| Summary: | 碩士 === 國立成功大學 === 機械工程學系碩博士班 === 97 === Injection molding is one of the major fabrication
technologies, andmany manufacturers used it to fabricate
products. In recent years,many products have the
requirements including high surface quality,high gloss and
high replication. And rising tool surface temperature is
one of the solutions for the ones. So, many tool surface heatingtechniques have been developed recently. Due to the
advantages ofelectromagnetic induction heating such as high speed heating, lowenergy consumption and environmental pollution reduction, using theone for tool surface heating is more significant among those tool surface heating techniques.In the past, the studies of using electromagnetic induction heating for tool surface heating indicated that the temperature uniformity and
increasing cycle time were questionable until now. In this thesis, the insert type induction heating module will be developed to improve those problems. According to the result of coil test experiments, the surface temperature of 7mm thickness hot work die steel (JIS SKD61) could rise from 50oC to 150oC in 15 seconds and the temperature
uniformity of heated zone reached 94%~95%.In this thesis, the parallel type coil and magnetic flux concentrators were adopted to fabricated induction heating apparatus.
And the insert type induction heating module was developed
successfully. This induction heating module could heat the target area of mold cavity uniformly. The uniformity of target area reached 94%~96%. And the heating rate of this module is about 3.5oC/sec
|
|---|
