What are the differences between cold-rolled coils and chilled coils?

1. Different formation methods:

Chilled coils are obtained by pickling and cold rolling of hot rolled coils. It can be said to be a kind of cold rolled coil.

Cold-rolled coils (annealed): hot-rolled coils are obtained by pickling, cold rolling, bell annealing, flattening and (finishing).

2. Different performance

In terms of performance, because the chilled coils directly obtained from the hot-rolled coils through the cold rolling process undergo work hardening during cold rolling, the yield strength is increased, and some internal stresses remain, and the external performance is relatively "hard".

Cold-rolled coils are made of hot-rolled coils, which are rolled at room temperature and below the recrystallization temperature, including plates and coils. Among them, the delivered in pieces are called steel plates, also called box plates or flat plates; the ones that are long in length and delivered in coils are called steel strips, also called coiled plates.