Galvanized coil

A coiled plate is a type of steel plate. It is a long and narrow thin steel plate supplied in rolls. For coils and flat plates, it is almost a cut package; a cold coiled plate is a hot-rolled coil that has been pickled and cold-rolled. owned. It can be said to be a type of cold rolled coil. Cold-rolled coils (annealed state): Hot-rolled coils are obtained by pickling, cold rolling, bell annealing, flattening, and (finishing).

(1)Normal spangle coating spangle coating

During the normal solidification process of the zinc layer, the zinc grains grow freely to form a coating with obvious zinc flower morphology.

(2)minimized spangle coating

During the solidification process of the zinc layer, the zinc grains are artificially restricted to form the tiniest possible zinc flower coating.

(3)Spangle-free coating

By adjusting the chemical composition of the plating solution, a coating with a uniform surface without visible spangles is obtained.

(4) zinc-iron alloy coating

The steel strip after passing through the galvanizing bath is heat treated so that the entire coating forms an alloy layer of zinc and iron. This coating has a dark gray appearance with no metallic luster and is easily powdered during the violent forming process. It is suitable for use in addition to general A coating that can be painted directly without further processing other than cleaning.

(5) Differential coating differential coating

For both sides of the galvanized steel sheet, coatings with different zinc layer weights are required.

(6)Skin pass

Finishing is a cold rolling process with slight deformation on galvanized steel sheets for one or more of the following purposes.

Improve the surface appearance of galvanized steel sheets or be suitable for decorative coatings; temporarily reduce to a minimum the slip lines (Lüders lines) or creases produced during the processing of finished products.

Cold-rolled plate is the abbreviation of ordinary carbon structural steel cold-rolled plate, commonly known as cold plate, sometimes mistakenly written as cold-rolled plate. Cold-rolled plates are made from ordinary carbon structural steel hot-rolled steel strips, which are further cold-rolled into steel plates with a thickness of less than 4mm. Cold-rolled plates are made from hot-rolled coils as raw materials and rolled at room temperature and below the recrystallization temperature.