What is the current test pile, the application of the current test pile in the corrosion protection of metal pipes

To ensure that the magnesium anode is functional, current test piles need to be placed around the metal pipe in forced current cathodic protection. This chapter will introduce to you the relevant knowledge about the current test pile, to help you understand what the current test pile is, so that you have a certain understanding of the application of the current test pile in the metal pipeline anti-corrosion! If you need to buy anode equipment, learn more about this knowledge, we welcome you to inquire!

Knowledge Point 1: Analysis of current test pile

The potential test pile is mainly used to detect the potential of the protected metal. We usually use the multimeter and Cu/CuSO4(CSE) to test the protection potential of the cathodic protection pipeline with forced current through the test pile, and indirectly assess the quality of the sacrificed anode such as magnesium anode through the potential distribution.

Knowledge point 2: application of current test pile in metal pipeline corrosion prevention

In order to ensure its anti-corrosion performance, we need to use the equivalent current principle to measure the current in the tube to evaluate the insulation resistance of the anti-corrosion layer. During detection, the signal current of a certain frequency is transmitted from the transmitter to the pipeline. When the current flows through the pipeline, the corresponding magnetic field will be generated around the pipeline. When the anode material anticorrosive layer outside the pipeline is intact, the current of the pipeline extension is more balanced, no current loss phenomenon or less loss, and the surrounding magnetic field is more stable; When the sacrificial anode is exhausted and the anticorrosive coating outside the pipe is worn or aged, the current will be lost and the strength of the magnetic field around the pipe will weaken. In this way, we can judge the service life of the anode material and the replacement time