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All Journal COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Journal of Applied Mechanical Engineering and Renewable Energy (JAMERE)
Wajilan, Wajilan
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Pengaruh Temperatur Temperring Pada Proses Heat Treatment Baja ST 60 Dengan Media Pendingin Oli Terhadap Kekerasan Dan Struktur Mikro Wajilan, Wajilan; Hariyanto, Agus; Suwarto, Suwarto
Journal of Applied Mechanical Engineering and Renewable Energy Vol 4 No 2: August 2024
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jamere.v4i2.845

Abstract

Steel that has been hardened is brittle and not suitable for use. Through the tempering process, the hardness and brittleness can be reduced until it meets the requirements for use. Hardness decreases, tensile strength will also decrease while the ductility and toughness of steel will increase. This research aims to determine the effect of tempering temperature in the heat treatment process of ST 60 steel with oil cooling media on hardness distribution and microstructure. The tempering process is carried out at temperatures of 500°C, 400°C, and 300°C with a hardening temperature of 950°C using Mesran SAE 40 Oil Quenching. The method used in this research is experimental research for the specimen is ST 60. The composition test results show that the material The base is included in the medium carbon steel group or medium carbon steel with a carbon content of 0.452%. Hardness testing used a Micro Hardness Tester where the hardness of the tempered specimen was 255.5, and the hardness of the hardened specimen was 189.7 which decreased. Microstructure testing shows that the microstructure of the raw material consists of ferrite and pearlite with balanced crystal shape and size according to the carbon content of 0.452
Troubleshooting Sistem Pengereman Pada Truck quester Ramli, Ismail; Wajilan, Wajilan; Halman, Halman; Amin, Al
COMSERVA : Jurnal Penelitian dan Pengabdian Masyarakat Vol. 4 No. 10 (2025): COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/comserva.v4i10.2945

Abstract

Sistem pengereman adalah sistem yang sangat diperlukan oleh kendaraan termasuk alat berat, baik yang memiliki roda empat ataupun roda lebih dari empat. Sistem pengereman ini memiliki fungsi yang sangat penting untuk menghentikan laju kendaraan, maka kecelakaan akan bisa dihindari. selain itu ketika kita melewati jalan turunan, maka sistem pengereman inilah yang berfungsi untuk melambatkan laju kendaraan, apa bila tidak ada sistem pengereman ini tentu laju kendaraan kita tak bisa dikontrol, maka bisa membayangkan setiap pengendara unit tersebut. tujuan ini adalah untuk mengidentifikasi berbagai jenis kerusakan atau gangguan yang dapat terjadi pada sistem pengereman kendaraan, baik itu pada sistem mekanik, hidrolik, maupun elektronik. Ini meliputi masalah pada kampas rem, cakram rem, kaliper, dan sistem ABS (Anti-lock Braking System). Metode yang dilakukaun Melakukan uji coba kendaraan untuk mengukur kinerja sistem pengereman, seperti uji daya cengkeram dan uji jarak berhenti pada berbagai kondisi. penyebab kerusakan dari sistem rem angin pada truck Quester GKE 280, adalah dengan melakukan pembongkaran slack adjuster.
Co-Authors Agus Hariyanto Amin, Al Halman, Halman Ramli, Ismail Suwarto Suwarto