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Dede Ardi Rajab
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Optimasi Parameter Proses Powder Coating pada Plat Electro Galvanized Sukarman Sukarman; Ilmi Ramanda Sitorus; Budi Aribowo; Dede Ardi Rajab; Yadi Heryadi
SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan) Vol 1 (2019)
Publisher : SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (860.365 KB)

Abstract

Makalah ini menyajikan ikhtisar optimasi parameter proses powder coating pada logam electro-galvanized (SECC-AF JIS G 3313). Ketebalan lapisan painting merupakan factor penting yang menentukan dalam proteksi logam terhadap karat. Pada proses powder coating ketebalam merukapan salah satu variable yang sulit dikontrol konsistensinya. Penelitian ini menggunakan material Ral 7016 epoxy polyester dengan ketebalan yang disyaratkan antara 70 -100 micron. Sementara itu, pada proses aplikasi masih ditemukan powder-paint yang lebih tipis dari standar. Penelitian ini bertujuan untuk mendapatkan nilai ketebalan powder coating optimum dari kombinasi parameter proses yang ditetapkan. Eksperimen dilakukan dengan menggunakan array orthogonal L12 Taguchi dengan parameter, program, jarak, metode aplikasi, dan jumlah layer. Metode optimasi ini telah berhasil melakukan perbaikan. Ketebalan rata-rata lapisan paint powder tertinggi mencapai 76,8 micron. Untuk parameter yang diberikan, jarak merupakan parameter yang memberikan dampak tertinggi terhadap ketebalan dengan rasio S/N sebesar 5,114. Hasil ini diharapkan bias digunakan untuk mengembangkan powder coating pada aspek-sapek signifikan lainya.
ANALISIS PERPINDAHAN PANAS TUNGKU PADA TUNNEL KILN UNTUK PROSES PEMBAKARAN BATA MERAH DI PT XYZ Irwan Suriaman; Uus Supriatna; M. Rizky Anugrah; Rohman; Dede Ardi Rajab; Yadi Heryadi; T.B.U. Adi Subekhi; Wawan
Jurnal Teknologika Vol 13 No 1 (2023): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v13i1.259

Abstract

Ceramics are widely used by people in industries for various purposes, for example to make cups and tiles. Currently ceramics are widely used in various industrial raw materials. Ceramics are used as materials for making spark plugs, electrical insulators, and raw materials for printing tools. The ceramics industry is energy intensive in utilizing electrical energy. The amount of energy absorption affects the amount of costs that must be incurred by companies for energy consumption. To reduce costs used by ceramic companies during production, the use of energy is a way to increase the efficiency of the tunnel kiln. Therefore, based on these problems, research was carried out to analyze the data resulting from measurements of the large flow rate of heat transfer by conduction in the thickness of the wall, the amount of heat loss lost by convection on the outside of the wall, and the amount of loss in production costs incurred due to heat loss. This aims to obtain a solution that saves electrical energy used in the production of ceramics. So it was obtained that the highest conduction was in the top firing zone of the core from burning red bricks with heat dissipation reaching 829.73 Watts. Meanwhile, the heat lost at a distance of 50 cm and at a distance of 100 cm is the top firing zone which has the greatest heat loss of up to 0.1 MW compared to the other zones. The preheating zone reaches 5 kW and the cooling zone reaches 16 kW.
UJI EKSPERIMENTAL DAN ANALISIS PERPINDAHAN PANAS PADA SERPENTINE CHANNEL UNTUK PENDINGIN PANEL SURYA MENGGUNAKAN FLUIDA NANO Ina, Ina afriani; Amri Abdulah; Dede ardi rajab; Dani, Muhamad; Nur Alam, Deden; Jaenudin
Jurnal Teknologika Vol 14 No 1 (2024): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v14i1.381

Abstract

The potential of solar energy in Indonesia is quite large as a renewable energy source, usually called solar panels or photovoltaic (PV) technology as a device capable of converting solar radiation into electrical energy. When solar panels operate, only about 15% of solar radiation is converted into electrical energy, while the rest is converted into heat. The intensity of solar radiation and the temperature of the surrounding air affect the voltage and current produced by solar cells. This condition requires a device that can regulate the temperature state of the solar panel. This study was conducted to overcome the heat problem in solar panels through optimizing the thermal properties of the cooling fluid by adding nano-sized SEM/EDS-tested particles to the W/EG base fluid, which is commonly called nanofluids, then making serpentine channels as a heat exchanger was also carried out. The experimental test process was carried out with a flow rate variation of 1 to 3 LPM and the inlet temperature was kept at 35˚C. The results showed that the highest cooling fluid flow rate was the most optimum condition. The Reynolds number shows that the heat transfer coefficient increases by 1011.72 W/m◦K, 1321.72 W/m◦K, and 2070.39 W/m◦K, respectively. The Nusselt number tends to increase as the Reynolds number of the nanofluid increases. An increase in Nusselt number indicates an increase in heat transfer coefficient, while Reynolds number indicates laminar flow of the coolant. Similarly, the pressure drop increases with increasing flow rate.
Performance analysis of vacuum forming machines for the plastic material acryolonitrile butadiene styrene (abs) Nugraha, Aji Nugraha; Dede Ardi Rajab; Irwan Suriaman
Jurnal Teknologika Vol 14 No 2 (2024): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v14i2.412

Abstract

Plastic is a polymer material (usually an organic material) that has a high molecular weight in solid form which, when heated slowly, becomes soft and can be shaped an shaped as desired. The aim of this research is to build a vacuum forming machine. This will enable us to package a variety of products used in the home and factory industries and design a vacuum forming machine to meet the needs of the household industry. The operating principle of thermoforming and vacuum forming is used by most small and medium business for various types of product packaging. Thermoforming is a forming process where the properties of plastic fil change to become soft and flexible after going through a heating process and then using preassure or suction which adjust the shape of the mold. The vacuum forming machine consists of 3x3 hollow iron, angle iron, pallet board, 1inch iron pipe, and 2inch iron pipe. The result of the manufacture of this vacuum forming machine include several temperature stages using acryolonitrile butadiene styrene (abs) plastic material 1.5mm, square wood is used for the mold, with a heating temprature of 60-90℃, Maximum test result were obtained at a temperature of 90°C with a vacuum time 120 second.
Co-Authors Amri Abdulah Budi Aribowo Dani, Muhamad Ilmi Ramanda Sitorus Ina, Ina afriani Irwan Suriaman Irwan Suriaman Jaenudin M. Rizky Anugrah Nugraha, Aji Nugraha Nur Alam, Deden Rohman Sukarman Sukarman T.B.U. Adi Subekhi Uus Supriatna Wawan Yadi Heryadi