New semiconductor electric film has many advantages, such as the uniform film surface, long life, no inductance, high thermal efficiency, etc. Especially its wide voltage range, AC and DC characteristics of efficient use of available,can be direct coupling with solar, wind and other energy.Thereby reducing the use of sustainable energys cost here.In this paper, we design a new type of energy-saving electrothermal furnace which take a semiconductor electric film as the electric heating element,and well try to explore the application of this new type of electric materials.
High-gloss injection molding technology is also called rapid cool and heat injection technology which can be used to eliminate weldmark on the surface of plastic parts, and improve the surface glossiness. However, the warpage, sink index and volume shrinkage of the parts are considered difficult to solve by using this technology. Reasons that cause the warpage and sink index of the parts were discussed in this paper firstly. Then, by using a LCD panel produced in practical injection process as an example, through orthogonal experimental design and finite element simulation, this paper discusses the effects of the injection molding parameters such as mold temperature, melt temperature etc. on warpage and sink index of the parts. The results are of great significance to help to set practical process parameters and assure the part quality in injection process.
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