Safrisal, Mochammad Detta Rizky (2016) Analisa Pengaruh Pengelasan GMAW Terhadap Perubahan Distorsi Pada Alumunium Dengan Variasi Variabel Heat Input. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Proses pengelasan biasa digunakan untuk fabrikasi dalam aplikasi engineering,
misalnya untuk pesawat terbang, otomotif, dan industri perkapalan. Salah satu
metode pengelasan yang sering dipakai oleh masyarakat umum, yaitu metode
GMAW. Proses pengelasan, pada dasarnya memiliki tujuh macam sambungan,
yaitu: butt joint, backing joint, T joint, Cross joint, overlap joint, corner joint, dan
edge joint. Kualitas hasil pengelasan dipengaruhi oleh energi panas yang berarti
dipengaruhi juga oleh arus las, tegangan dan kecepatan pengelasan. Adanya
masukan panas pada logam ini juga mengakibatkan adanya tegangan sisa yang
nantinya akan menimbulkan distorsi. Dalam tugas akhir ini dilakukan penelitian
untuk mengetahui seberapa besar perubahan distorsi pada plat alumunium dengan
tiga (3) variasi amperemeter 100 A, 125 A, dan 150 A. Dengan dimensi yang
dimiliki pada plat yaitu : 300 mm x 150 mm x 12 mm dan kampuh yang di gunakan
adalah single V. Pengelasan dilakukan dengan metode GMAW. Perhitungan
perubahan distorsi pada plat adalah pada setiap titik yang sudah ditentukan yaitu :
sepuluh (10) titik. Serta ada empat (4) layer yang digunakan yaitu : root pass, hot
pass 1, hot pass 2, dan capping. Sehingga dapat disimpulkan bahwa semakin besar
heat Input yang diberikan, maka distorsi yang terjadi juga semakin besar. perubahan
distorsi terbesar adalah pada plat ke tiga (3) dengan amperemeter 150, dan yang
terkecil adalah pada plat ke satu (1) dengan amperemeter 100.
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Welding process is usually used for fabrication in engineering applications, for
example for aircraft, automotive and shipbuilding industries. One method of
welding is often used by the general public, the method GMAW. Welding process,
basically have seven kinds of connections, namely: butt joint, backing joint, T joint,
cross joint, overlap joint, corner joint, and the joint edge. The quality of the welding
results are affected by the heat energy means is influenced also by the welding
current, voltage and welding speed. The presence of heat input on this metal also
results in the presence of residual stresses that would cause distortion. In this thesis
conducted a study to determine how much distortion changes the aluminum plate
with three (3) variations ammeters 100 A, 125 A, and 150 A.With dimensions
owned by the plate are: 300 mm x 150 mm x 12 mm and a seam that in use is the
single V. Welding conducted using GMAW. Calculation of changes in distortion
of the plates is at every point that has been determined as follows: ten (10) points.
And there are four (4) layers used are: root pass, hot pass 1, hot pass 2, and capping.
So it can be concluded that the greater the heat input is given, then the distortion
that occurs is also greater. Change is the biggest distortion in the third plate (3) with
the ammeters 150, and the smallest is the first plate (1) with the ammeters 100.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKe 671.52 Saf a |
| Uncontrolled Keywords: | GMAW, Heat Input, root pass, hot pass 1, hot pass 2, capping |
| Subjects: | V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 29 Aug 2017 03:08 |
| Last Modified: | 27 Dec 2018 07:30 |
| URI: | http://repository.its.ac.id/id/eprint/48780 |
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