Wuhan SiWeiZhongcheng Technology Co.. Ltd
Channel (Steel) / Structural Channel
Cold-rolled thin steel plate is the abbreviation of cold-rolled plate of common carbon structural steel, also known as cold-rolled plate, and commonly called cold plate.
Cold rolling mainly uses low-carbon steel grades and is made from hot-rolled materials.
After pickling to remove the iron oxide scale, cold rolling, annealing, coating and finishing
The finished product is formed through a series of processing procedures. The surface of the cold plate is larger than that of the hot plate
The surface quality is good, the dimensional accuracy is high, and with annealing treatment, it has excellent properties
Good mechanical properties, such as high strength and low yield limit,
Good extensibility and depth. Industrial performance, its mechanical properties and workmanship
The artistic performance is superior to that of hot-rolled thin steel plates in many fields, especially
In the field of home appliance manufacturing, it has gradually replaced hot-rolled thin steel plates and cold-rolled ones
The board has a wide range of applications, such as in the manufacturing of automobiles, electrical products, locomotive vehicles, aviation, precision instruments, food cans, etc.
Cold-rolled products include: cold-rolled plates, coated and plated plates, silicon steel sheets, etc.
There are two types of annealing for cold-rolled steel sheets: bell annealing and continuous annealing.
Bell annealing
It is a heat treatment method in which several steel coils are simultaneously placed in a bell furnace for heating, holding at temperature and cooling, and the process is carried out outside the furnace
Carry out leveling and other treatments.
Advantages: Strong flexibility in product specifications and output changes.
Disadvantages: Long production cycle, low efficiency, simple variety, poor surface quality, and poor performance stability (uniformity) of the same steel coil.
Continuous annealing
It involves uncoiling and welding steel coils continuously through processes such as cleaning, heating, cooling, leveling, and oiling.
Advantages: Short production cycle, high efficiency, wide variety, good surface quality, and excellent performance stability (uniformity) of the same steel coil.
Disadvantage: The product specifications and output changes are not flexible.
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