Study Of Wire Arc Additive Manufacturing And Potential In Part Repair
Additive manufacturing has commonly been used in many fields such as automotive, marine, construction and more. In this research, the type of additive manufacturing been used is by one of the wire arc additive manufacturing, which is MIG welding. During the deposition process, many parameters wil...
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| Format: | Monograph |
| Language: | English |
| Published: |
Universiti Sains Malaysia
2021
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| Subjects: | |
| Online Access: | http://eprints.usm.my/55763/ http://eprints.usm.my/55763/1/Study%20Of%20Wire%20Arc%20Additive%20Manufacturing%20And%20Potential%20In%20Part%20Repair.pdf |
| Summary: | Additive manufacturing has commonly been used in many fields such as automotive,
marine, construction and more. In this research, the type of additive manufacturing been used
is by one of the wire arc additive manufacturing, which is MIG welding. During the
deposition process, many parameters will influence the quality of the deposited material.
Hence to identify the optimal parameters, this research has been conducted and three
parameters that have been manipulated are the voltage, filler speed and feed rate. For each
parameter, there will be three levels. A total of 27 experimental combinations have been
produced. Taguchi has been used to simplify the 27 combinations to 9 equivalent
combinations to simplify the parameters combination. Based on this parameter, several tests
have been conducted to assess the deposited material to the intended application i.e., product
repair. The assessment is made based on toughness test, hardness test, and microstructure
observation. The microstructure analysis was used to analyse the grain size and the internal
cracks or gap between the grain structures. Based on Taguchi method, the optimal
parameters are at combination of 2 voltage, 1 mm/sec filler speed and 100 mm/sec feed rate
and 6 voltage, 7mm/sec filler speed and 100 mm/min feed rate for weld-forged and weldmachined
respectively. |
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