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김우순(W.S. Kim),김윤광(Y.K. Kim),김동현(D.H. Kim) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-
Rapid prototyping technologies have been widely used to reduce the development cost of new products. Manufacturing industries are nowadays characterized by the flexibility and complexity of products. This to due to the rapid development of manufacturing technology and diverse needs of customers. In this paper, the best burning out and casting condition for getting casting product of resin pattern(photopolymer) have been examined experimentally. In generally, the burning out and casting conditions have effect on the casting products. Using the direct casting. we directly producted the jewelry. And in this paper, we used only gypsum. Many study of casting for resin have been used to dental investment. A dental investment is good for resin casting. but dental investment is too hard and not useful on the jewelry casting. Therefore we need to find the way of resin casting by gypsum.
김우순(W. S. Kim) 한국생산제조학회 2007 한국생산제조학회지 Vol.16 No.6
It is absolutely that jewelry industr y are cut and formed by using Nd-YAG laser for most accuracy shapes. Moreover, Jewelry manufacturing is needed to be more precise working, more saved time and more improved finance. So, This Study will show the ideas which make exactly formed shape and advanced qualities when cutting Ag-alloy. This ideas will give the fact that beginners are able to use easily to change and compound the form of jewelries by using Nd-YAG laser.
김우순,김윤광,김동현 한국공작기계학회 2006 한국공작기계학회 추계학술대회논문집 Vol.2006 No.-
Rapid prototyping technologies have been widely used to reduce the development cost of new products. Manufacturing industries are nowadays characterized by the flexibility and complexity of products. This to due to the rapid development of manufacturing technology and diverse needs of customers. In this paper, the best burning out and casting condition for getting casting product of resin pattern(photopolymer) have been examined experimentally. In generally, the burning out and casting conditions have effect on the casting products. Using the direct casting. we directly producted the jewelry. And in this paper, we used only gypsum. Many study of casting for resin have been used to dental investment. A dental investment is good for resin casting. but dental investment is too hard and not useful on the jewelry casting. Therefore we need to find the way of resin casting by gypsum.
김우순,김동현,난바의치 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-
In this paper, we will present the Aspheric Surface Program for optical element. X-ray optical element designed to give a high resolution and reflectivity in order to observe the living cell in the range of the water window. According to optical design, we developed the Aspheric Surface Program using the visual basic. Using the Aspheric Surface Program, we directly machined the electroless nickel bulk.
트럭용 커넥팅 로드 소재의 내부 품질에 따른 기계적 특성 연구
김동현,채왕석,김우순 한국공작기계학회 1998 한국생산제조학회지 Vol.7 No.1
We have studied internal quality including chemical compositions, microscopic structure and nonmetallic inclusion of test materials. We have analyzed tensile strength value, hardness value, impact value etc. In analyzing internal quality, all of the test materials showed typical ferrite+pearlite structure. But nonmetallic inclusion showed oxide and sulfide inclusions in medium carbon steels, and sulfide inclusion is S-free cutting steels. In ca+S-free cutting steels, the calcium aluminate and sulfide complex inclusion had low-melting points as deformation of sulfide and oxide inclusion is existed. It was found that tensile strength and hardness give maximum value in medium carbon steels, where as minimum in Ca+S-free cutting steels. But values of elongation, reduction of area and impact are reverse. Fracture surface of impact specimen is ductile in free cutting steels but brittle in medium cabon steels.
이승채,김우순,김동현 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-
Rapid prototyping technologies have been widely used to reduce the development cost of new products. Manufacturing industries are nowadays characterized by the flexibility and complexity of products. This to due to the rapid development of manufacturing technology and diverse needs of customers. In this paper, the burning condition for getting casting product of resin pattern have been examined experimentally. In generally, the burning conditions have effect on the casting products. Using the direct casting. we directly producted the jewelry.