HPC-milling of WC-Co cemented carbides with PCD

Hintze, Wolfgang; Steinbach, Stefan; Susemihl, Claudia; Kähler, Falko

doi:10.1016/j.ijrmhm.2017.12.019

Cited by 20 publications

(6 citation statements)

References 7 publications

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“…Hence, this unconventional way, Electrical Discharge Machining (EDM) can be a way out to shape it precisely [1]. A limited number of traditional methods exist for machining tungsten carbide, for example turning [2], milling [3] and grinding [4].…”

Section: Introductionmentioning

confidence: 99%

Influence of generator parameters on cutting width during WEDM process

Šimna

2024

J. Phys.: Conf. Ser.

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The primary objective of this paper is to rigorously analyse the influence of selected parameters on the cut width in the context of Wire Electric Discharge Machining (WEDM). The parameters under investigation, each varied at different levels, include pulse width, servo reference mean voltage, time interval between two pulses, discharge frequency, and wire feed speed. As the workpiece material, sintered carbide K10 was used. Data for the response variable, cut width, was meticulously collected using two high-precision instruments: the Zoller Genius 3s and the Alicona InfiniteFocusSL. Among the parameters studied, the mean reference voltage emerged as the most influential variable. It holds a commanding lead with a percentage contribution of as much as 82.4 %, making it nearly 15 times more impactful than the second most influential parameter, which is pulse width. At its lowest setting, or first level, the mean reference voltage results in a record low cut width. Conversely, at its highest setting, or third level, it leads to a record high cut width. This comprehensive analysis not only quantifies the relative importance of each parameter but also provides valuable insights into the optimal settings for achieving desired cut widths. The findings have significant implications for improving the efficiency and precision of WEDM processes.

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Section: Introductionmentioning

confidence: 99%

Influence of generator parameters on cutting width during WEDM process

Šimna

2024

J. Phys.: Conf. Ser.

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“…Micromilling of cemented carbide also attracts more and more attention due to its great potential in industrial applications [ 23 ]. Suzuki et al [ 24 ] developed the PCD tool with twenty cutting edges to machine the aspheric lens mold made of cemented carbide.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Direct Micro Milling of Cemented Carbide

et al. 2019

Micromachines

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Cemented carbide is currently used for various precise molds and wear resistant parts. However, the machining of cemented carbide still is a difficult challenge due to its superior mechanical properties. In this paper, an experimental study was conducted on direct micro milling of cemented carbide with a polycrystalline diamond (PCD) micro end mill. The cutting force characteristics, surface formation, and tool wear mechanisms were systematically investigated. Experimental results show that cemented carbide can be removed with ductile cutting utilizing the PCD tool with a large tool tip radius. Micro burrs, brittle pits, and cracks are the observed surface damage mechanisms. The tool wear process presents microchipping on the cutting edge and exfoliating on the rake face in the early stage, and then severe abrasive and adhesive wear on the bottom face in the following stage.

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“…It was feasible to achieve ductile chips of up to 25 μm for the WC-17.5Co, which is significantly higher than what is suggested by the earlier investigations. Hintze et al [10] implemented an HPC milling of WC-Co cemented carbides with PCD tools. They suggested that the milling of tungsten carbides is a promising alternative to EDM and grinding.…”

Section: Introductionmentioning

confidence: 99%

An inverse-identification-based finite element simulation of orthogonal cutting tungsten carbide

Zhao

Khan

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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Modeling and simulation using finite element method (FEM) is a powerful estimation tool and has been greatly helpful to study the metal cutting process, such as investigation of cutting mechanism, optimization of cutting parameters, and design of cutting tools. Thereinto, an effective material model and its parameters are still key problems in the FEM-modeling of metal cutting. In this paper, a 2D FE model for simulating the orthogonal cutting of tungsten carbide WC-17.5Co is developed, in which an inverse identification approach is used to identify the parameters of material model based on orthogonal cutting experiments. The commercially available software DEFORM V11.0 is utilized to develop the FE model, whereas the Johnson-Cook model and Brozzo model are selected as the constitutive model and the fracture model of the work material, respectively. Continuous serrated chip formation is obtained in experiments as well as in FE simulations. The simulated chip morphology, cutting force, and specific cutting force are compared with the experimental results to identify the parameters of the material model. It is found that the chip morphology is more difficult to be used to identify inversely the material model parameters than the cutting force and specific cutting force. The material model parameters are derived, and the verification tests show that there is a close agreement between the simulated and experimental results through comparisons of cutting force and specific cutting force. It indicates that the inversely identified parameters of the Johnson-Cook model and the Brozzo model can be used to describe the mechanical property of tungsten carbide.

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HPC-milling of WC-Co cemented carbides with PCD

Cited by 20 publications

References 7 publications

Influence of generator parameters on cutting width during WEDM process

Influence of generator parameters on cutting width during WEDM process

Experimental Investigation on Direct Micro Milling of Cemented Carbide

An inverse-identification-based finite element simulation of orthogonal cutting tungsten carbide

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