Application of Stereolithography Based 3D Printing Technology in Investment Casting

Mukhtarkhanov, Muslim; Perveen, Asma; Talamona, Didier

doi:10.3390/mi11100946

Cited by 105 publications

(64 citation statements)

References 102 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ishida et al [21] tested the ability of different manufacturing methods to create dimensionally accurate full dental crowns, and they showed that all the methods had their respective drawbacks. The RIC processes, mainly using Stereolithography (SLA) can be found in a review [22].…”

Section: Literature Reviewmentioning

confidence: 99%

Analysis and Design of Lattice Structures for Rapid-Investment Casting

Richard

Kwok

2021

Materials

View full text Add to dashboard Cite

This paper aims to design lattice structures for rapid-investment casting (RIC), and the goal of the design methodology is to minimize casting defects that are related to the lattice topology. RIC can take full advantage of the unprecedented design freedom provided by AM. Since design for RIC has multiple objectives, we limit our study to lattice structures that already have good printability, i.e., self-supported and open-celled, and improve their castability. To find the relationship between topological features and casting performance, various lattice topologies underwent mold flow simulation, finite element analysis, casting experiments, and grain structure analysis. From the results, the features established to affect casting performance in descending order of importance are relative strut size, joint number, joint valence, and strut angle distribution. The features deemed to have the most significant effect on tensile and shear mechanical performance are strut angle distribution, joint number, and joint valence. The practical application of these findings is the ability to optimize the lattice topology with the end goal of manufacturing complex lattice structures using RIC. These lattice structures can be used to create lightweight components with optimized functionality for various applications such as aerospace and medical.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Analysis and Design of Lattice Structures for Rapid-Investment Casting

Richard

Kwok

2021

Materials

View full text Add to dashboard Cite

show abstract

“…The alternative to 3D printing would be to make the wax models manually, in which case the printing process allowed us to obtain greater reproducibility and better dimensional tolerances. Additionally, it should be remembered that SLA technology is also used to produce models intended for the traditional lost-wax casting process [16], allowing us in this case to obtain finished components with surface roughness identical to that obtained with wax models. However, the SLA technique is limited to small components due to the large deformations that would occur during the resin printing process and is usually used in the goldsmith and medical sectors [17], and the cost of the resin is also usually higher than that of FDM printing filaments.…”

Section: D Printing For Supporting the Component Manufacturing Processmentioning

confidence: 99%

Molds with Advanced Materials for Carbon Fiber Manufacturing with 3D Printing Technology

et al. 2021

View full text Add to dashboard Cite

Fused Deposition Modeling (FDM) 3D printing is the most widespread technology in additive manufacturing worldwide that thanks to its low costs, finished component applications, and the production process of other parts. The need for lighter and higher-performance components has led to an increased usage of polymeric matrix composites in many fields ranging from automotive to aerospace. The molds used to manufacture these components are made with different technologies, depending on the number of pieces to be made. Usually, they are fiberglass molds with a thin layer of gelcoat to lower the surface roughness and obtain a smooth final surface of the component. Alternatively, they are made from metal, thus making a single carbon fiber prototype very expensive due to the mold build. Making the mold using FDM technology can be a smart solution to reduce costs, but due to the layer deposition process, the roughness is quite high. The surface can be improved by reducing the layer height, but it is still not possible to reach the same degree of surface finish of metallic or gelcoat molds without the use of fillers. Thermoplastic polymers, also used in the FDM process, are generally soluble in specific solvents. This aspect can be exploited to perform chemical smoothing of the external surface of a component. The combination of FDM and chemical smoothing can be a solution to produce low-cost molds with a very good surface finish.

show abstract

“…Although stereolithography provides a practical technical way for the efficient and high-quality manufacturing of silica ceramic parts [22,23], there exist some research difficulties. Firstly, the forming mode of layer-by-layer curing can easily cause larger linear shrinkage [24], which will not only affect the mechanical properties of ceramic parts, but also limit the wide application of ceramic products [25,26].…”

Section: Introduction mentioning

confidence: 99%

Influence of Al2O3 content on mechanical properties of silica-based ceramic cores prepared by stereolithography

Wen

Chen

et al. 2021

J Adv Ceram

View full text Add to dashboard Cite

Silica ceramic cores have played an important part in the manufacture of hollow blades due to their excellent chemical stability and moderate high-temperature mechanical properties. In this study, silica-based ceramics were prepared with Al2O3 addition by stereolithography, and the influence of Al2O3 content on mechanical properties of the silica-based ceramics was investigated. The Al2O3 in silica-based ceramics can improve the mechanical properties by playing a role as a seed for the crystallization of fused silica into cristobalite. As a result, with the increase of Al2O3 content, the linear shrinkage of the silica-based ceramics first decreased and then increased, while the room-temperature flexural strength and the high-temperature flexural strength first increased and then decreased. As the Al2O3 content increased to 1.0 vol%, the linear shrinkage was reduced to 1.64% because of the blocked viscous flow caused by Al2O3. Meanwhile, the room-temperature flexural strength and the high-temperature flexural strength were improved to 20.38 and 21.43 MPa with 1.0 vol% Al2O3, respectively, due to the increased α-cristobalite and β-cristobalite content. Therefore, using the optimal content of Al2O3 in silica-based ceramics can provide excellent mechanical properties, which are suitable for the application of ceramic cores in the manufacturing of hollow blades.

show abstract

Application of Stereolithography Based 3D Printing Technology in Investment Casting

Cited by 105 publications

References 102 publications

Analysis and Design of Lattice Structures for Rapid-Investment Casting

Analysis and Design of Lattice Structures for Rapid-Investment Casting

Molds with Advanced Materials for Carbon Fiber Manufacturing with 3D Printing Technology

Influence of Al2O3 content on mechanical properties of silica-based ceramic cores prepared by stereolithography

Contact Info

Product

Resources

About