Journal
MATERIALS TODAY COMMUNICATIONS
Volume 26, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.mtcomm.2021.102037
Keywords
Direct ink writing; Photosensitive resin; UV curing; High-speed steel; Printing slurry
Categories
Funding
- Fundamental Research Funds for the Central Universities [FRFGF2005A]
- National Natural Science Foundation of China [52004027]
- Guangdong MEPP Fund [GDOE [2019] A16]
- State Key Lab of Advanced Metals and Materials [2019ZD08, 2020Z17]
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A low-cost 3D printing technology for metal parts was developed by combining direct ink writing technology with UV light curing. The study showed that the technology can achieve high-quality metal parts without pores or defects, providing a promising method for printing metal parts with complex shapes.
To develop a low-cost 3D printing technology for metal parts, we combined the direct ink writing technology with UV light curing to print complex-shaped high-speed steel parts. To obtain the printing slurry, metal powders were mixed with photosensitive resin. After optimizing the printing slurry and printing parameters, the photosensitive resin formed a robust cross-linking network under UV light irradiation, thus bonding powder particles together. The printed sample had good printing quality without any pores or defects found. The surface roughness was about 1.58 mu m. After sintering, the as-sintered sample had homogeneous microstructure, relatively high density of 98.2 %, and low surface roughness value of 0.42 mu m. Uniform sintering shrinkage with a shrinkage coefficient of 9% was observed. Overall, one promising technology was proposed to print metal parts with complex shapes by UV-assisted direct ink writing.
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