Analisa Keretakan pada Dies Extruder Saat Proses Heat Treatment dengan Aplikasi Baja DIN 1.2510. (Crack Analysis on Extruder Dies During Heat Treatment Process with DIN 1.2510 Steel Applications).

Prawira, Bima Yudha (2023) Analisa Keretakan pada Dies Extruder Saat Proses Heat Treatment dengan Aplikasi Baja DIN 1.2510. (Crack Analysis on Extruder Dies During Heat Treatment Process with DIN 1.2510 Steel Applications). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.

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Abstract

Dies extruder merupakan cetakan pelet yang ada pada mesin extruder. Pembuatan dies extruder memerlukan proses heat treatment untuk meningkatkan nilai kekerasannya. Bahan dies extruder adalah baja DIN 1.2510. Berdasarkan data dari perusahaan x, proses heat treatment mengalami keretakan 6 buah dari total 100 buah dies extruder yang produksi. Permasalahan tersebut, peneliti memutuskan untuk melakukan analisa terkait keretakan pada dies extruder saat proses heat treatment. Tujuan dari analisa terkait permasalahan ini yaitu untuk menganalisa pengaruh variasi hardening dan variasi holding time pada proses heat treatment terhadap nilai kekerasan baja DIN 1.2510. Metode yang digunakan yaitu dengan membuat spesimen uji sebanyak 30 buah dengan menggunakan bahan yang sama dengan dies extruder yaitu baja DIN 1.2510 yang memiliki dimensi Ø49mm x 3mm kemudian di heat treatment dengan variasi hardening suhu 800°C dan 900°C dengan holding time 40 menit, 60 menit, dan 80 menit. Setelah itu, di quenching dengan media pendingin oli SAE 20W, kemudian di tempering dengan suhu 400°C dengan holding time 60 menit. Dari hasil proses heat treatment, dilakukan pengujian keretakan, pengujian metalografi, dan pengujian kekerasan. Hasil dari penelitian ini diketahui pengaruh hardening dengan nilai kekerasan terendah suhu 800°C holding time 40 menit dengan nilai 55,2 HRC. Sedangkan nilai kekerasan paling tinggi terdapat pada hardening suhu 900°C holding time 40 menit dengan nilai rata-rata total 57 HRC. Untuk pengaruh variasi holding time diketahui bahwa pada temperatur 800°C nilai kekerasan semakin meningkat seiring dengan bertambahnya waktu penahanan, sedangkan pada temperatur 900°C nilai kekerasan semakin menurun. Kata kunci: Baja DIN 1.2510, Dies Extruder, Heat Treatment, Uji Keretakan, Uji Kekerasan, Uji Metalografi.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Kata kunci: Baja DIN 1.2510, Dies Extruder, Heat Treatment, Uji Keretakan, Uji Kekerasan, Uji Metalografi.
Subjects: T Technology > T Technology (General)
T Technology > TN Mining engineering. Metallurgy
T Technology > TS Manufactures
Divisions: Fakultas Teknik > Program Studi Teknik Mesin
Depositing User: 1421900022 Bima Yudha Prawira
Date Deposited: 25 Jul 2023 06:53
Last Modified: 26 Jul 2023 01:37
URI: http://repository.untag-sby.ac.id/id/eprint/24837

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