Analisis Pengaruh Media Pendingin pada Proses Pengerasan Stainless Steel 410 terhadap Sifat Mekanik dan Struktur Mikro untuk Aplikasi Hammer Crusher

Setiawan, Zahra Luthfiah (2018) Analisis Pengaruh Media Pendingin pada Proses Pengerasan Stainless Steel 410 terhadap Sifat Mekanik dan Struktur Mikro untuk Aplikasi Hammer Crusher. Undergraduate thesis, Institute Technology of Sepuluh Nopember.

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Abstract

Hammer crusher merupakan komponen penunjang penghancur raw material berupa limestone pada PT. Semen Indonesia (Persero) Tbk. Hammer crusher sering mengalami keausan yang sangat cepat dan tidak sesuai dengan umur pakainya. Oleh karena itu, penelitian ini bertujuan untuk mencari solusi dengan menganalisis pengaruh media pendingin pada proses hardening dan tempering terhadap sifat mekanik dan struktur mikro SS 410. Spesimen uji dipanaskan pada temperatur 950°C dengan waktu holding 60 menit, dilanjutkan tempering pada temperatur 250°C dengan waktu holding 60 menit. Berdasarkan proses perlakuan yang telah dilakukan, didapatkan bahwa pada proses hardening, kekerasan tertinggi diperoleh pada spesimen SS 410 H-WQ yaitu 484 HV, dan terdiri dari fasa lath martensite, dan retained austenite, sehingga menghasilkan nilai keausan yang cukup rendah, yaitu 25,66 mm/jam. Pada perlakuan hardening dan tempering, spesimen SS 410 HT-WQ memiliki nilai kekerasan tertinggi yaitu 490 HV dan terdiri dari fasa lath martensite, retained austenite, dan presipitasi karbida M23C6, sehingga menghasilkan keausan yang rendah, yaitu 21 mm/jam. ===================================================================================================== Hammer crusher is a supporting component of crushing raw material in the form of limestone in PT. Semen Indonesia (Persero) Tbk. Hammer crusher often experi ence very fast wear and doesn’t match with the life design . Therefore, this research aims to find a solution by analyzing the effect of cooling media on the hardening and tempering process on the mechanical properties and microstructure of SS 410. The test specimens were heated at 950°C with a holding time of 60 minutes, followed by tempering at 250°C with a holding time of 60 minutes. Based on the treatment process, it was found that in the hardening process, the highest hardness was obtained in specime n o f SS 410 H - WQ of 484 HV, and consisted of lath martensite phase, and retained austenite, resulting in a relatively low wear rate of 25.66 mm/hr. In hardening and tempering treatments, the SS 410 HT - WQ specimen has the highest hardness value of 490 HV and c onsists of lath martensite, retained austenite, and carbide precipitation M 23 C 6 , resulting in low wear rate of 21 mm/hr.

Item Type: Thesis (Undergraduate)
Additional Information: RSMt 672.36 Set a-1 3100018074210
Uncontrolled Keywords: Hammer Crusher, SS 410. Hardening, Tempering
Subjects: T Technology > TN Mining engineering. Metallurgy > TN752.I5 Steel--Heat treatment
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User: Setiawan Zahra Luthfiah
Date Deposited: 05 Feb 2018 02:34
Last Modified: 28 Apr 2020 02:13
URI: http://repository.its.ac.id/id/eprint/49240

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