What Is Hot Rolled Coil?

Hot rolled coils

Hot rolled coils are made of slabs and rolled by rough rolling and finishing units after heating. The hot-rolled and thin-wide steel strip is included. The medium-thick and wide steel strip is the most representative variety, and it accounts for two-thirds of the total output of hot rolled coils.

The width of a medium-thick and wide steel strip is greater than 600mm and the thickness is greater than 3mm. The thickness of the steel strips is less than 3mm and the width greater than 600mm, which are produced by continuous broadband steel hot rolling mills, steckelmills, or thin slab continuous rolling equipment, and delivered in coils. Single steel sheets with the thickness less than 3mm are referred to as hot-rolled sheets, and are usually produced by continuous broadband steel rolling mills or thin slab continuous casting and rolling equipment.

China is the world's largest producer, consumer and exporter of hot rolled coil. The rapid development of the national economy has been supported by the development of the steel industry. The increase in output and quality of hot rolled coil has better met the needs of the country's construction and machinery manufacturing industries.

The forming factors of cold-rolled and hot coils

Rolling is a process in metal making. Rolling is used for many different things. Rolling improves strength and orientation.

The primary metal rolling procedure is to pass the steel from large rolls which give the required thickness and shape. The cold rolled coil is generated after cooling down. It is rolled further to get to the better dimensions.

Rolling does not mean rolling it over. It describes a number of finishing processes. Cold-rolled steel manufacturing is more expensive than hot-rolled coil generation.

Cold rolled steel making needs additional processing. The price of hot-rolled coil making is lower. Cold-rolled steel processing creates internal stresses which release tensions and cause unpredictable twisting of the material.

There is no difference in the mechanical properties of the cold and hot rolled coil. The yield strength of cold rolled steel is higher than the hot rolled coil when it undergoes certain hardening process. The forming factors measure their forming performances because of the differences in the surface qualities of the hot-roll coil and cold-roll coil.

The hole-type rolling machine for the tube steel and high alloy pipe requirements

The traditional hole-type rolling machine is an extension machine. The main purpose is to reduce the process of bending the capillary wall thickness and outer diameter roll passes in the zone of the deformation. There is an improvement in the organization and surface quality.

The tube steel and high-alloy steel pipe requirements must be strictly observed, even if the tube steel tube quality requirements can be relaxed. The tube surface and internal quality requirements may be slightly lower if the stress conditions are better or less. If a large amount of deformation is present, then the tube surface and internal quality have strict requirements.

The technical condition of steel is to ensure the quality and smooth production process as the basis to determine, and with different methods vary, with the technical conditions of steel to improve and increase. There are a variety of tube standards and technical protocols. After baking the tube round, you can go through the piercing.

A punching machine with high production efficiency, product quality, and expanding capacity can be worn a variety of steel. Round tube has been rolled or rolled and then rolled again. To squeeze off the pipe.

The mill is made of steel embryo formed steel. The distribution of the cross section is different because of the residual stress of the hot-rolled steel and cold-formed steel produced by different reasons. The residual stress distribution in the cross section of cold-formed steel bending is a film type.