Title

ANÁLISE DE FALHAS EM AÇOS FERRAMENTA ESTUDO DE CASOS

FAILURE ANALYSIS OF TOOL STEELS CASE STUDIES

Authorship

Fagundes, André Luiz da Silva; Barreto, João Fernandes da Silva; Almeida, Nestor Edgar Batista de; Junior, Sergio Domingos

Fagundes, André Luiz da Silva

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Barreto, João Fernandes da Silva

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Almeida, Nestor Edgar Batista de

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Junior, Sergio Domingos

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DOI

10.5151/5463-5463-0002

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Abstract

O presente trabalho tem como objetivo ilustrar causas comuns de falhas prematuras através de casos reais de falhas ocorridas em ferramentas, sejam elas aplicadas em trabalho a quente, trabalho a frio ou moldes plásticos. A metodologia das análises segue basicamente os seguintes roteiros: Histórico da matéria-prima, condições de processamento das peças, comprovação da rastreabilidade, caracterização das propriedades mecânicas e metalúrgicas, resultados e conclusões. Os resultados obtidos sugerem as causas das falhas e orientações são dadas visando disseminar as melhores práticas e evitar reincidências futuras.

The present work has as its main goal to illustrate through real cases common causes for premature failure of tools for both hot and cold working and plastic injection molds. In order to determine the causes of failure, a careful analysis was performed which included historical data of the steel used for the manufacturing of the tool with its mechanical as well as metallurgical characterization, processing conditions of the pieces, tracking proof of the employed material, results and conclusions. The analysis was fully able to pinpoint the causes of failure and suggestions were made to avoid future recurrences of the problems and to disseminate the use of best practices as far as tool steels employment is concerned.

Keywords

Análise de falhas; Trabalho a frio; Trabalho a quente; Moldes plásticos.

Failure analysis; Cold working; Hot working; Plastic injection molds.