What Is The Difference Between Cold Rolled Steel And Hot Rolled Steel?

As the name suggests, there are some differences between cold and hot rolled steel. But this is not because of the difference in their grades or specifications, but because of how they are processed in the factory or factory during the manufacturing process.

Hot-rolled steel uses high temperatures to roll steel, while steel is processed at cold temperatures when it has been quenched by the annealing process (hot elements and slow cooling).

What is hot rolled steel?

• It is produced by rolling steel at high temperature (usually 1700 degrees F), which even exceeds the recrystallization temperature of steel.
• When steel exceeds its recrystallization temperature, it can be easily formed, formed, or enlarged.
• This type of  Hot rolled carbon steel coil is cheaper compared to the old ones as it does not require any further heating or processing.
• However, this type of welded steel does not provide many opportunities to adjust the size and shape of the material – as it cools and shrinks compared to the cold.

Application of hot-rolled steel

This type of steel is used to make steel bars for railroads and I-beams in welding and construction settings. This type of steel is best suited to product technology that does not require precise shapes and tolerances.

What is Cold Rolled Steel?

• This is basically an extension of hot-rolled steel – one that has been further processed.
• the steel is later processed in the cold red feed, and when the material has cooled sufficiently, it is reheated and slowly brought to the cooling point through the annealing process.
• This process changes the surface finish of the steel and tight dimensional tolerances.
• This process is followed by “a36 cold rolled steel plate” which involves 4 steps – cold drawing, turning, grinding and polishing.
• These four stages are implemented because each has its own advantages. Cold drawing eliminates the need for expensive thermal treatment and increases the tensile strength and yield of the material. Rotation helps remove roughness from the surface. Grinding helps to tighten some tolerances and polishing helps to create a surface finish in the finished product.
• Cold heat rolled because it gives the finished product a good surface, tolerance and straightness.

The use of cold rolled sheet

It is also suitable for project requirements where surface conditions, concentricity, tolerance and straightness are extremely important.