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PENGUJIAN KEKUATAN TARIK, KEKERASAN, DAN STRUKTUR MIKRO PRODUK COR PROPELER KUNINGAN

Authors: Hera Setiawan;

PENGUJIAN KEKUATAN TARIK, KEKERASAN, DAN STRUKTUR MIKRO PRODUK COR PROPELER KUNINGAN

Abstract

ABSTRAK Penelitian ini bertujuan untuk menguji kekuatan tarik, kekerasan, dan struktur mikro propeler kapal nelayan tiga sudu dengan material kuningan (brass) produk dari UKM logam di Juana Pati. Proses peleburan logam kuningan dengan dapur crucible menggunakan bahan bakar minyak dan pengecoran dilakukan dengan teknik pasir cetak (sand casting). Pengujian spectrometer digunakan untuk mengetahui komposisi kimia material kuningan. Untuk melihat struktur mikro digunakan mikroskop optik logam dengan perbesaran 200 kali. Pengujian kekerasan digunakan metode Rockwell dengan indentor bola baja diameter 1/16 inchi dengan beban mayor 100 kg (HRB). Mesin servopulser digunakan untuk pengujian kekuatan tarik. Hasil penelitian ini menunjukkan bahwa material merupakan kuningan atau paduan Cu-Zn tipe ?+? dengan kandungan Zn sebesar 46,95% dan titik cair (melting point) sekitar 900o C. Kekerasan material adalah 35,4 HRB dengan tegangan tarik maksimum smax=342 MPa dan regangan e =4,8%. Bentuk dari struktur mikro belum menunjukkan struktur columnar dendrite. Kata kunci: kuningan, propeler, pasir cetak, struktur mikro, kekerasan, tarik.

Related Organizations
Keywords

Technology, T, TA1-2040, Engineering (General). Civil engineering (General)

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    influence
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
gold