The process of hot rolling encompasses rolling steel at a temperature above the steel’s recrystallization temperature, which takes place over 1,700 degrees Fahrenheit. Steel that is above the recrystallization temperature can be molded and formed more easily than colder steel, and the steel can start in much larger sizes. It is also cheaper to manufacture than cold rolled steel and is produced without pauses or delays during the process, so the steel doesn’t need to be reheated.
The hot rolled steel will shrink during the process, and the size and shape of steel will be less predictable than cold-rolled steel. Cold-rolled steel is manufactured at temperatures below the recrystallization temperature, which is usually around room temperature.
You may be looking at the different materials that can be used to build different things, and you will find some descriptions that you are not familiar with. How is cold-rolled steel different from hot-rolled steel? Cold-rolled steel is known to be stronger because it is pressed with the pressure of the roller in room temperature. The strain that it can take while it is being pressed makes this harder and stronger.
This may be used for the roof, walls of the house, certain appliances, and so much more. Hot-rolled steel is steel that has been pressed under hot conditions. This means that it can be fixed and shaped according to how people would like it. This type of steel may be used for sheet metal and other agricultural equipment.
E. Barnes, Professional Gamer, Professional Gamer, Washington
Answered May 24, 2019
The main difference between cold rolled and hot rolled steel is the process. Cold rolled steel is processed near room temperature, while hot rolled steel is done with heat over 1,700 EsF. This high heat makes the steel easier to form and work with. Cold rolled steel goes through more processing than hot rolled steel, because it is using the cooled down hot steel.
Cold rolled steels have smooth, oily surfaces, true bars that are square, and better uniformity with tubes. Hot rolled steel surfaces are more scaled due to the extreme temperatures. They are also known for rounded edges and corners, as well as distortions.