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직접 가열방식에 의한 극세선의 직선화 및 전단 버의 최소화에 관한 연구
김병희(Byeong Hee Kim),김웅겸(Woong Kyum Kim),홍남표(Nam Pyo Hong),김헌영(Heon Young Kim),윤성만(Seong Man Yoon) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
There are many ways about straightening process of the micro wire, such as simple tension, roll forming and pulling as soon as direct/indirect heating. In this study, we have developed a novel wire straightener which uses the direct heating method (DHM) for straightening the micro wire. In order to avoid the surface oxidization, we supplied the inert gas(Ar) during the heating process and examined the effect of gas flow rate. And we evaluated the burr height at the end of the wire which used the shearing machines. From various experiments and analyses, we could obtain fine straightness(? 1㎛/1000㎛), roundness(<±2㎛ /100㎛) and minimized the burr height when the tension is 500~600gf and the current is about 1.5A.
조준원,김웅겸,김헌영,김병의 강원대학교 산업기술연구소 2005 産業技術硏究 Vol.25 No.B
Micro wires manufactured by the straightening process are used in the BT(Bio-Technology), IT(Information-technology), NT(Nano-Technology). We have developed a novel wire straightener which uses the direct heating method(DHM) for straightening the micro wire and shearing device for burr-less cutting. In this study, we confirm the tendency of micro wire after the shearing process. It is impossible to remove the burr in the shearing process. However, the embodiment of minimum burr size after the shearing process is the best in-process method. In order to minimize the burr size, we have accomplished the various experiment condition such as the U-groove, the effect of counter punch, the shear angle, clearance.
SUS 304 마이크로 와이어 직선화 처리에 관한 연구
신홍규,김남수,김웅겸,홍남표,김병희,김헌영 江原大學校 産業技術硏究所 2004 産業技術硏究 Vol.24 No.A
In the study, we have developed a straightening system for the SUS 304 micro wires that are normally used in the medical and semi-conductor fields. To apply heat to the micro wires, we introduced the direct wire heating method which generates the thermal energy by the electrical resistance of the wire itself. To avoid the deterioration of the wire surface by the environment, such as the oxidation or the hydration, the N_(2) gas was filled in the glass pipe in which the straightening process was being performed. A precision tension meter was also attached to control the tension of the wire during the heating and straightening process. In order to control the straightening process, several experimental investigations with varying the tension, the feeding velocity and the temperature (current) was carried out. As a result of experiments, we obtained the optimal processing conditions satisfying the straightness requirement of the micro wires.