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本文介绍了通过高速钢刀具组织结构的变化,来估算刀具切削刃附近区域三维温度梯度的方法。这个方法取决于高速钢的回火效应。高速钢刀具,在切削过程中受热至一定温度后,要发生一系列的组织结构和性能的变化。通过金相组织观测或显微硬度的测定,就可以判断其温度分布,误差不超过±25℃。实验证明,这种方法是研究高速钢刀具,特别是用其它方法难以测量其温度分布的成型刀具、复杂刀具切削温度场的有效方法。
This paper presents a method of estimating the three-dimensional temperature gradient in the area near the cutting edge of the tool by the change of the structure of HSS tool. This method depends on the tempering effect of high-speed steel. High-speed steel cutting tools, in the cutting process by heating to a certain temperature, to occur a series of organizational structure and performance changes. By measuring the microstructure or microhardness, you can determine the temperature distribution, the error does not exceed ± 25 ℃. Experiments show that this method is an effective method to study high-speed steel cutting tools, especially for forming tools and complex cutting tools which are difficult to measure the temperature distribution by other methods.