| 摘要: |
| 研究适合于裁焊板生产的板坯切割的技术方案,重点讨论了CO2激光切割。采用氮气辅助激光切割,氧气辅助激光切割,铣切和普通剪切方法进行了镀锌钢板的切割。研究表明,氮气辅助CO2激光切割方正度较好,切口质量符合裁焊板拼接间隙小于0.1 mm的要求。激光切割时,由于热影响范围小,镀锌钢板切口边缘镀锌层烧损范围小,整个切缝无宏观残余形变。氮气辅助CO2激光切割具有切割速度快,质量好的优点,适合于进行裁焊板的板坯切割。 |
| 关键词: 裁焊板 激光切割 镀锌钢板 |
| DOI： |
| 分类号: |
| 基金项目: |
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| CO2 laser cutting for galvanized tailored welded blank |
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CUI Huai-Yang1,2, CHEN Kai2, ZUO Tie-Chuan2
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1.Department of Applied Physics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;2.National Center of Laser Technology, Beijing University of Technology, Beijing 100022, China
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| Abstract: |
| This paper explores a cutting technology for galvanized tailored welded blank, with a focus on CO2 laser cutting. Four cutting methods, laser cutting with nitrogen jet assistance, with oxygen jet assistance, mill cutting and shears cutting, were investigated. The results indicated that: (1) CO2 laser cutting with nitrogen jet assistance can provide a better squareness, its cutting quality meets the requirement that butt gap for the edges must be less than 0.1 mm. Because the HAZ is smaller for CO2 laser cutting with nitrogen jet assistance, there is not macroscopic resident distortion for the cut sheet. (2) CO2 laser cutting with nitrogen jet assistance with high speed and good cutting quality is suitable for cutting preparation for tailored welded blank manufacturing. |
| Key words: tailored welded blank laser cutting galvanized steel sheet |
