| 摘要 |
PURPOSE:To make it possible to use less expensive iron for a submersible type motor by adding rust preventive agent and borax to sealing liquid sealed in the motor and thus simultaneously preventing the corrosion of different type of metal in the motor. CONSTITUTION:Rust preventive agent and borax and added to sealing liquid sealed in a can 7 of a submersible type motor used under water. The rust preventive agent includes, for example, sodium nitrite and sodium benzoate, and their contents are 0.1-1wt% of sodium nitrite, 2-10wt% of sodium benzoate and 0.1-2wt% of borax. Thus, the painting of the rotor 3 can be eliminated. |
