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As time goes on, the shape type of anode decreases obviously. The magnesium anode used for rapid pre polarization is called current increaser and is no longer used. The shape selection requirements of sacrificial anode are specified in various standards. Ensure good interchangeability, especially for external protection of ships.
The rod-shaped anode is made into a long rod with a steel core or a load-bearing steel core member. The steel core can pass through the whole rod or one end. They can be cast or extruded. It is mainly used for protection of buried structure in soil and internal protection of storage tank. The thickness of anode rod varies greatly and can be made into filament or rod with diameter of 70mm.
The plate-shaped solid anode with casting bracket is mainly used for external corrosion protection of ships, internal corrosion protection of steel structures and large storage tanks. This shape of anode is not suitable for use in soil because of the high grounding resistance. The solid anode has square, rectangular or circular cross-section, and cast iron pipe is often used for bolt fixation. This kind of anode can usually be made into magnesium anode.
The anode of the storage tank is long and thin, and the circular iron core passes through the anode. For the convenience of production, the cross section is semicircular, nearly rectangular or trapezoidal, sometimes triangular. The iron core is welded or bent on the fastener. Shackles or bent cores are used to weld protected objects.
The shape of the offshore anode is similar to that of the oil tank anode, but the offshore anode is much larger and is made of aluminum alloy. According to the strength of anode, most anodes are cast on the support of pipe or special-shaped iron parts, and then welded with horizontal convex hook and ring. For tubes, chain anodes are usually used.
Anodes with special shapes have various forms and are mainly used for anticorrosion of small vessels. Boilers, heat exchangers and condensers all belong to this kind of vessel. In addition to the rod-shaped anode which can be bolted to the vessel from the outside, there are also short cylindrical and flat spherical anodes which can be bolted to the protective surface.
Shandong Linyi Bosi conductive materials Co., Ltd. is a high-tech enterprise specializing in the production of MMO flexible anode, conductive polymer flexible anode and titanium coated anode, mainly providing cathodic protection technology, engineering design, installation and technical services.
Tel: +86 17568010262£¬0539-3712117.