As one of the super China steel pipe manufacturers, we are glad to introduce the steel coil to you. You may know that the steel coil ha two completely different manufacturing processes. One of the manufacturing processes is the hot rolled, and the other is cold rolled. Although we can know a little information about these two manufacturing processes from their name, you may also have some questions. Whether there just has the cold rolled steel coil? Whether the different material by the same manufacturing processes can bring different features to the coil? Let us to figure these questions out.
What is hot rolled and cold rolled
The hot rolled
During the hot rolling process, steel is brought to a temperature that exceeds its recrystallization threshold before being shaped by rollers into various forms, including expansive sheets, hefty plates, and integral structural sections. It is the method of choice when larger dimensions and more generous tolerances are essential. While this technique does afford a relaxed precision on measurements and surface quality, it can lead to a surface finish marked by scales due to the high heat involved.
The cold rolled
Conversely, cold rolling sees the steel worked at ambient or near-room temperatures, where it is methodically thinned and shaped by rollers. Preferring this method gives rise to steel of a finer gauge with a significantly smoother finish—a result desired for items that demand exacting standards. The mechanical attributes of work-hardened steel, such as increased strength and enhanced hardness, are a byproduct of cold rolling, making it particularly well-suited for creating items like automotive panels, modern household appliances, and sleek metal furnishings.
There have two common cold rolled coil.
The first is cold rolled galvanized steel coil
It having been refined through the meticulous processes of cold rolling and galvanization.
After this cold rolling, the steel coil will be endowed with a zinc coating, which can make the steel coil can against the elements, via galvanization. Whether through immersion in a vat of molten zinc or the application of an electrochemical dalliance, this protective garb bestows the steel with stalwart corrosion resistance.
The advantages of the cold rolled galvanized steel coil.
A Bastion Against Corrosion: The zinc attire graces the steel coil with superb protection from rust, thereby prolonging the very essence of the metal.
The Pinnacle of Durability: Imbued with increased fortitude through cold rolling, this steel resists daily wear magnificently.
An Acme of Formability: Even under the stress of bending and shaping, the steel gallantly retains its precise dimensions and structural integrity.
The second is cold rolled stainless steel coil
It is a product made for the refined engineering and design. The cold rolled stainless steel coil is produced by-passing stainless-steel strip or sheet through a series of rollers at room temperature or slightly below room temperature. This process helps to achieve the desired thickness, surface finish, and mechanical properties of the stainless steel.
Cold rolled stainless steel coil typically exhibits improved mechanical properties compared to its hot rolled counterpart due to work hardening during the cold rolling process. It often has a smoother surface finish and tighter dimensional tolerances, making it suitable for applications where appearance and precision are important.
All in all, each type of cold-rolled steel coil has its uniqueness and advantages. We should choose the steel plate that suits us according to our own application needs. Only suitable steel plates can bring our product quality and value to the next level. Either, as one of the cold rolled steel coil manufacturers, we are looking forward to work with you.
