Additive Manufacturing of WC-Co by Indirect Selective Laser Sintering (SLS) using High Bulk Density Powders

• Autorzy: Gădălean Rares Vasile , Jucan Ovidiu-Darius , Chicinaş Horea , Bâlc Nicolae , Popa Catalin O.

Identyfikatory

DOI

10.24425/amm.2022.137793

• Języki publikacji: EN

Abstrakty

EN

Research in additive manufacturing of tungsten carbide-cobalt has intensified over the last few years due to the increasing need for products designed using topology optimisation and multiscale structures (lattice). These products result in complex shapes and contain inner structures that are challenging to produce through conventional techniques, thus involving high costs. The present work addresses this problem using a two-step approach to 3D print parts with complex shapes and internal structures by employing indirect selective laser sintering (SLS) and tungsten carbide-cobalt sintering. The paper takes further our research in this field [1] to improve the part density by using high bulk density tungsten carbide-cobalt powders. Mechanically mixing tungsten carbide-cobalt with the sacrificial binder, polyamide 12, results in a homogenous powder successfully used by the selective laser sintering process to produce green parts. By further processing, the green parts through a complete sintering cycle, an average final part density of 11.72 g/cm³ representing more than 80% of the theoretical density is achieved.

Słowa kluczowe

EN

additive manufacturing; selective laser sintering; cemented carbide; polyamide 12

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2022
• Tom: Vol. 67, iss. 2
• Strony: 577--585
• Opis fizyczny: Bibliogr. 29 poz., fot., rys., tab.

Twórcy

autor

Gădălean Rares Vasile

• Technical University of Cluj-Napoca, Department of Manufacturing Engineering, 103-105, Muncii Avenue, 400641 Cluj-Napoca, Romania
• Gühring Romania, 32 Constructorilor Street, 407035 Apahida, Romania

• https://orcid.org/0000-0002-6186-9207

autor

Jucan Ovidiu-Darius

• Technical University of Cluj-Napoca, Materials Science and Engineering Department, 103-105, Muncii Avenue, 400641 Cluj-Napoca, Romania

• https://orcid.org/0000-0002-5574-5873

autor

Chicinaş Horea

• Gühring Romania, 32 Constructorilor Street, 407035 Apahida, Romania
• Technical University of Cluj-Napoca, Materials Science and Engineering Department, 103-105, Muncii Avenue, 400641 Cluj-Napoca, Romania

• https://orcid.org/0000-0001-7150-8029

autor

Bâlc Nicolae

• Technical University of Cluj-Napoca, Department of Manufacturing Engineering, 103-105, Muncii Avenue, 400641 Cluj-Napoca, Romania

• https://orcid.org/0000-0002-5280-1454

autor

Popa Catalin O.

• Technical University of Cluj-Napoca, Materials Science and Engineering Department, 103-105, Muncii Avenue, 400641 Cluj-Napoca, Romania

• https://orcid.org/0000-0003-4188-1169

Bibliografia

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Uwagi

1. This work was supported by the European Development Fund and the Romanian Government through the Competitiveness Operational Programme 2014-2020, project ID P 34 466, MySMIS code 121349, contract no.5/05.06.2018. The generous support of the Gühring Company in making this work possible is highly acknowledged.

2. Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).