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  • 學位論文

拼焊板雷射焊接製程參數研究

Study on the Laser welding process parameters for Tailor Welded Blanks

指導教授 : 陳政順
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摘要


本文採用田口實驗分析法研究拼焊板雷射焊接之製程參數,所使用的雷射焊接機包括利用CO2 2.5KW連續式與500W 脈衝式之ND-YAG 雷射。考慮之製程參數有功率、進給速率、對接間隙、光斑直徑(聚焦)、待機功率、 料帶定位、保護鏡片潔淨度(透光度)…等,品質目標為背焊道寬度。並佐以鹽霧測試法驗證焊道耐蝕性,拉力測試法驗證焊道強度,半球測試法驗證焊道品質、CCD視覺檢測法證焊道品質。初步實驗結果顯示製程參數如光斑對焦、定位、輸出功率、進給速率、對接間隙等皆與焊道品質正相關。

並列摘要


The purpose of this paper is to study the laser process parameters for tailor welded blanks by using Taguchi method. The laser equipments used include the CO2 and ND-YAG Laser. The process parameters considered include the output power, feed rate, gap of junction, spot diameter, standby power, protective lens, and positioning accuracy of blank. And the objective of quality is the welding width on backside. In addition, salt spray test, tensile test, semi-sphere test, and CCD visual inspection are used to verify the welding quality of samples. The preliminary experimental results showed that the following control parameters like laser bean focus, positioning, output power, feed rate, weld gap were positively correlated with weld quality.

參考文獻


1. Hicks, John. Welded Joint Design. New York: Industrial Press. 1999. ISBN 0-8311-3130-6
2. 蔡宗河﹐CO2雷射加工﹐ISBN=957-21-0838-7﹐全華科技圖書股份有限公司﹐2001。
3. 川澄博通﹐雷射加工技術﹐復漢出版社﹐1990。
4. 黃志強,認識雷射焊接,中華民國職業訓練研究發展中心,2001。
5. 黃志強, 選用雷射銲接材料及設定加工參數,中華民國職業訓練研究發展中心,2001。

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