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一、前言随着石油化工工业的飞速发展,塑料制品业亦日益繁荣。由于塑料具有比重小、耐腐蚀、吸震、隔热、成型容易等独特的性能,因此在化工、电器、仪表、汽车、玩具、家用电器等方面得到了广泛应用。同时,随着工艺技术的不断创新,塑料制品的成型工艺亦日趋繁多,其发展趋势为高速化、大型化、精密化、多型腔化。因而,对塑料成形用的模具材料的性能要求亦越来越高,消耗量越来越大。由于不同塑料树脂性能的差异,对模具材质的要求亦不同,除了要求有一定的
I. Introduction With the rapid development of the petrochemical industry, plastic products industry is also increasingly prosperous. Due to its small specific weight, corrosion resistance, shock absorption, heat insulation, easy molding and other unique properties, it has been widely used in chemical industry, electrical appliances, instruments, automobiles, toys and household appliances. At the same time, with the constant innovation of process technology, the molding process of plastic products is becoming more and more numerous. Its development trend is high-speed, large-scale, precise and multi-cavity. Therefore, the mold material for plastic molding performance requirements are also getting higher and higher, more and more consumption. Due to the different properties of different plastic resins, mold material requirements are different, in addition to require a certain