Advantages in comparison and application of mechanical galvanizing with electrogalvanizing, hot-dip galvanizing and dacromet treatmen
Comparative application advantages with electrogalvanizingIn industrial applications, the process of electroplating will precipitate hydrogen at the cathode, which will precipitate hydrogen as the cathode, this!For high strength steel parts as the cathode by plating on permeability fluorine effect, high strength steel parts in use this as a result, the process of hydrogen embrittlement fracture accidents (at home, often happened quenching high-strength nail in use process.This is related to the application of electroplating process. Developed countries to the security of nail products use specification, refused to nail surface anti-corrosion with easy to produce hydrogen embrittlement fracture of electroplating process) : high strength steel parts of mechanical galvanizing technology on plating does not produce hydrogen harm, this function advantage, is not better than galvanized. In addition, comparison, galvanized machinery industry galvanizing technology advantage is: the operation is simple, the barrel plating is easier to control of the small parts, less energy consumption, half an hour can finish 50 um plating thickness of plating.
Comparative advantages with hot-dip galvanizingGalvanized layer of hot dip galvanizing process, is a basic long-term outdoor anticorrosion coating technology used in steel, this kind of technology used in the large steel parts (power transmission tower, construction steel structure, etc.) on the galvanized anti-corrosion, no doubts: but the fastenings outdoor use, hot dipped zinc plating on the implementation of domestic process, basic is a manual operation, combined with hot dip plating, zinc process characteristics, compared with the characteristics of mechanical galvanizing technology, presents the technical application of the problem, such as: hot dip galvanized coating gasket type, small parts, parts easy adhesion, threaded parts plating, molten zinc coating will block the thread, the nut, must after plating to set of threads; In addition, the surface of mechanical galvanized coatings should be smooth and bright than that of hot-dipped galvanized coatings. In terms of environmental protection, it is a fairly comparable cleaning process.