电工钢 ›› 2025, Vol. 7 ›› Issue (5): 46-.

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2 %Si无取向硅钢激光焊接性能研究

付余洁1,朱天南1,樊立峰1,岳尔斌2,徐党委3   

  1. 1.内蒙古工业大学 材料科学与工程学院,内蒙古 呼和浩特 010051;

    2.浙江省冶金研究院有限公司,浙江 杭州 310007; 3.安阳钢铁集团有限责任公司,河南 安阳 455004

  • 出版日期:2025-10-28 发布日期:2025-10-21

Research on laser weldability and mechanical properties of 2 %Si non⁃oriented electrical steel

FU Yujie1,ZHU Tiannan1,FAN Lifeng1,YUE Erbin2,XU Dangwei3   

  1. 1.School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;

    2.Zhejiang Metallurgical Research Institute Co., Ltd., Hangzhou 310005, China; 3. Anyang Iron&Steel Group Co., Ltd., Anyang 455004, China

  • Online:2025-10-28 Published:2025-10-21

摘要: 2 %Si硅钢属于中牌号无取向硅钢,在冷连轧过程经常出现断带,断带位置大部分位于焊缝处,严重影响产品质量及轧辊寿命。为了抑制硅钢在焊缝处的断带问题,利用扫描电子显微镜、电子背散射衍射仪、拉伸试验和硬度测试等方法,探讨了在激光模式、光束质量、焦点位置等参数相同的条件下,焊接功率和焊接速度对2 %Si硅钢组织和性能的影响。结果表面:在焊接功率5.8 kW、焊接速度0.03 m/s时,焊接性能最优。

关键词: 激光焊接, 焊接功率, 焊接速度, 力学性能

Abstract: Silicon steel containing 2 %Si is classified as medium⁃grade non⁃oriented electrical steel. During continuous cold rolling, frequent strip fractures occur, predominantly at the weld seams, severely compromising product quality and reducing roll service life. To mitigate strip fracture issues in the fusion zone of silicon steel, the effects of laser welding parameters were investigated utilizing scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), tensile testing, and hardness measurements. Under constant laser parameters (mode, beam quality, and focal position), optimal weld quality was achieved at a power of 5.8 kW and welding speed of 0.03 m/s.

Key words: laser welding, welding power, welding speed, mechanical properties