Solid-sealed Pole To Prevent Cracking

Embedded Pole Cracking is a common problem. Due to the different expansion coefficients of epoxy resin, arc extinguishing chamber shell, and upper and lower outlets, if the epoxy is cured, it will cause cracking if there is a large internal stress. In addition, dynamic thermal stability shock, opening and closing operation vibration, and changes in ambient temperature will also cause cracking. In order to solve the cracking problem, in addition to the selection and bonding of upper and lower outlets, epoxy resin formula, and buffer layer, it is also necessary to have a reasonable product structure and mold design, and the choice of manufacturing process is also particularly important.