Calculation manner of impedance collimating mark and uses impedance collimating mark the tubing material degree of corrosion measuring method

摘要

The accuracy of the correlation between the maximum maximum corrosion depth and the maximum corrosion depth of pipe material buried in the ground is improved by the method of measuring the corrosion rate of pipes using impedance index.Estimation of corrosion degree H = a1 + B1 ZM + C 1p / S. ZM: impedance index, P / s: pipe potentialA1, B1, C1: constantsZM = (r alpha r r) x / R gamma yHere, X and y are the power of the power supply when the frequency of the current is. Alpha.,. Beta. And. Gamma., respectively. In addition to the factor of the year of embeddingSeveral tensThus, the estimation accuracy can be improved. However, A2, B2 and C2 are constants.