Wiguna, Rizky Jaya and , Prof. Ir. Agus Dwi Anggono, S.T., M.Eng., Ph.D. (2025) Analisis Akurasi Dimensi, Kekerasan, Dan SEM-EDS Pada Produk Sand Casting Dari Limbah Piston Menggunakan Pola Cetak 3D Printing. Skripsi thesis, Universitas Muhammadiyah Surakarta.
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Abstract
The sand casting method is still widely used in the metal casting industry but faces challenges in dimensional accuracy, hardness, and material quality. One solution applied in this study is the utilization of used vehicle piston waste as a cheaper alternative raw material, along with the use of 3D printing technology to produce casting patterns. This technology allows for rapid printing of complex shapes with consistent results compared to conventional methods. This research aims to analyze dimensional accuracy by comparing the CAD model, 3D-printed patterns, sand casting products, and the final product after the finishing process. In addition, hardness testing and microstructure analysis using SEM-EDS were conducted. The research began with a literature study, preparation of tools and materials, product modeling, creation of casting patterns using 3D printing, the sand casting process, followed by dimensional accuracy, hardness, and SEM-EDS testing. Dimensional accuracy testing based on ISO 2768-1 standards showed that adding a 2.35% tolerance was effective in reducing shrinkage effects, although size deviations were still found in some parts due to mold positioning. The finishing process significantly improved dimensional precision. Rockwell hardness testing showed varying values in each area: 45.8 HRB at the gate, 51.6 HRB in the middle, and 34.9 HRB at the end. These differences occurred due to variations in cooling processes and alloy element distribution. SEM-EDS results at two observation points of the aluminum casting product made from piston waste showed a microstructure dominated by Al phases, with identified intermetallic phases such as Al₃Ni, Al₁₂(Fe,Mn)₃Si, Al₆Si₂O₁₃, along with Si and eutectic Al-Si phases. Energy Dispersive X-ray Spectroscopy (EDS) analysis confirmed the presence of main elements such as Al, Si, Ni, Cu, Fe, Mn, Sn, and C, where high levels of Ni and Cu indicate the contribution of piston waste, while C and O elements are suspected to originate from residues or contamination during casting. Overall, the uneven element distribution resulted from the cooling process in the sand casting method and the characteristics of the piston waste material used.
| Item Type: | Thesis (Skripsi) |
|---|---|
| Uncontrolled Keywords: | Sand Casting, 3D Printing, Fused Deposition Modelling (FDM), Limbah Piston, Uji Akurasi Dimensi, Uji Kekerasan, Uji SEM-EDS. |
| Subjects: | T Technology > T Technology (General) T Technology > TH Building construction T Technology > TI Industrial Engineering T Technology > TI Industrial Engineering > TI1 Assembling T Technology > TI Industrial Engineering > TI2 Production Process T Technology > TJ Mechanical engineering and machinery > Mechine Design T Technology > TJ Mechanical engineering and machinery > Mechine Material T Technology > TJ Mechanical engineering and machinery > Indutry Mechine T Technology > TJ Mechanical engineering and machinery > Otomotive Mechine T Technology > TN Mining engineering. Metallurgy T Technology > TS Manufactures |
| Divisions: | Fakultas Teknik > S1 Teknik Mesin |
| Depositing User: | RIZKY JAYA WIGUNA |
| Date Deposited: | 14 Jul 2025 07:04 |
| Last Modified: | 14 Jul 2025 07:04 |
| URI: | http://eprints.ums.ac.id/id/eprint/135922 |
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