激光织构热冲压模具的摩擦学性能

IF 1.5 Q3 ENGINEERING, MECHANICAL Advances in Tribology Pub Date : 2016-04-03 DOI:10.1155/2016/8106410
Andre Shihomatsu, S. Button, Iris Bento da Silva
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引用次数: 11

摘要

为了提高冲压件的力学性能和表面质量,高强度钢的热冲压技术在汽车工业中得到了不断的发展。研究人员和技术人员面临的主要挑战之一是通过减少冲压过程中由高压和高温引起的磨损来提高冲压模具的寿命。分析了热冲压模具的激光织构,讨论了不同表面织构对模具润滑磨损机理的影响。为此,利用三维表面轮廓仪和扫描电镜进行了实验测试和数值模拟,确定了烫印试验前后的模区织构,表征了烫印试验前后的织构表面形貌。结果表明,激光织构影响了界面模热片的润滑,提高了模具寿命。在本工作中,最佳织构呈现出直径、深度和间距最大的韧窝,经过热冲压试验后,表面形貌和韧窝形态基本保持不变。
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Tribological Behavior of Laser Textured Hot Stamping Dies
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.
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来源期刊
Advances in Tribology
Advances in Tribology ENGINEERING, MECHANICAL-
CiteScore
5.00
自引率
0.00%
发文量
1
审稿时长
13 weeks
期刊最新文献
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