May 20, 2025
As a cutting-edge cultural exchange center, Guangzhou also provides an excellent environmental foundation for prefabricated buildings, and industry insiders from all over the country come here to exchange and collect industry information or choose suitable suppliers.
Rolling is the main process for deforming materials. The purpose of degreasing is to remove the lubricating grease attached to the rolled products during rolling, to avoid contamination of the steel surface during annealing, and to prevent carbon increase in stainless steel.
Annealing includes intermediate annealing and final heat treatment. Intermediate annealing is performed to eliminate work hardening caused by cold deformation through recrystallization, restoring the material's plasticity and reducing the metal's resistance to deformation. The purpose of final heat treatment is not only to eliminate hardening through recrystallization but also to achieve the required microstructure (such as various textures, etc.) and product performance (such as deep drawing, electromagnetic properties, etc.) according to the technical requirements of the product.
Finishing includes inspection, shearing, straightening (flattening), printing, sorting, and packaging. Cold-rolled products have very high packaging requirements to prevent surface scratches during transportation. In addition to the aforementioned processes, there are also specific procedures for producing certain special products. For example, when rolling silicon steel sheets, decarburizing annealing must be carried out before cold rolling, followed by coating, high-temperature annealing, stretching straightening (see tension straightening), and tempering.
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