| Full text | |
| Author(s): |
Shihomatsu, Andre
;
Button, Sergio Tonini
;
da Silva, Iris Bento
Total Authors: 3
|
| Document type: | Journal article |
| Source: | ADVANCES IN TRIBOLOGY; v. 2016, p. 15-pg., 2016-01-01. |
| 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. (AU) | |
| FAPESP's process: | 11/12927-6 - Hot stamping with controlled stretching of DIN 27MnCrB5 steel sheets |
| Grantee: | Sergio Tonini Button |
| Support Opportunities: | Regular Research Grants |