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논문 기본 정보

자료유형
학술저널
저자정보
Hyoung-Tae Lee (Kyungnam Univ.) Chul-Woong Hwang (Kyungnam Univ.) Sea-Han Lee (Kyungnam Univ.) Duck Hyun Wang (Kyungnam Univ.)
저널정보
한국기계가공학회 한국기계가공학회지 한국기계가공학회지 제20권 제10호
발행연도
2021.10
수록면
19 - 26 (8page)

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초록· 키워드

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In fine-particle–injection processing, hard fine particles, such as silicon carbide or aluminum oxide, are injected using high-pressure air, and a small amount of material is removed by applying an impact to the workpiece by spraying at high speeds. In this study, a two-axis stage device capable of sequence control was developed to spray various shapes, such as circles and squares, on the surface during the micro-particle jetting process to understand the surface-shape micro-particle-processing characteristics. In the experimental device, two stepper motors were used for the linear movement of the two–degree-of-freedom mechanism. The signal output from the microcontroller is converted into a signal with a current sufficient to drive the stepper motor. The stepper motor rotates precisely in synchronization with the pulse-signal input from the outside, eliminating the need for a separate rotation-angle sensor. The major factors of the processing conditions are fine particles (silicon carbide, aluminum oxide), injection pressure, nozzle diameter, feed rate, and number of injection cycles. They were identified using the ANOVA technique on the design of the experimental method. Based on this, the surface roughness of the spraying surface, surface depth of the spraying surface, and radius of the corner of the spraying surface were measured, and depending on the characteristics, the required spraying conditions were studied.

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ABSTRACT
1. Introduction
2. Experimental Equipment and Methods
3. Results and Discussion
4. Conclusions
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