强流脉冲电子束表面改性硬质合金刀具的响应面法优化研究

发布时间：2019-07-06 10:41

【摘要】：强流束脉冲电子束辐照参数对提高硬质合金刀具切削性能至关重要。本文基于响应面法(RSM)分析了硬质合金刀具在强流脉冲电子束表面改性过程中输入电压、电流和脉冲次数对刀具表面粗糙度和硬度的影响,结合回归统计建立了硬质合金刀具表面粗糙度和硬度的经验公式,揭示了影响刀具切削性能的主导因素,找出输入电压、电流和脉冲次数对刀具切削性能的最佳综合作用效果。结果表明,强流脉冲电子束辐照过程中的输入电压、电流和脉冲次数对刀具表面粗糙度和硬度均具有显著影响。通过建立的表面粗糙度和硬度对输入电压、输入电流和脉冲次数的多元响应面函数,得出最佳优化参数,在此条件下,刀具表面粗糙度为0.167μm,显微硬度值为HV2206。由于强流脉冲电子束辐照降低了刀具表面粗糙度,同时提高了表面硬度,在切削钛合金试验过程中,发现经过电子束辐照,刀具的抗磨损性能显著提高。
[Abstract]:The high-flux pulsed electron beam irradiation parameters are very important to improve the cutting performance of the hard alloy tool. The influence of the input voltage, current and number of pulse on the surface roughness and hardness of the tool during the surface modification of the high-current pulsed electron beam is analyzed based on the response surface method (RSM). The empirical formula of the surface roughness and hardness of the hard alloy tool is established in combination with the regression statistics, and the main factors that influence the cutting performance of the tool are revealed, and the best comprehensive effect of the input voltage, the current and the number of pulses on the cutting performance of the tool is found. The results show that the input voltage, current and number of pulses in the process of pulsed electron beam irradiation have a significant effect on the surface roughness and hardness of the tool. The optimal parameters are obtained by the established surface roughness and hardness on the input voltage, the input current and the number of pulse times. Under this condition, the surface roughness of the tool is 0.167. m u.m and the microhardness value is HV2206. The surface roughness of the tool is reduced due to the high-current pulsed electron beam irradiation, and the surface hardness is improved. During the test of the titanium alloy, the anti-wear performance of the tool is obviously improved.
【作者单位】：沈阳理工大学材料科学与工程学院;东北大学材料电磁过程研究教育部重点实验室;
【基金】：国家科技重大专项项目(2012ZX04003-061)资助
【分类号】：TG178

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