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基于Ansys模拟的钛合金筒形工件离子渗氮温度场分析 被引量:1

Analysis on temperature field in plasma nitriding of titanium alloy cylindrical workpiece based on Ansys simulation
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摘要 针对钛合金离子渗氮过程中无法实时获取筒形工件温度分布的问题,通过基于Ansys的稳态温度场数值模拟,对多种渗氮工况、不同尺寸的钛合金筒形工件温度场进行模拟,获得一系列筒体工件温度场分布特性。结果表明,钛合金筒形工件在理想离子渗氮过程中,工件表面最大温差达到7.8℃,温度场为对称分布,在轴向呈现出中心高两端低的特点;增加两端辅助加热后,相同筒形工件表面最大温差缩小至5.6℃,工件两端温度显著提高,温度场均匀性得到改善,但温度场均匀性会随着筒体壁厚的增加而变差;通过调整辅助功率,可以改善筒体轴向温度均匀性。在径向,筒体内壁温度要高于外壁,且内外壁温度差会随着壁厚的增加而增加。该数值模拟结果,可为钛合金筒形工件的离子渗氮工艺优化提供参考。 To solve the problem that the temperature distribution of cylindrical workpiece cannot be obtained in real-time in the process of titanium alloy ion nitriding,the temperature field of the titanium alloy cylindrical workpiece of different sizes under various conditions was simulated through the steady temperature field numerical simulation based on Ansys software,and a series of temperature field distribution characteristics of cylindrical workpiece were obtained.The results show that in the nitriding mode completely relying on plasma bombardment without auxiliary heating,the maximum temperature range of the titanium alloy single cylinder workpiece can reach 7.8℃,the temperature field is symmetrical,and the temperature is high in the center and low at both ends at axial direction.After the auxiliary heating at both ends is added,the maximum temperature range of the same cylindrical workpiece is reduced to 5.6℃,the temperature at both ends is significantly increased,and the uniformity of temperature field is improved,but such uniformity becomes worse with the increase of cylinder wall thickness.The axial temperature uniformity of the cylinder can be improved by adjusting the auxiliary power.In the radial direction,the temperature of the inner wall of the cylinder is higher than that of the outer wall,and the temperature difference between the inner and outer walls increases with the increase of wall thickness.The numerical simulation results can provide a reference for the optimization of ion nitriding process of titanium alloy cylindrical workpiece.
作者 韩啸 贺瑞军 朱硕 王赟 冯润华 孔令利 Han Xiao;He Ruijun;Zhu Shuo;Wang Yun;Feng Runhua;Kong Lingli(Beijing Institute of Aeronautical Materials,Aero Engine Corporation of China,Beijing 100095,China)
出处 《金属热处理》 CAS CSCD 北大核心 2023年第6期258-264,共7页 Heat Treatment of Metals
基金 北京航空材料研究院创新基金(KZ0C210325)。
关键词 钛合金 离子渗氮 温度场 热处理 ANSYS模拟 titanium alloy plasma nitriding temperature field heat treatment Ansys simulation
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