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论文类型：会议论文

发表时间：2009-12-26

收录刊物：EI、CPCI-S、Scopus

卷号：97-101

页面范围：4164-+

关键字：Laser drilling; Heat absorbing rate; Preheating; Hard alloy; Spatial mode

摘要：Based on a principle of laser drilling size and the roundness copied with respect of laser spatial mode, heat absorbing rate for laser drilling of YG8 is presented in theory and application. The mathematical models are then developed. The relationship of heat absorbing rate compared to the original absorbing rate is thus derived that is A =eta T + A(0). It shows that heat absorbing rate to laser beam increases linearly with drilling temperature. The research outcome is used to optimize preheating process in which the novel method improves laser drilling precision from +/- 0.03mm of primitive laser system to +/- 0.01mm under the condition of heat absorbing.