"3d Welding and Milling: Part I–a Direct Approach for Freeform Fabrication of Metallic Prototypes"
- Steel
- Heated Bed *possible Cooled bed..Al*
- Conducted Face Milling
- Recorded different microstructures at different layers
"3d Welding and Milling: Part II—Optimization of the 3d Welding Process Using an Experimental Design Approach
- Mild Steel
- Found that the wire feed rate and voltage are more important than the distance from tip and gas concentration
- Methods to follow: Unidirectional and "Zig Zag"
- 0.9 mm diameter bead "0.035 inch"
- Single Bead experiments. Studied parameters
Rapid Prototyping of 4043 Al-Alloy Parts by VP-GTAW
- Height of bead decreased with an increase of current.
- Bead width increases with increasing current
- Height and width of bead decrease with increase of welding speed.
References
[#] Y.-A. Song, S. Park, D. Choi, and H. Jee, “3d Welding and Milling: Part I–a Direct Approach for Freeform Fabrication of Metallic Prototypes,” International Journal of Machine Tools and Manufacture, vol. 45, no. 9, pp. 1057–1062, Jul. 2005. [#] Y.-A. Song, S. Park, and S.-W. Chae, “3d Welding and Milling: Part Ii—Optimization of the 3d Welding Process Using an Experimental Design Approach,” International Journal of Machine Tools and Manufacture, vol. 45, no. 9, pp. 1063–1069, Jul. 2005. [#] H. Wang, W. Jiang, J. Ouyang, and R. Kovacevic, “Rapid prototyping of 4043 Al-alloy parts by VP-GTAW,” Journal of Materials Processing Technology, vol. 148, no. 1, pp. 93–102, May 2004.