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Product Details
High silicon cast iron anodes are amongst the most widely used anodes for ICCP systems. Due to their high content of silicon(14% – 16%), the anode surface is oxidized with a thin film of hydrated silicon oxides (SiO2), which serves to protect the anodes from metal pitting. The high silicon cast iron anodes exhibit extraordinary corrosion resistance and low consumption rates when subject to a low-pH environment. They have a long history of use in the protection of buried and submerged structures from corrosion.
Tubular high silicon cast iron anode is popular for its centered cable connection and enhanced sealing properties due to the additional sealing materials used inside the anode. After the connection is made, it can be sealed with polyurethane or a combination of polyurethane and Novoid A electrical sealant.
Our high silicon cast iron tubular anode is used for a variety of impressed current cathodic protection applications, including deep well anode systems, shallow anode installations, offshore structures.
Centrifugal Casting Process
Our tubular HSCI anodes are centrifugal chill cast. The casting mold rotates at over 1000rpm producing a g-force that eliminates any trapped gas from silicon iron and throws any impurities to the inside bore of the anode where they do not hinder anode performance. Hence, the metal matrix is tight and dense, increasing the life of the anode.
Electrochemical Properties
For anodes of the same chemistry and microstructure, variance in consumption is primarily due to the chemical and physical characteristics of the anode environment. The consumption rate does not appear to be significantly affected by current density (amperes per unit area of anode surface). The use of coke breeze around the anode in soil ground beds will tend to lower the consumption rate.
