Hot Machining with Cooled Cutting Tools

Akasawa, Tadahisa; Takeshita, Hideo; Uehara, Kunio

doi:10.1016/s0007-8506(07)62548-7

Cited by 7 publications

(4 citation statements)

References 2 publications

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“…Akasawa et al [6] use electric heating for hot machining of hard steel with cooled cutting tool. The application of hot machining is explained in two major fields.…”

Section: Introductionmentioning

confidence: 99%

Hot machining of Ti–6Al–4V: FE analysis and experimental validation

Parida

Maity

2019

Sādhanā

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Machining process is a nonlinear process where high stress, temperature and strain are generated in the primary and secondary shear zone. It is difficult to determine these parameters experimentally and also consumes time. In this study, finite-element method (FEM) is applied to hot machining of Ti-6Al-4V alloy using DEFORM software. The simulations are used to investigate the effect of heating temperature on cutting force, cutting temperature, stress, strain and chip morphology for various machining conditions. The predicted results are compared to results obtained in room temperature and hot machining conditions. From this analysis, it is observed that hot machining reduces the cutting force, and changes the chip morphology. To validate the simulation results, an experimental trial is performed and positive coherence is achieved.

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“…Akasawa et al [6] use electric heating for hot machining of hard steel with cooled cutting tool. The application of hot machining is explained in two major fields.…”

Section: Introductionmentioning

confidence: 99%

Hot machining of Ti–6Al–4V: FE analysis and experimental validation

Parida

Maity

2019

Sādhanā

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“…Uncoated P10 grade of cemented carbide was selected because it has been shown to have highest resistance to oxidation wear among the steel cutting grades [10]. Uncoated cermet with Ni-Co binder was also selected for its high resistance to oxidation [11]. CBN170 (Seco Tools) is a SiC whisker reinforced grade with 65 vol.% content of cBN and multi-modal grain size distribution specifically designed for machining superalloys.…”

Section: Experimental Workmentioning

confidence: 99%

Influence of oxygen on the tool wear in machining

et al. 2018

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High temperatures generated in machining are known to facilitate oxidation wear. A controlled atmosphere chamber was developed to investigate the effects of oxygen on tool wear and high speed machining tests were conducted on air and in argon. Cemented carbide, cermet and cubic boron nitride tooling was used on alloyed steel, hardened tool steel and superalloy Alloy 718. Machining in argon resulted in higher flank wear, higher cutting forces, and larger tool-chip contact length on the rake face. A temperature activated crater oxidation wear was discovered on boron nitride. Transmission electron microscopy of tools worn on air showed formation of nanocrystalline Al2O3 film on the rake when machining aluminium containing Alloy 718, while no oxide films was detectable in the other cases.

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“…As illustrated in figure 10, an air stream was used to remove the discontinuous chips at high cutting speeds. However, the air stream will also remove heat from the cutting tool [12]. Several cutting tests with a fine depth of cut have been done and the cutting conditions were selected at a constant depth of cut of 0.025 mm with various cutting speeds.…”

Section: The Temperature Of a Cutting Toolmentioning

confidence: 99%

Measurement of cutting tool temperature by an infrared pyrometer

Lin¹,

Liu²

2001

Meas. Sci. Technol.

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An infrared (IR) pyrometer system with an optical fibre was developed for measuring the temperature of a cutting tool during turning. The temperature reading of the pyrometer system was compared with the micrographs of the tool steels under welding conditions similar to those of cutting. It can be seen that the temperature of the tool measured by the IR pyrometer with an optical fibre is more accurate than that obtained by other on-line methods such as the conventional thermocouple technique. A one-dimensional ellipsoidal mapping system based on a model mapping of the temperature contours in the cutting tool was adopted in this study. It was used as an extrapolation scheme to predict the tool-chip temperature from the surface temperature measured near the cutting edge. There is a good agreement between the calculations and the metallurgical evidence for ceramic and carbide tools at cutting speeds up to 600 m min −1 .

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Hot Machining with Cooled Cutting Tools

Cited by 7 publications

References 2 publications

Hot machining of Ti–6Al–4V: FE analysis and experimental validation

Hot machining of Ti–6Al–4V: FE analysis and experimental validation

Influence of oxygen on the tool wear in machining

Measurement of cutting tool temperature by an infrared pyrometer

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