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All Journal Jurnal Teknologi JURNAL POLI-TEKNOLOGI
Rosidi Rosidi
Politeknik Negeri Jakarta
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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PERANCANGAN MESIN PEMBUKA KALENG AEROSOL UNTUK KATEGORI LIMBAH BAHAN BERBAHAYA DAN BERACUN (B3) Agri Suwandi; Azid Rizqi Al Afghani; Dede Lia Zariatin; Rosidi Rosidi
Jurnal Teknologi Vol 13, No 2 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.2.115-128

Abstract

Limbah adalah sisa produksi skala industri dan rumah tangga.  Salah satu contoh limbah adalah limbah bahan berbahaya dan beracun. Limbah ini adalah sisa dari usaha atau kegiatan yang mengandung bahan berbahaya dan beracun yang sifatnya, konsentrasinya, dan jumlahnya dapat mencemarkan lingkungan hidup serta makhluk hidup lain, kaleng aerosol termasuk ke dalam kategori limbah B3 ini. Kaleng aerosol jika dibuang begitu saja dapat mengakibatkan pencemaran lingkungan, sehingga dibutuhkan teknik pengelolaan khusus untuk mengatasinya. Salah satu solusi penanganan limbah kaleng aerosol adalah membuat teknologi atau mesin yang dapat membuka kaleng tersebut agar aman untuk dimanfaatkan kembali. Metode perancangan yang digunakan adalah metode Pahl & Beitz dalam melakukan perancangan mesin pembuka kaleng limbah bahan berbahaya dan beracun. Tahap awal merancang adalah dengan mengidentifikasi permasalahan yang ada, kemudian melakukan pengembangan dan merencanakan beberapa konsep sampai terpilih satu konsep yang tepat dan sesuai kebutuhan. Berdasarkan hasil perancangan dan perhitungan, spesifikasi mesin ini menggunakan motor listrik 1,5 HP dengan kecepatan putar 1000 RPM yang telah direduksi oleh gearbox 1:20 untuk menggerakkan batang engkol yang mendorong kaleng aerosol tersebut ke arah pisau pemotong untuk membuka bagian atas dan bawah kaleng, sehingga dapat dimanfaatkan kembali.
ANALISA VARIASI KUAT ARUS ELEKTRODA E6013 TERHADAP SAMBUNGAN LAS PADA PELAT BAJA UNTUK TABUNG GAS 3 KG Rosidi Rosidi; Budi Yuwono; Darius Yuhas
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2341

Abstract

The quality of the welding results is influenced by the qualified welder, the appropriate type of connection, the type of welding, and the electrode. Standard electrode AWS E 6013 with trademark Nikko Steel Welding Elektodes, NK 68 with φ 2.6 mm. The type of camp used is SNI standard 1452-2007 for 3 kg LPG tube. Specimens were subjected to tensile testing, impact toughness, hardness testing, curvature testing, microstructure with current variations of 50 A and 70 A of both types of electrodes used. Welding by SMAW method with circular welding at 3 kg of gas tube blank from JIS G 3116 SG 295 materials. From the test result will be known maximum tensile strength, impact toughness, hardness, curve strength, macro and microstructure. And by comparing the samples of SNI, non SNI and samples from both types of Nikko Steel and NK 68 electrodes, there are differences in mechanical and microstructure characteristics that will significantly affect the toughness of the welding results. 
ANALISA KEKUATAN WELDING REPAIR BAJA AISI 420 DENGAN METODA GMAW Cecep Slamet Abadi; Rosidi Rosidi; Idrus Assagaf
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2396

Abstract

Welding technology is used because besides being easy to use, it can also reduce costs so it is cheaper. Especially for welding repair. From the welding repair the extent to which the strength of GMAW welds can repair components from the molded plastic mold room made of AISI 420 stainless steel. Repair of the print room components using deposit welding is tested using tensile strength and hardness as realization of resistance when holding the rate of liquid plastic entering the print room by 25 to 40 MPa, depending on the plastic viscosity, the precision of the mold and the filling level of the print room. Deposition welding method as a welding repair can affect a procedure to be able to produce a component that is safe and capable of being used in accordance with the provisions. The welding process used is reverse polarity GMAW DC with 125 A current and ER 70 S welding wire diameter 1.2 mm. Test material AISI 420. Tests carried out were tensile test, impact test and hardness test in weld metal, HAZ and base metal. From the Charpy impact test and tensile test obtained the value of welding strength which is close to the strength of the complete object, which is equal to 65%. The energy absorbed by the impact test object with GMAW welding is 5.4 Joule while for the whole test object is 8.1 Joule. The welding tensile strength is 520 MPa compared to the tensile tensile strength of 820 MPa.
Co-Authors Assagaf, Idrus Azid Rizqi Al Afghani Budi Yuwono Cecep Slamet Abadi Darius Yuhas Zariatin, D.L