Studi Efek Pre-heat, Temperatur Penuangan, Serta Jumlah Isian Cetakan Terhadap Fluiditas Dan Defect Pada Permanent Casting Piston Mahle Eutectic Alloy M124 Menggunakan Metode Elemen Hingga

Muchammad, Mar'i (2020) Studi Efek Pre-heat, Temperatur Penuangan, Serta Jumlah Isian Cetakan Terhadap Fluiditas Dan Defect Pada Permanent Casting Piston Mahle Eutectic Alloy M124 Menggunakan Metode Elemen Hingga. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Ketidakseimbangan rasio ekspor-impor terhadap komponen mesin pembakaran dalam menjadi masalah Indonesia yang serius dalam mewujudkan kemandirian teknologi, tak terkecuali pada piston. Gravity permanent casting dinilai cocok diterapkan dalam pengecoran piston skala kecil-menengah sebagai langkah awal dalam mewujudkan harapan tersebut. Melalui simulasi numerik menggunakan metode elemen hingga, perilaku aliran multifasa selama proses pemenuhan cetakan dan solidifikasi dapat dimodelkan. Sebagai tujuan utama dalam pembelajaran ini, dalam memprediksi kualitas proses dan produk coran, variasi yang diaplikasikan, yaitu temperatur cetakan 30oC, 200oC, dan 400oC, temperatur tuang 675oC, 725oC, dan 775oC, serta 1, 2, dan 4 isian cetakan. Hasilnya, pada simulasi pengecoran piston MAHLE eutectic alloy M124 berhasil membantu dalam memahami perilaku aliran multifasa. Terlebih lagi, perubahan variabel secara jelas berpengaruh terhadap perubahan fluiditas aliran, laju solidifikasi, dan pembentukan casting defect. Hasil terbaik didapatkan pada variasi 775oC-30oC dalam satu isian cetakan. ============================================================================================================= The imbalance of the export-import ratio of internal combustion engine component is one of the significant problems in order to achieve a technological independence in Indonesia, including piston. Gravity permanent casting is considered as a proper method to be applied in small-medium scale piston casting as an initial step for realizing these expectations. Through numerical simulation using finite element methods, the behaviour of the multiphase flow during the mold filling and solidification process can be modeled. The main objectives in this study, in predicting the quality of the process and casting product, the variations applied are pre-heat temperatures of 30oC, 200oC, and 400oC, while pouring temperatures are 675oC, 725oC, and 775oC, with 1, 2, and 4 pattern per mold. As the results, the MAHLE eutectic alloy M124 piston casting simulation succeeded to help in understanding a multiphase flow behaviour. Moreover, the variable changes are clearly seen to affect fluidity, solidification rate, and casting defect formation. The best result are shown at 775oC-30oC on one pattern per mold.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Casting defect, Fluiditas, Permanent casting, Piston MAHLE eutectic alloy M124, Solidifikasi, Fluidity, Solidification.
Subjects: T Technology > TS Manufactures > TS176 Manufacturing engineering. Process engineering (Including manufacturing planning, production planning)
T Technology > TS Manufactures > TS253 Die-Casting
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User: Mar'i Muchammad
Date Deposited: 13 Aug 2020 08:31
Last Modified: 13 Aug 2020 08:31
URI: http://repository.its.ac.id/id/eprint/77941

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