Study on removal mechanism of steel bonded cemented carbide material GT35 in cutting process

CHEN Bochuan; SHAO Mengbo; GAO Xiaoxing; LI Qilin; YUAN Songmei

doi:10.13394/j.cnki.jgszz.2022.0038

Volume 42 Issue 5

Oct. 2022

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CHEN Bochuan, SHAO Mengbo, GAO Xiaoxing, LI Qilin, YUAN Songmei. Study on removal mechanism of steel bonded cemented carbide material GT35 in cutting process[J]. Diamond & Abrasives Engineering, 2022, 42(5): 626-636. doi: 10.13394/j.cnki.jgszz.2022.0038

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CHEN Bochuan, SHAO Mengbo, GAO Xiaoxing, LI Qilin, YUAN Songmei. Study on removal mechanism of steel bonded cemented carbide material GT35 in cutting process[J]. Diamond & Abrasives Engineering, 2022, 42(5): 626-636. doi: 10.13394/j.cnki.jgszz.2022.0038

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Study on removal mechanism of steel bonded cemented carbide material GT35 in cutting process

doi: 10.13394/j.cnki.jgszz.2022.0038

CHEN Bochuan^{1, 2, 3
,},
SHAO Mengbo^{1, 2, 3},
GAO Xiaoxing^{1, 2, 3},
LI Qilin^{1, 2},
YUAN Songmei^{1, 2, 3
,
,}

1.
School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
2.
Beijing Engineering Technological Research Center of High-Efficient and Green CNC Machining Process and Equipment, Beijing 100191, China
3.
Advanced Manufacturing Center, Ningbo Institute of Technology, Beihang University, Ningbo 315100, Zhejiang, China

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Received Date: 2022-04-07
Rev Recd Date: 2022-08-05

Abstract

Abstract

Single particle diamond cutting experiments are designed to research the micro scratching process and material removal mechanism of GT35 steel bonded cemented carbide. The value of linear scale coefficient k is estimated as well. The exact value of k is further confirmed by equal depth cutting experiment. Furthermore, the material removal approaches at different cutting depths are discussed by microscopic observation and three-dimensional morphology modeling by SEM and laser confocal microscope. It is observed that there is a linear functional relationship between cutting force and groove cross-sectional area. k (F_x) is 0.026 29 N/μm²(R₂=0.990 46) and k (F_z) is 0.046 42 N/μm²(R₂=0.994 08) after fitting. The quenched and tempered GT35 material is mainly plastic removal under various cutting depths, in which the bottom surface of the groove shows an obvious plastic shear removal state, and the edge shows a certain brittle removal state. During the cutting process, there will form a material stacking dead zone at the tool tip, causing tool edge collapse and wear. The formation of the surface morphology is closely related to tool wear.
- single abrasive grain cutting,
- steel bonded cemented carbide material GT35,
- cutting force model,
- material removal mode,
- grinding

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References(24)

References

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Study on removal mechanism of steel bonded cemented carbide material GT35 in cutting process

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