Substitution of commercially coated tungsten carbide tools in dry cylindrical turning process by HiPIMS coated niobium carbide cutting inserts

Uhlmann, Eckart; Hinzmann, Daniel; Kropidlowksi, K.; Meier, P.; Prasol, Lukas; Woydt, Mathias

doi:10.1016/j.surfcoat.2018.07.105

Cited by 7 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are also some studies on tool life that focus on the substrate. For example, in the study carried out by Uhlmann et al [79], the substitution of commercially coated tungsten carbide tools in the dry cylindrical turning process with HiPIMS-coated niobium carbide cutting inserts is proposed. These niobium coatings have shown potential in the machining of iron-based materials.…”

Section: Tool Lifementioning

confidence: 99%

Recent Advances in Turning Processes Using Coated Tools—A Comprehensive Review

Sousa

Silva

2020

Metals

View full text Add to dashboard Cite

Turning continues to be the largest segment of the machining industry, which highlights the continued demand for turned parts and the overall improvement of the process. The turning process has seen quite an evolution, from basic lathes using solid tools, to complex CNC (Computer Numerical Control) multi-process machines, using, for the most part, coated inserts and coated tools. These coatings have proven to be a significant step in the production of high-quality parts and a higher tool life that have captivated the industry. Continuous improvement to turning coated tools has been made, with many researches focusing on the optimization of turning processes that use coated tools. In the present paper, a presentation of various recently published papers on this subject is going to be made, mentioning the various types of coatings that have recently been used in the turning process, the turning of hard to machine materials, such as titanium alloys and Inconel, as well as the interaction of these coatings with the turned surfaces, the wear patterns that these coatings suffer during the turning of materials and relating these wear mechanisms to the coated tool’s life expectancy. Some lubrication conditions present a more sustainable alternative to current methods used in the turning process; the employment of coated tool inserts under these conditions is a current popular research topic, as there is a focus on opting for more eco-friendly machining options.

show abstract

Section: Tool Lifementioning

confidence: 99%

Recent Advances in Turning Processes Using Coated Tools—A Comprehensive Review

Sousa

Silva

2020

Metals

View full text Add to dashboard Cite

show abstract

“…HSSs have excellent toughness and fracture resistance. WC-Co has high hardness and compressive strength [4][5][6][7]. During the service of the HSS and WC-Co and components, the direct sliding contact could lead to the wear losses and damages [2,8,9].…”

Section: Introductionmentioning

confidence: 99%

Wear Mechanism and Life Map Construction of Nitride Coatings on Different Substrates

Luo

Huang³

2022

Coatings

View full text Add to dashboard Cite

The sliding wear and failure behaviors of CrN and AlTiN coatings on high speed steel (HSS) and cemented carbide (WC-Co) were investigated on a reciprocating test machine under different normal forces (30–120 N). The wear mechanism was explored based on the analysis of coefficient of friction (CoF), wear and damage of coating. Then, the coating service life maps were established and the factors affecting the coating life were explored. The results indicated that the bonding strength of coatings to the WC-Co substrate were larger than those to the HSS substrate. The CoFs of CrN fluctuated during the wear process, while CoFs of AlTiN coatings were closer to those of the uncoated substrates. The wear depths of coated samples were smaller than those of uncoated substrates. The wear depths were small when the coatings worked and then increased with the number of cycles and the normal forces. For the CrN coatings, they had longer service life under smaller normal forces than under the large forces. Under small forces, an adhesion layer derived from the wear debris was formed on the coating surface to reduce the wear at the beginning of the test, after that the main failure mechanism was abrasive wear and delamination. Under large forces, the main failure mechanism was spallation. For the AlTiN coatings, the main failure mechanism was spallation on the HSS substrate; however, on the WC-Co substrate it was adhesive and abrasive wear. The coatings (CrN and AlTiN) on WC-Co had longer service life under various normal forces than on the HSS. CrN coating has the better wear-resistance than AlTiN coatings.

show abstract

Effect of different binders and secondary carbides on NbC cermets

Hübler

Gradt

2022

Forsch Ingenieurwes

View full text Add to dashboard Cite

Due to the rapidly increasing price of tungsten carbide and the significant health risks associated with the wear products of WC-Co (Co3O4 and Wo3), an alternative is required. Niobium carbide (NbC) is well suited as a cutting tool due to its high melting point and low solubility in iron. Compared to pure NbC, a complete substitution of WC to NbC-Co resulted in an increased toughness and strength. As alternative binders, nickel and iron-based binders were subsequently investigated. Although iron-based cermets would be an economical, low-cost alternative to NbC-Ni cermets, they showed a higher coefficient of friction and wear rate. So far, NbC-Ni cermets best met the requirements of high hardness and toughness. Various secondary carbides such as VC, Mo2C, TiC, but also WC were added to further improve the hardness. Elemental analyses of NbC-Ni-MeC cermets (Me = metal) showed that the binder is a face-centered cubic solid solution, while the NbC phase is a solid solution of the type (Nb, Me)C.

show abstract

Substitution of commercially coated tungsten carbide tools in dry cylindrical turning process by HiPIMS coated niobium carbide cutting inserts

Cited by 7 publications

References 14 publications

Recent Advances in Turning Processes Using Coated Tools—A Comprehensive Review

Recent Advances in Turning Processes Using Coated Tools—A Comprehensive Review

Wear Mechanism and Life Map Construction of Nitride Coatings on Different Substrates

Effect of different binders and secondary carbides on NbC cermets

Contact Info

Product

Resources

About