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All Journal DINAMIKA Jurnal Ilmiah Teknik Mesin Infotekmesin STORAGE: Jurnal Ilmiah Teknik dan Ilmu Komputer
Simon Parekke
Akademi Teknik Soroako
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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ANALISIS PENGARUH VARIASI TEMPERATUR BAJA AISI 1018 TERHADAP KEKERASAN DENGAN METODE JOMINY TEST Harjuma Harjuma; Simon Parekke
Dinamika : Jurnal Ilmiah Teknik Mesin Vol 10, No 2 (2019)
Publisher : Jurusan Teknik Mesin, Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.329 KB) | DOI: 10.33772/djitm.v10i2.6954

Abstract

Hardenability of steel is an important guide to determine the pattern of heat behavior and the nature of the material to be heat-treated in the production of components. One way to determine steel hardenability is by using Jominy test method. This study aims to determine the hardness of the AISI 1018 steel by varying temperature in heat treatment. Hardness test was conducted using the Rockwell method (HRA) by varying the heating temperature to 700 °C, 800 °C and 900 °C. The material used was AISI 1018 steel and water as a cooling medium. The standard for making specimens refers to the ASTM A 255 Jominy Test with the following dimension: length of specimen 101.6 mm x diameter of specimen 25.4 mm. Electric heating furnace was used to heat the specimen according to the desired temperature. After a 15-minute holding time, the specimen was then cooled in clean water as cooling medium using Jominy test apparatus. Each specimen was cooled by spraying clean water onto it for 10 minutes. The results showed that the maximum hardness value occurred at the end of the specimen closest to the center of the spray and that the hardness decreased as the distance from the tip of the specimen increased. The results also showed that the higher the given heating temperature, the higher the hardness value of the specimens. However, the increase in temperature does not have a significant effect. This was probably the result of improper selection of materials where the heat treatment requires that the specimen contains more than 0,3% carbon. The specimen was too long on the air when released from the furnace. Hardness of test results obtained at temperature at a heating temperature of 700 ° C the average hardness value was 48.72 kg / mm2, at a temperature heating of 800 ° C the average hardness value was 47.44 kg / mm2 and at a heating temperature of 900 ° C the average hardness value was 48.12 kg/mm2. 
Rancang Bangun Mesin Pengerolan Pipa 1,5 Inci Menggunakan Motor Listrik Sebagai Penggerak dan Dongkrak 2 Ton Sebagai Penekan Pipa Sirama Sirama; Simon Parekke
Infotekmesin Vol 12 No 2 (2021): Infotekmesin: Juli 2021
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v12i2.730

Abstract

The 1.5 inch pipe rolling machine utilizes an electric motor to drive the pipe holder and a 2ton jack as a pipe press. Although the roller machine is widely used in conventional workshops by using human power, it causes the pipe rolling time to be long and the machine user gets tired quickly. This is due to lack of resources to think about developing and improving the performance of these machines. Therefore, the focus of this research is the design of a 1.5 inch pipe rolling machine using an electric motor as a drive and a 2 ton jack as a pipe press. This research aims to produce a design and machine for 1.5 inch pipe rolling and to help accelerate the pipe rolling process and reduce worker fatigue. This pipe rolling machine consists of several components, namely, the engine frame, electric motor, gearbox reducer, chain-sprocket, shaft, pipe drive wheel, hydraulic pump and so on. The working process of this machine begins by preparing a 1.5 inch x 3 meter pipe then the pipe is positioned above the drive wheel, lowers the upper pressure wheel to the desired depth with a 2ton jack power, turn on the electric motor and press the button to roll the pipe back and forth and so on. up to pipe roll size as needed. The stages in making this machine are design, detailed drawing, manufacturing process, quality control, assembly and testing, data retrieval and data analysis. The research resulted in drawings of the design and manufacture of the machine, the calculation of the rotational speed of the machine for optimal rolling obtained 20.46 rpm and an average pipe rolling time of 6.80 minutes for one workpiece. This machine can still be optimized by adding a workpiece movement limiter when rolling.
RANCANG BANGUN MESIN PEMIPIL JAGUNG KAPASITAS HINGGA 180 KG/JAM DENGAN MENGGUNAKAN MOTOR BAKAR Simon Parekke; Didit Yantony; Abdul Tahir; Edi Rande Padang
STORAGE: Jurnal Ilmiah Teknik dan Ilmu Komputer Vol. 2 No. 1 (2023): Februari
Publisher : Yayasan Literasi Sains Indonesia

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Abstract

Peningkatan produksi jagung di kabupaten Luwu Timur mengalami peningkatan dan dibarengi dengan perluasan lahan sebesar 13.584 Ha. Para petani dihadapkan pada persoalan bagaimana memipil hasil panennya, terutama petani yang kurang mampu karena mereka tidak memiliki mesin pemipil jagung. Tujuan dari rancang bangun mesin pemipil jagung ini adalah untuk mendapatkan mesin pemipil jagung yang dapat meringankan para petani dalam memipil hasil panennya. Metode perancangan dan pembuatan mesin pemipil jangung ini meliputi identifikasi lapangan, studi pustaka dan disain. Mesin ini memiliki dimensi 1400 x 600 x 1400 menggunakan penggerak motor bakar dengan sistem transmisi pulley dan v-belt. Pulley 1 (80 mm), pulley 2 (160 mm) dan v-belt panjang 1180,99 mm, jumlah mata pemipil 28 buah dan di lengkapi dengan kipas sebagai alat bantu pemisah antara biji jagung dengan ampasnya, Hasil penelitian menunjukkan bahwa kecepatan putar mesin berpengaruh kepada hasil pemipilan jagung. Pada pengujian dengan putaran 1900 rpm dapat memipil jagung 4 kg selama 0,40 menit dan menghasilkan 2,9 kg.
Co-Authors Abdul Tahir Didit Yantony Edi Rande Padang Harjuma Harjuma Sirama Sirama