Galvanized coil is a steel plate with zinc treatment on the surface. The galvanizing treatment can effectively prevent the steel surface from being oxidized and extend the service life of the steel. The production process of galvanized coil mainly includes the following process steps:
1. Surface treatment: First, the surface of the steel plate to be processed is cleaned, degreased and rusted to ensure that the surface is clean and flat, so as to ensure the adhesion of the galvanized layer.
2. Pickling and phosphating: The surface-treated steel plate is treated by pickling and phosphating process to form a phosphate layer on the surface to improve its bonding with zinc.
3. Hot-dip galvanizing: The treated steel plate is treated by hot-dip galvanizing process, that is, the steel plate is immersed in high-temperature zinc liquid, so that the liquid zinc forms a uniform zinc layer on the surface of the steel plate.
4. Cold coiling: The steel plate after hot-dip galvanizing is subjected to cold coiling process to make its surface smoother and flatter, and increase the brightness of the galvanized layer.
5. Cutting and packaging: Finally, the cold rolled galvanized coils are cut and packaged to produce galvanized coils of various specifications and sizes.
The entire galvanized coil processing process requires multiple steps to ensure that the steel plate surface is clean and flat, and the galvanized layer is evenly attached to achieve anti-corrosion and corrosion resistance. Galvanized coils are widely used in construction, furniture, automobiles and other fields, with high economic benefits and social significance.
Post time: Jul-17-2025