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Mô tả
1. OVERVIEW OF COLD ROLLED STEEL COIL
Cold Rolled Steel is a type of steel that has been passed through a rolling mill below its recrystallization temperature from 400℃ to 700℃. Recrystallization of steel is a microstructural phenomenon that is achieved by heating on the other hand distorted grains are substituted by a new combination of grains that nucleate and propagate till the parent grains have been completely transformed.
After going through a series of processing and being cooled at room temperature, hot rolled steel can be transformed into cold rolled steel. Cold rolled steel coils have excellent strength as well as bright surfaces, which add to their aesthetic appeal. Also, they can also be directly applied to produce finished products. Cold rolled steel coils are a versatile product that has always been widely used in various industries. As a cold rolled steel coil supplier in China, CCN is devoted to provide high quality to our clients.
2. MANUFACTURING PROCESS OF COLD ROLLED STEEL COIL
- Cold-rolled steel is typically produced from iron and carbon as the main raw materials. The alloy composition of cold-rolled steel can be adjusted to achieve desired properties such as hardness, strength, and corrosion resistance.
- The manufacturing process of cold-rolled steel includes several stages such as pig iron smelting, steelmaking, processing, and rolling into thin sheets. This process ensures the quality and uniformity of cold-rolled steel.
- After cold-rolled coils are produced, they undergo further machining and heat treatment to enhance hardness and mechanical properties of the material.
3. FEATURES OF COLD ROLLED STEEL COIL
- Superior dimensional tolerances as well as surface finishes.
- Aesthetically appealing, thus ideal for manufacturing products that are used to attract consumer attention.
- After cold rolling, the mechanical properties of the steel like hardness, tensile strength, and yield strength are improved and more consistent.
- It is possible to increase the steel's strength by up to 20% because of strain hardening.
- Steel manufacturers are able to achieve a lower range of thickness than that of hot rolled steel coils.
4. PARAMETER OF COLD ROLLED STEEL COIL
| Standard | JIS / EN / ASTM / GB Standard |
| Grades | SPCC/SPCD/SPCE/SPCEN |
| D01/DC03/DC04/DC05/DC06,ST12/13/14/15 | |
| SAE1006/SAE1008/SAE1010,S35CM/S45CM | |
| 05CuPCrNi, | |
| HC260/300/340/380/420/460/500LA | |
| DP390/DP440/DP590/DP780 | |
| TR590/TR780 | |
| Bake hardening high-strength steel, Dual-phase steel, Automobile steel | |
| Home appliance steel as per the technical protocol agreed by both mill and client. | |
| Sizes | Thickness: 0.15mm—2.5mm Width: 762mm-1850mm |
5. CLASSIFICATION OF COLD ROLLED STEEL COIL
- Mild Cold-Rolled Steel:
This type of cold-rolled steel has high flexibility, is easy to fabricate, and has low cost. It is commonly used in the construction industry, household appliance manufacturing, and many other applications. - Stainless Cold-Rolled Steel:
This type has high corrosion resistance and is widely used in the food industry, healthcare, construction, and various other industries. - Alloy Cold-Rolled Steel:
This type is produced by alloying steel with other elements such as nickel, chromium, manganese, and molybdenum. It possesses special mechanical and physical properties and is used in applications requiring high strength and durability.
