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All Journal Jurnal Teknik Mesin, Industri, Elektro dan Informatika Jurnal Kendali Teknik dan Sains Nusantara Journal of Multidisciplinary Science
I Nyoman Lokajaya
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Strategi Penjadwalan Penggantian Roll pada Mesin Rolling Mill di PT. Z Martina De Pores Rio Gani; I Nyoman Lokajaya
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 2 No. 2 (2023): Juni : JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v2i2.1936

Abstract

PT. Z merupakan salah satu perusahaan yang memproduksi pelat baja yang berlokasi di Surabaya, Jawa Timur. Proses produksi di PT. Z memanfaatkan sepenuhnya mesin yang berjalan sepanjang waktu. Hambatan dalam pembuatan pelat baja adalah bahwa sering ada kerusakan yang disebabkan oleh manusia, material, dan mesin. Seringkali, kerusakan mesin pada faktor mesin menghentikan jalanya proses produksi. Kerusakan pada mesin produksi mencegah proses produksi bekerja dengan lancar. Waktu henti yang tinggi sering disebabkan oleh perawatan dan penggantian komponen pada bagian-bagian mesin tertentu. Akibatnya, peralatan membutuhkan perbaikan atau pemeliharaan (maintenance). Diantara semua mesin produksi, mesin rolling mill merupakan mesin dengan angka downtime tertinggi. Komponen pada mesin rolling mill yang menyebabkan downtime paling tinggi sebesar 12.851 menit yakni komponen roll. Studi ini bermaksud membuat rencana penjadwalan penggantian roll pada mesin rolling mill. Metodelogi yang diterapkan dalam penelitian ini adalah Preventive Maintenance dengan menghitung keandalannya dan membuat jadwal penggantian roll. Hasil penelitian menunjukan bahwa rata-rata penggantian roll setiap 6 hari dengan keandalan 63,21%, dan rata-rata waktu proses penggantian roll adalah 131 menit.
Strategi Penjadwalan Penggantian Roll Pada Mesin Rolling Mill Di PT. Z Martina De Pores Rio Gani; I Nyoman Lokajaya
Jurnal Kendali Teknik dan Sains Vol. 1 No. 3 (2023): Juli : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i3.582

Abstract

PT. Z is one of the companies that produces steel plates located in Surabaya, East Java. Production process at PT. The Z fully uses machines that operate 24 hours a day. The bottleneck in the steel plate production process is that there are often breakdowns caused by people, machines, and materials. In the engine factor, there is often a machine breakdown that makes production stop. The smooth running of the production process is disrupted due to damage to the production machine. High downtime often occurs due to repairs and replacement of components in certain machine parts. Therefore the machine needs maintenance / maintenance (maintenance). Among all production machines, rolling mill machines are the machines with the highest downtime rates. The components in the rolling mill machine that cause the highest downtime of 12,851 minutes are roll components. This study intends to make a scheduling plan for roll replacement on rolling mill machines. The methodology used in this study is Preventive Maintenance by calculating its reliability and making a schedule for replacing and maintaining the machine. The results showed that the average roll replacement every 6 days with 63.21% reliability, and the average roll replacement process time was 131 minutes.
Analisis Preventive Mantenance Pada Komponen Mesin Finger Joint Untuk Mengurangi Downtime Pada PT. Romi Violeta Sidoarjo Nur Moh. Danang Andrian; I Nyoman Lokajaya
Jurnal Kendali Teknik dan Sains Vol. 1 No. 3 (2023): Juli : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i3.592

Abstract

PT. Romi Violeta is a furniture company engaged in the production of rattan and wood products for the global market. The problem that often occurs is that the Finger Joint machine often experiences damage to the engine components. Therefore, the objectives of this research are to identify critical components in the Finger Joint machine, develop a maintenance scheduling for the machine's components, and compare the maintenance costs before and after implementing the scheduling. The analysis revealed that the Hydraulic component has a cumulative value of 40%, followed by the Cutter component with a cumulative value of 34.4%, and the Air Hose component with a cumulative value of 5.6%. Consequently, a preventive maintenance schedule was determined, with the Hydraulic component requiring maintenance every 31 days, the Cutter component every 36 days, and the Air Hose component every 207 days. This resulted in a reduction in maintenance costs from the previous amount of Rp.5,200,000 to Rp.1,210,847.
Pengendalian Kualitas Benang Plastik Dengan Pendekatan Metode Statistical Process Control : Studi Kasus : PK. Rosella Baru Mohammad Ilham; I Nyoman Lokajaya
Jurnal Kendali Teknik dan Sains Vol. 1 No. 3 (2023): Juli : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i3.593

