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티타늄 소재 극저온 가공 시 극미량 윤활 조건에 따른 가공 특성 분석 연구

Study on the Effect of MQL Spraying Condition on the Machinability in Titanium Cryogenic Machining

Journal of the Korean Society for Precision Engineering 2023;40(4):261-267.
Published online: April 1, 2023

1 한국생산기술연구원 동남본부 진주뿌리기술지원센터

2 낙원㈜

3 한국생산기술연구원 대경본부

4 한국항공우주산업㈜ KFX사업본부

5 경남대학교 기계공학부

1 Korea Institute of Industrial Technology

2 Nakwon Co., Ltd.

3 Korea Institute of Industrial Technology

4 Korea Aerospace Industries Co., Ltd.

5 School of Mechanical Engineering, Kyungnam University

#E-mail: doyoungk@kyungnam.ac.kr, TEL: +82-55-249-2685
• Received: December 7, 2022   • Revised: January 3, 2023   • Accepted: January 5, 2023

Copyright © The Korean Society for Precision Engineering

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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  • Design and Development of a Real-Time AI-Based Tool Failure Prediction System for Machining Difficult-to-Cut Materials
    Mi-Ru Kim, Hoon-Hee Lee, Min-Suk Park, Wang-Ho Yun
    Journal of the Korean Society of Manufacturing Technology Engineers.2025; 34(4): 225.     CrossRef

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Study on the Effect of MQL Spraying Condition on the Machinability in Titanium Cryogenic Machining
J. Korean Soc. Precis. Eng.. 2023;40(4):261-267.   Published online April 1, 2023
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Study on the Effect of MQL Spraying Condition on the Machinability in Titanium Cryogenic Machining
J. Korean Soc. Precis. Eng.. 2023;40(4):261-267.   Published online April 1, 2023
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Study on the Effect of MQL Spraying Condition on the Machinability in Titanium Cryogenic Machining
Image Image Image Image Image Image Image
Fig. 1 Spraying mechanisms of (a) external, (b) internal, and (c) indirect methods in cryogenic machining
Fig. 2 Cryogenic machining tool including indirect spraying system
Fig. 3 Experimental setup for the cryogenic+MQL machining process
Fig. 4 Measured cutting forces according to machining distance
Fig. 5 Measured cutting forces at short (1-5 passes) and long (82-86 passes) machining distances
Fig. 6 Schematic diagrams of tool temperature changes under different cooling conditions
Fig. 7 Flank faces of cutting tools at the machining distance of 86 passes under (a) wet, (b) cryogenic+MQL with 1 nozzle, and (c) cryogenic+MQL with 2 nozzle conditions
Study on the Effect of MQL Spraying Condition on the Machinability in Titanium Cryogenic Machining

Experimrental condition

Parameter Value
Work material Ti-6Al-4V
Machining type Down milling
Cooling condition Wet,
Cryogenic+MQL (1 nozzle),
Cryogenic+MQL (2 nozzle)
Tool diameter [mm] 16
Flute 6
Cutting speed [m/min] 90 (1,790 rpm)
Feed [mm/tooth] 0.08 (859 mm/min)
Axial depth [mm] 5
Radial depth [mm] 1
Number of pass 86
Table 1 Experimrental condition