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Journal : Quantum Teknika

 1 
Gabungan Quenching-Variasi Tekanan Shot peening Terhadap Kekerasan Permukaan dan Struktur Mikro Permukaan Baja S45C Bambang Hari Priyambodo; Margono Margono; Rizqi Ilmal Yaqin
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 4, No 1 (2022): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v4i1.16170

Abstract

The combination of Quenching and Shot peening (SP) heat treatment is rarely carried out, especially the use of this treatment can improve the mechanical properties of medium carbon steel (S45C). This study aims to analyze the microstructure and hardness of S45C steel with the combined effect of Quenching heat treatment with shot peening with variations in compressor air pressure. Commercial S45C steel is quenched with a heating temperature of 910oC and held for 15 minutes. In comparison, the SP process is carried out after the quenching process with variations in air pressure, namely 4, 5, 6, and 7 bar. Analysis of the combined results of Quenching and SP processes using hardness and microstructure. The investigation analysis results obtained specimens with the highest surface hardness in the quenching and SP treatment of 899.44 HV. The impact of SP on the surface up to a distance of 120 m from the surface. The highest hardness was in the Quenching and SP treatment with a pressure of 7 bar. The results of this study are used as parameter contributions in the area of surface treatment and heat treatment of carbon steel to be developed in the automotive industry.
Rekayasa Peningkatan Kekerasan Permukaan Gear Sprocket Sepeda Motor dengan Metode Quenching Variasi Media Pendingin Rauuf Nur Fattah; Sugiyanto Sugiyanto; Bambang Hari Priyambodo; Achmad Nurhidayat; Rizqi Ilmal Yaqin
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 5, No 1 (2023): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v5i1.19418

Abstract

This study used an experimental research method, which is a research method that aims to understand the causal process by treatment and conducting controlled testing on a sample of research subjects. This research uses quantitative methods by taking research data in the form of numbers. The material used in this study is the gear sprocket. A gear sprocket is a motor component that transmits power from the engine to the rear wheels so that the motor can run optimally. The sprocket gear was heat treated at 850 ℃ with a holding time of 20 minutes. The variations of quenching media are mineral water, dromus coolant, and SAE 40 oil. Hardness and microstructure tests were carried out for each specimen to determine the effect of different cooling media on the quenching process. The results of this study indicate the highest specimen hardness value was obtained at 301 HV by immersion in mineral water media. The lowest hardness was obtained at 207 HV with SAE 40 oil media immersion. Meanwhile, the non-treatment material hardness is 150 HV. In this case, there was an increase in the highest hardness of about two times compared to non-treated specimens. Observation of the microstructure shows that the grain size of the mineral water quenching specimens looks smaller than that of the non-treatment models. This phenomenon supports the idea that quenching can increase the surface hardness of the gear sprocket.
Co-Authors A Marsha Alviani Abda Abda Abrori, M. Zaki Latif Ade Hermawan Adian Febriyanto Ahmad Adib Ahmad Arbi Trihatmojo Ahmad Kurniawan Alfakhri Alfakhri Alip, Ahmad Angger Bagus Prasetiyo Anjaska, Riski Aqshal Ilham Fadiga Ariyanto Atmoko, Nugroho Tri Azhim Asyratul Azmi Azhim Asyratul Azmi Azhim Azyratul Azmi Bagas Prakoso Bambang Hari Priyambodo Bambang Hari Priyambodo Bambang Imawan Barokah Bobby Demeianto Bobby Demeianto Bobby Demeianto Bobby Demeianto Boby Wisely Ziliwu Boby Wisely Ziliwu Boby Wisely Ziliwu Darmawan Darmawan Demeianto Bobby Demeianto, Bobby Didit Setyo Pamuji Fajar Miftakhul Rizqy Fauzun Fauzun Fauzun Febi Luthfiani Finali, Asmar Hafiz Ziddin Hamdu Azrawi Daulay Hanafi, Agung Fauzi Henry Iskandar Madyantoro I Gusti Ngurah Agung Satria Prasetya Dharma Yudha I Ketut Suada Iman Pradana A Assagaf Iman Pradana A. Asssagaf Iskandar Musa Iskandar Musa Iwed Mulyani J. Preston Siahaan Juniawan Preston Siahaan Juniawan Preston Siahaan Juniawan Preston Siahaan Juniawan Preston Siahaan Kacuk Cikal Nugroho Kenny Bastian Lagsmana, Tegar M. Subroto Alirejo Margono Margono Mariandri Pasaribu Mega Lazuardi Umar Miftahul Huda Miftakhur Rohmah Mohamad Akmal Muhammad Ali Rozaki Muhammad Noor Asnan Muhammad Nur Arkham Mula Tumpu Mula Tumpu Nasib Sihombing Nirmala Efri Hasibuan Nirmala Efri Hasibuan Nurhidayat Pakpahan, Binsar Maruli Tua Pamaharyani, Luchiandini Ika Perdana Putra Kelana Prabuditya Bhisma Wisnu Wardana Priharanto, Yuniar Endri Pristiansyah, Pristiansyah Rangga Bayu Kusuma Haris Ratih Purnama Sari Rauuf Nur Fattah Reni Laili Rochmad Eko Prasetyaning Utomo Roma Yuli Hutapea Rudi Efendi Santi Yatnikasari Septianda, Devin Siahaan Juniawan Preston Siahaan, Juniawan Preston Sigiet Haryo Pranoto Sigit Haryo Pranoto Sihombing, Nasib Sugeng Slamet Sugiyanto Sugiyanto Suhartoyo Suhartoyo Syauqiy Ridlo Robbiy Taufan Mahendra Tumpu Mula Yanti Pasmawati Yuniar Endri Priharanto Zamri Zamri Zamri