Pengaruh Laju Pendinginan Hasil Coran Produk Hand Press Kancing Bungkus Terhadap Kekerasan dan Struktur Mikro Pada Pengecoran Aluminium Menggunakan Cetakan Permanen

Tirtayasa, Sakti and , Agus Yulianto, S.T., M.T. (2020) Pengaruh Laju Pendinginan Hasil Coran Produk Hand Press Kancing Bungkus Terhadap Kekerasan dan Struktur Mikro Pada Pengecoran Aluminium Menggunakan Cetakan Permanen. Skripsi thesis, Universitas Muhammadiyah Surakarta.

	PDF (Naskah Publikasi) Naskah Publikasi.pdf Download (1MB)
	PDF (Halaman Depan) HALAMAN DEPAN-124.pdf Download (1MB)
	PDF (Bab I) BAB I.pdf Download (56kB)
	PDF (Bab II) BAB II.pdf Restricted to Repository staff only Download (500kB) | Request a copy
	PDF (Bab III) BAB III.pdf Restricted to Repository staff only Download (1MB) | Request a copy
	PDF (Bab IV) BAB IV.pdf Restricted to Repository staff only Download (684kB) | Request a copy
	PDF (Bab V) BAB V.pdf Restricted to Repository staff only Download (45kB) | Request a copy
	PDF (Daftar Pustaka) DAFTAR PUSTAKA.pdf Download (85kB)
	PDF (Lampiran) LAMPIRAN.pdf Restricted to Repository staff only Download (4MB) | Request a copy
	PDF (Surat Pernyataan Publikasi) Surat Pernyataan Publikasi Ilmiah.pdf Restricted to Repository staff only Download (323kB) | Request a copy

Abstract

This study aims to determine the effect of the cooling rate on aluminum casting using permanent molds which were previously subjected to variations in preheat with temperatures of 100°C, 150°C and 200°C on hardness and microstructure. This study uses aluminum which is melted using a crucible furnace. The initial casting process prepares a permanent mold that is preheated. After the aluminum is melted, it can then be poured into a permanent mold. The next process is to disassemble the permanent mold and take cast products. Then the cast product is measured to drop in temperature with an interval of two minutes. From the results of testing the chemical composition there are several elements consisting of, Al 86.91%, Si 8.11%, Zn 2.95%, Fe 1.08%. Judging from the elements present in this material can be classified as aluminum alloy aluminum metal (Al-Si). From the results of observations of the microstructure, the greater the value of the cooling rate, the granules on the microstructure obtained look larger. At a cooling rate of 3.025 °C/minute the micro-grain test results appear large. Whereas at the cooling rate of 2.825 °C/minute and 2.5 °C/minute the micro grain photo test results appear smaller. This affects the hardness of cast products, the smaller and smaller the grain size of the microstructure, the hardness of cast products is also increasing. At a cooling rate of 2.5 °C/minute the hardness value was 78.57 BHN, the cooling rate was 2.825 °C/minute the hardness value was 76.53 BHN and the rate of cooling was 3.025 °C/minute the hardness value was 75.50 BHN.

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	Aluminum, Permanent Mold, Cooling Rate, Microstructure, Brinell
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Fakultas Teknik > Teknik Mesin
Depositing User:	SAKTI TIRTAYASA
Date Deposited:	22 Jan 2020 03:31
Last Modified:	22 Jan 2020 03:33
URI:	http://eprints.ums.ac.id/id/eprint/79918

Actions (login required)

View Item