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All Journal JURNAL TEKNIK MESIN Jurnal Rekayasa, Teknologi, dan Sains
Adi Prasetyo
Universitas Malahayati
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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THE EFFECT OF HOLDING TIME ON THE QUENCHING PROCESS IN COOLING WATER CIRCULATED ON AISI STEEL 1045 Fauzi Ibrahim; Adi Prasetyo; Agung Efriyo Hadi; Anang Ansyori
Jurnal Rekayasa Teknologi dan sains Vol 6, No 2 (2022): Jurnal Rekayasa, Teknologi, dan Sains
Publisher : Fakultas Teknik Universitas Malahayati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jrets.v6i2.7055

Abstract

 ABSTRACT Quenching is a material cooling system to obtain certain desired properties. Quenching is carried out to maintain the mechanical properties associated with the crystal structure which will be lost on slow cooling. The method used is quenching in circulating cooling water media with specimens that have been prepared in the form of AISI 1045 steel. The results obtained are the hardness of AISI 1045 steel after going through the 850oC quenching process with holding times of 30, 45, and 60 minutes, an increase of 300% from the raw material. The application of AISI 1045 steel that has been quenched shows results or hardness values that are the main raw materials for gears, crankshafts, and light vehicle spare parts.  Keywords: quenching, AISI 1045 steel, circulating cooling.
PENGHITUNGAN ULANG SISTEM PERPIPAAN STASIUN PENGUMPUL PASIR JADI ASSET 3 AREA SUBANG Fauzi Ibrahim; Anang Ansyori; Adi Prasetyo
JURNAL TEKNIK MESIN Vol 10, No 1 (2022): Oktober
Publisher : Universitas Bandar Lampung

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Abstract

PT Pertamina EP adalah Badan Usaha Milik Negara yang bisnis utamanya dalam bidang Oil & Gas dengan beberapa area yang sistem utamanya menggunakan perpipaan. Namu, ditemukan beberapa masalah pada beberapa sistem perpipaan nya. Penelitian ini bertujuan untuk mengkalkulasi ulang dan mengetahui penyebab terjadi beberapa perbedaan pada desain dan saat operasi berlangsung. Penghitungan kompleks yang dilakukan tak luput dari data pengamatan dan observasi ketika dilapangan. Hasil penelitian menunjukkan pressure drop dengan data design 21,6947 psia, sedangkan pressure drop dengan data operation lebih kecil yaitu 0,76777 psia. Thickness dengan data design 0,1433423 dan Thickness Minimum nya adalah 0,278342261 inch (7,069989 mm), sedangkan Thickness dengan data operation 0,0822539-inch dan Thickness Minimum 0,217253882-inch (5,51825 inch). Perbandingan antara data design dan operation menghasilkan perbedaan diameter nominal dan schedule, untuk data design diameter nominal yaitu 8-inch dan schedule 40, sedangkan data operation diameter nominalnya adalah 8-inch dan schedule 40, namun bisa memakai 6 inch..
Co-Authors Agung Efriyo Hadi Anang Ansyori Fauzi Ibrahim