Coil up the core support product structure design, and constantly upgrading, energy conservation, the products are widely used in the production of color steel tile required for various types of industrial plants, warehouses, gas stations rise building construction and large-scale decoration.
Chilled Coil is hot-rolled coil pickling, cold rolling obtained can be said to be a cold rolled coils.
Hot-rolled coil pickling, cold rolling, batch annealing, and smooth. (Finishing) obtained.
Difference between the two main points:
1, the appearance, in general a little chilled coil micro black.
2, surface quality, structure, size precision cold-rolled plates better than chilled coil.
3, the performance, because the work hardening after cold rolling hot rolled coil obtained directly chill occurs when cold-rolled steel coil, resulting in increased yield strength, and remain a part of the internal stress, external performance for the more 'hard' it Chilled said coil and cold rolled coil (annealed): coil is chilled before rolling through the hood-type annealing obtained after annealing the hardening phenomenon, the internal stress is eliminated (greatly reduce falls), namely yield strength is reduced close to the front so that the yield strength of cold-rolled: Chilled coils, cold rolled coils is greater than (annealed), making cold rolled coils (annealing) is more conducive to stamping general cold rolled coils default delivery. annealed state.