Cold-rolled products production process
1.Must first consider the demand for the quality of the final product, such as thickness, hardness, microstructure, formability, followed by the production equipment capacity constraints, and considering the cost of production of the steel production process is slightly different.
2.Relative to the hot-rolled products, cold-rolled products of a more complex production process.
3.Organized into the following processes:
Cold-rolled steel coil: slab → hot-rolled → hot-rolled finishing → pickling → (a. annealing) → cold-rolled, → (b. cleaning) → (c. annealing) → (d. quenched and tempered) → cold-rolled fine the whole oiled → packaging


Hot-rolled products production process

• Production process of hot-rolled products can be divided into hot-rolled quenched and tempered steel coils (HRC), pickling oiled steel coil (PO), pickling annealing coil (PA) and pickling spheroidized steel coils (PA -S) and other four categories.
• Hot rolled coil output, quenched and tempered rolling and leveling the finishing line after a hot rolled quenched and tempered steel coils (HRC).
• HRC pickling process descaling, and then coated with anti-rust oil antirust pickling oiled steel coil (PO), PO hardness, poor formability. In order to improve the moldability, the general first HRC pickling to descaling and then annealed (annealing) process, changes its microstructure, lower hardness, improved formability. Annealing can be divided into general annealing and ball annealing, the former is called pickling annealing steel coils (PA), which is called pickling ball or coils (PA-S) after annealing steel coils need Reapply oil rust prevention.

Issue Time:		2024-05-23
Expire Time:		2025-02-08