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Effect of Heat Treatment and Tempering Process on the Hardness of S55c Steel as A Cutting Blade Material for Plastic Shredding Machines Yudo, Eko; Ariyanto, Ariyanto; Erwansyah, Erwansyah; Suzen, Zaldy Sirwansyah; Sugiyarto, Sugiyarto; Dharta, Yuli; Zulfitriyanto, Zulfitriyanto
Integrated Science Education Journal Vol 7 No 1 (2026): January
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar

Purpose of the study: This study aims to optimize the heat treatment process of S55C medium-carbon steel by examining the combined effects of austenitizing temperature, quenching media, and tempering temperature on impact toughness. Methodology: An experimental approach was employed using quenching and tempering treatments. Quenching was performed at three austenitizing temperatures (950°C, 1000°C, and 1050°C) with three different cooling media—salt water, oil, and seawater—followed by tempering at 100°C, 200°C, 300°C, and 400°C. All heating processes were conducted in an electric furnace. Parameter optimization was carried out using the Taguchi method with an L9 orthogonal array. Mechanical performance was evaluated through Charpy impact testing, and confirmation experiments were conducted to validate the optimal parameter combination. Main Findings: The Taguchi analysis identified the optimal quenching condition at an austenitizing temperature of 1050°C with salt water as the cooling medium, yielding the highest impact toughness. Confirmation tests supported the reliability of this result. Additionally, the tempering process showed that increasing the tempering temperature decreased hardness while significantly improving toughness, indicating effective stress relief and improved ductility in the steel microstructure. Novelty/Originality of this study: The novelty of this study lies in the integrated optimization of quenching temperature and diverse cooling media, including seawater, using the Taguchi method, with a specific focus on toughness rather than hardness alone. This research provides new insights into tailoring heat treatment parameters for S55C steel to achieve superior impact resistance, offering practical guidance for more efficient and application-oriented heat treatment strategies in manufacturing industries.

Pengaruh Parameter Proses Terhadap Kekuatan Tarik Produk 3d Printing Menggunakan Filamen Polylactic Acid (PLA) Buatan R3d Maker Rikky Ardiansyah; Zaldy Sirwansyah Suzen; Erwansyah Erwansyah
Jurnal Indonesia Sosial Teknologi Vol. 2 No. 12 (2021): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Saat ini teknologi di dunia industri manufaktur telah mengalami kemajuan yang sangat pesat salah satunya adalah 3D printing. 3D printing merupakan salah satu teknologi yang mengubah data digital menjadi objek 3D dengan menggunakan proses Additive manufacturing pada saat memproduksi suatu produk. Penelitian ini dilakukan untuk mengetahui pengaruh infill pattern dan nozzle temperature terhadap kekuatan tarik produk 3D printing dengan orientasi sudut pencetakan vertikal sebesar 90° mengggunakan filamen polylactic acid (PLA). Pada penelitian material polylactic acid (PLA) akan dicetak sesuai dengan standar uji tarik ASTM D638-14 Type 4. Variasi parameter proses yang digunakan pada infill pattern berupa lines, cubic, cubic division, quarter cubic, grid, octet, concentric, zig zag, tri hexagon, triangles, gyroid, cross dan cross 3D dan nilai dari nozzle temperature yang digunakan sebesar 205°C, 215°C, dan 225°C. Pada penelitian menunjukan bahwa bahwa infill pattern dan nozzle temperature memiliki pengaruh terhadap kekuatan tarik produk 3D printing dengan orientasi sudut pencetakan vertikal sebesar 0° menggunakan filamen polylactic acid (PLA) Nilai kekuatan tarik tertinggi yang terdapat pada penelitian ini sebesar 42,5 MPa yang menggunakan infill pattern dengan tipe zig zag dan nozzle temperature sebesar 205°C. Sedangkan nilai kekuatan tarik terendah sebesar 30 MPa yang menggunakan infill pattern dengan tipe cross

Evaluation of hardness and dry sliding wear performance of Al/BA-silica sand composites as brake friction materials. Sukanto Sukanto; Erwanto Erwanto; Husman Husman; Erwansyah Erwansyah; Rodika Rodika; Yudi Oktriadi; Eko Yudo; Ardiansyah Ardiansyah
Jurnal Polimesin Vol 24, No 3 (2026): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i3.8952

