What is the Main Difference between Hot Rolled and Cold Rolled?

What is the Main Difference between Hot Rolled and Cold Rolled?

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Custom Metal Box
Custom Metal Box

1、Appearance and surface quality:

As the cold plate is hot plate after the cold rolling process, and cold rolling at the same time will be some surface finishing, so the cold plate in the surface quality than the hot plate to come good, if the product after the coating quality of paint and other high requirements, the general choice of cold plate, another hot plate is divided into pickled plate and unpickled plate, pickled plate surface due to pickled so into the normal metal color, but not cold-rolled so the surface is still not cold plate high, not pickled plate. Unpickled plate usually has an oxidized layer on the surface, blackened, or the presence of iron tetroxide ooze layer. But if the storage environment is not good then usually with some rust.

2, Performance:

In general, hot plate and cold plate in the engineering of its mechanical properties are considered no difference, although the cold plate in the cold rolling process there is a certain amount of hardening, cold plate is usually slightly higher than the yield strength of the hot plate, the surface hardness is also higher, the specific need to look at the degree of annealing cold plate, no matter how annealed cold plate strength is higher than the hot plate.

3, Forming performance:

As the performance of hot and cold plate is basically the same, so the forming performance of the influencing factors will depend on the difference in its surface quality, because the surface quality of the cold plate to be better, so generally speaking, the same material steel plate, cold plate than hot plate forming effect comes to some good.

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About Post Author

Yan yifan

One of China's Experienced Sheet Metal Manufacturer and Fabricator Since 2011.
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