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激光切割相对冲压及线切割工艺具有自由度大、加工效率高、不会影响铁心质量等优点,但由于残渣及切口粗糙问题一定程度上影响了激光切割硅钢片的质量和应用范围。通过采用在工件底部增设辅助侧吹喷嘴,控制熔渣流向,保证成品切割质量激光切割工艺,试验证明,合理控制工艺参量,可获得良好效果。利用有限元法进一步对工件底部气流状况进行了数值模拟,分析了流动过程中在不同的角度和流速下光斑移动和气流场变化的情况,初步确定工件底部侧吹气流以20°吹入的辅助侧吹工艺,为进一步合理控制熔渣流向获得光滑的精细切口提供了实践和理论依据。
Laser cutting relative stamping and wire cutting process has the advantages of large degree of freedom, high processing efficiency, does not affect the quality of the core, but due to the residue and the problem of rough cutting to a certain extent, the quality and scope of laser cutting silicon steel sheet. Adopting the auxiliary side blowing nozzle at the bottom of the workpiece to control the flow of slag and ensure the cutting quality of the finished product. The laser cutting process proves that reasonable control of the process parameters can achieve good results. The finite element method was used to further simulate the airflow condition at the bottom of the workpiece. The movement of the spot and the variation of the airflow field at different angles and velocities during the flowing process were analyzed. The air flow at the bottom of the workpiece was blown at 20 ° Side blowing process, in order to further control the flow of slag to obtain a smooth fine incision provides a practical and theoretical basis.