Study on the indirect selective laser sintering (SLS) of WC-Co/PA12 powders for the manufacturing of cemented carbide parts

Jucan, Ovidiu  Darius; Gădălean, R.V.; Chicinaş, H.F.; Hering, Martin; Bâlc, Nicolae; Popa, Cătălin

doi:10.1016/j.ijrmhm.2021.105498

Cited by 23 publications

(25 citation statements)

References 21 publications

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“…In addition to the SLM, SEBM and BJ technologies mentioned in this article, many researchers have explored other methods of producing complex pure copper parts, such as SLS [24], UAM [118], LMD [117] technology, etc. The technologies like SLS and BJ are known as two-step processes, through printing to get green body, and then through post-processed in a separate operation or sintering to achieve full density [119]. SLS technology originated in the 1980s.…”

Section: Prospect and Challenge Of 3d Printing In Pure Coppermentioning

confidence: 99%

A Review on Additive Manufacturing of Pure Copper

Jiang

Zhang

et al. 2021

Coatings

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With the development of the aerospace and automotive industries, high heat exchange efficiency is a challenge facing the development of various industries. Pure copper has excellent mechanical and physical properties, especially high thermal conductivity and electrical conductivity. These excellent properties make pure copper the material of choice for the manufacture of heat exchangers and other electrical components. However, the traditional processing method is difficult to achieve the production of pure copper complex parts, so the production of pure copper parts through additive manufacturing has become a problem that must be overcome in industrial development. In this article, we not only reviewed the current status of research on the structural design and preparation of complex pure copper parts by researchers using selective laser melting (SLM), selective electron beam melting (SEBM) and binder jetting (BJ) in recent years, but also reviewed the forming, physical properties and mechanical aspects of pure copper parts prepared by different additive manufacturing methods. Finally, the development trend of additive manufacturing of pure copper parts is also prospected.

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Section: Prospect and Challenge Of 3d Printing In Pure Coppermentioning

confidence: 99%

A Review on Additive Manufacturing of Pure Copper

Jiang

Zhang

et al. 2021

Coatings

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“…Materials that are commonly used in SLS include mainly polyamides (nylons), especially PA11 and PA12. It is significantly older than the Multi Jet Fusion technology, as it was initially developed as early as 1986 [11]. It belongs to the same family as MJF (powder bed fusion); hence it is listed here for comparison.…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Material Type and the Placement in the Print Chamber on the Roughness of MJF-Printed 3D Objects

Dzienniak

2022

Machines

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This paper describes a surface-roughness study performed on samples manufactured additively using the Multi Jet Fusion (MJF) technology. The samples were divided into three groups based on the material used in the process: polypropylene (PP), thermoplastic polyurethane (TPU), and polyamide 11 (PA11). Subsequently, they were tested by means of a roughness-measuring system, which made it possible to determine the typical surface roughness parameters (Ra, Rq, Rz). The tests were designed to examine whether the placement and orientation of 3D objects while printing, in connection with the material used, can significantly influence the surface quality of MJF-printed objects. The results show that the TPU samples have a surface roughness much higher than the PP and PA11 ones, which exhibit roughness levels very similar to each other. It can also be concluded that surfaces printed vertically (along the Z-axis) tend to be less smooth—similarly to the surfaces of objects made of TPU located in the central zones of the print chamber during printing. This information may be of value in cases where low surface roughness is preferred (e.g., manufacturing patient-specific orthoses), although this particular study does not focus on one specific application.

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“…Another advantage of powder metallurgy is the wide range of adjustment of the chemical composition, sinter properties and structure. Unfortunately, when analyzing this technology, some disadvantages can be encountered, including the difficulty in obtaining complex-shaped material due to uneven pressure distribution during pressing [ 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Application of U-FAST Technology in Sintering of Submicron WC-Co Carbides

et al. 2023

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This article presents the microstructure, hardness, fracture toughness coefficient KIC and phase composition of submicron WC-4Co carbides. The carbides were sintered using the innovative U-FAST (Upgraded Field Assisted Sintering Technology) method, from mixtures of WC-Co powders with an average WC grain size of 0.4 µm and 0.8 µm. The obtained sinters were characterized by a relative density above 99% of the theoretical density. The hardness of the obtained composites was above 2000 HV30, while the KIC coefficient was about 8 MPa m1/2.

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Study on the indirect selective laser sintering (SLS) of WC-Co/PA12 powders for the manufacturing of cemented carbide parts

Cited by 23 publications

References 21 publications

A Review on Additive Manufacturing of Pure Copper

A Review on Additive Manufacturing of Pure Copper

The Influence of the Material Type and the Placement in the Print Chamber on the Roughness of MJF-Printed 3D Objects

Application of U-FAST Technology in Sintering of Submicron WC-Co Carbides

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