The first stage of CRCA manufacturing includes acid cleaning the Hot-rolled Steel Coil. It begins
by immersing the metal in acid to dissolve surface oxides and impurities. Subsequently, thorough
rinsing eliminates any remaining acid residues and contaminants. To prevent rust formation, the
cleaned metal surface is coated with oil. This meticulous treatment ensures the preparation of
clean, rust-resistant steel coils. Acid cleaning lays the foundation for achieving the desired
product quality and performance. The process sequence is crucial for subsequent manufacturing
stages.
The CRCA process begins with pickling hot rolled carbon steel in an HCL continuous pickling
line, removing oxide scales via hydrochloric acid treatment. Subsequently, the steel undergoes
cold rolling in a sophisticated Cold Rolling Complex equipped with a 1500mm & 1250mm width 6Hi
Rolling Mill with AGC and 4Hi Skin Pass. The cold rolling stage reduces thickness and enhances
surface finish, controlled by AGC for precision. Following cold rolling, the steel coils enter a
Batch Annealing Furnace (BAF) for annealing, tempering internal stresses, and improving
ductility. Our product range includes HR Pickled, HR Pickled
Skin Pass, CR Full Hard, CR Bake/Semi Hard & CRCA
Steel Coils, tailored to diverse commercial and automotive needs. This meticulous
process, coupled with quality assurance measures, ensures the production of high-quality CRCA
steel coils meeting stringent industry standards.
