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All Journal Jurnal Ilmiah Teknik Mesin
Novi Laura Indrayani
Program Studi Teknik Mesin, Fakultas Teknik, Universitas Islam “45” Bekasi
Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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ANALISIS PENGARUH JARAK KAMPUH HASIL PENGELASAN BAJA SS400 TERHADAP SIFAT MEKANIK MATERIAL MENGGUNAKAN METODE GMAW Novi Laura Indrayani; Herry Oktadinata; Ito Suteja
Jurnal Ilmiah Teknik Mesin Vol 8 No 2 (2020): JURNAL ILMIAH TEKNIK MESIN
Publisher : Universitas Islam 45 Bekasi, Fakultas Teknik, Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/jitm.v8i2.2183

Abstract

Welding techniques have been used extensively in the construction field because welding techniques are a simpler method in the process of connecting steel than using bolts or rivets. Factors that influence the quality of welding results include distance of the seam. The seam distance can affect the increase in heat input value because the wider the seam distance the more filler metal will be used. The purpose of this study was to determine how the effect of variations in the distance of the seam to the mechanical properties of SS400 steel welding material using the GMAW method. SS400 steel welding welding position 2G with variations in the root gap distance of 0 mm, 2 mm and 4 mm using the GMAW method with a type of protective gas 82% Ar + 18% CO2 and ESAB ER70S-6 type welding wire. Single v butt joint type with a seam angle of 60o and 12 mm thick material. In this study several tests were conducted including distortion testing, non-destructive test, tensile, chemical composition, hardness and microstructure observation. The highest distortion test results obtained at a root gap of 4 mm seam, non-destructive test results showed no welding defects in the upper surface of the weld, the optimal tensile testing results were obtained on a sample root gap of 2 mm with a tensile strength value of 413 MPa and fractures that occurred in the base area metal. The highest hardness test results were obtained at a sample root gap of 0 mm ap with a value of 235 HV and the lowest hardness obtained at a root gap of 4 mm with a value of 209 HV.
ANALISIS PENGARUH TEMPERATUR DAN WAKTU PELAPISAN NIKEL PLATING BAJA KARBON S45C TERHADAP KETEBALAN DAN KEKERASAN LAPISAN ELECTROLESS NICKEL PLATING Novi Laura Indrayani; Mohammad Taufik Hidayattullah; Geri Setiadi
Jurnal Ilmiah Teknik Mesin Vol 9 No 1 (2021): JURNAL ILMIAH TEKNIK MESIN
Publisher : Universitas Islam 45 Bekasi, Fakultas Teknik, Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/jitm.v9i1.2479

Abstract

Electroless plating merupakan pelapisan tanpa listrik proses ini merupakan tahap akhir dengan meningkatkan sifat seperti daya tahan korosi, daya temperatur tinggi. Temperatur yang di gunakan dalam proses electroless plating nikel 95°C sehingga mengakibatkan tangki cepat terplating sehingga konsentrasi nikel cepat menurun. Penelitian ini bertujuan mengetahui temperatur dan waktu pelapisan yang ideal untuk mendapatkan hasil ketebalan dan kekerasan yang standar. Sehingga penelitian ini bisa mengurangi tangki terplating dan memerpanjang umur konsentrasi nikel. Proses penelitian electroless plating ini menggunakan temperatur 80°C, 85°C, dan 90°C dengan variasi waktu 30 menit, 40 menit, dan 50 menit. Analisis menggunakan pengukuran ketebalan lapisan menggunakan Mesin X-Ray dan pengukuran kekerasan lapisan plating menggunakan Mesin Hardness vickers. Hasil yang di dapat dari pencarian temperatur dan waktu yang ideal dengan menggunakan temperatur 85°C dan waktu 30 menit yaitu dengan tebal 0,008 mm atau 8 µm dan di panaskan dengan suhu 330°C dengan waktu konstan 60 menit yaitu dengan kekerasan 800 HV. Dan hasil ketebalan lapisan yang baik dapat dilihat pada pengujian struktur micro dengan menggunakan media mikroskop keyence.
Co-Authors Geri Setiadi Herry Oktadinata Ito Suteja Mohammad Taufik Hidayattullah