【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 .1mm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更多还原

【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.更多还原