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Category Economy cars
Created 2019-01-23
Owner juniperqq
Title Cost-performance Ratio of Cold Rolling and Hot Rolling
Description What is the difference between hot-rolled coil and high quality cold rolled steel coil china? Hot rolling and cold rolling are the forming processes of steel sheets or profiles, which have a great influence on the structure and properties of steel. Hot rolling is the main method of rolling steel. Cold rolling is usually used to produce small section steel and sheet steel. 1. Classification of Cold Rolling and Hot Rolling of Common Steel The main difference between cold rolling and hot rolling is the temperature of the rolling process. "Cold" is normal temperature and "hot" is a high temperature. From the metallographic point of view, the boundary between cold rolling and hot rolling should be distinguished by recrystallization temperature. That is to say, the rolling below recrystallization temperature is cold rolling, and the rolling above recrystallization temperature is hot rolling. 2. Appearance and surface quality Because the cold coil is obtained after the high-quality cold rolled steel coil china process, and cold rolling also carries out some surface finishing, so the surface quality of the cold plate is better than that of the hot plate, so if there is a higher requirement for the coating quality of the product, such as painting, the cold plate is generally chosen.
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