Abstract: A direct method for additive manufacturing of fused silica glass without any post. treatment has been developed. By applying laser to process the fused silica paste, three. dimensional
Discover the Direct Metal Laser Sintering (DMLS) and Selective Laser Melting (SLM) 3D printing technologies and get your metal parts 3D printed on-demand.
Selective laser sintering or melting (SLS/SLM) techniques are first introduced, followed by analysis of results from silica (SiO 2 ), zirconia (ZrO 2) and ceramic-reinforced metal
Deposition dimensions are important in the final applications of products made by direct laser melting (DLM). This investigation used a 200 W fiber laser to produce single-line beads from stainless steel 316L powder using a variety of different energy distributions. To investigate the deposited layer, deposition width, height, penetration
Selective laser melting (SLM) is a powder-bed-fusion AM process whereby a high-density-focused laser beam selectively scans a powder bed and those scanned and solidified layers are stacked upon each other to build a fully functional three-dimensional part, tool, or prototype [1].As shown in Fig. 3.1, SLM is very similar to the selective laser
Surface finishing method based on laser re-melting using a cone annular beam for additive manufacturing. Le Wan, Yibo Zou, Shihong Shi, Wenfei Tao, and Yusheng Ju. Opt. Express 29(25) 42287-42305 (2021) Direct writing of two- and three-dimensional Cu-based microstructures by femtosecond laser reductive sintering of the Cu 2 O nanospheres.
Direct metal laser sintering (DMLS), a 3D printing technique, can produce high strength and good corrosion resistance parts. DMLS utilizes the powder particles partially melted by
With a build volume of 280 x 280 x 365 mm, the device can print objects with the minimum layer height of 20 microns. The SLM 280 2.0 model can be equipped with one or two fiber lasers, 700W each. Due to patented multi-beam technology, the machine is able to achieve build rates 80% faster than a single laser system.
Metal additive manufacturing is gaining interest, with three types of systems: powder-bed, powder-feed, and wire-feed. Selective laser melting (SLM) is a popular powder-bed fusion process that selectively melts metal powder using a laser beam as shown in Fig. 1 [].Their common feature is to build-up parts layer upon layer, based on
Direct metal laser sintering. Direct metal laser sintering (DMLS) is an AM technique for metal 3D printing. In this process, the metal powder (20 μm diameter), free of binder or fluxing agent, is completely melted by the scanning of a high-power laser beam. The resulting part has properties like the original material ( Fig. 9.23 ).
We develop the direct laser melting of ceramic paste technology for application in ceramic additive manufacturing (AM). The Al2O3 ceramic paste, which is a homogeneous mixture of DI-water and
Selective Laser Melting (SLM) is a particular rapid prototyping, and direct metal laser sintering, and this technique has been proven to produce near net-shape parts up to 99.9% relative density.
Laser melting process suffers from a momentous menace due to the instability of the melt pool as the full melting criteria are in use. A very high degree of shrinkage tends to occur during solidification, which generates significant stress in the processed parts. Added to that powder flowability is a major measure in the laser
In this study, the Cu 66.5 Zr 33.5 (at%) metallic glass layers were deposited using laser melting additive manufacturing technique to investigate the effect of laser power on the deposition of CuZr metallic glass micro-wires. The Cu-based metallic glass micro-wires ∼150 µm in diameter with circular cross section were produced by melt
Purpose This paper aims to provide a review on the process of additive manufacturing of ceramic materials, focusing on partial and full melting of ceramic powder by a high-energy laser beam without the use of binders. Design/methodology/approach Selective laser sintering or melting (SLS/SLM) techniques are first introduced, followed
For the purpose of direct laser sintering of metals and ceramics, an experimental equipment has been self-developed. A 200 W CO 2 laser has been used in this equipment. Actually, the power of 200 W is not enough for melting or sintering high-melting point materials of some metals and ceramics, hence a pre-heating device is built
Selective laser sintering/melting of nitinol–hydroxyapatite composite for medical applications. The layer-by-layer synthesis of 3D parts from nitinol (NiTi intermetallide) and hydroxyapatite additions using selective laser sintering/melting (SLS/SLM) is studied and no significant destruction of HA ceramics under laser treatment is observed.
The Ni 3 Al intermetallics involve more attention because of inherent material properties especially interesting in high temperature application. In this study, the Selective Laser Melting (SLM) and Direct Laser Metal Deposition (DLMD) are used to manufacture the single-tracks and layers. The optical microscopy, SEM, XRD and EDX microelement
Direct Laser. Purpose This paper aims to provide a review on the process of additive manufacturing of ceramic materials, focusing on partial and full melting of ceramic powder by a high-energy laser beam without the use of binders. Design/methodology/approach Selective laser sintering or melting (SLS/SLM) techniques are first introduced
DOI: 10.23919/CLEO.2019.8750415 Corpus ID: 165078246; Additive Manufacturing of Fused Silica Glass Using Direct Laser Melting @article{Lei2019AdditiveMO, title={Additive Manufacturing of Fused Silica Glass Using Direct Laser Melting}, author={Jincheng Lei and Yuzhe Hong and Qi Zhang and Fei Peng and Hai Xiao}, journal={2019 Conference on
Selective Laser Melting (SLM) is a powder-based and laser assisted additive manufacturing technology capable to produce parts layer-by-layer from a 3D CAD model. Nowadays SLM is used in various industrial domains including aerospace, automotive, electronic, chemical and biomedical, as well as other high-tech areas.
Overview of DMLM. Direct Metal Laser Melting is an additive manufacturing technique also commonly known as Laser Powder Bed Fusion, Direct Metal Laser Sintering, Direct Metal Printing or Selective Laser Melting. As the name suggests, a high-powered laser welds metallic powders into fully dense metal parts at a resolution down to 25 microns (40
Abstract. Direct laser 3D printing of refractory materials such as silicon carbide (SiC), tungsten (W), and tantalum hafnium carbide (TaHfC) have been systematically investigated. High relative density has been achieved for SiC, SiC/Al, W, and W/TaHfC. High density SiC structures and W thin wall were also fabricated.
Direct metal laser melting (DMLM) is an additive manufacturing process that uses lasers to melt ultra-thin layers of metal powder to build a three-dimensional object. Objects are built
Energy density is a critical factor that directly impacts the porosities and microstructures of as-built parts in the selective laser melting process. The
In contrast, in the directed energy deposition method, the powder is directly deposited onto the melt pool formed by laser irradiation. Therefore, it is feasible to use a high-power laser and increase the manufacturing rate linearly with the laser power [
Quality control and quality assurance are challenges in direct metal laser melting (DMLM). Intermittent machine diagnostics and downstream part inspections catch problems after undue cost has been
Selective laser melting (SLM) is an additive manufacturing technology that uses a laser beam to melt powder materials together layer by layer for solid part fabrication. Due to its superior rapid prototyping capability of three-dimensional structures, SLM has been used for widespread industrial applications including aerospace, automotive,
An overview of densification, microstructure and mechanical property of additively manufactured Ti-6Al-4V—comparison among selective laser melting, electron
Selective Laser Melting (SLM) is a powder-based and laser assisted additive manufacturing technology capable to produce parts layer-by-layer from a 3D
The powder is selective laser melted by the device (HK–C250 fabricated by HuaKe 3D corporation, China, equipped with a CO 2 laser with a spot size 100 μm and a wavelength of 10.6 μm). A layer thickness of 70 μm is selected for this experiment. A zigzag strategy is adopted in the experiment.