Carbon Steel Coil

Product Introduction of Carbon Steel Coil

It is made from slabs (mainly continuous cast slabs), which are heated and then made into strips by roughing and finishing mills.

The hot steel strip from the last finishing mill is cooled to the set temperature by laminar flow and rolled into coils by a coiler.

The cooling coils are processed into steel sheets, flat coils, and slit strip products through different finishing lines according to the different needs of customers.

Specifications of Carbon Steel Coil:

Application of Carbon Steel Coil:

Steel coil products have high strength, good toughness, and many steel specifications, so they are also widely used, from general engineering structures to

the manufacture of automobiles, bridges, ships, boilers, and pressure vessels. For different applications, the requirements on material properties, surface quality, size,

and shape accuracy of steel sheets are also different. Therefore, it is necessary to understand the varieties, materials, characteristics,

and uses of steel coil products in order to achieve economic and reasonable utilization.

FAQ:

1. How to polish carbon steel coils?

◆ Mechanical polishing: This method is usually done manually, which is to smooth out the concave and convex position of the steel coil.

In this process, props such as sandpaper and oil stone strips are used. By mechanically polishing the steel coil, the surface quality of the steel coil can be improved.

◆ Chemical polishing: A chemical reaction is used in this polishing method to flatten the raised position of the steel coil plate.

The biggest advantage is that there is no need to use too complicated equipment in this process and the polishing effect is good.

◆ Electrolytic polishing: The principle of electrolytic polishing is very similar to chemical polishing, but the effect of electrolytic polishing is better because this polishing method

uses electrolyte to flatten the raised position on the surface of the steel coil.

2. The difference between cold-rolled coil and hot-rolled coil

There are three main differences between cold rolled coil and hot rolled coil.
◆ In appearance, the color of cold hard coil is a little darker.
◆ In terms of surface quality, structure and dimensional accuracy, cold hard rolled coil is better than cold rolled plate.
◆ In terms of performance, the cold hard coil directly obtained from hot rolled coil through cold rolling process, process hardening occurs during the cold rolling process,

so that the yield strength and internal stress residual part increases, and it looks “hard” from the outside, so it is called cold hard coil. Generally speaking,

the default delivery condition of cold rolled coil is annealed. Nowadays, most steel is sold in coils. After a company purchases a coil, it needs to be uncoiled before it can be processed.

Generally speaking, it is used more in the automotive industry. Of course, many automotive industries outsource the uncoiling process and the plants use the uncoiled sheets directly.

3. What are the advantages of cold rolled steel coils and hot rolled steel coils?

Advantages of cold rolled steel coils.
Fast forming speed, high yield, no damage to the coating. Can be made into a variety of cross-sectional forms to meet the needs of the conditions of use;

cold rolling can make the steel produce a large plastic deformation, thereby increasing the yield point of steel.