ANALISIS VARIASI TEKANAN OKSIGEN TERHADAP POROSITAS PADA PENGELASAN OXY-ACETYLENE ALUMINIUM 5052

Jagad Gumelar; Oktariana Heriyanti;

ANALISIS VARIASI TEKANAN OKSIGEN TERHADAP POROSITAS PADA

PENGELASAN OXY-ACETYLENE ALUMINIUM 5052

Jagad Gumelar

Pengelasan oxy-acetylene telah lama menjadi pilihan utama dalam industri, untuk menghubungkan
logam ringan seperti aluminium 5052. Namun, masalah sering muncul dalam bentuk porositas
dalam hasil pengelasan, yang berpotensi mempengaruhi kekuatan dan mutu sambungan tersebut.
Tujuan penelitian ini adalah, untuk menginvestigasi dampak variasi oksigen dalam pengelasan
terhadap tingkat porositas pada pengelasan oxy-acetylene aluminium 5052. Metode eksperimen
yang digunakan dalam penilitian ini dengan memvariasikan variabel tekanan oksigen pada
pengelasan Oxy-Axetylene material aluminium 5052, yang nantinya masing masing variabel
tekanan oksigen dilakukan uji porositas dengan tiga spesimen, pada setiap variabel tekanan
oksigen. Spesimen yang sudah diuji porositas kemudian dianalisa variabel tekanan oksigen
berpengaruh terhadap porositas. Variabel tekanan oksigen meliputi 30 kg/cm2

, 40 kg/cm2
, 50

kg/cm2
. Berdasarkan hasil penilitian ini terhadap uji porositas mendapatkan hasil 5,192% pada
variabel tekanan oksigen 30 kg/cm2 merupakan hasil tertinggi porositasnya, kemudian nilai
terendah porositas yang merupakan hasil terbaik didapatkan pada variabel tekanan oksigen 40
kg/cm2 dengan tingkat porositas sebesar 1,249%, dan kemudian tingkat porositas yang lebih baik
dibanding variabel oksigen 30 kg/cm2didapatkan pada variabel tekanan oksigen 50kg/cm2
dengan hasil 1,808%.
Kata kunci: Oxy-Acetylene, Aluminium 5052, Porositas, Struktur Mikro.

ANALYSIS OF OXYGEN PRESSURE VARIATIONS ON POROSITY IN OXY-
ACETYLENE ALUMINUM 5052 WELDING

Jagad Gumelar

Oxy-acetylene welding has long been the primary choice in the industry, for joining light metals
such as aluminum 5052. However, problems often arise in the form of porosity in the resulting
weld, which has the potential to affect the strength and mutuality of the joint. The aim of this
research is, to investigate the impact of variations in oxygen in welding on the level of porosity in
welding oxy-acetylene aluminum 5052. The experimental method used in this research is by
varying the oxygen pressure variable in welding Oxy-Axetylene aluminum 5052, which in turn is a
pressure variable for each Oxygen porosity tests were carried out with three specimens, at each
oxygen pressure variable. Specimens that have been tested for porosity are then analyzed for the
influence of oxygen pressure variables on porosity. Oxygen pressure variables include 30 kg/
cm2
, 40 kg/cm2

, 50 kg/cm2

. Based on the results of this research, the porosity test obtained a
result of 5.192% on the oxygen pressure variable of 30 kg/cm2 which was the highest porosity
result, then the lowest porosity value which was the best result was obtained on the oxygen
pressure variable of 40 kg/cm2 with a porosity level of 1.249%, and then a better porosity level
compared to the oxygen variable of 30 kg/cm2was obtained at the oxygen pressure variable of
50kg/cm2 with a result of 1.808%.
Keywords: Oxy-Acetylene, Aluminum 5052, Porosity, Microstructure.