Perbandingan Kekerasan dan Kekuatan Tekan Paduan Cu – Sn 6% Hasil Proses Metalurgi Serbuk dan Sand Casting

Authors

  • Totok Suwanda Universitas Muhammadiyah Yogyakarta
  • Muh Budi Nur Rahman Universitas Muhammadiyah Yogyakarta
  • Deny Fajrur Ramdani Universitas Muhammadiyah Yogyakarta

DOI:

https://doi.org/10.18196/st.v11i2.767

Keywords:

sand casting, powder metallurgy, porosity, hardness, compressive strength

Abstract

Metal production by sand casting and powder metallurgy indicates the advantage of metal process technology. Bearing materials must have hardness and compressive strength properties to withstand wear and pressure load. Material porosity provides the space for lubricant. The lubrication will decrease the friction and keep temperature low. Low friction and low temperature will increase the life time of bearing. The goal of this research is to compare the hardness, compressive strength, macrostructure and microstructure between Cu-Sn 6% alloy produced by sand casting and by powder metallurgy. During sand casting process, the metal was melted in the furnace and then poured in to the sand mold, whilst in the powder metallurgy process; the metal powder was compacted in the metal mould and then heated to a temperature below its melting point (sintering process). In this research, the powder was compacted at 200 MPa and then sintered at 800° C for 45 minutes. The observation of the microstructure showed that the Cu-Sn 6%  alloy produced by powder metallurgy possessed more porositythan produced by sand casting. The sand casting process produced the Cu-Sn 6% alloy with Brinell Hardness Number (BHN) of 47.97 kgf/mm2 and compressive strength of 680.8 MPa. The powder metallurgy process produced the Cu-Sn 6% alloy with Brinell Hardness Number (BHN) of 27.08 kgf/mm2 and compressive strength of 944.4 MPa.

Downloads

How to Cite

Suwanda, T., Rahman, M. B. N., & Ramdani, D. F. (2016). Perbandingan Kekerasan dan Kekuatan Tekan Paduan Cu – Sn 6% Hasil Proses Metalurgi Serbuk dan Sand Casting. Semesta Teknika, 11(2), 191–198. https://doi.org/10.18196/st.v11i2.767

Issue

Vol. 11 No. 2 (2008): NOVEMBER 2008

Section

Articles

License


Semesta Teknika is licensed under a Creative Commons Attribution 4.0 International License.

Authors who publish with this journal agree to the following terms:

  • Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  • Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  • Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).