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The Analysis of the Residual Stress and Bending Characteristics on the Heterogeneous Materials by Laser Welding  

오세헌 (충남대학교 공과대학 기계공학과)
민택기 (충남대학교 공과대학 기계공학과)
Publication Information
Journal of Welding and Joining / v.22, no.3, 2004 , pp. 45-49 More about this Journal
Abstract
Generally, it is used the compensation spring to compensate the inaccuracy of screen image induced by thermal deformation in CRT monitor. Its mechanism is hi-metallic system made of heterogeneous metals and these springs are bonded by laser welding. But laser welding induces a non-uniform temperature distribution, and residual stress is yielded locally by these temperature deviation. Therefore, this study measures the curvature constant to assess functions of the compensation spring of shadow mask with respect to increment temperature and estimates the effect of residual stress on the performance of tri-metal used to compensation spring.
Keywords
Curvature constant; Heterogeneous materials; Laser weldment; Hole drilling method; Residual stress;
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