finish rolling
Finish rolling is the last step of metal rolling; during this step, the thickness of a metal sheet or bar is finely reduced to obtain the smooth surface texture and accurate final dimension down to specific tolerances. The object is of final inspection to check if it is fit for use according to the standards.
Key Features:
- Precision Reduction: According to precise final dimensions required for further processing or use, finishing rolling and fine-tuning usually occupy the last stage of thickness adjustment.
- Surface Improvement: This stage generally reduces slight roughness and certain surface defects to achieve a clean and bright finish if the application has surface visibility and higher precision requirements.
- Final Mechanical Properties: It adjusts more of the mechanical properties of metal in finish rolling, such as hardness and tensile strength, so as to be more suitable for end use.
In industries where accuracy, surface imperfection, and mechanical strength are high, finish rolling is indispensable in the automotive, aerospace, and construction industries. By alteration of the metal both on the surface and in the structure, this finishing step contributes more to the capability, reliability, and visual appeal of the product.