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Studi pengaruh heat input pada pengelasan gas metal ARC welding (GMAW) pada pelat komposit Al-10Zn-6Mg-3Si berpenguat 10% vol SiC sebagai struktur badan kendaraan taktis = Study on the Effects of Heat Input on GMAW (Gas Metal Arc Welding) of Al-10Zn-6Mg-3Si Composite Thick Plate Strengthened by 10 vol. % SiC as Tactical Vehicle Body Structure / Abi Bilasoktana Basmoro

Abi Bilasoktana Basmoro; Bondan Tiara Sofyan, supervisor; Winarto, supervisor; Anne Zulfia, examiner; Donanta Dhaneswara, examiner; Ario Soeryo Baskoro, examiner ([Publisher not identified] , 2015)

 Abstrak

[ABSTRAK
Pengelasan merupakan metode yang sering digunakan pada proses manufaktur dari
kendaraan taktis. Pengelasan dengan menggunakan metode gas metal arc
welding(GMAW) umum dilakukan pada paduan aluminium, dikarenakan minimnya
kontaminasi dari udara dan memiliki kecepatan pengelasan yang tinggi karena
elektroda terumpan secara kontinyu.
Pada penelitian ini dilakukan pengelasan dengan metode GMAW pada pelat
komposit Al-10Zn-6Mg-3Si yang diperkuat oleh 10 %Vol. SiC dengan menggunakan
metode squeeze casting. Parameter yang digunakan adalah arus, yaitu sebesar 180, 210,
dan 240 A, dengan variabel tetap tegangan sebesar 22 V, dan kecepatan pengelasan
sebesar 180 mm/menit. Didapatkan variasi heat input sebesar 1.32, 1.54, dan 1.76
kJ/mm. Pengujian yang dilakukan antara lain uji tekuk, uji keras, SEM, dan
metalografi.
Hasil yang didapatkan adalah dengan penambahan heat input pada proses pengelasan,
kekerasan yang didapatkan semakin menurun karena dengan penambahan heat input
akan memperlambat pendinginan sehingga memperbesar butir.Ditemukan fasa Al4C3
pada pengujian SEM, yang mengakibatkan penurunan kekuatan dari produk
pengelasan. Fasa tersebut didapatkan dari reaksi Al dengan SiC pada temperatur
diatas 700oC, sedangkan temperatur pengelasan mencapai 2000o C.

ABSTRACT
Welding is one of the most common method used in joining ballistic vehicle body
structure. Welding with gas metal arc welding (GMAW) is widely used for joining
aluminium alloy because of its low atmosphere contamination and continously
feeding electrode that results in high welding velocity
This research studied GMAW of Al-10Zn-6Mg-3Sicomposite reinforced by 10 %vol.
SiC, produced by squeeze casting method. In GMAW, the current is varied to 180,
210, and 240 A, with constant voltage and velocity of 22 V and 180mm/min,
respectively. Therefore heat input used in this research is varied to 1.32, 1.54, 1.76
kJ/mm. The characterization included bending test, microhardness test, dan
metallography observation.
The result shows that the higher heat input will decrease the hardness because it
slowed down the cooling rate so that increased the grain size. Al4C3 was found on
SEM observation, which decreased the strength of the weld products. Al4C3 was
produced by the reaction of Al with SiC at 700 oC, which was lower than the welding
temperature that exceed 2000 oC.;Welding is one of the most common method used in joining ballistic vehicle body
structure. Welding with gas metal arc welding (GMAW) is widely used for joining
aluminium alloy because of its low atmosphere contamination and continously
feeding electrode that results in high welding velocity
This research studied GMAW of Al-10Zn-6Mg-3Sicomposite reinforced by 10 %vol.
SiC, produced by squeeze casting method. In GMAW, the current is varied to 180,
210, and 240 A, with constant voltage and velocity of 22 V and 180mm/min,
respectively. Therefore heat input used in this research is varied to 1.32, 1.54, 1.76
kJ/mm. The characterization included bending test, microhardness test, dan
metallography observation.
The result shows that the higher heat input will decrease the hardness because it
slowed down the cooling rate so that increased the grain size. Al4C3 was found on
SEM observation, which decreased the strength of the weld products. Al4C3 was
produced by the reaction of Al with SiC at 700 oC, which was lower than the welding
temperature that exceed 2000 oC., Welding is one of the most common method used in joining ballistic vehicle body
structure. Welding with gas metal arc welding (GMAW) is widely used for joining
aluminium alloy because of its low atmosphere contamination and continously
feeding electrode that results in high welding velocity
This research studied GMAW of Al-10Zn-6Mg-3Sicomposite reinforced by 10 %vol.
SiC, produced by squeeze casting method. In GMAW, the current is varied to 180,
210, and 240 A, with constant voltage and velocity of 22 V and 180mm/min,
respectively. Therefore heat input used in this research is varied to 1.32, 1.54, 1.76
kJ/mm. The characterization included bending test, microhardness test, dan
metallography observation.
The result shows that the higher heat input will decrease the hardness because it
slowed down the cooling rate so that increased the grain size. Al4C3 was found on
SEM observation, which decreased the strength of the weld products. Al4C3 was
produced by the reaction of Al with SiC at 700 oC, which was lower than the welding
temperature that exceed 2000 oC.]

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 Metadata

Jenis Koleksi : UI - Tesis Membership
No. Panggil : T43562
Entri utama-Nama orang :
Entri tambahan-Nama orang :
Entri tambahan-Nama badan :
Program Studi :
Subjek :
Penerbitan : [Place of publication not identified]: [Publisher not identified], 2015
Bahasa : ind
Sumber Pengatalogan : LibUI ind rda
Tipe Konten : text
Tipe Media : unmediated ; computer
Tipe Carrier : volume ; online resource
Deskripsi Fisik : xvi, 86 pages : illustration ; 28 cm + lamp.appendix
Naskah Ringkas :
Lembaga Pemilik : Universitas Indonesia
Lokasi : Perpustakaan UI, Lantai 3
  • Ketersediaan
  • Ulasan
  • Sampul
No. Panggil No. Barkod Ketersediaan
T43562 15-17-105537440 TERSEDIA
Ulasan:
Tidak ada ulasan pada koleksi ini: 20415990
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