Análise do ciclo produtivo de cubos de roda forjados para a redução de não conformidades na microestrutura e dureza

Abstract

In the production process of forged wheel hubs, specific requirements are placed by the customer. These specifications must be met, taking into account an acceptable tolerance, taking as examples the microstructure and hardness of the piece in question. In the cycle analysis, after the part to be forged hot, she leaves the press at high temperature, is immersed in an oil tank and then moved to an oven, where it remains for some time. The reason for these operations is to meet the request by the costumer. However, it is necessary to establish a standard way of operation for the successful implementation of this production, aiming to reduce the number of rework or scraps of the process. When a rework is needed, there must be another heat treatment on the parts that have already passed through the production line, causing a delay in production and reducing the capacity of the line. For the execution of this work, which aims to reduce this level of non-compliances, will be of great value a detailed analysis of the process, more precisely the times and temperatures of heat treatment. Based on the theory of materials, heat treatments will be performed, and metallographic analysis and hardness measurements will be made to check the microstructure. Having achieved the desired microstructure, a standard procedure will be established, providing an optimal production.