Desgaste de uma matriz de forjamento a quente considerando o amaciamento devido ao revenimento

• Ano de defesa: 2010
• Autor(a) principal: Paula Cibely Alves Flausino
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Matrizes; Revenimento; Forjamento a quente; Corpus moedores; Engenharia metalúrgica
• Link de acesso: http://hdl.handle.net/1843/BUDB-8DHKZR

Hot forging is one of the most conventional metal-forming processes used in the production of critical parts in various industries. Actually, it is widely used in the manufacturing of automobiles and industrial machine components. Hot work die steels are commonly used for hot forging dies subjected to temperatures ranging from 315 to 650°C. Die service life is considerably shortened due to the thermal softening of surface layer, caused by the high thermal load and long contact time between the dies and the deforming material. Also, the die service life depended on wear and the plastic deformation of dies can be to a large extent determined by finite element analysis, wear and thermal softening tests. The purpose of this work is analyse, through finite elements modeling, the prediction of wear in H13 dies for hot forging considering the thermal softening due to tempering.