Research on the theoretical model of the rake face wear of carbide cutting tool

Chen, Jinguo; Zheng, M.Y.; Zhang, Wei; Sun, Yushuang; Tang, Qingming

doi:10.1007/s00170-018-2303-4

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…Finally, the material hardness is determined by the ratio of the maximum load and the equivalent contact area. The formula for calculating material hardness by OP method is shown in equation (3).…”

Section: Principle and Methods Of Hardness Calculationmentioning

confidence: 99%

“…Due to its ability to maintain good cutting performance at high temperatures, cemented carbide is widely used in manufacturing. 1 Under the conditions of heavy cutting and high-speed cutting, the high temperature and pressure causes element diffusion between the tool and the chip, [2][3][4] and the microstructure and components of the tool and chip contact area change. 5 This leads to a decline in the mechanical properties of the tool.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on hardness testing of cemented carbide tool based on finite element method

Gao

Zheng

Chen

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Hardness is a critical mechanical property of cutting tools, which significantly affects the cutting performance and wear resistance. Therefore, it is of great significance to obtain the hardness of the tool surface accurately. This paper presents a method based on finite element method (FEM) for studying the hardness of carbide tools. The microstructure of the carbide tool is obtained by scanning electron microscope(SEM). Combined with stereo principle, and secondary treatment, a three-dimensional multi-crystal model of carbide tool and indentation is established, and the model and hardness value obtained by different calculation methods are verified by microhardness test. The results show that the real hardness of the cemented carbide tool can be obtained by the indentation FEM model. The hardness values of cemented carbide tools are then calculated by the traditional method, Oliver-Pharr (OP) method and indentation method, respectively. It is found that the hardness value of the traditional method is the largest and fluctuates greatly, while the hardness values calculated by the OP method and indentation method are similar, and the fluctuation range of the hardness value calculated by the OP method is larger. In conclusion, the hardness calculated by the indentation work method is the best.

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Section: Principle and Methods Of Hardness Calculationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on hardness testing of cemented carbide tool based on finite element method

Gao

Zheng

Chen

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

Self Cite

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“…In fact, bond breakage is commonplace in many popular iron-carbon alloys, nickel-based alloys and titanium alloys. After cutting stainless steel and other materials with cemented carbide tools, some scholars pointed out that the element diffusion of congeners will bond the chips with the rake face and the loss of tungsten will reduce the hardness of tool material, leading to bond breakage [1][2][3][4]; In addition, they also conducted a series of diffusion experiments, established the theoretical model of element diffusion in the tool, and determine the damage threshold. Through the cutting of 508III steel with cemented carbide tools, Cheng et al [5] identified the bonding layer formed on the tool-chip interface, under the action of force-thermal coupling field, as the fundamental cause of bond breakage, and concluded that bond breakage of cemented carbide tools is a shared problem in the cutting of various chip materials.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Element Diffusion on Bond Breakage of Cemented Carbide Cutter

Zheng¹,

Gao²,

Chen³

et al. 2019

ACSM

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To disclose the impacts of element diffusion on bond breakage of cemented carbide cutter, this paper establishes a rational microscale model of cemented carbide and 2.25Cr1Mo0.25V, in the light of the working conditions in the cutting process. Drawing on the molecular dynamics (MD) theory, the MD simulation was carried out to set up the deterioration layer model of cemented carbide cutter. Then, the author computed the bonding energy and interaction parameters between WC and other elements (e.g. Co, Fe, Cr, Mo and V). The results show that element diffusion will happen between cemented carbide and 2.25Cr1Mo0.25V in the temperature range of the bond failure; In the temperature range of the bond failure, the WC can form a stable alloy with proper concentrations of Co and other elements in the 2.25Cr1Mo0.25V; Fe is the leading influencing factor on the bonding ability of WC particles in the cemented carbide deterioration layer.

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