| 摘要 |
PURPOSE:To enable the stable operation of electronic apparatus by preventing the water leakage of junctions due to corrosion, and thus contriving the prolongation of lifetime, by providing a ring serving as the sacrificed anode at a required point of the cooling water passage. CONSTITUTION:A groove 20A is formed in the inner surface of a flange 20, and the ring 21, serving the sacrificed anode, formed out of Al alloy or Zn alloy is provided in the groove 20A by fixing through fit-in or welding. Since such a formation enables the corrosion with cooling water to generate on the ring 21, the corrosion in the junction D is not advanced. This prevents the accident of water leakage. When the ring 21 is worn down by long-time operation, it is only necessary that the flange 20 is removed and replaced with a new one 21. |
