Thermal Accumulation in Metal Micro-Parts Fabricated by Micro Droplet Deposition Manufacturing Technique

Han Song Zuo; He Jun Li; Le Hua Qi; Jun Luo; Song Yi Zhong

doi:10.4028/www.scientific.net/AMR.941-944.2154

Paper Titles

The Periodical Translocation Gear-Grinding Technique to Improve the Indexing Accuracy of Ultra-Precision Gears
p.2134

Experimental Investigation of Fabrication of Double Tapered Hole Array by Using Electroforming and Mask Electrochemical Machining
p.2140

Exploration of Hyperfine Micro-Machining Limit
p.2145

Microfluidic Chips with Micro-Pillar Array for Cell Capture
p.2149

Thermal Accumulation in Metal Micro-Parts Fabricated by Micro Droplet Deposition Manufacturing Technique
p.2154

Contrast Prediction for Laser Direct Part Marked Data Matrix Symbols on Titanium Alloy Substrates
p.2161

Study of Effect of Laser Marking Data Matrix Symbols on Titanium Alloy Sheets Using Nd:YAG Laser
p.2165

Experimental Research on Affect of Water Jet to Laser Compound Processing of Crystalline Silicon
p.2169

Influence of Laser Input Current and Water Jet to Etching Amount of Polycrystalline Si Wafer
p.2173

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Thermal Accumulation in Metal Micro-Parts Fabricated by Micro Droplet Deposition Manufacturing Technique

Abstract:

Thermal accumulation in micro droplet deposition manufacturing (MDDM) has a significant influence on geometric profile and microstructure of the fabricated metal micro-parts. In this paper, thermal behavior of a new aluminum droplet on the deposit surface was investigated using one-dimensional heat transfer model. Then several thin-walled aluminum cubic pipes were fabricated by MDDM to verify the numerical analysis result. The result shows that the thermal accumulation would increase gradually with the increase of the deposit height. It associated with thermal input and output on the top surface of the deposit, which could be controlled or eliminated by optimizing processing parameters such as deposition frequency.