Galvanized Bolts Explained: Uses, Benefits, and Characteristics

Galvanizing is a metallurgical reaction process. From a microscopic point of view, the hot-dip galvanizing process is two dynamic balances: thermal balance and zinc-iron exchange balance. When the steel workpiece is immersed in molten zinc at about 450°C, the workpiece at room temperature absorbs the heat of the zinc liquid. When it reaches above 200°C, the interaction between zinc and iron gradually becomes obvious, and zinc penetrates into the surface of the iron workpiece. As the temperature of the workpiece gradually approaches the temperature of the zinc liquid, an alloy layer containing different ratios of zinc and iron is formed on the surface of the workpiece, forming a layered structure of the zinc coating. As time goes by, different alloy layers in the coating show different growth rates. From a macroscopic point of view, the above process is manifested as the workpiece is immersed in zinc liquid, the zinc liquid surface boils, and when the zinc-iron reaction gradually balances, the zinc liquid surface gradually calms down. When the workpiece is lifted out of the zinc liquid surface and the workpiece temperature gradually drops below 200°C, the zinc-iron reaction stops, the hot-dip galvanized coating is formed, and the thickness is determined.

Galvanized bolts

Bolts are indispensable in daily life and industrial production. Bolts are widely used. The application scope of bolts includes: electronic products, mechanical products, digital products, power equipment, and electromechanical mechanical products.

Bolts are used in ships, vehicles, hydraulic engineering, and even chemical experiments. Anyway, bolts are used in many places. Especially the precision bolts used in digital products.

Bolt inspection can be divided into two types: manual and machine. Manual is the most primitive and most commonly used consistent inspection method. In order to minimize the outflow of defective products, general production company personnel conduct visual inspections on products to be packaged or shipped.

Prospect has completed a large number of tests on various screws and bolts, and has selected medium-sized bolts (M6-M10), galvanized with a thickness of about 5-8 microns, and annealed without hydrogen embrittlement for appearance and corrosion resistance.

Hot dip galvanized ordinary bolts performance grade: 4.8-10.9, specification M12-M48. Hot dip galvanized coating thickness ≥ 54μm. Quality and standards: This product is produced according to the requirements of GB5780-2000, GB41-2000, and the mechanical properties comply with GB3980.1-2000, GB3980.2-2000.