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All Journal ASEAN Journal of Systems Engineering Teknika
Sumeru Yoso
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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STUDY KOMPARASI LOST FOAM DAN KONVENSIONAL CASTING PRODUK DISC BRAKE Sumeru Yoso; Suyitno -
ASEAN Journal of Systems Engineering Vol 2, No 1 (2014): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Disc brake component is a vital component with gray cast iron base material, it’s also fast lasting wearing part, so it has be replaced often. The disc brake replacement component in a local market is being supplied by the small scale local metal casting industries have the same quality as the genuine part.Disc brake making process is utilizing casting method inserting RCS core between drag and coup, than metal molten poured inside mold. The problem of this method is the product result often have gas defect because the gas that occur from the mold in casting process cannot be released perfectly, and then trapped in the metal molten caused by permeability or the gas flow in the green sand mold is not good enough.Ventilating disc brake making is not utilizing evaporative casting method or lost foam casting yet at the moment so it need to be research for the gains and the losses between the casting result using conventional method and lost foam casting method, considering that there’s no research for the disc brake component yet as far.This research will give many benefits to know that the thin Styrofoam pattern construction’s of the disc brake, with quit complicated ventilation would not be strong enough to sustain the dry sand mold on the pattern so it will be collapse earlier before the metal molten filled the cavity from the pattern, but it will make good result if it’s combined with the RCS core using. The time duration of the dry sand mold and the re-using will be faster than the conventional casting which using 2 underside mold or drag and upside mold or coup using the green sand.
ANALISIS KEKUATAN TARIK DAN KEKERASAN BESI COR FC 250 DENGAN PENAMBAHAN 1% KROMIUM SEBAGAI MATERIAL BRAKE SHOE REM TROMOL Hassany, Ibnu Rosyid Al; Yoso, Sumeru; Ridwan, Muhammad Nasir Al
Teknika Vol 9 No 2 (2024): October 2024
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v9i2.376

Abstract

Rem merupakan alat yang memiliki fungsi untuk menurunkan kecepatan atau menghentikan suatu kendaraan. Salah satu jenis rem ialah rem tromol dengan komponen utama tromol (brake drum), kampas rem (brake shoe). Besi cor FC 250 merupakan salah satu material yang digunakan brake shoe, dan pada praktiknya material tersebut kurang mampu menahan beban pengereman yang terjadi. Sehingga pada penelitian dilakukan studi penambahan kromium 1 % pada besi cor FC 250 sebagai upaya untuk meningkatkan kekuatan material tersebut. Bahan penelitian ialah FC 250 yang dicampur dengan kromium 1 %. Spesimen uji diproduksi dengan membuat cetakan pasir berbentuk Y block sesuai standar JIS G 5501. Hasil cor diproses sebagai spesimen uji komposisi, uji kekerasan, dan uji tarik. Spesimen uji tarik dibuat dengan merujuk pada standar JIS Z 2201. Target komposisi kromium pada spesimen hasil cor sekitar 1 %. Besi cor kelabu FC 250 dengan penambahan kromium 1 %, dikatakan layak digunakan sebagai material brake shoe apabila kuat tariknya minimal 357,5 N/mm2. Komposisi FC 250 + Cr 1% terdiri atas C = 3,37 %, Si = 1,84 %, Mn = 0,93 %, P = 0,19 %, S = 0,1%, dan Cr = 0,96%. Penambahan kromium 1 % pada besi cor FC 250 memberikan dampak pada kenaikan nilai kekerasan dan kuat tarik hingga 66,4% dan 38,3 %. Besi cor FC 250 + Cr 1% dapat digunakan sebagai alternatif material brake shoe rem tromol, karena nilai kuat tariknya lebih tinggi daripada tegangan maksimum yang terjadi pada brake shoe.
Co-Authors Hassany, Ibnu Rosyid Al Ridwan, Muhammad Nasir Al Suyitno -