan menerapkan metode Lean Manufacturing, Lean Six Sigma dan metode DMAIC yang berfokus pada cara menghilangkan atau mengurangi waste. Langkah awal penelitian ini adalah membuat current value stream mapping dilanjutkan dengan process activity mapping untuk mengidentifikasi waste yang terjadi. Menghitung manufacturing lead time dan process cycle efficiency. Didapatkan nilai process cycle efficiency sebelum perbaikan sebesar 78%. Waste of defect menggunakan metode lean six sigma dan metode DMAIC. Tahapannya yaitu define, method, analyze, improve, dan control. Penyebab waste of transportation dan overprocessing dianalisa menggunakan diagram ishikawa. Hasil data yang sudah diolah kemudian dijadikan dasar dalam rancangan perbaikan untuk meminimasi manufacturing lead time dan meningkatkan process cycle efficiency Tahap control mengevaluasi hasil implementasi dimana didapatkan kenaikan nilai PCE menjadi 79%.
P T. Karya Paduyasa is a manufacturing company engaged in the manufacture of heavy equipment components and automotive components. The problems is a production target not achieved due to waste that arise in the company are waste of transportation, defects, and overprocessing. Waste of defect in the form of product defects cover 15B54J1621 is 0.52%, this is very contrary to the company's target in tolerating the percentage of defective products, which is 0% or zero defects. This study aims to minimize the manufacturing lead time of the product cover 15B54J1621 by reducing defects and other waste by applying the Lean Manufacturing method, Lean Six Sigma and the DMAIC method which focuses on how to eliminate or reduce waste. The initial step of this research is to make a current value stream mapping followed by a process activity mapping to identify the waste that occurs. Calculating manufacturing lead time and process cycle efficiency. The value of the process cycle efficiency before the repair was obtained by 78%. Waste of defect using lean six sigma method and DMAIC method. The stages are define, method, analyze, improve, and control. The causes of waste of transportation and overprocessing were analyzed using the Ishikawa diagram. The results of the data that have been processed are then used as the basis for the improvement design to minimize manufacturing lead time and improve process cycle efficiency. The control phase evaluates the implementation results where the PCE value increases to 79%.