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Journal : Jurnal InTent: Jurnal Industri dan Teknologi Terpadu

USULAN PENERAPAN TOTAL PRODUCTIVE MAINTENANCE (TPM) PADA MESIN CONTINUOUS PICKLING LINE (CPL) DI PT. KRAKATAU STEEL (PERSERO) TBK Juniarti, Anita Dyah; Zakaria, Tatan Zakaria; Prasetya, Muhammad Andika
Jurnal Intent: Jurnal Industri dan Teknologi Terpadu Vol 6 No 2 (2023): INDUSTRIAL
Publisher : Prodi Teknik Industri, Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47080/intent.v6i2.3228

Abstract

PT. Krakatau Steel (Persero) Tbk, menjadi salah satu produsen baja di Indonesia. Salah satu produknya adalah Cold Rolled Coil (CRC). Cold Rolled Coil tersebut harus melalui proses pencucian pada Continuous Pickling Line (CPL). Untuk mengatasi hal tersebut perlu diterapkan Total Productive Maintenance (TPM) yang bertujuan untuk meningkatkan efisiensi serta menggunakan teknik Overall Equipment Effectiveness (OEE) untuk mengukur kinerja mesin, dan untuk mencari penyebab ketidakefektifan mesin dilakukan perhitungan Six Big Losses. Berdasarkan perhitungan Overall Equipment Effectiveness di Continuous Pickling Line (CPL) pada tahun 2021 sebesar 32,75 %. Nilai OEE tersebut dipengaruhi oleh kerugian dari analisa Six Big Losses dan dibuatkan Diagram Pareto untuk menjadi acuan perbaikan. Kerugian terbesar adalah Reduce Speed Losses 69,10 % dan Equipment Failure Losses 19,66 %. Lalu dibuatkan Diagram Fishbone untuk disusun rancangan perbaikan dengan 5W+1H dan hasilnya terdapat 14 usulan perbaikan Reduce Speed Losses dan 12 usulan perbaikan Equipment Failure Losses.
ANALISIS PENGENDALIAN KUALITAS PRODUK BAJA TULANGAN SIRIP S36 DENGAN MENGGUNAKAN METODE TAGUCHI PADA QUALITY CONTROL Permana, Fransisco Toebagoes Dias; Wirawati, Sri Mukti; Juniarti, Anita Dyah
Jurnal Intent: Jurnal Industri dan Teknologi Terpadu Vol 7 No 1 (2024): INDUSTRIAL
Publisher : Prodi Teknik Industri, Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47080/intent.v7i1.3403

Abstract

PT. Krakatau Osaka Steel is a company engaged in the manufacturing industry which produces Reinforcement Bar, for the product under study, namely S36, which experienced an increase in product defects with dimensions that did not meet standards. The aim of this research is to determine optimal parameters to reduce product defects in S36 products. This research was conducted using the Taguchi method. The Taguchi method can be used in companies to evaluate a process or product that is not yet efficient so that a process or the results of the product produced can be maximized. The setting parameters used are rolling speed (s) and raw material heating time (s), the standards of which have not yet been determined. Data was collected by conducting parameter experiments and analyzed using Minitab 20 software. Based on the research results, it can be concluded that the most influential parameter is rolling speed and the optimal parameter for defective product results with the largest S/N Ratio value is at level 2 for rolling speed. namely -1.915 with a speed of 50 seconds and level 3 for heating time, namely -2.401 with a heating time of 3000 seconds. So, the optimal improvement proposal is to set parameters of 50 seconds for rolling speed and 3000 seconds for heating time.