Investigation of the surface quality and dimensional accuracy of polymer patterns produced by selective laser sintering (SLS) method for investment casting (IC)

Özer, Gökhan; Özbay, Burçin; Oter, Zafer Cagatay; Tarakçı, Gürkan; Yılmaz, Mustafa Safa; Bulduk, Mustafa Enes; Koç, Ebubekir; Acar, Serhat; Güler, Kerem Altuğ

doi:10.1080/13640461.2020.1773053

Cited by 18 publications

(10 citation statements)

References 21 publications

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“…Özer et al [75] used polystyrene powder as matrix material to prepare a polymer pattern by SLS technology. After the SLS process, plaster slurry was coated on the surface of the polymer pattern, and the ceramic shell required for casting was obtained by drying, pattern removal and sintering.…”

Section: Sls Forming Investment Casting Patternsmentioning

confidence: 99%

“…Fig. 12: SLS patterns and casting: (a) images of wax tree and (b) A356 samples after casting [75] (a) (b)…”

Section: Special Reviewmentioning

confidence: 99%

“…The dimensional accuracy and surface roughness of castings using coated sand molds are generally up to CT6-8 and 12.5-3.2 µm. The investment patterns are generally treated by infiltrating paraffin wax or resin to improve the strength and surface precision, which can be used to prepare stainless steel casting, aluminum alloy castings, etc [75,76,79] . The dimensional accuracy of obtained castings is generally up to CT6, and the surface roughness is generally below 6.3 µm.…”

Section: Special Reviewmentioning

confidence: 99%

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A review of additive manufacturing technology and its application to foundry in China

et al. 2021

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The application of additive manufacturing technology is one of the main approaches to achieving the rapid casting. Additive manufacturing technology can directly prepare casting molds (cores) with no need of patterns, and quickly cast complex castings. The combination of additive manufacturing and traditional casting technology can break the constraint of traditional casting technology, improve casting flexibility, and ameliorate the working environment. Besides, additive manufacturing promotes the realization of "free casting", greatly simplifying the processing procedures and shortening the manufacturing cycle. This paper summarizes the basic principle of additive manufacturing technology and its development situation domestically and overseas, mainly focusing on the development status of several main additive manufacturing technologies applicable to the foundry field, including three-dimensional printing, selective laser sintering, stereolithography, layered extrusion forming, etc. Finally, the future development trend of additive manufacturing technology in the foundry field is prospected.

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Section: Sls Forming Investment Casting Patternsmentioning

confidence: 99%

“…Fig. 12: SLS patterns and casting: (a) images of wax tree and (b) A356 samples after casting [75] (a) (b)…”

Section: Special Reviewmentioning

confidence: 99%

Section: Special Reviewmentioning

confidence: 99%

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A review of additive manufacturing technology and its application to foundry in China

et al. 2021

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“…Gökhan et al [50] prepared polystyrene patterns based on the SLS technique, and coated patterns with gypsum slurry to enhance surface quality. After drying, dewaxing and sintering, a gypsum-based ceramic shell was obtained.…”

Section: Sls Application In Investment Castingmentioning

confidence: 99%

“…The dimensional accuracy is generally CT6, and the surface roughness (Ra) is generally less than 6.3 µm [49], [50], [54] 5 Summary…”

Section: Sls Application In Investment Castingmentioning

confidence: 99%

Rapid casting technology based on selective laser sintering

et al. 2021

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Selective laser sintering (SLS), as a kind of additive manufacturing technology, which uses a laser beam to scan and heat powder material layer by layer to form parts (models), is widely used in the field of casting, mainly for preparing casting coated sand cores, investment casting patterns, etc. The SLS technique facilitates rapid casting and shortens the casting production periods by eliminating mold preparation. In this study, we reached conclusions for the basic principles and characteristics of SLS methods, and focused on the research status, key technology and development trend of SLS in the fields of forming coated sand-casting molds and investment casting patterns.

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Polymers for Additive Manufacturing

Xiao

Tey

et al. 2022

Encyclopedia of Polymer Science and Technology

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Additive manufacturing (AM), or 3D printing, has seen exponential growth in the past two decades, with more new techniques emerging and new materials available. AM was first established as an efficient technology for prototyping about four decades ago. Today, it is widely used in a variety of industries, including healthcare, automotive, aerospace, defense, and so on. Whilst AM is a general term, it consists of multiple drastically different techniques that need different forms of feedstock materials and processing conditions. This article reviews the current prevailing AM technology for polymers with a brief history, and then a focus on technological details, available materials, and the latest development for each method. The challenges and trends of AM toward next‐generation advanced manufacturing are also highlighted.

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Investigation of the surface quality and dimensional accuracy of polymer patterns produced by selective laser sintering (SLS) method for investment casting (IC)

Cited by 18 publications

References 21 publications

A review of additive manufacturing technology and its application to foundry in China

A review of additive manufacturing technology and its application to foundry in China

Rapid casting technology based on selective laser sintering

Polymers for Additive Manufacturing

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