Main Article Content

Abstract

Abstract  In this study, we will discuss the process of casting used aluminum metal. Used aluminum is one of the industrial wastes that can be converted into products using the casting method. This study aims to obtain a good casting material with good hardness values ​​and minimal defects. The research will focus on the results of castings by analyzing the visuals and hardness values ​​of the specimens. The research design is a pre-experimental type of One-Shot Case Study by conducting treatments whose results will be directly observed and analyzed descriptively. The treatment given is to increase the number of risers in recycled aluminum castings. Variations in the number of risers are 1 riser, 2 riser, and 3 riser. Each variation has 3 specimens, so there are 9 specimens in the study. The data from the test results contained a fairly large porosity value for each riser variation. The hardness value that has been tested using the Rockwell hardness tester obtained the highest hardness value occurs in the 2 riser variation, namely 27.69 HRA and the lowest hardness value occurs in the 3 riser variation, namely 21.56 HRA. Thus, for casting used aluminum with a casting pattern as in this study, it is best to use 2 risers.

Keywords

Casting Sand Molding Riser Scrap Alumnium Hardness Test

Article Details

How to Cite
Abadi, Z., Kurniawan, A., Arafat, A., Abdillah, N., & Senthot, D. (2021). Analysis of riser variations in recycled aluminum sand casting on hardness values. INVOTEK: Jurnal Inovasi Vokasional Dan Teknologi, 21(3), 213-220. https://doi.org/https://doi.org/10.24036/invotek.v21i3.940

References

  1. REFERENCES
  2. A.B. Raharja,. Teknik Pengecoran. Yogyakarta: Insan Madani, 2011
  3. R.Khoerur, Pengaruh Model Sistem Saluran Pada Proses Pengecoran Aluminium Daur Ulang Terhadap Struktur Mikro Dan Kekerasan Coran Pulli Diameter 76mm Dengan Cetakan Pasir (Doctoral Dissertation, Universitas Wahid Hasyim). 2012
  4. W. Dhimas, Analisis Riser terhadap Pengecoran Propeller dengan Aluminium Bekas. Teknika STTKD : Jurnal Teknik, Elektronik, Engine Vol 7, No. 1. ISSN 2460-1608 (Media Cetak) 2622-3244 (Media Online). 2021
  5. N. Rachmadi dan Indra Sidharta. 2014. Studi Simulasi Dan Eksperimen PengaruhKetebalan Dinding Exothermic Riser Terhadap Cacat Shrinkage Pada Pengecoran Aluminium 6061 Metode Sand Casting. JURNAL TEKNIK POMITS Vol. 3, No. 2, (2014) ISSN: 2301-9271.
  6. I. Krisnawan H, Kusharjanta, B., & Raharjo, W. P. Pengaruh ukuran riser terhadap cacat penyusutan dan cacat porositas produk cor Aluminium Cetakan Pasir. Mekanika, 10(2). 2012.
  7. S. Khoirrudin, Pengaruh Variasi Jumlah Saluran Masuk Terhadap Struktur Mikro, Kekerasan, Dan Ketangguhan Pengecoran Pulley Paduan Aluminium Al-Si Menggunakan Cetakan Pasir. Jurnal Nosel, 3(1). (Surdia dan Chijiiwa, 2000: 93). 2014
  8. T. Surdia,. dan Kenji C. Teknik Pengecoran Logam. Jakarta: Pradnya Paramita. (2011: 55). 2000.
  9. S. Tjitro & Hartanto, L. S, Pengaruh Modulus Cor Riser Terhadap Cacat Penyusutan Pada Produk Paduan Al-Si. Jurnal Teknik Mesin, 4(2), pp-69. . 2004.
  10. S. Tjitro, Pengaruh Bentuk Riser Terhadap Cacat Penyusutan Produk Cor Aluminium Cetakan Pasir. Jurnal Teknik Mesin, 3(2), pp-41Tjitro (2001: 43). 2001.
  11. B. Kusharjanta & Ariawan, D. Kajian Letak Saluran Masuk (Ingate) Terhadap Cacat Porositas, Kekerasan, dan Ukuran Butir Paduan Aluminium Pada Pengecoran Menggunakan Cetakan Pasir. Mekanika, 10(1). 2011.
  12. T. Surdia. dan S.Saito, Pengetahuan Bahan Teknik. Jakarta: Pradnya Paramita. 2000
  13. L. H. Ashar, Purwanto, H., & Respati, S. M. Analisis Pengaruh Model Sistem Saluran Dengan Pola Styrofoam Terhadap Sifat Fisis Dan Kekerasan Produk Puli Pada Proses Pengecoran Aluminium Daur Ulang. Momentum, 8(1).S.Tirta Atmaja (2006: 44). 2012.
  14. S . Maman. , Haris Budiman dan Engkos Koswara. Proses Uji Dimensi, Uji Kekerasan Dengan Metode Rockwell Dan Uji Komposisi Kimia Pada Cangkul Di Balai Besar Logam Dan Mesin (Bblm) Bandung, 10th Industrial Research workshop and Nasional Seminar. Polban.
  15. F. K. Magdalena, Arif Indro Sultoni. Studi Uji Kekerasan Rockwell Superficial VS Micro Vickers. Jurnal Teknologi Proses dan Inovasi Industri, Vol. 2, No. 2. 2017
  16. https://www.engineersedge.com/hardness_conversion.htm