Three-Dimensional Modeling of Selective Laser Sintering of Two Component Metal Powder Layers  

Oleh:

Yuwen, Zhang ; Tiebing, Chen

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Manufacturing Science and Engineering vol. 128 no. 1 (Feb. 2006), page 299-306.
Topik: laser; three - dimensional modeling; sellective laser sintering; metal powder layers

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ93.8 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Laser sintering of a metal powder mixture that contains two kinds of metal powders with significantly different melting points under a moving Gaussian laser beam is investigated numerically. The continuous - wave laser - induced melting accompanied by shrinkage and resolidification of the metal powder layer are modeled using a temperature - transforming model. The liquid flow of the melted low - melting - point metal driven by capillary and gravity forces is also included in the physical model. The numerical results are validated by experimental results, and a detailed parametric study is performed. The effects of the moving heat source intensity, the scanning velocity, and the thickness of the powder layer on the sintering depth, the configuration of the heat affected zone, and the temperature distribution are discussed.

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