If you want to know the difference between
hot-rolled steel and
cold-rolled steel, you need to understand the classification of steel. If classified according to the quality of steel plates, some are high-quality, some are ordinary, the difference is actually classified according to the content of P and S elements. According to the forming method, some are forged, some are cast, and some are cold-rolled or hot-rolled.
So, what is the difference between hot rolled steel and cold rolled steel?
First, the processing technology is different
Cold-rolled steel plate literally means cold working, hot-rolled steel plate is hot working, and the temperature of crystallization is different. Cold-rolled steel sheets are below the crystallization temperature, while hot-rolled steel sheets need to be pressed above the crystallization temperature.
Second, the scope of application is different
Cold-rolled steel sheets can be used in the automotive industry or in small appliances, washing machines, refrigerators, etc., including building materials. Hot rolled steel sheets are mainly used for steel structures or mechanical parts, including bridge construction.
Third, the performance is different
The cold-rolled steel plate is allowed to bend the section, and the hot-rolled steel plate cannot have a local curved surface, and the generated stress is not the same, so the distribution of the cross-section will also be different. The local stress of cold-rolled steel sheet should be bending, and the hot-rolled steel sheet should be film type. Meanwhile, in terms of rigidity, the hot-rolled steel sheet is slightly higher.
Hunan centerway steel co.,ltd operates hot-rolled coils, open plates, check plates, medium plates, manganese plates, boiler plates, weathering plates, bridge plates, high-strength plates, etc. Mechanical equipment processing and various profiles, pipes, and steel structure processing materials requirements.
