1. SOMKIAT THERMSUK - Department of Industrial Technical Education, Faculty of Technical Education, Rajamangala University of
Technology Isan Khonkaen Campus, Thailand, 150 Srichan Rd., Muang, KhonKaen, Thailand.
2. WIROJ THASANA - Department of Mechanical Engineering, Faculty of Agriculture and Technology, Rajamangala University of
Technology Isan Surin Campus, Thailand, 145 Surin-Prasat Rd., Nokmuang, Muang, Surin, Thailand.
3. PRAMOT SRINOI - Department of Industrial Engineering, Faculty of Engineering, Kasem Bundit University Rom Klao Campus,
Thailand, 60 Rom Klao Rd., Min Buri, Bangkok, Thailand.
4. PICHAI JANMANEE - Department of Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology
Krungthep, Thailand, 2 Nang Linchi Rd., Tung Maha Mek, Satorn, Bangkok, Thailand.
5. SUWIT THAMMASANG - Department of Industrial Technical Education, Faculty of Technical Education, Rajamangala University of
Technology Isan Khonkaen Campus, Thailand, 150 Srichan Rd., Muang, KhonKaen, Thailand.
The research undertaken delves deeply into engineering exploration of surface lapping, primarily focusing on statistically analyzing the hardness via ANOVA. This research was studied the Influence of Alumina Powder on Surface Quality in Lapping Process on the C3604 Brass Material Utilizing Factorial Experimental Design and Analysis. Design and analysis of experiment (DOE) about factorial experiment was applied to analyze the four-Alumina Powder size of 0.05, 0.30, 1.00, and 3.00 µm and nine-lapping time of 30, 60, 90, 120, 150, 180, 210, 240 and 270 min, respectively. These multi-responses of factorial experiment were the weight loss and three Ra-value (e.g. the Ra-value on x-axial, the Ra-value on y-axial, and the Ra-value on cross-axial) which analyzed to effect surface quality of brass C3604 on lapping process. In preparing specimen condition of surface roughness for experimental, were used the alumina powder of 200gram alumina powder lubricant of 150millilitre and water of 1 liter. Finally, the statistical analysis result of optimized the lower multi-response (e.g. the weight loss of 0.0730 µm, the Ra-value on x-axial of 0.1198 µm, the Ra-value on y-axial of 0.1834, and the Ra-value on cross-axial of 0.1838 µm, respectively.) was exhibited the alumina powder size of 0.30 µm and the lapping time of 210 min. These statistical analyses were shown the satisfaction value. (Desirability: D) with regard to statistical processing, it was found that the value was as high as 83.80%.
Lapping Process, Weight Loss, Surface Roughness, Factorial Experiment.