The HSC machining mechanism for TC17 under multimedia mixed minimum quantity lubrication

The HSC machining mechanism for TC17 under multimedia mixed minimum quantity lubrication This study is intended to fill up the deficiency of the high-speed cutting (HSC) machining mechanism for TC17 Ti alloy. In this study, as the study object, TC17 Ti alloy is placed in room temperature (20 °C), ultra-low temperature (− 60 °C), and ultra-high temperature (350 °C) for HSC experiment, respectively, both through single-medium minimum quantity lubrication (SMMQL) and oil-water minimum quantity lubrication (OWMQL). The experimental results show that the main cutting force decreases by 33% during oil-medium MQL to 50% during water-medium MQL as compared to machining during dry cutting at room temperature; the cutting force decreases by 25% at the low temperature to 55% at the high temperature as compared to machining during OWMQL at room temperature; the cutting roughness decreases by 27% at the low temperature to 43% at the high temperature as compared to machining during OWMQL at room temperature. In the temperature of − 60 °C, the abrasion of the cutter mainly shows thermal cracking and adhesive wear during dry cutting. The cutter mainly shows crater wear during SMMQL of water; the abrasion mainly shows boundary and notching wear during SMMQL of oil, and the cutter also presents self-repairing function. In the temperature of − 60 °C, cutting layer TC17 titanium alloy produced a large dislocation, chip form appears collapse broken chip during OWMQL. In room temperature, there are more coarse second-phase precipitated in the cutting layer metal, the chip form is cracked during OWMQL. In the temperature of 350 °C, the material properties of the TC17 titanium alloy of the cutting layer will be restored to the state after the solution treatment in a short time. A large amount of the diffuse phase disappears. At the same time, grain boundaries show excellent continuity, and the Guinier-Preston enrichment area formed in the grain boundary, and the chip form exhibits a crumb during OWMQL. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The International Journal of Advanced Manufacturing Technology Springer Journals

The HSC machining mechanism for TC17 under multimedia mixed minimum quantity lubrication

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer-Verlag London Ltd.
Subject
Engineering; Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design
ISSN
0268-3768
eISSN
1433-3015
D.O.I.
10.1007/s00170-017-1084-5
Publisher site
See Article on Publisher Site

Abstract

This study is intended to fill up the deficiency of the high-speed cutting (HSC) machining mechanism for TC17 Ti alloy. In this study, as the study object, TC17 Ti alloy is placed in room temperature (20 °C), ultra-low temperature (− 60 °C), and ultra-high temperature (350 °C) for HSC experiment, respectively, both through single-medium minimum quantity lubrication (SMMQL) and oil-water minimum quantity lubrication (OWMQL). The experimental results show that the main cutting force decreases by 33% during oil-medium MQL to 50% during water-medium MQL as compared to machining during dry cutting at room temperature; the cutting force decreases by 25% at the low temperature to 55% at the high temperature as compared to machining during OWMQL at room temperature; the cutting roughness decreases by 27% at the low temperature to 43% at the high temperature as compared to machining during OWMQL at room temperature. In the temperature of − 60 °C, the abrasion of the cutter mainly shows thermal cracking and adhesive wear during dry cutting. The cutter mainly shows crater wear during SMMQL of water; the abrasion mainly shows boundary and notching wear during SMMQL of oil, and the cutter also presents self-repairing function. In the temperature of − 60 °C, cutting layer TC17 titanium alloy produced a large dislocation, chip form appears collapse broken chip during OWMQL. In room temperature, there are more coarse second-phase precipitated in the cutting layer metal, the chip form is cracked during OWMQL. In the temperature of 350 °C, the material properties of the TC17 titanium alloy of the cutting layer will be restored to the state after the solution treatment in a short time. A large amount of the diffuse phase disappears. At the same time, grain boundaries show excellent continuity, and the Guinier-Preston enrichment area formed in the grain boundary, and the chip form exhibits a crumb during OWMQL.

Journal

The International Journal of Advanced Manufacturing TechnologySpringer Journals

Published: Oct 23, 2017

References

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