论文部分内容阅读
为了实现激光相变硬化工艺参数的优化选择,基于有限元仿真技术,研究了激光扫描过程中的温度场分布规律,并结合材料相变曲线,预测了轧辊淬硬层的宏观形态。进而,根据宏观表面硬度和显微组织的实验结果,确定了适于半钢材质激光强化的参数组合。经磨料磨损实验表明,半钢材质的型钢轧辊经激光强化后,其耐磨性显著提高。
In order to optimize the process parameters of laser transformation hardening, the distribution law of temperature field in laser scanning process was studied based on the finite element simulation technology. The macroscopic morphology of the hardened layer of the roll was predicted with the phase change curve of the material. Furthermore, based on the macroscopic surface hardness and experimental results of the microstructure, the parameter combination suitable for laser strengthening of the semi-steel material was determined. Abrasive wear experiments show that the semi-steel steel roll after laser strengthened, its wear resistance increased significantly.