Method for preventing condensation and rustiness on metal surface

Abstract

The invention relates to a method for preventing condensation and rustiness on a metal surface, which is characterized by comprising the following steps: 1. preparation of equipment: arranging a dew point instrument in a metal product storage, and respectively pasting a plurality of SMD thermal resistors on the surfaces of a plurality of metal products in different areas; 2. transmitting signals of a detected environmental dew point value Ta and the temperature T1-T2 on the surfaces of the metal products into a controller, firstly generating the lowest value TL in T1-T2 through the operation of the controller, and then carrying out subtraction of TL and Ta through the controller to acquire a difference value delta T; generating a first-level alarm signal when the delta T is lower than 3 DEG C, and indicating that condensation on the metal product surfaces may occur; and generating a second-level alarm signal when the delta T is lower than 1.5 DEG C, and indicating that condensation onthe metal product surfaces is to occur. A user has to immediately take a ventilating or heating measure, otherwise the metal products can be corroded. The method can prevent the condensation on the metal surface.

Description

technical field [0001] The invention relates to a method for preventing condensation and rust on metal surfaces. Background technique [0002] As we all know, metals are not easy to corrode in dry air for a long time, but they will corrode quickly in humid air. The main reason is that in humid air, if the temperature of the metal surface is lower than the dew point temperature of the environment where it is stored, condensation will occur on the metal surface and a thin water film will be formed. It contains a small amount of hydrogen ions and hydroxide ions, and also dissolves gases such as oxygen, so that it becomes a layer of electrolyte solution, which is compatible with Fe in the metal and a small amount of inactive impurities such as graphite and Fe. 3 C, etc., just form countless tiny primary batteries. In these galvanic batteries, Fe is the negative electrode and the impurity is the positive electrode. Fe loses electrons and is oxidized. Therefore, electrochemica...

AI Technical Summary

Problems solved by technology

[0003] At present, on the one hand, people have higher and higher requirements on the quality of some special-purpose metal products; on the other hand, almost no anti-condensation warning measures have been adopted in various places where metal products are stored