Development of Polishing Fluids for Titanium Alloy Using Lapping Tape – Effects of Components in the Polishing Fluids on Polishing Characteristics –
Hideyuki Tomoda* and Koichi Kitajima**
*Central Research Institute, NEOS Co.Ltd., 1-1 Oike-cho, Konan, Shiga 520-3213, Japan
**Department of Mechanical Engineering, Faculty of Science and Technology, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan
To polish to hard-to-cut titanium alloy (Ti-6Al-4V), a method employing a lapping tape is proposed and titanium alloy polishing fluids are developed. The effects of each of the components of a soluble polishing fluid on the polishing characteristics, such as surface roughness, tangential polishing resistance, and stock removal, are investigated through experiments. The results indicate that polishing only with a potassium oleate solution, which is a long-chain fatty acid solution, creates the best surface. A fatty acid is focused on, and the effects on the polishing characteristics of changing the carbon number are studied. As a result, it is found that surface roughness can be suppressed when titanium alloy is polished with only a fatty acid surfactant solution of carbon number 12 or higher.
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