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All Journal Rotasi Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Jurnal Teknik Mesin Indonesia Journal of Industrial Engineering Agro Bali: Agricultural Journal Applied Research and Smart Technology (ARSTech)
Sutisna, Nanang Ali
Universitas Presiden
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Computer Science & IT Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Journal : Applied Research and Smart Technology (ARSTech)

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Investigation of heat treatment strategies for improvement of production capacity of coin stamping dies: Investigation of heat treatment strategies for improvement of production capacity of coin stamping dies Nanang Ali Sutisna; Fahyudha Permana
Applied Research and Smart Technology (ARSTech) Vol. 2 No. 2 (2021): Applied Research and Smart Technology
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/arstech.v2i2.405

Abstract

This paper presents a study on the production capacity of stamping dies for minting coins under different heat treatment processes, particularly austenite temperatures, using a vacuum furnace. The specimen material is made from Bohler K340 steel. The first heat treatment strategy in this study includes heating the specimens to a stable austenite temperature at 1080°C, and they are held for 120 minutes and cooled rapidly with gas quenching media with a pressure of 5 bar. Then they are tempered using single tempering at 500°C. The second strategy is similar to the first one, except that the heating temperature is at 1060°C and is tempered using double tempering at 575°C. After the heat treatment process, microstructure observation and hardness testing are carried out. Finally, the production of the die capacity testing on the coining machine is conducted. The results of the specimen surface photographs of the two heat treatment strategies show a significant difference in the microstructure similarly with the hardness value obtained from single tempering was 61.98 HRC and from double tempering was 57.94 HRC. The production capacity test result shows that the average capacity of first and second dies are 101,250 coins and 171,150 coins, respectively. This means that the second dies to exceed the minimum standard production capacity of dies as determined by the Quality Control department, which is 150,000 coins.
Co-Authors Aldhito Hardianto Amin, Grace Budi Sutrisno Fahyudha Permana Farrand, Michael Quinn Filda Rahmiati Harist Fauzi Hariz fauzi M. Fajar Aulia Ansela Akbar Muhammad Irfan Satria Muhammad Munajad Rahman Hakim Rakha Amrillah Fattah Reza Alfarisi Firmansyah Sapto Agus Nowoasto Vicky Gufron Afandi Zairullah Azhar