The cost of hot - dip galvanized bolts and the application of high - strength hot - dip galvanized bolts
Hot galvanized bolts are very low in handling costs, this is compared with other paint coating, the use of hot galvanized rust is the cost of other rust reduction costs. In fact, are rust-proof, anti-corrosion on the basis of the lowest cost, and the longer the protection will be the more manufacturers and businesses welcome, because this can save a lot of their own costs. The initial cost of hot-dip galvanized bolts is low compared to other coatings.
Because the other paint is a labor-intensive state, and hot-dip galvanizing is a high-mechanized process, just close control of the factory construction can be changed, so the cost of hot-dip zinc will be more than other protection The coating is low. Then whether it is for the manufacturer, or the enterprise is no reason not to choose this hot galvanized to protect the fasteners.
In life, the use of hot-dip galvanized bolts is more common, especially for its advantages, so that it can be in the market can be rapid development, but also to the vast number of consumers love. What are the significant advantages of galvanized bolts in use?
1, due to the special treatment of its surface to have a relatively smooth appearance, and its surface is relatively smooth, not prone to flash, and showing the characteristics of silver-white. In the production, its thickness should be able to control within a certain range of appropriate choice.
2, and in the use of excellent performance, with good tensile properties, less prone to fracture phenomenon, but also in the use of temperature hazards, to ensure its mechanical properties.
3, galvanized bolts have excellent corrosion resistance of the performance, it has a good use, but also has a strong tightness, generally less prone to loose phenomenon.
The post-treatment of hot-dip galvanized bolts includes three aspects, passivation, pre-phosphating and oiling. First of all, the hot-dip galvanized bolts passivation treatment, can improve the galvanized layer surface structure and gloss, improve the corrosion resistance of galvanized layer and service life, and can improve the adhesion of the coating and the base metal. Passivation treatment is mainly using chromate passivation. In the passivation solution added some activator, such as fluoride, phosphoric acid or sulfuric acid, so that passivation after the thicker chromate film. When the fluoride in the passivation solution can reduce the surface tension of the strip, accelerate the film formation reaction, and can increase the chemical polishing effect, so that the passivation film fine light.