| 摘要 |
PURPOSE:To obtain the titled electrode increasing the lifetime of a can body by providing a part covered with electrically insulated materials to a part close to the can body, uniformalizing the current distribution of the can body and keeping an electrode apart from the inside surface of can wall to control the deterioration of the lining. CONSTITUTION:In a can body 1 which is lined with glass and provided with a sheathed heater 3 of an electric calorifier, a part covered with electrically insulated materials is provided to the parts in which anode electrodes 21, 22 for cathode-corrosion protection close to the can body 1 and an electrode operation part is arranged on the core of the central part kept away from the glass lining of the can body 1. Thereby, all the surfaces of the can body 1 is effectively made corrosionproof to cathode by uniformizing the current distribution for the inside surface of the can body 1 and the cathode reaction of the surface of glass lining is relaxed to diminish the deterioration sufficiently. |