As many as 70 countries have banned the use of asbestos-based materials because its fine, lightweight fibers are easily inhaled by humans, causing lung cancer, particularly mesothelioma, which can be fatal. This study aims to determine the effect of a silica sand and boiler ash reinforcement alloy on the application of non-asbestos aluminum matrix composite brake pads. This research uses a powder metallurgy method with varying reinforcement weight ratios, namely 8%, 10%, 12%, and 14% by weight. The mixing process is carried out through mechanical alloying using a horizontal ball mill at 90 rpm with a BPR ratio of 10:1. Hot compaction at 300°C was varied at a pressure of 5000-5300 PSI, followed by sintering at 580°C. Density, hardness, and wear were tested using ASTM standards, which were then compared with the brake lining standard SNI-09-0143-1987. Microstructural characterization was performed using SEM to determine the extent of interlocking bonds in the composite. The results showed that the 12wt% composition at 5200 PSI produced the best properties, with a density of 2.121 g/cm³, a hardness of 93.628 HB, and a wear of 0.0193 mm³/Nm. SEM images showed more uniform interlocking bonds compared to other variations. Increasing the compaction pressure was proven to increase density, hardness, and wear resistance. Overall, this study successfully produced environmentally friendly composite brake linings based on Silica Sand Powder and Boiler Ash without using asbestos materials.

Analisis Pengaruh Cutting Speed, Depth of Cut dan Feed Rate CNC Milling Terhadap Kekasaran Permukaan Aluminium 6061 Menggunakan Respons Surface Methodology (RSM) Wahyudi Asri; Yudi Oktriadi; Erwansyah Erwansyah
Jurnal Inovasi Teknologi Terapan Vol. 4 No. 1 (2026): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v4i1.368

The development of modern manufacturing industries demands increased process efficiency and high-precision machining quality. One of the key factors determining product quality is surface roughness, particularly in Aluminum 6061, which is widely used in the automotive and precision manufacturing industries due to its light weight, strength, and corrosion resistance. An improper combination of machining parameters can reduce surface quality and process efficiency. Therefore, this study aims to analyze the effect of cutting speed, depth of cut, and feed rate on the surface roughness of Aluminum 6061 and to determine the optimal parameter combination. The analysis was conducted using the statistical method Response Surface Methodology (RSM). The results show that all three machining parameters significantly affect surface roughness, with the optimal combination obtained at a cutting speed of 70 m/min, feed rate of 318.3 mm/min, and depth of cut of 0.7 mm, producing the lowest surface roughness value of 0.224 µm (Ra).

PENGARUH VARIASI FRAKSI VOLUME DAN LAMA PERLAKUAN NAOH PADA KOMPSIT BERPENGUAT SERAT TEBU DENGAN MATRIKS POLYESTER TERHADAP KEKUATAN TARIK DAN IMPACT sayyid osama; Masdani Masdani; Erwansyah Erwansyah
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Material development is expected to increase efficiency in the field of engineering, judging from the current good material is a material that meets several main standards such as composites. Composite is a material consisting of a mixture of two or more main elements, and composites have a light weight, high strength, corrosion resistance and cheaper price. Presearch aims to find out the effect of variations in volume fraction and length of difference in immersion ofsugarcane fiber using NaOH solution against tensile strength and impact, so that it can be used as potential information about fiber. Sugarcane that can produce a new quality material. The study used variations in volume fractions of 10%, 15% and 20% as well as the length of immersion using NaOH for 30, 60 and 90 minutes. From the tests that have been done, the highest average tensile test value is in the volume fraction of 15% and the length of NaOH treatment of 60 minutes is 36.73MPa and the lowest average value is in the volume fraction of 20% and the length of NaOH treatment is 90 minutes by 21.16 MPa. The maximum average value on the impact test is at a volume fraction of 20% and the length of naOH treatment of 60 minutes is 0.07290 joules / mm², and the average minimum value is in the volume fraction of 10% and the length of naOH treatment is 90 minutes by 0.02849 joules / mm².

