cold rolled stainless steel coils supplier
Cold-rolled coil is base on hot rolled raw material, at room temperature under the recrystallization temperature of rolling, roll delivery called steel belt, also called rolled coil.
Commonly used in the steel industry, different from hot roll. Refers to the direct roll rolling at room temperature with a certain thickness and winding machine rolls into the whole volume of steel belt. Compared with hot-rolled coil, cold-rolled coil surface bright, high degree of finish, they can have more stress, often in the annealing treatment after cold rolled, hot-rolled coil, than, cold rolled coil surface light, bright and clean degree is high, but will have more stress, often in the annealing treatment after cold rolling.
Not be heated in the production process, so there is no hot rolled often appear defect such as pitting and tin oxide, good surface quality, high degree of finish. And the size of the cold rolled products of high precision, the product performance and organization can satisfy some special requirements, such as electromagnetic performance, deep drawing performance, etc.
cold rolled stainless steel coils, is actually a long, narrow and roll supply sheet steel,
Volume and tablet is a nearly cut packaging.
Chill roll coil is after pickling hot-rolled coil plate, cold rolled. One of the volume can be said to be the manufacture.
Manufacture (annealing) : after pickling hot-rolled coil plate, cold rolled coil, bell type annealing, flat, (finishing).
The difference mainly has three points:
1, appearance, general chill roll coil is a bit .
2, surface quality, structure and dimension precision manufacture is better than cold hard rolled plate.
3, performance, because of the hot rolled plate through cold rolling process directly by the chill roll plate in cold rolling when the work hardening, lead to increase in yield strength, and some of the internal stress, residual external performance for a "hard" so called hard cold rolled plate.
So the yield strength: hard cold rolled plate is greater than the volume manufacture (annealing state), make manufacture volumes (annealing) more conducive to stamping forming.
General manufacture (the default delivery status for the annealed state.
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