65Mn钢圆锯片回火过程的有限元模拟及加热方法改进

Finite Element Simulation of Tempering Process for 65Mn Circular Saw Blade and Its Heating Method Improvement

针对大直径圆锯片采用径向加热方式进行回火热处理过程中由于锯片温度分布不均匀所产生的热应力分布不均匀、锯片回火变形较大等问题,提出了大直径锯片回火处理的轴向加热方法,建立了大直径锯片的有限元模型,模拟计算了大直径锯片在径向加热、轴向加热两种加热方式下锯片的温度场分布、应力场分布,对两种加热方式下锯片的回火质量进行了对比分析。计算分析结果表明:轴向加热方式下锯片的回火热处理质量显著优于径向回火加热方式。本文中提出的方法是可行的、有效的,可有效保证大直径锯片的回火质量。

In the tempering heat treatment process of large circular saw blade by using radial heating method, ai- ming at the problems caused by the uneven temperature distribution of saw blade such as the uneven distribution of thermal stress and the large tempering deformation of saw blade etc. , an axial heating method of tempering for large diameter circular saw blade was proposed in this paper. The finite element model of large circular saw blade was es- tablished, the temperature field distribution and the stress field distribution of the radial heating large circular saw blade and those of the axial heating saw blade were simulated and calculated respectively, and the comparative analysis of tempering quality for saw blades with the two heating methods was carried out. The results of calculation and analysis show that the tempering heat treatment quality of the saw blade with axial heating method is significant- ly better than that of the saw blade with radial heating method. The method proposed in this paper is feasible and effective, which can effectively ensure the quality of the large circular saw blade.