Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/320414
Type: Artigo de Periódico
Title: Tribological Behavior Of Laser Textured Hot Stamping Dies
Author: Shihomatsu
A; Button
ST; da Silva
IB
Abstract: Hot stamping of high strength steels has been continuously developed in the automotive industry to improve mechanical properties and surface quality of stamped components. One of the main challenges faced by researchers and technicians is to improve stamping dies lifetime by reducing the wear caused by high pressures and temperatures present during the process. This paper analyzes the laser texturing of hot stamping dies and discusses how different surfaces textures influence the lubrication and wear mechanisms. To this purpose, experimental tests and numerical simulation were carried out to define the die region to be texturized and to characterize the textured surface topography before and after hot stamping tests with a 3D surface profilometer and scanning electron microscopy. Results showed that laser texturing influences the lubrication at the interface die-hot sheet and improves die lifetime. In this work, the best texture presented dimples with the highest diameter, depth, and spacing, with the surface topography and dimples morphology practically preserved after the hot stamping tests.
Subject: Strength Boron Steel
Process Parameters
Wear Mechanisms
Surfaces
Friction
Sheets
Editor: HINDAWI PUBLISHING CORP
Rights: aberto
Identifier DOI: 10.1155/2016/8106410
Address: https://www.hindawi.com/journals/at/2016/8106410/abs/
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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