Epoxy resin automatic pressure gel (APG), as a relatively new technology, the production of epoxy products have good mechanical and electrical properties, dimensional accuracy and surface quality of the workpiece are larger than conventional vacuum pouring process has improved. Automatic Pressure Gelation process from the earliest Switzerland Ciba company, at present, has been widely applied in developed countries. In recent years, with the rapid development of domestic electric appliance manufacturing industry, more and more production plants using this technology. APG technology is the key to material and its application process, at present, there is plenty of material to be imported, such as to realize material localization will greatly promote the development of China's electrical industry. Based on this idea, jiahua industrial company limited of APG material was developed and applied. Automatic Pressure Gelation process is different from the traditional process of epoxy resin casting process, this process is similar to the method of thermoplastic injection molding process. First will various material in mixed material tank in the mixed uniform, vacuum de gas hòu in must pressure xià will material liquid injection entered mold, will air catch out die cavity of while material liquid full whole type cavity, in high of die temperature xià material liquid and die wall contact hòu quickly curing, then gradually to internal extends, from note expected release during injection mouth always on has die cavity keep must of pressure, constantly on die cavity for contraction compensation, thus makes parts has stable of size precision and excellent of mechanical, and electrical performance.The main difference between it and vacuum casting: casting material is the external pressure through the gate into the mold materials mixing low processing temperature and curing mold temperature is higher; curing speed, usually more than 10 minutes to dozens of minutes. Automatic Pressure Gelation process characteristics include: injection pressure gel process. Constantly inject new material into the cavity to compensate for defects caused by curing shrinkage, decrease stress, high accuracy and good surface quality of the workpiece; High curing speed and die high application rate, short production cycles, and labor efficiency to improve production and a high degree of automation, easy operation and control, operations staff and low labor intensity. APG technology eliminates the large cast parts of surface defects and internal stress, improves the density of materials, mechanical and electrical performance and stability, greatly shortening the production cycle, with high quality, high efficiency, energy-saving and material-saving, low pollution, low cost advantages.
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