AN ANALYSIS OF CASTING TEMPERATURE EFFECT ON THE HARDNESS AND TENSILE STRENGTH OF ALLOY OF AL-19.6Si-2.5Cu, 2.3Zn (RECYCLE) FROM THE RESULT OF EVAPORATIVE CASTING

  • Rudi Siswanto Universitas Lambung Mangkurat
Keywords: Evaporative casting, Al-19,6Si-2,5Cu, 2,3Zn (Scrap), hardness, tensile strength

Abstract

Aluminum rongsokan has considerable potential as an engineering material for making
an engine element. During this time aluminum rongsok still not utilized by manufacturing
industry as product. One technology to make products from Al rongsok is metal foundry
technology. Al rongsok can be recycled and potentially produce various component
products. This study aims to determine the hardness and tensile strength of evaporative
foundry results. The furnace for smelting uses the furnace krusibel with charcoal wood
fuel. Material for casting used Al-19,6Si-2,5Cu- 2,3Zn rongsok alloy. The foundry method
used is evaporative casting. Styrofoam as a pattern dumped in the sand print. This
method will produce castings that match the pattern of styrofoam formed. Al alloy is
melted in crusible furnace then poured with variation of casting temperature 650, 660,
670 and 680 oC. The results showed that the pour temperature had an effect on the value
of hardness and tensile strength. At temperatures above 650 oC, the value of the hardness
decreases with the increase of pouring temperature. At temperatures above 650 oC the
tensile stress increases with the increase in pouring temperature.

Downloads

Download data is not yet available.

References

ASM International, 2004, “ASM Metal Handbook Vol.9”
Barone, M. R., Caulk, D. A., 2005, A Foam Ablation Model for LostFoam
Casting of Aluminum,International Journal of Heat and Mass Transfer,
Vol. 48, pp. 4132–4149.
Behm, S.U., Gunter, K.L. and Sutherland, J.W., 2003, An Investigation into The
Effect of Process Parameter Setting on Air Emission Characteristics in
The Lost Foam Casting Process, American Foundry Society.
Bichler, L., Ravindran, C., and Machin A., 2003. Chalengges In Lost Foam
Casting of AZ91 alloy, Material Science Forum Vols.426-432. Pp. 533-
538
Campbell, J., 2003, “Casting 2nd Edition”. Butterworth - Heinemann. pp. 74
Karim Ivan Junaidy Abdul, 2012, Pengaruh Temperatur Tuang serta Ukuran
Ayakan Pasir terhadap Cacat Porositas dan Blowhole Coran Al-Si7 yang
Dicor dengan Metode Evaporative, Proceedings Seminar Nasional
Energi erbarukan & Produksi Bersih 2012 Universitas Lampung
(UNILA), Bandar Lampung, ISSN 0016087403, hal. 71-73
Kim, K., and Lee, K., 2005, Effect of Pro cess Parameters on Porosity in
Aluminum Lost Foam Process, Journal Material Science Technology,
Vol. 21 No.5, pp. 681-685.
Kumar, S., Kumar, P., Shan, H. S., 2007, Effect of evaporative pattern casting
process parameters on the surface roughness of Al–7% Si alloy castings,
Journal of Materials Processing Technology, Vol. 182, pp. 615–623.
Lal, S., Khan, R. H., 1998, Current status of vacuum sealed molding process,
Indian Foundry Journal, Vol. 27, pp.12–18.
Monroe, R.M., 1992, Expandable Patterns Casting, American Foundryman’s
Society Inc., p.84.
Sand, S., Shivkumar, S., 2003, Influence of coating thickness and sand fineness
on mold filling in the lost foam casting process, Journal of Materials
Science, Vol. 38, pp. 667– 673.
Shin S. R., Lee Z. H., 2004. “Hidrogen Gas Pick -Up of Alloy Melt During Lost
Foam Casting”. Journal Of Material Science Vol. 39 1536-1569.
Siswanto Rudi, 2011, Pengaruh Temperatur dan Waktu Peleburan Pengecoran
Tuang Terhadap Struktur Mikro Paduan Al-21%Mg, Jurnal
Ilmiah Media SainS Kopertis Wil. XI, ISSN : 2085-3548, Volume 3,
Nomor 1, Hal. 1-116
Siswanto Rudi, 2011, The Influence of Temperature and Melting Duration Pour
Casting to Density and Hardness of Al-21%Mg Alloys, Jurnal Ilmiah
Suara Teknik, Fakultas Teknik Universitas Muhammadiyah
Pontianak, ISSN : 2086-1826, Volume 2, Nomor 1, Hal. 1-67
Siswanto Rudi, 2015, Analisis struktur mikro paduan Al-19,6Si-2,5Cu,2,3Zn
(scrap) hasil pengecoran evaporative, Proceeding Seminar Nasional
Tahunan Teknik Mesin XIV Tahun 2015 (SNTTM XIV), Mat. 44
Surdia, T. Dan Chijiwa, K., 1996, “Teknik Pengecoran Logam”, Cetakan
Ketujuh, Pradnya Paramita, Jakarta.
Sutiyoko, 2013, Metode pengecoran lost foam menjawab tantangan dunia
Industri pengecoran logam, Jurnal Foundry Vol. 3 No. 2 Oktober ISSN :
2087-2259
Wijoyo, Achmad Nurhidayat, Osep Teja Sulammunajat, 2012, “Kajian
Komprehensif Struktur Mikro dan Kekerasan Terhadap Paduan Al-7,1Si-
1,5Cu hasil Pengecoran Dengan Metode Evaporative”, Prosiding SNST
ke-3 Tahun 2012 Fakultas Teknik Universitas Wahid Hasyim Semarang,
ISBN 978-602-99334-1-3, hal. C.40-C.45
Zhao, Q., Gustafson, T.W., Hoover, M., Flemings, M. C., 2003, Fold formation
in the Lost Foam Aluminum Process, in: S.K. Das (Ed.), TMS,
Warrendale, pp. 121–132.
Published
2018-01-18