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All Journal Jurnal Teknologi Bahan dan Barang Teknik Jurnal Riset Teknologi Industri
Harry P Limbong
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Penelitian Korelasi Pengujian Cod Dan Warna Limbah Cair Pabrik Kelapa Sawit Harry P Limbong
Jurnal Riset Teknologi Industri Vol 4 No 8 Desember 2010
Publisher : Balai Riset dan Standardisasi Industri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (789.884 KB) | DOI: 10.26578/jrti.v4i8.1466

Abstract

Research  on the correlation  test  for chemical  oxygen demand and  the colors in liquid waste of oil palm plant has been conducted through three steps, they are the first lest on some liquid waste oil palm plant, test on some variations of diluting sampel and lest on the aplication of the results of the research. The test on COD and colors in liquid waste of oil palm plant show the existence of corretetion which is marked by the linear equation which is oblained and the close correlation (R).  The linear equation and correlation (R) are:  Y = 0.19 X  + 0,20 ; R = 0,99 for inlet sample and Y =  0,19 X + 0,14; R = 0,99 for outtet sample The  aplicaton  if  the  results  of  fhe research  also shows  the  difference between result of the test on COD and COD of the color test are very small. at the average of 4, 1%. 
PENGEMBANGAN PROSES SQUEEZE CASTING PADUAN TEMBAGA BERILIUM UNTUK PRODUK KONDUKTIVITAS LISTRIK Harry P Limbong
Jurnal Teknologi Bahan dan Barang Teknik Vol 1, No 1 (2011)
Publisher : Center for Material and Technical Product

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (343.41 KB) | DOI: 10.37209/jtbbt.v1i1.11

Abstract

Penelitian ini bertujuan untuk mengetahui sekaligus memperbaiki metoda pengecoran konvensional yang ada selama ini, dimana dengan metoda lama hasil dari pengerjaan pengecoran pada umumnya mengalami cacat dikarenakan terbentuknya pori pada permukaan specimen, sehingga mempengaruhi kekuatan bahan. Dengan adanya kegiatan ini kiranya dapat memberikan penguasaan teknologi proses pengecoran selain proses konvensional yaitu proses pengecoran squeeze casting dimana bahan yang digunakan adalah paduan tembaga berillium dengan memvariasikan tekanan. Dari percobaan yang telah dilakukan ternyata  proses squeeze casting memberikan hasil coran yang lebih baik dibandingkan sistem pengecoran biasadimana cacat yang dihasilkan dapat diminimalisasi.Kata kunci : Pengecoran dengan tekanan, hasil coran, Tembaga-Berillium, kekerasan Vickers
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