感應加熱方法發展至今已在成功應用於多個領域，如：硬焊、表面硬化、熱壓成形、塑膠回焊與金屬焊接等等…，而電磁感應加熱具有許多優點，如精確的溫度控制、低耗能、快速升溫速率、低污染與有效降低生產週期，基於上述理由，本文將利用電磁感應加熱方式進行螺桿與熱膠道進行加熱，以取代傳統利用電阻式加熱器，此乃為本文研究重點。
本文將著眼於使用螺線型感應加熱線圈進行射出機料管與熱膠道進行加熱，另本文亦探討在線圈加入磁場集中器之效益，以研究對整體加熱效果之影響。此外，在感應加熱模擬方面，本文使用工程分析軟體ANSYS進行感應加熱數值模擬，並與實驗作驗證比對，以探討感應加熱數值模擬之可行性。
在進行料管感應加熱與電阻式加熱實驗研究結果方面，針對感應加熱系統1～4種型態與電阻式加熱系統，其平均升溫速率分別為0.56 0C/sec、0.53 0C/sec、0.51 0C/sec、0.47 0C/sec與0.49 0C/sec，而均溫性則分別為90.88%、91.59%、90.7%、95.82%與 95.71%，而在實驗與數值分析結果比較下，針對感應加熱系統1～4種型態，其結果差異為5.93%、2.59%、2.86%與2.44%。
在進行熱膠道感應加熱實驗方面，實驗結果在進行微調控制後，其溫度均勻性有著顯著改善。針對感應加熱所使用的電流值為22.5A、18.5A與15.5A時，在改善前，均溫性為5.93%、2.59%、2.86%與2.44%，在改善後，均溫性為91.4%、91.1%與90.62%，此外，加熱速率平均約2.82 0C/sec，而在數值模擬與實驗彼此間，其均溫性差異為2.44％～6.31％。

Induction heating method has been widely used for a long time and its applications are quite popular such as brazing, surface hardening, forming, plastic reflow, soldering… Electromagnetic induction heating method has a lot of advantages such as precise temperature control, low energy consumption, high heating speed, environmental pollution limit and production cycle reduction. Based on effective heating applications of the above method, it is proposed to apply heat for injection molding machine barrel and hot runner instead of using the resistance heating method. Therefore, this method will be researched and discussed in this study.
The focal point of this thesis is to design a solenoid coil in order to heat barrel and hot runner. In another case, the magnetic flux concentrator is attached on the coil to evaluate its effect. Besides, a simulation of induction heating system using ANSYS software is also performed. Finally, the experiment results will be compared to simulation results to evaluate the feasibility of simulation method.
In experiment tests for barrel, the average heating rates were 0.56 0C/sec, 0.53 0C/sec, 0.51 0C/sec, 0.47 0C/sec and 0.49 0C/sec for induction heating type 1, 2, 3, 4 and resistance type, respectively. Similarly, the average temperature uniformities were 90.88%, 91.59%, 90.7%, 95.82% and 95.71%, respectively. In addition, the temperature uniformities difference between experiment results and simulation results also brought out many positive results. These differences were only 5.93%, 2.59%, 2.86% and 2.44% for types 1, 2, 3 and 4, respectively.
From the experiment results for hot-runner, the results after adjusting brought out more improvement and uniformity compared to the results before adjusting. The temperature uniformities were 64.9%, 66.19%, 67% before adjusting and 91.4%, 91.1%, 90.62% after adjusting for power level 22.5A, 18.5A and 15.5A, respectively. Furthermore, average heating rate could reach 2.82 0C/sec. The results of temperature uniformity differences between experiments and simulations were from 2.44% to 6.31% for 3 power levels.

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