• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2001년도 추계학술발표대회 개요집
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• pp.121-124
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• 2001

The main characteristic of the Electron Beam Welding technique is its high energy density which produces thin and deep welds with very little distortion. High accelerated electrons, focused in a beam of 0.5 ∼ 2mm diameter, produce narrow welds with deep penetration. The result is a small HAZ as well as a low and uniform distortion which is predictible within very narrow limits. But the small diameter of the EB increases the requirements for the equipment control system for centering the beam on the welding joint in order to avoid any lack of fusion. Therefore, in this paper, we introduce the system developed at our company and the quality of welding zone, the detail function of system.

• Journal of Welding and Joining
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• 제29권6호
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• pp.4-8
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• 2011

• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 1998년도 특별강연 및 추계학술발표 개요집
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• pp.151-154
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• 1998

• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2007년 추계학술발표대회 개요집
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• pp.360-362
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• 2007

• 한국레이저가공학회지
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• 제4권1호
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• pp.39-48
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• 2001

This study was performed to evaluate basic characteristics of electron beam weldability for high strength aluminum alloys. The aluminum alloys used were A5083 and A6N01, and A7N01. The principal welding process parameters, such as accelerating voltage, beam current, welding speed and chamber pressure were investigated. The dimension and microstructure of welds were evaluated with OLM, and SEM (EDAX). In addition, weldability variation(cracking) due to process parameters was also evaluated. The degree of cracking in the EB fusion zone appears to be affected mainly by aspect ratio, such that as aspect ratio increases the cracking tendency also increases. The alloying element itself may also affect the hot cracking resistance, but its role is considered to be indirect effect such that the relatively higher vaporization pressure elements of Zn and Mg give deeper weld penetration and thus results in greater cracking tendency.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2005년도 춘계학술대회 논문집
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• pp.258-263
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• 2005

Because of its high performance and accuracy, electron beam welding has an important role in industrial applications such as semi-conductor and LCD manufactures. Since its operation has been done in a vacuum room, it is very difficult to check out their weldability as well as the correct welding area of the specimen. In this study, a measurement system of the electron beam welding has been developed based on the 3-axis LVDT controlled table. In addition, the algorithm to tracking the welding line has been developed. Welded regions were measured by using an A-scan ultrasonic sensor only. Weldability of the aluminum specimen has been tested by newly developed measuring system. The results are compared with those by using an C-scan ultrasonic sensor, which show good agreements with each other.

• 한국진공학회지
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• 제2권3호
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• pp.275-281
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• 1993

본 논문은 포항가속기에서 건설 중인 진공 chamger의 용접에 관한 것이다. 저장링에 전자빔을 5시간 이상 저장하기 위하여 10-10torr 이하로 진공도를 유지하도록 설계되어 있기 때문에 초고진공에 적합한 TIG 용접(tungsten inert gas welding)을 하였다. 진공 chamber는 Al 5083-H321이며 flange의 재질은 Al 2219-T852이다. Sector chamber I, II의 총 용접 길이는 각각 27m, 37m이며 진공에 유해한 균열과 virtual leak가 생기지 않도록 하는 용접조건 등을 선정하였다.

• 한국레이저가공학회:학술대회논문집
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• 한국레이저가공학회 2003년도 춘계학술발표대회 논문개요집
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• pp.43-47
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• 2003

• Journal of Welding and Joining
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• 제26권5호
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• pp.1-3
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• 2008

• Journal of Welding and Joining
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• 제18권5호
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• pp.3-12
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• 2000