Development of High Accuracy and High Quality Glass-fiber Reinforced Plastic Product by Hybrid Ceramics Mold

近年来，对于用于制造产品（例如汽车和家用电器）的部件，在制造阶段强烈要求高精度、高质量、轻量化以及降低制造成本和能量等。在本研究中，通过使用混合陶瓷成型模具来执行玻璃纤维增强材料（GFRP）的高精度注射成型，并对陶瓷型与普通金属型注射成型制品的表面性能进行了对比研究，结果表明，陶瓷型由于陶瓷型的绝热作用，使制品的流动性大大提高。研究结果表明：1）用陶瓷型代替金属型，制品的表面性能得到很大改善（表面粗糙度Rz：40μm→0.4μm）。2）采用陶瓷模具，可获得高精度、高质量、薄壁、高强度的玻璃钢制品。3）成型后，机械加工，4）模具寿命长，生产稳定。

Recently, the high accuracy, the high quality, the lightening, and the reduction of the manufacturing cost and the energy, etc. are strongly requested at the manufacturing stage to parts used for the manufacturing products such as the car and home electronics applianceIn this research, a high accuracy injection molding of the glass fiber reinforcing material (GFRP) was executed by using the hybrid ceramics molding die, and it made comparative study about the surface properties of injection molding products which used the ceramics mold and conventional metal mold.As a result, by using the ceramics mold, the fluidity is great improved due to the adiabatic effect of ceramics die. The results obtained are as follows.1) A great improvement of the surface properties of the products was achieved by replacing the metal mold with ceramics mold (Surface roughness Rz : 40μm→0.4μm).2) By using the ceramics mold, FRP products with the high accuracy, the high quality and thin wall with high strength are obtained.3) After molding, the machining, the painting and surface treatment are unnecessary.4) Because the mold life is long, steady production can be done.