PENGARUH VARIASI PARAMETER TERHADAP MATERIAL REMOVAL RATE DAN KEKASARAN PERMUKAAN STAINLESS STEEL 304 PADA PROSES CNC MILLING Dimas putra utama; Eko Yudo; Erwansyah Erwansyah
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Large material removal rate and minimal surface roughness are the desired objectives in the CNC MORI SEIKI MV40–m process with the right process parameters to obtain a large material removal rate response and minimal surface roughness. The parameters used are cut speed, nutritional depth and spindle speed. The experimental design used based on the response surface methodology method in the form of a behnken design box. The experiment was randomized as many as 3 replications to produce more optimal results. The results showed that for parameters that contribute greatly to material removal rate and surface roughness is cutting speed and depth of cut. To obtain a large material removal rate, the cut speed is set at 143.28mm/min and the depth of cut is set at 0.25mm with a yield of 4.694mm3/minute. And to get the minimal surface roughness value, the cut speed is 118.05mm/min and the depth of cut is 0.15mm with a yield of 0.964 μm.

Effect of Heat Treatment and Tempering Process on the Hardness of S55c Steel as A Cutting Blade Material for Plastic Shredding Machines Eko Yudo; Ariyanto Ariyanto; Erwansyah Erwansyah; Zaldy Sirwansyah Suzen; Sugiyarto Sugiyarto; Yuli Dharta; Zulfitriyanto Zulfitriyanto
Integrated Science Education Journal Vol 7 No 1 (2026): January
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/isej.v7.i1.2461

Purpose of the study: This study aims to optimize the heat treatment process of S55C medium-carbon steel by examining the combined effects of austenitizing temperature, quenching media, and tempering temperature on impact toughness. Methodology: An experimental approach was employed using quenching and tempering treatments. Quenching was performed at three austenitizing temperatures (950°C, 1000°C, and 1050°C) with three different cooling media—salt water, oil, and seawater—followed by tempering at 100°C, 200°C, 300°C, and 400°C. All heating processes were conducted in an electric furnace. Parameter optimization was carried out using the Taguchi method with an L9 orthogonal array. Mechanical performance was evaluated through Charpy impact testing, and confirmation experiments were conducted to validate the optimal parameter combination. Main Findings: The Taguchi analysis identified the optimal quenching condition at an austenitizing temperature of 1050°C with salt water as the cooling medium, yielding the highest impact toughness. Confirmation tests supported the reliability of this result. Additionally, the tempering process showed that increasing the tempering temperature decreased hardness while significantly improving toughness, indicating effective stress relief and improved ductility in the steel microstructure. Novelty/Originality of this study: The novelty of this study lies in the integrated optimization of quenching temperature and diverse cooling media, including seawater, using the Taguchi method, with a specific focus on toughness rather than hardness alone. This research provides new insights into tailoring heat treatment parameters for S55C steel to achieve superior impact resistance, offering practical guidance for more efficient and application-oriented heat treatment strategies in manufacturing industries.

Analisis Hubungan Getaran dan Kekasaran Permukaan pada Proses Pembubutan Baja ST60 Haradat Tahrir Algaza; Robert Napitupulu; Erwansyah Erwansyah
Jurnal Inovasi Teknologi Terapan Vol. 4 No. 2 (2026): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v4i2.426

This study aims to analyze the relationship between vibration and surface roughness in the turning process of ST 60 steel. The turning process was carried out by varying machining parameters, namely depth of cut, spindle speed, and feed rate. An experimental method was employed using eight combinations of cutting parameters. The material used was cylindrical ST 60 steel. Vibration measurements were performed using a VibraPort 80, while surface roughness measurements were conducted using a Mitutoyo SJ-210 surface roughness tester. The results show that workpiece number 1 produced the best surface quality with a surface roughness (Ra) value of 1.42 µm. In contrast, workpiece number 8 exhibited the poorest surface quality with an Ra value of 3.12 µm. The differences in surface quality were influenced by the combination of turning parameters that led to increased vibration during the cutting process. These results indicate that vibration plays an important role in determining the final surface quality. Therefore, proper control of turning parameters is required to minimize vibration and achieve optimal surface quality in the turning of ST 60 steel.

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