자동차 변속기용 정밀 부품의 용접변형 감소화에 관한 연구

Title
자동차 변속기용 정밀 부품의 용접변형 감소화에 관한 연구
Other Titles
A Study on the Mitigation of Welding Distortion of a Precision Component for Automobile Transmission
Author(s)
김재웅정회윤윤석철
Keywords
Precision-welding; Gas tungsten arc welding (GTAW); Welding deformation; Temperature distribution; Numerical analysis.
Issue Date
201208
Publisher
대한용접접합학회
Citation
대한용접접합학회지, v.30, no.4, pp.31 - 37
Abstract
In recent years, a demand for precision-welding is increasing in wide industrial fields for getting a high quality welded structures. Although laser welding is commonly used for precision-welding, gas tungsten arc (GTA) welding is also attempted as a precision-welding due to the cost benefit. However, welding heat causes an uneven temperature distribution leading to welding deformation. Since it causes geometric errors and degrades product quality, welding distortion recently rises as an important issue in the field of automobile parts. To control welding deformation, it is needed to design in shapes that can maximize stiffness against deformation during welding; control the welding sequence; minimize heat input; and weld allowing reverse deformation; etc. Thus it is necessary to find the one, among such approaches, that can minimize the deformation range by mathematical analysis and understand how effective it would be when it is actually used in industrial fields. This study performs analyses by numerical calculations and experiments for the De-Tent Lever, one of transmission part that requires precision the most among automobile parts, as the subject of experiment. Decrease in welding deformation is required for this part, since there is currently a trouble in guaranteeing precision due to angular deformation by welding between boss and plate. Finally the ways to minimize welding deformation has been suggested in this study through analyses on it.
URI
http://hdl.handle.net/YU.REPOSITORY/27435
ISSN
1225-6153
Appears in Collections:
공과대학 > 기계공학부 > Articles
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