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*Steel | *Steel | ||
*Heated Bed *possible Cooled bed..Al* | *Heated Bed *possible Cooled bed..Al* | ||
*Conducted Face Milling | *Conducted Face Milling at end of each layer | ||
* | *Microstructures change depending upon vertical displacement due to heat accumulation | ||
*Heat accumulation affects layer thickness | |||
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Revision as of 17:17, 22 May 2014
"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 at end of each layer
- Microstructures change depending upon vertical displacement due to heat accumulation
- Heat accumulation affects layer thickness
"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.
A Novel Control Approach for the Droplet Detachment in Rapid Prototyping by 3D Welding=
- Arc welding
- Oscilate frequency to release the ball of molten material to the substrate
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.
- B. Zheng and R. Kovacevic, “A Novel Control Approach for the Droplet Detachment in Rapid Prototyping by 3D Welding,” J. Manuf. Sci. Eng., vol. 123, no. 2, pp. 348–355, Mar. 2000.