Abstract

PK. Rosella Baru is a company operating in the plastic sack industry. In the production process of plastic sacks, there are several stages, including the production of plastic thread. The company still encounters a significant number of defects in the plastic thread, exceeding 2%, resulting in obstacles in the weaving process of the sacks and suboptimal production output. The research utilizes the Statistical Process Control method to identify solutions for quality control of the plastic thread products at PK. Rosella Baru. Based on the Pareto diagram, the most dominant defect is found in the unevenness of thread rolls, accounting for 43.3% of the defects. The control chart analysis shows that there are samples exceeding the upper control limit (UCL) in samples 1 and 9, and data exceeding the lower control limit (LCL) in samples 3 and 6. The cause and effect diagram identifies five factors: labor, machine, material, method, and environment. The most dominant cause is the lack of training for the workforce and insufficient maintenance of the machines, resulting in defective plastic thread. Therefore, the suggested solution is to perform regular machine maintenance, provide training to the workforce, and pay attention to machine settings and the quality of raw materials used.
Analisis Perawatan Komponen Chamber Box Pada Mesin Laminating Departemen Printing Produksi Kemasan Plastik (Studi Kasus:Pt.Daesang Ingredients Indonesia) Ridhwan Dwi W; I Nyoman Lokajaya
Jurnal Kendali Teknik dan Sains Vol. 1 No. 3 (2023): Juli : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i3.606

Abstract

Miwon Indonesia is one of the companies that started as a company in 1973, the company finally changed the company's name with PT. Daesang Ingredients Indonesia The research method used is Preventive Maintenance, in this study researchers analyzed the time between laminating machine damage to the Chamber Box Heater component, the data taken was the Laminating machine down time data in July – December 2022 The results of analysis and data processing showed that the level of component reliability, namely for the chamber box heater component of 0.5892 occurred on day 5. And while the press roll rewinder component obtained a reliability level of 0.5925 on day 7. And the results of the calculation of costs before preventive maintenance are obtained at a cost of Rp. 47,953,572 per 6 months and costs after preventive maintenance are obtained at Rp. 29,677,876 per 6 months. With a difference of Rp.18,285,696. From the results of preventive maintenance costs, it can reduce maintenance costs at PT. Daesang Ingredients Indonesia than before preventive maintenance calculations are carried out.
Analisis Pemeliharaan Spring Load Cell Pada Mesin Roto Packer Di PT. Semen Indonesia (Persero) Tbk Yvonne Christy Julyandini; I Nyoman Lokajaya
Jurnal Kendali Teknik dan Sains Vol. 1 No. 3 (2023): Juli : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i3.643

Abstract

PT. Semen Indonesia (Persero) Tbk is a company that produces cement and runs the production process 24 hours a day. The company uses Roto Packer in its packaging process. In carrying out machine maintenance efforts, the company has implemented a maintenance system, namely preventive maintenance. However, even though preventive maintenance has been carried out, the company still experiences downtime on the spring load cell components. Therefore, it is necessary to carry out an analysis in order to determine the time between breakdowns, breakdown times, and arrange optimal maintenance schedules for spring load cell components. This study uses the Reliability Centered Maintenance (RCM) method with the Kolmogorov-Smirnov test to develop preventive maintenance activities that have been scheduled by the company. The results obtained, for the spring load cell component, component replacement must be carried out every 4 days with a replacement time of 49 minutes and a reliability of 39.87%.
Pengendalian Kualitas Dalam Upaya Menurunkan Cacat Produk Pada Proses Spot UV (Studi Kasus PT. Trijaya Grafika Solutindo) Muhammad Dawud Afriansyah; I Nyoman Lokajaya
Nusantara Journal of Multidisciplinary Science Vol. 1 No. 5 (2023): NJMS - Desember 2023
Publisher : PT. Inovasi Teknologi Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Trijaya Grafika Solutindo adalah perusahaan jasa yang berkecimpung dalam industri grafika. Dalam proses spot uv tingkay cacat produk masih tinggi, jenis cacat ada 2 yaitu not regist dan backside spot. Dalam kegiatan produksinya, perusahaan selalu berupaya agar mengasilkan produk yang baik dan menekan kecacatan produk yang tinggi dengan menetapkan standar toleransi 2% dari jumlah produksi. Akan tetapi, kenyataan dilapangan menunjukkan bahwa tingkat kecacatan masih melebihi standart toleransi yang ditetapkan. Penelitian ini bertujuan untuk mengetahui bagaimana pelaksanaan pengendalian kualitas menggunakan metode PDCA yang bertujuan untuk menurunkan tingkat kecacatan yang ada secara terus menerus. Hasil pengolahan dan analisis data menunjukkan bahwa penyebab dominan terjadinya cacat tersebut disebabkan oleh faktor material yaitu kurangnya kategori pada saat penerimaan material. Beberapa rekomendasi usulan perbaikan adalah melakukan pengawasan yang ketat pada bagian proses produksi dan menambahkan beberapa kategori saat melakukan penerimaan material.
Co-Authors Martina De Pores Rio Gani Mohammad Ilham Muhammad Dawud Afriansyah Nur Moh. Danang Andrian Ridhwan Dwi W Yvonne Christy Julyandini