Research on oxidation phenomenon during titanium machining and its prevention
Ikuo TANABE 1  
,   Yuya GOI 1,   Yuko TANABE 1
 
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Nagaoka University of Technology, Department of Mechanical Engineering, Nagaoka, Japan
Submission date: 2019-08-02
Acceptance date: 2019-10-02
Online publication date: 2020-06-24
Publication date: 2020-06-24
 
Journal of Machine Engineering 2020;20(2):77–85
 
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ABSTRACT
Over the last few decades, titanium alloys have become an important ingredient in many industrial sectors. In fact, titanium with additional characteristics, such as: high strength, heat resistance, low thermal conductivity, light weight and biocompatibility are being more and more used. However, the machining of titanium products tends to result in a thermal oxidation process and the development of a coloured layer. Therefore, a research regarding the thermal oxidation phenomena and its prevention was conducted. In this regard, cutting and grinding processes were experimentally investigated. Subsequently, L-ascorbic acid, a substance used against food oxidation, was used as an agent against oxidation during grinding. The main conclusions of the current study are the following; (1) Causes leading to the thermal oxidation during cutting and grinding were defined, (2) Prevention against oxidation was established by using L-ascorbic acid and strong alkaline water solution, (3) Optimum density of the solution with L-ascorbic acid and strong alkaline water was only 7.5 wt% for grinding.
PEER REVIEW INFORMATION
accepted
 
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