Development of a novel industrial metal laser melting device and its performance investigation Endüstriyel bir metal lazer ergitme cihazının özgün olarak geliştirilmesi ve performansının araştırılması
Journal of the Faculty of Engineering and Architecture of Gazi University, cilt.40, sa.3, ss.1479-1494, 2025 (SCI-Expanded, Scopus, TRDizin)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 40 Sayı: 3
- Basım Tarihi: 2025
- Doi Numarası: 10.17341/gazimmfd.1424568
- Dergi Adı: Journal of the Faculty of Engineering and Architecture of Gazi University
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Art Source, Compendex, TR DİZİN (ULAKBİM)
- Sayfa Sayıları: ss.1479-1494
- Anahtar Kelimeler: laser optic, laser track, preheating recoater, Selective laser melting device
- Süleyman Demirel Üniversitesi Adresli: Evet
Özet
Additive manufacturing (AM) began to be used widely with 4th Industrial Revolution. Selective Laser Melting Method (SLM) is one of the most preferred AM methods. Developing SLM devices become importance through advantages such as having the minimum cost of waste material, manufacturability of complex shaped and lattice structured parts, adaptability for topology optimization. In this study, an SLM device which has a unique preheated-double side functioned recoater was designed and manufactured with all its mechanic and electronic/electro-optic equipment. It has also double laser scanning function and positioning mechanism to tune focal length of the scanner heads. In view of SLM devices, focal length directly effects the beam diameter on the powder surface based on mathematical expressions (theoretical beam diameter) and existing beam during manufacturing (experimental beam diameter). To reveal the efficiency of device, single laser track lines with different laser powers was investigated. Test results showed that, experimental beam diameter was found as consistent with the theoretical one between 100 W and 200 W. At other power levels, track widths were found as increasing proportional to increasing power in parallel to literature. Both melt pool depths and widths were obtained effective at 60 ve 90 J/mm^2 among 3 energy density.