Cradle to Gate
Identity ID
44d94392-dd67-41b5-a9b8-28e15ea43c2e
Materials
Associated ID
c3a5ab8b-03b4-4662-9086-5776ac0da17a
Included activities starts
Included activities ends
Description
Q235B carbon steel produced via cold rolling not only enhances its strength and hardness but also improves surface finish and dimensional accuracy. Q235B cold-rolled hard coils exhibit excellent weldability and machinability, making them widely used in manufacturing structural components, bridges, ships, vehicles, high pressure vessels, and building structures. The production process of cold-rolled hard coils includes pickling of hot rolled coils and cold rolling, covering energy consumption, material input, waste treatment, and environmental emissions associated with the manufacturing process. This dataset is compiled from data sourced from multiple origins.
Activity Description
The production process of cold-rolled hard coils includes pickling and cold rolling of hot-rolled coils, covering energy consumption, material consumption, waste treatment, and environmental emissions required during the production process.
Process Description
Cold-rolled hard coil is a type of steel coil processed by cold rolling, falling under the same category as cold coils, cold plates, and cold-rolled strip steel. It is produced through cold rolling of hot-rolled steel coils after pickling to remove the oxide scale. Produced from Q235B carbon steel via the cold-rolling process, it not only enhances strength and hardness but also improves surface finish and dimensional accuracy. Q235B carbon steel cold-rolled hard coil exhibits excellent weldability and processability, making it widely used in the manufacturing of structural components, bridges, ships, vehicles, high-pressure vessels, and building structures.
Time period
2021
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Using hot rolled steel coils as raw material, after pickling to remove the oxide scale, continuous cold rolling is carried out to produce hard-rolled coils. Due to cold work hardening caused by continuous cold deformation, the strength and hardness of the hard-rolled coils increase, while toughness and ductility decrease. Therefore, their stamping performance is relatively poor, and they can only be used for parts requiring simple deformation.