Cutting force and tool life models in end milling titanium alloy ti-4al-4v with thermally-assisted machining
Titanium and its alloys are known as difficult-to-cut material due to some circumstances, such as high chemical reactivity, low thermal conductivity, low modulus of elasticity, and high strength at elevated temperature. Furthermore, higher cutting force and lower tool life in machining of these al...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Trigin Publisher
2012
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/25009/1/cutting_force.pdf http://irep.iium.edu.my/25009/ |
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| Summary: | Titanium and its alloys are known as difficult-to-cut material due to some circumstances, such
as high chemical reactivity, low thermal conductivity, low modulus of elasticity, and high strength at
elevated temperature. Furthermore, higher cutting force and lower tool life in machining of these alloys are
very common. An approach to reduce the cutting force and increase the tool life is to employ
thermally-assisted machining. The working piece surface was heated up until a certain temperature just
before cutting. This paper presents an approach to establish mathematical models for cutting force and tool
life in end milling of titanium alloy Ti–6Al–4V using PCD inserts under thermally-assisted machining
using high frequency induction heating. Response surface methodology (RSM) was employed in
developing the cutting force and tool life models in relation to primary cutting parameters such as cutting
speed, feed, and preheating temperature. Design-expert software was applied to establish the first-order
and the second-order model and develop the contours. The adequacy of the predictive model was verified
using analysis of variance (ANOVA) at 95% confidence level |
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