Perancangan Dan Pembuatan Tungku Krusibel Untuk Peleburan Aluminium Dengan Bahan Bakar Gas Dan Proses Pengujian Tungku Serta Proses Pengecoran Melalui Cetakan Pasir Hitam Dengan Variasi Waktu Pembongkaran

Utama, Resta Pasta Putra and , Agus Yulianto, ST, MT (2018) Perancangan Dan Pembuatan Tungku Krusibel Untuk Peleburan Aluminium Dengan Bahan Bakar Gas Dan Proses Pengujian Tungku Serta Proses Pengecoran Melalui Cetakan Pasir Hitam Dengan Variasi Waktu Pembongkaran. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

The purpose of this study is to examine the process of making a crucible furnace with LPG gas fuel. The furnace test is done by melting aluminum. The smelting aluminum is poured through a black sand mold. The black sand mold is disassembled with a variation of 10 seconds and 1 hour. Casting aluminum is then carried out shrinkage test, porosity test, hardness test, chemical composition test and microstructure test. Making krusibel kitchens begins with making a stove consisting of refractory and red brick, then arranged in a circle with a height of 85cm and a diameter of 75cm. Continued to make an ignition system using a 9cm diameter pipe connected with a 1cm diameter pipe using carbide welding. The iron pipe serves as a place for mixing between air and gas. Then connect a 2,6cm diameter pipe with a 7,7cm pipe. Then the pipe is installed on an iron drum with a diameter of 58cm and a height of 42,3cm. The iron pipe serves as a heating pipe that is used to warm water on the drum. The furnace testing process is carried out by melting aluminum and obtaining the highest temperature at a temperature of 820oC with a melting time of 50 minutes until all 10kg of aluminum melts. Aluminum castings produced by the crucible of the crucible are made and then tested for composition and obtained content (Al) 87.51%, (Si) 7.71%, (Fe) 1.63% ,, (Zn) 1.21%, (Cr) 1.14% and other elements. then the hardness test using brinell test equipment and obtained a hardness value of <70HB in the specimen with a 10-second mold dismantling time and <70HB in the specimen with a variation of the dismantling time of 1 hour. Then observed the porosity defects in the two specimens and found the most porosity in the specimens with a variation of the time of dismantling 1 hour. From the results above it can be concluded that the length of mold demolition affects the amount of porosity and hardness of a cast where the longer the disassembly time, the more porosity and the lower the hardness value.

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	Tungku Krusibel, Aluminium, Gas
Subjects:	T Technology > TS Manufactures
Divisions:	Fakultas Teknik > Teknik Mesin
Depositing User:	RESTA PASTA PUTRA UTAMA
Date Deposited:	05 Nov 2018 08:53
Last Modified:	21 Nov 2019 03:31
URI:	http://eprints.ums.ac.id/id/eprint/68078

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