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| 面向金属丝材熔融沉积感应加热温度场仿真研究 |
| Simulation Study On Temperature Field Of Molten Deposition Induction Heating Of Metal Wires |
| 投稿时间：2024-01-18 修订日期：2024-02-21 |
| DOI： |
| 中文关键词: 熔融沉积 感应加热 增材制造 装置设计 温度场 |
| 英文关键词: Fused deposition Modeling Induction Heating Additive Manufacturing Device Design Temperature Field |
| 基金项目:湖南省教育厅科学研究重点项目(21A0301)、湖南省自然科学基金项目(2021JJ30255) |
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| 中文摘要: |
| 针对现有金属丝材熔融沉积增材制造过程中存在升温速度慢、加热效率低、不适于较高熔点的金属增材等问题，设计了一种适用于增材制造的感应加热熔丝装置，采用高纯石墨管作为感应加热材料，金属丝材穿过石墨管时被高温石墨管加热，丝材流出石墨管时达到熔化状态。并对感应加热时的温度场进行了仿真计算，研究了不同感应电流大小、感应频率及送丝速度对温度场的影响规律。结果表明：出口处温度随感应频率的增大而增大，且感应频率越大出口处温度上升越快。出口处温度随电流的增大而增大。送丝速度越快，出口处温度越大。感应频率对出口处温度影响最显著，电流次之，送丝速度影响最小。最后，采用热成像仪检测了采用所研制的感应加热装置进行7075铝合金丝材加热到熔化的过程与时间，验证了温度场的仿真结果，证实了感应加热铝合金丝材的可行性，为感应加热熔丝增材制造工艺实践提供参考。 |
| 英文摘要: |
| Aiming at the problems such as slow heating rate, low heating efficiency and not suitable for metal additive with higher melting point in the existing process of metal wire melt deposition additive manufacturing, an induction heating fuse device suitable for additive manufacturing was designed. High purity graphite tube was used as induction heating material, and the metal wire was heated by high temperature graphite tube when passing through the graphite tube. The wire reaches a molten state when it flows out of the graphite tube. it reaches melting state. The temperature field of induction heating is simulated, and the effects of different induction current, induction frequency and wire feeding speed on the temperature field are studied. The results show that the temperature at the outlet increases with the increase of induction frequency, and the temperature at the outlet increases faster with the increase of induction frequency. The temperature at the outlet increases with the increase of the current. The faster the wire feeding speed, the higher the temperature at the outlet. The effect of induction frequency on the temperature at the outlet is the most significant, the current is the second, and the wire feeding speed is the least. Finally, the process and time of heating to melting of 7075 aluminium alloy wire using the developed induction heating device were examined by thermal imager, and the simulation results of temperature field were verified, the feasibility of induction heating aluminum alloy wire was verified, which provided reference for the practice of induction heating wire additive manufacturing process. |
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