Feasibilty study of dissilmilar metal welding between galvanized steel and alluminium alloys using metal inert gas welding(MIG) /
Tengku Mohd Muaz Tengku Zakaria
- Kuantan, Pahang : UMP, 2013
- xix, 91 p. : ill. (some col.) ; 30 cm. + 1 CD-ROM
Project paper ( Bachelor of Mechanical Engineering with Automotive) -- Universiti Malaysia Pahang - 2013
Bibilography : p. 73-76
An experimental project to combine different metals (aluminum alloy to galvanized steel) welded using metal inert gas welding or MIG. The reason of this experimental project is done is to examine the effect of the MIG weld towards the combination of different metals. The research's objective is to optimize the parameter and investigate the effect of welding parameter on tensile strength and hardness based on Taguchi method. The used of Taguchi method is to guide the experimental number. The parameter chosen for this project is welding current, voltage, speed and bevel angle on galvanized steel. The Minitab statistical software was used to create and suitable orthogonal arrays for run the experiment. This MIG welding will be using the automatic table with the help aluminum 5356 filler wire. Type of welding joint that has chosen is butt joint. The argon is used for shielding gas and the constant of torch distance was setup to be 1mm from the specimen. The gas flow rate was constant at 15L/m. The size of every material has a dimension of length x width x thickness (70 mm x 50 mm x 2mm) and will be held onto the automatic welding table with steel jig during the welding process. The sample for lab testing was cut into small size for mounting of hardness test and ASTM E8-04 was used to cut the specimen for tensile test after welding done. Tests that will conducted after the welding are, mechanical test as tensile test by using Instron Tensile machine and Vickers hardness test by using Microhardness machine The finding from this research project is achieving the objective that is aluminum alloy and galvanized steel can merged together using chosen filler metal and getting value reading of tensile strength and hardness for every joint following a determined parameter setup by Taguhi method was obtain. The maximum tensile strength reaches 90Mpa and maximum hardness at the heat affected zone of aluminum alloy is improved by using Taguchi method.