The surface anti-corrosion treatment of mechanical anchor bolts generally adopts galvanizing technology. Common galvanizing methods include hot-dip galvanizing and cold galvanizing. To distinguish from the gloss presented by the galvanizing process, the surface of hot-dip galvanizing is relatively rough and the color is darker; the surface of cold-dip galvanizing is smooth and flat, light and beautiful. However, the galvanized layer of the hot-dip galvanizing treatment method is relatively thick, generally 30um-60um. Cold galvanizing is a physical treatment, and the galvanized layer is generally between 5um and 30um. Therefore, the anti-corrosion ability of hot-dip galvanized mechanical anchor bolts is higher than that of cold-dip galvanized mechanical anchor bolts, and it is more suitable for steel parts for outdoor work and highly corrosive environments. Most of the mechanical anchor bolts treated with cold galvanizing are used for rust prevention of indoor parts. It can be seen that whether it is hot-dip galvanized anti-corrosion treatment or cold galvanized anti-corrosion treatment, the corrosion resistance of mechanical anchor bolts will be greatly improved, and its application will be more extensive.
However, how do we know that the corrosion resistance of mechanical anchor bolts that have been treated with anti-corrosion is up to the standard? In fact, it is very simple, only need to measure the corrosion resistance of mechanical anchor bolts to know.
Although it takes a long time to see the results of the corrosion resistance performance of mechanical anchors, we can simulate the actual environmental conditions and use the accelerated corrosion resistance method to evaluate. The main detection methods are: salt spray test, condensate water climate test, sulfur dioxide test, artificial climate box test, etc. In this way, when we purchase mechanical anchor bolts, we can ask the manufacturer to issue the corresponding project inspection report, and the actual measured parameter values ​​can be seen at a glance.
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