Research on Improving the Outer Surface Quality of the Parts Made by SLM

Bâlc, Nicolae; Cosma, Cosmin; Kessler, Julia; Mager, Voicu

doi:10.4028/www.scientific.net/amm.808.199

Cited by 7 publications

(3 citation statements)

References 6 publications

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“…Samples with lower surface quality are often referred to as a deficiency of SLM processing of Mg alloys. This deficiency can be resolved by a detailed weld deposit analysis and the adjustment of the weld deposit overlap and input energy density, as with other materials [39][40][41]. The aim of this study is to clarify the effects of laser power and scan speed on the production process, to identify the dependence of size and continuity of weld tracks on energy density and to perform a basic analysis of surface quality, depending on the process parameters.…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Parameters on Processing of Biodegradable Magnesium Alloy WE43 via Selective Laser Melting Method

et al. 2020

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The global aim of the theme of magnesium alloy processing by the selective laser melting technology is to enable printing of replacements into the human body. By combining the advantages of WE43 magnesium alloy and additive manufacturing, it is possible to print support structures that have very similar properties to human bones. However, printing magnesium alloy parts is very difficult, and the printing strategies are still under development. Knowledge of weld deposit behaviour is needed to design a complex printing strategy and still missing. The main aim of the manuscript is the find a stable process window and identify the dependence of the weld deposit shape and properties on the laser power and scanning speed. The range of the tested parameters was 100–400 W and 100–800 mm/s for laser power and scanning speed. The profilometry and light microscopy were used to verify the continuity and shape evaluation. The microhardness and EDX analysis were used for the detailed view of the weld deposit. The manuscript specifies the weld deposit dimensions, their changes depending on laser power and scanning speed, and the continuity of the weld tracks. The stable weld deposits are made by the energy density of 5.5–12 J/mm2. Thin walls were also created by layering welds to determine the surface roughness scattering (Ra 35–60) for various settings of laser power and scanning speed.

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Section: Introductionmentioning

confidence: 99%

Effect of Laser Parameters on Processing of Biodegradable Magnesium Alloy WE43 via Selective Laser Melting Method

et al. 2020

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“…Knowing that the secondary containment of the dental implants is directly influenced by the quality of the surfaces, and the pieces manufactured through SLM showed initially a high Ra roughness (~ 10 µm) [13] . The optimization of the process parameters was performed using ANOVA method, and there were defined sets of the best parameters depending on the desired roughness values.…”

Section: Case Study -Customized Implants Fabricated By Slm Processmentioning

confidence: 99%

Research on Improving the Manufacturing of Titanium Medical Implants, by SLM

Cosma¹,

Leordan²

2015

BALNEO

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The purpose of this study was to improve the design and manufacturing process of new medical implants, by selective laser melting. After manufacturing process, the implants were measured, microscopically and mechanical analyzed. Implants fabricated by SLM can be an attractive option for surface coatings to improve the osseointegration process. SLM process change the way that the surgeons are planning surgeries and engineers are designing custom implants. This process eliminated the constraints of shape and mechanical characteristics for implants.

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“…Due to the branched structures of the cell, flow-changing measures can be initiated which cause turbulence. Since there is almost no scientific knowledge on the turbulence generation of lattice structures, this scientific work deals with the basics of the flow theory of lattice structures [10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Basic research of the consideration of additive manufactured lattice structures under thermoand fluid dynamic loads

Abbas

Thurn

Kessler³

et al. 2019

MATEC Web Conf.

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This scientific research deals with lattice structures manufactured with laser powder bed fusion. Laser powder bed fusion is part of additive manufacturing. The so called layered construction is an increasingly used innovative manufacturing process that can be used to realize new design possibilities. Lightweight structures or bionic structures play a key role here. The focus of this work is on periodic lattice structures. In addition to saving resources and reducing the weight of components, lattice structures have particularly pronounced mechanical properties. However, little is known about their thermo-and fluid-dynamic properties. This work describes the first influencing factors of lattice structures in a thermo-and fluid-dynamic context using a case study. The aim of this paper is to evaluate important design and simulation criteria of lattice structures. Different lattice structures are considered, whose strut geometry is varied. The case study is carried out using a heat exchanger. While classical heat exchangers have lamellar structures, the substitution of these by lattice structures is evaluated. This work represents a first consideration of the most important parameters and gives an overview of the most important core points.

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Research on Improving the Outer Surface Quality of the Parts Made by SLM

Cited by 7 publications

References 6 publications

Effect of Laser Parameters on Processing of Biodegradable Magnesium Alloy WE43 via Selective Laser Melting Method

Effect of Laser Parameters on Processing of Biodegradable Magnesium Alloy WE43 via Selective Laser Melting Method

Research on Improving the Manufacturing of Titanium Medical Implants, by SLM

Basic research of the consideration of additive manufactured lattice structures under thermoand fluid dynamic loads

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