Article Per Year (5 Year)
p-Index From 2021 - 2026
3.914
P-Index
This Author published in this journals
All Journal Rotasi Rekayasa Mesin Jurnal Ilmiah Universitas Batanghari Jambi Jurnal Teknologi Terapan DEVICE Abdi Masya Mechanical Engineering for Society and Industry Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Automotive Experiences Creative Research in Engineering (CERIE) Teknika ETAM: Jurnal Pengabdian kepada Masyarakat Jurnal Suara Pengabdian 45 Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri
Atmoko, Nugroho Tri
Sekolah Tinggi Teknologi Warga Surakarta
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry 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 Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

Published : 26 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Rotasi

 1 
Analisa Jenis Fluida Pendingin Proses Quenching Pada Besi Cor Terhadap Kekerasan dan Struktur Mikro Atmoko, Nugroho Tri; Margono, Margono; Priyambodo, Bambang Hari
ROTASI Vol 23, No 3 (2021): VOLUME 23, NOMOR 3, JULI 2021
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.23.3.26-30

Abstract

Proses quenching merupakan salah satu metode perlakuan panas terhadap logam dengan cara memanaskan material pada fasa austenit, kemudian didinginkan secara cepat. Tujuan dari proses quenching pada penelitian ini adalah untuk meningkatkan sifat mekanik berupa kekerasan  dan sifat fisis berupa struktur material. Furnace digunakan dalam penelitian ini sebagai alat untuk memanaskan material. Suhu furnace diatur pada temperatur 8500C (fase austenit) serta waktu tahan selama 20 menit, dilanjutkan didinginkan secara cepat menggunakan media pendingin berupa air, air es dan oli. Karakteristik mikro dilakukan untuk mengetahui struktur dan ukuran butir serta untuk mengetahui sifat mekanik dilakukan uji kekerasan vickers, sesuai standar ASTM E92. Hasil menunjukkan bahwa struktur material yang terlihat berupa pearlit, ferrit dan cementit. Struktur dan ukuran butir tersebut cenderung lebih kecil dikarenakan efek pendinginan yang cepat. Sifat mekanik berupa kekerasan juga mengalami peningkatan. Kekerasan tertinggi didapat ketika media pendingin yang digunakan air es yakni 766.6 HV atau meningkat sekitar 350% dibandingkan dengan besi cor non treatment. Meningkatnya tingkat kekerasan besi cor dikarenakan ukuran butir menjadi kecil sesuai dengan hukum Hall petch dimana semakin kecil ukuran butir maka kekerasan semakin meningkat.
Investigasi pembuatan mikropartikel carbon menggunakan mesin high energy ball milling (HEBM) model shaker mill Nugroho Tri Tri Atmoko; Bambang Margono; Fariyono Fariyono; Wahyu Purno Satrio
ROTASI Vol 25, No 3 (2023): VOLUME 25, NOMOR 3, JULI 2023
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.25.3.59-63

Abstract

The challenge of human civilization is to produce materials that will perform better in the future, so it is necessary to develop new materials. In this research, the process of making carbon particles will be carried out using the high-energy ball milling (HEBM) with shaker mill model. The effect of the shaker mill process on carbon particles for 120 hours on size and morphology will be analyzed through a series of tests. The research began by preparing carbon powder that had been ground and passed through mesh 200. The carbon particles that had passed through mesh 200 were pounded into steel balls (high energy ball milling) using the shaker mill model. A particle size analysis (PSA) test was carried out to measure the dimensions of the carbon particles. In contrast, a scanning electron microscopy (SEM) test was carried out to see the shape and morphology of the carbon particles. The results show that the carbon particles measured before the shaker mill process are 2526.03nm, while the dimensions of the carbon particles will decrease to 608.43 when the shaker is milled for 120 hours. Meanwhile, the shape and morphology of the carbon particles do not appear to be homogeneous. This indicates that the shaker mill process on carbon particles for 120 hours has not reached nano dimensions and is homogeneous.
Co-Authors Agung Supriyanto, Agung Agus Jamaldi Alfarizi, Tito Alfarizie, Tito Amarulloh Amarulloh Amiruddin Amiruddin Arif Hidayat Purwono Awan, Sang Alang Bagas Wicaksono Bagas Wicaksono, Bagas Bagus Nugroho, Taufik Bagus Radiant Utomo Bagus Radiant Utomo Bambang Hari Priyambodo Bambang Margono Burhanudin Burhanudin Chamim, Moch. David Setiadhi Denis Marchant EDI SARWONO Elkana Bilak Lopo Emanuel Budi Raharjo Fahlovi, Oldy Fajar Yuniarta Fariyono Fariyono Fatimah Nur Hidayah Ganjar Kurnia Haikal Haikal Haikal Hendi Lilih Wijayanto Hendra Setyawan, Hendra Jamaldi, Agus Kadex Widhy Wirakusuma Kadriadi Kadriadi Karminto Karminto Kasih, Tota Pirdo Margono Margono Margono Margono Martinus Heru Palmiyanto Natanael Teofilus Riyadi Pisti Cikarge, Ghia Priyanto, Kaleb Putra Tegar Permata, Septian Radik Syamsul Erfan Rizqi Ilmal Yaqin Sang Alang Awan Septian Putra Tegar Permata Subiyati Subiyati Suhartoyo Suhartoyo Suhartoyo Suhartoyo, Suhartoyo Suryono, Edy Suseno, Ibnu Taufik Bagus Nugroho Teofilus Riyadi, Natanael Titok, Febrian Tri Widodo Besar Riyadi Wahyu Purno Satrio Wijayanto, Hendi Xiaomeng Zhu Yanti Pasmawati Yuniarta, Fajar