Investigation on Additive Manufacturing of Tungsten Carbide-cobalt by Selective Laser Melting

Uhlmann, Eckart; Bergmann, André; Gridin, Witalij

doi:10.1016/j.procir.2015.08.060

Cited by 134 publications

(85 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Kumar processed WC-Co parts with SLM, yet the samples were highly porous, and infiltration with bronze was necessary to reach a final relative density of 96%. 6 Ulmann et al 7 investigated a wide range of laser parameters and found that higher intensities led to thermal cracking while lower intensities yielded residual porosity in the printed WC-Co samples. Furthermore, a relatively high binder content (17 wt.%) was used to promote increased amounts of binder material between the WC particles, which is detrimental to the overall mechanical properties of the final product.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Cemented Tungsten Carbide with a Cobalt-Free Alloy Binder by Selective Laser Melting for High-Hardness Applications

Pittari

Kilczewski

et al. 2019

JOM

View full text Add to dashboard Cite

Cemented tungsten carbide (WC) is commonly used for wear-resistant applications, such as cutting tools and abrasives due to its extremely high hardness. This hardness leads to post-process machining of WC to be time-and cost-intensive. This study examined the feasibility of additive manufacturing of cemented WC to near-net-shape in an effort to reduce post-process machining. The binder phase in the manufactured samples is an iron-based alloy, which has a lower melting temperature than cobalt, the conventional binder in cemented WC. In this proof-of-concept study, cuboid specimens of WC with a low content of the iron-based alloy binder were printed; the effect of different processing conditions on the resultant density and microstructure of the material were investigated. Theoretical densities as high as 95% were achieved using this method. Artifacts indicative of the manufacturing process are present in the samples, and the challenges in removing the processing history from the final microstructure are discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Cemented Tungsten Carbide with a Cobalt-Free Alloy Binder by Selective Laser Melting for High-Hardness Applications

Pittari

Kilczewski

et al. 2019

JOM

View full text Add to dashboard Cite

show abstract

“…Research work on the production of tungsten carbide tools using additive manufacturing technologies is being carried out at Fraunhofer IPK [2] under the leadership of Professor E.…”

Section: Cutting Toolsmentioning

confidence: 99%

High Performance Cutting (HPC) in the New Era of Digital Manufacturing – A Roadmap

et al. 2016

View full text Add to dashboard Cite

We are rapidly moving into the new era of digitisation, into an era of the Massive Internet of Things -towards the Gigabit Society and towards 5G Technology. The implications are truly far reaching. Rapid transformation through the implementation of INDUSTRY 4.0 is becoming visible in industries all over the world. Disruption to the more traditional industrial practices and processes is inevitable. High Performance Cutting is no exception. Developments in the Internet of Things (IoT) opens up new and extremely powerful capabilities to help us gain a significantly deeper understanding of the fundamentals of cutting processes and offers entirely new connectivity possibilities at all interfaces, some old and some new, "between the Chip Root and the Cloud". This supports us in our attempts since the foundation of CIRP in 1951 to remove technological roadblocks and can lead on a new journey towards new and unprecedented scientific/technological developments as well as new business models for companies involved in the various elements of the supply chain for cutting processes (DIN 8580). "Performance" will take on a new and unanticipated meaning over what was originally meant when we established this CIRP-HPC Conference back in the early 2000's. In this paper a critical review of a previous roadmap is undertaken for cutting processes presented in a CIRP Keynote Paper in 2003 by Byrne, Dornfeld and Denkena [1] and new thoughts and ideas are presented on a vision for a 2020 skeleton Roadmap for High Performance Cutting in the new age of Digitisation.

show abstract

“…Another important advantage of the SLM process is the ability to produce elements made of materials with high melting points, e.g., tantalum [9], molybdenum [10], rhenium [11] and tungsten carbide [12], and to combine metallic powders of those materials with metals of significantly different physical properties. As the attempts of modifying mechanical properties of Ti and its alloys in the SLM process by additions of refractory metals such as Mo [13] and Re [14] appeared successful, this work considers further investigations of selective laser melted Ti-Re alloys.…”

Section: Introductionmentioning

confidence: 99%

Hot Corrosion of Ti–Re Alloys Fabricated by Selective Laser Melting

et al. 2017

View full text Add to dashboard Cite

Selective laser melting (SLM) is an additive manufacturing process that enables novel alloy production by combining metals with significantly different physical properties. In this paper, the hot corrosion behavior of Ti-Re alloys fabricated by SLM was studied in a mixture of Na 2 SO 4 and NaCl salts at 600°C. The morphology and composition of the corrosion products were characterized by scanning electron microscopy with energy-dispersive X-ray spectroscopy and X-ray diffraction to understand the degradation mechanisms. It has been shown that the hot corrosion resistance of Ti-Re alloys was influenced by the chemical inhomogeneity of the oxide scale resulting from the presence of rhenium particles undissolved during the SLM process.

show abstract

Investigation on Additive Manufacturing of Tungsten Carbide-cobalt by Selective Laser Melting

Cited by 134 publications

References 2 publications

Additive Manufacturing of Cemented Tungsten Carbide with a Cobalt-Free Alloy Binder by Selective Laser Melting for High-Hardness Applications

Additive Manufacturing of Cemented Tungsten Carbide with a Cobalt-Free Alloy Binder by Selective Laser Melting for High-Hardness Applications

High Performance Cutting (HPC) in the New Era of Digital Manufacturing – A Roadmap

Hot Corrosion of Ti–Re Alloys Fabricated by Selective Laser Melting

Contact Info

Product

Resources

About