DC04 Cold rolled coil(annealed state): is obtained by hood annealing of cold hardened coil before rolling. After annealing, its work hardening phenomenon and internal stress are eliminated (greatly reduced), that is, the yield strength is reduced to close to that before cold rolling.
DC04 Cold rolled coil is rolling under recrystallization, but it is generally understood as rolling using room temperature rolled materials. Aluminum cold rolling is divided into plate rolling and foil rolling. Plates with a thickness of 0.15~ or more are called plates, and foils with a thickness of 0.15~ or less are called foils. Europe and the United States mostly use 3~6 continuous rolling mills as cold rolling equipment.
Due to the lack of heating during the production process, there are no defects such as pitting and iron oxide scale that often occur in hot rolling, and the surface quality is good and the finish is high. Moreover, the dimensional accuracy of cold-rolled products is high, and the performance and organization of the products can meet some special use requirements, such as electromagnetic properties, deep drawing properties, etc.
| Specifications | thickness is 0.2-4mm, width is 600-2 000mm, and steel plate length is 1 200-6 000mm. |
| Grade | Q195A-Q235A, Q195AF-Q235AF, Q295A(B)-Q345 A(B); SPCC, SPCD, SPCE, ST12-15; DC01-06 |
| Performance | Mainly low carbon steel grades, requiring good cold bending and welding performance, as well as certain stamping performance. |
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