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All Journal Rekayasa Mesin Sinergi Jurnal Ilmiah Teknik Mesin Journal of Mechanical Engineering Science and Technology Jurnal Teknik Mesin (JTM) Jurnal Surya Masyarakat DIKEMAS (Jurnal Pengabdian Kepada Masyarakat) JPKMI (Jurnal Pengabdian Kepada Masyarakat Indonesia) Jurnal Surya Masyarakat International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Jurnal Pengabdian pada Masyarakat Ilmu Pengetahuan dan Teknologi Terintegrasi Dulang: Jurnal Pengabdian Kepada Masyarakat Jurnal Gear : Energi, Perancangan, Manufaktur & Material
Rudianto Raharjo
Jurusan Teknik Mesin Fakultas Teknik Universitas Brawijaya
Religion Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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ANALISIS PULLEY BERTINGKAT HASIL SAND-CASTING PROCESS TERHADAP SIMULASI PENGECORAN LOGAM Raharjo, Rudianto; Wahyudiansyah, Adly; Purnama, Alyasa Huda; Ahdiyat, Ayi Akhmad; Anindito, Baghdad Daiva Alkautsar; Pratiwi, Erika Ramadani; Machfudlon, Muhammad Ali; Aziz, Muhammad Ibrahim
Jurnal Ilmiah Teknik Mesin FEMA Vol. 3 No. 2 (2025)
Publisher : FT UNILA

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Abstract

Pulley merupakan elemen mesin yang berfungsi mentransmisikan daya antar poros melalui sabuk serta banyak digunakan pada mesin industri maupun mesin motor. Selain meneruskan gerak rotasi, pulley juga dapat mengubah arah gaya dan memindahkan beban. Pulley bertingkat umumnya diproduksi melalui proses pengecoran logam menggunakan cetakan pasir (sand casting), dengan aluminium sebagai bahan yang paling sering digunakan. Metode sand casting dipilih karena lebih ekonomis dibandingkan metode manufaktur lainnya, namun proses ini memiliki banyak variabel yang dapat memengaruhi kualitas hasil coran. Untuk meminimalkan cacat, diperlukan optimasi proses melalui analisis dan simulasi. Penelitian ini melakukan simulasi pengecoran menggunakan perangkat lunak Altair Inspire Cast 2021.2 guna membandingkan hasil simulasi dengan hasil pengecoran aktual dan mengidentifikasi jenis cacat yang muncul. Hasil penelitian menunjukkan adanya kesamaan cacat pada kedua metode, terutama porositas, shrinkage, dan mold erosion. Namun, benda coran aktual juga mengalami cacat tambahan seperti gas defect, shift, misrun, core miring, swell, sand inclusion, serta cacat fin. Persamaan cacat utama antara produk aktual dan simulasi meliputi porositas, mold erosion, gas defect, dan shrinkage. Temuan ini menunjukkan bahwa simulasi dapat menjadi alat prediksi yang efektif untuk mengidentifikasi potensi cacat sebelum proses pengecoran dilakukan, sehingga dapat membantu meningkatkan kualitas produk dan efisiensi proses manufaktur.
The effect of different levels of cleanness of the pre-coat surface on adhesion and corrosion performance of A36 steel with epoxy coating Widodo, Teguh Dwi; Setyarini, Putu Hadi; Sugiarto, Sugiarto; Raharjo, Rudianto; Bintarto, Redi; Darmadi, Djarot Bangun; Sagita, Sagita
SINERGI Vol 30, No 1 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2026.1.010

Abstract

Adhesion and corrosion protection are the main properties of epoxy coatings, especially when applied to materials exposed to harsh environments, such as chloride-containing water. However, the adhesion and corrosion protection of coatings are affected by surface preparation, especially the cleanliness of the substrate surface prior to coating application. Choosing the proper surface preparation can optimize the coating's capabilities. This research aims to evaluate the Effect of blasting process cleanliness on coating performance on the steel surface. The novel approach is to correlate NACE surface cleanliness standards with coating performance. In this study, A36 steel is used. The cleaning procedure uses an air-blasting process with an 8-bar nozzle pressure and at least 5 minutes of spraying time to meet the desired National Association of Corrosion Engineers (NACE) standard. The abrasive utilizing garnet with a mesh of 30-40. Meanwhile, coating is performed at room temperature using the airless spray method with a 90° angle, a distance of 25 cm from the substrate and the nozzle, and a nozzle speed of 300 mm/s. The gap in the coating process between the first and second layers is 24 hours. The results showed that surface preparation influenced the coating's pullout strength and corrosion performance. The pullout strength test demonstrated that NACE 2 provided the highest pullout strength. Likewise, corrosion rate testing showed that surface preparation affects the corrosion rate, with NACE 1 providing the lowest corrosion rate (the best corrosion protection). 
Co-Authors Abdullah, Harnan Malik Agus Budiarto Ahdiyat, Ayi Akhmad Akbar Triatmojo, Kurnia Anindito Purnowidodo Anindito, Baghdad Daiva Alkautsar Ardiansyah Darmawan, Mohamad Ari Wahjudi Arif Wahyudiono Arman, Rifqi Azhar, Andika Aziz, Muhammad Ibrahim Bayu Rahayudi D, Dhimas Kaukabi Darmadi, Djarot Bangun Dewi, Francisca Gayuh Utami Dwi H Sulistyarini Dwi Kristanto Erwin Sulistyo Fadilah, Risky Femiana Gapsari MF Fikrul Akbar Alamsyah Firas, Alfian Gayuh Utami Dewi, Francisca Habibulfalah, Endi Hidayat , Wahyu Ihin Solihin Kelvin, Michael Kusumaningsih, Haslinda Laila Sari, Shintya Lilis Yuliati Ma’arif, Moh. Syamsul Machfudlon, Muhammad Ali Maftuch Maftuch Masykur , M Alfin Mega Nur Sasongko Moch. Syamsul Ma'arif Musyaffa' Ma'shum, Yafi' Nugroho, Arief Budi Nur M. F. Dinia Nurkholis Hamidi Prasetyo Pangestu, Andika Pratama, Gesha Denny Pratiwi, Erika Ramadani Prayudi , Makrusy Eko Pribadi , Aries Fajar Purnama, Alyasa Huda Putri, Debri Harynia Putu Hadi Setyarini Qoid A Fadhlurrahman Redi Bintarto, Redi Runi Asmaranto Safa S Istafada Sagita, Sagita Saputra, Muhamad Hendra Setiawan, Yustiza Rahadian Siswoyo, Redi Cipto Slamet Thohari Sugiarto S Sugiono Sugiono Suwarso, Wahyu Handoyo Tamtomo, Bagas Teguh Dwi Widodo Wahyudiansyah, Adly Wibisono, Aryasatya Rafli