Per: rodrigo santos messner (ARCELORMITTAL TUBARÃO), Gabriel Godinho Alves (ARCELORMITTAL TUBARÃO), Juliano Braz Possati (ARCELORMITTAL TUBARÃO)
Abstract:
A combination of productivity and quality can be obtained a product that adds value to the customer, guaranteeing their satisfaction and, consequently, financial return to the company. During the hot rolling process, quality deviations can occur that impact the final cost of the product. One of these deviations is the inadequate flatness of the strips, which impairs the customer's final application. The objective of the project was to reduce losses due to flatness defects from the Hot Strip Mill (HSM) of ArcelorMittal Tubarão, using the Lean Six Sigma methodology obtained by joining “Lean Manufacturing”, which aims to eliminate waste during the production process and Six Sigma as a management strategy which seeks to maximize the performance of processes. The methodology uses the DMAIC tool, divided into five stages: Define, Measure, Analyze, Improve and Control. The project achieved a 67% reduction in losses (discards and downgrades) in 2020 compared to the previous year (2019). The financial gain was US$ 1.045.000,00.