Tecnologia em Metalurgia, Materiais e Mineração
Tecnologia em Metalurgia, Materiais e Mineração
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Failure analysis of hot stamping die

Joana Prisco Pinheiro; Paula Fernanda da Silva Farina

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The need to reduce weight combined with increased resistance of automotive safety parts leads to an increase in the application of the hot stamping process.. The hot stamping die behavior knowledge is of great importance to optimize the process. In this way, the present work proposes the analysis of the predominant wear mechanisms of an end-of-life hot stamping die. The initial part of a failure analysis was carried out, with visual and microscopic analysis, hardness and residual stress measurements, preserving the die. It was found that the predominant failure mechanisms in the hot stamping die were adhesive, impact and abrasive wear. Furthermore, the cracks found in the die are associated not only to wear, but also to mechanical stress. Finally, due to the characteristics of the application, overtempering may occur in the die and, consequently, a decrease in the wear resistance of the die in such regions.


Hot stamping die; Failure analysis; Wear mechanisms


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