Otimização na preparação metalográfica de controle de qualidade em um processo de cementação para redução de tempo de preparo

Abstract

This work aims to optimize the metallographic preparation of quality control in a cementation process, focusing on reducing preparation time. Cementation is a widely used thermochemical treatment in the metallurgical industry, particularly for components that require high wear resistance, such as shafts and gears. Although essential, this process is complex and can become a bottleneck in production due to the numerous steps involved before final approval for the grinding process. The research is based on a quantitative analysis, where data on the Lead Time of the cementation process were collected. The results indicated that the preparation time is excessive, directly impacting the operational efficiency of the company. Identifying the steps that contribute most to this delay was crucial for developing optimization strategies. To address this issue, continuous improvement methodologies, particularly Kaizen, were implemented, focusing on waste elimination and promoting incremental improvements. The application of Kaizen in the cementation process allowed for a critical analysis of the involved steps, enabling the identification of improvement points that could be implemented to reduce preparation time without compromising the final product's quality. Additionally, the work includes a literature review that contextualizes the importance of cementation and metallographic preparation, discussing best practices and innovations in the field. The review also emphasizes the need for rigorous control during sample preparation, as the quality of metallographic analysis is fundamental to ensuring that components meet market standards. The results demonstrated that through the optimization of cementation process steps and the implementation of continuous improvement practices, it was possible to significantly reduce preparation time. This reduction not only increased production efficiency but also improved customer satisfaction, as they began to receive high-quality products within shorter timeframes. In conclusion, this work contributes to the machining field by presenting practical solutions that can be applied in industrial environments, promoting continuous improvement and competitiveness in the market. The findings highlight the importance of adequate planning and the adoption of continuous improvement methodologies to ensure efficiency and quality in machining and cementation processes.