Influence of different post treatments on tungsten carbide–cobalt inserts

Thakur, D. G.; Ramamoorthy, B.; Vijayaraghavan, L.

doi:10.1016/j.matlet.2008.07.043

Cited by 94 publications

(43 citation statements)

References 4 publications

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“…For this purpose, the samples are cooled down to liquid nitrogen temperature, held in that cool environment for some hours and then gradually warmed up to room temperature to prohibit severe thermal shocks [1,2]. The most important materials subjected to this add-on process (added to the conventional hardening process) are tool steels, including M2, 1.2080, T1 and HSS tools, as well as tungsten carbide components [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Investigating the effect of the quench environment on the final microstructure and wear behavior of 1.2080 tool steel after deep cryogenic heat treatment

2013

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Section: Introductionmentioning

confidence: 99%

Investigating the effect of the quench environment on the final microstructure and wear behavior of 1.2080 tool steel after deep cryogenic heat treatment

2013

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“…The different posttreatments that are tried out to the tungsten carbide-cobalt (WC-Co) tool are (a) controlled cryogenic treatment and (b) controlled heating and quenching in oil bath. The detailed investigations with respect to the mechanical characterizations of post-treated tools were published in the earlier paper by the same author's [15]. The machining experimental results indicate a remarkable response to all the above-mentioned posttreatments, and the analysis of the same are presented in the subsequent sections of the paper.…”

Section: Introductionmentioning

confidence: 90%

“…In WC-Co system, any disturbance in the stoichiometry of WC can result in the formation of hard and brittle phases like W 3 CO 3 C-and W 6 CO 6 C-phase equilibrium between WC and binder CO. These results in increased surface hardness for oil-quenched inserts [15].…”

Section: Microhardness Observationsmentioning

confidence: 98%

Effect of posttreatments on the performance of tungsten carbide (K20) tool while machining (turning) of Inconel 718

Thakur

Ramamoorthy

Vijayaraghavan

2014

Int J Adv Manuf Technol

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Inconel 718 is widely used in sophisticated engineering applications due to its unique properties such as high oxidation resistance and corrosion resistance even at high temperatures and retains a mechanical strength under these conditions as well. But machining such an exotic material is costly due to the rapid tool wear. An attempt has been made to improve the performance of cemented tungsten carbide (WC-Co, K20) tool through various posttreatments namely cryogenic treatment and controlled heating and oil quenching. The treated tools were evaluated for their properties through microhardness and X-ray diffraction technique (XRD). The treated tools were subjected to machining (turning) of difficult-to-cut material, i.e., superalloy Inconel 718 to check their performance enhancement. Results showed that post-treated tools performed better while machining (turning) of superalloy Inconel 718 indicating that selected posttreatments can be potential posttreatment methods for improving machining ability of cemented tungsten carbide tools.

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“…Thakur et al [58] highlighted that WC tools undergo a less-strong microstructural modification under cryogenic treatment compared to that detected with conventional heat treatments; some physical transformations actually occur concerning the densification of cobalt, which induces an increase in the gripping of carbide particles and an improvement in the tool life amounting to a wear resistance increase of 27%. The cryogenic treatment of the tool is one approach to enhance its properties by introducing microstructural changes.…”

Section: Cryogenic Machiningmentioning

confidence: 99%

The Critical Raw Materials in Cutting Tools for Machining Applications: A Review

et al. 2020

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A variety of cutting tool materials are used for the contact mode mechanical machining of components under extreme conditions of stress, temperature and/or corrosion, including operations such as drilling, milling turning and so on. These demanding conditions impose a seriously high strain rate (an order of magnitude higher than forming), and this limits the useful life of cutting tools, especially single-point cutting tools. Tungsten carbide is the most popularly used cutting tool material, and unfortunately its main ingredients of W and Co are at high risk in terms of material supply and are listed among critical raw materials (CRMs) for EU, for which sustainable use should be addressed. This paper highlights the evolution and the trend of use of CRMs) in cutting tools for mechanical machining through a timely review. The focus of this review and its motivation was driven by the four following themes: (i) the discussion of newly emerging hybrid machining processes offering performance enhancements and longevity in terms of tool life (laser and cryogenic incorporation); (ii) the development and synthesis of new CRM substitutes to minimise the use of tungsten; (iii) the improvement of the recycling of worn tools; and (iv) the accelerated use of modelling and simulation to design long-lasting tools in the Industry-4.0 framework, circular economy and cyber secure manufacturing. It may be noted that the scope of this paper is not to represent a completely exhaustive document concerning cutting tools for mechanical processing, but to raise awareness and pave the way for innovative thinking on the use of critical materials in mechanical processing tools with the aim of developing smart, timely control strategies and mitigation measures to suppress the use of CRMs.

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Influence of different post treatments on tungsten carbide–cobalt inserts

Cited by 94 publications

References 4 publications

Investigating the effect of the quench environment on the final microstructure and wear behavior of 1.2080 tool steel after deep cryogenic heat treatment

Investigating the effect of the quench environment on the final microstructure and wear behavior of 1.2080 tool steel after deep cryogenic heat treatment

Effect of posttreatments on the performance of tungsten carbide (K20) tool while machining (turning) of Inconel 718

The Critical Raw Materials in Cutting Tools for Machining Applications: A Review

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