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首页> 外文会议>Leeds-Lyon Symposium on Tribology; 20000905-08; Lyon(FR) >Modelling surface texture evolution for a titanium carbide implanted tool surface undergoing wear
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Modelling surface texture evolution for a titanium carbide implanted tool surface undergoing wear

机译：建模的碳化钛植入工具表面经受磨损的表面纹理演变

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摘要

Tribological behaviour (friction and wear) during the forming of sheet metals is strongly influenced by the presence of very small scale (nano-metric) surface structures, or textures, on the sheet or tool surface. Although of very small size, surface textures are able to carry pockets of lubricant into the heavily loaded tool-workpiece contact, leading to reductions in friction and tool wear. Such surface textures are also found to be critical in determining the surface finish after painting for products such as car body panels which are produced by forming operations. Indirect Structuring, or Self-Forming produces a tool surface structure in a two stage process, and this structure is maintained during further wear of the surface. The process depends on implanting the tool surface with an array of metal carbide implants, giving repeating local gradients of material properties across the surface. This paper describes an experimental and accompanying theoretical model for prediction of the height difference between such implants and the surrounding substrate following wear. To reveal the key mechanisms which determine the surface texture the problem has been reduced to the study of a single thermal implant idealised as a cylinder of implant material surrounded by a concentric cylinder of the substrate.
机译：钣金形成过程中的摩擦学行为（摩擦和磨损）受钣金或工具表面上非常小尺寸（纳米）的表面结构或织构的影响。尽管尺寸非常小，但表面纹理却能够将润滑剂袋带入重负荷的工具-工件接触中，从而减少了摩擦和工具磨损。还发现这种表面质地对于确定在涂漆后通过成形操作生产的产品例如车身面板的表面光洁度至关重要。间接结构化或自成形在两个阶段的过程中产生了工具表面结构，并且在表面进一步磨损期间保持了这种结构。该过程取决于用一系列金属碳化物植入物植入工具表面，从而在整个表面上重复提供材料特性的局部梯度。本文介绍了一种实验模型和伴随的理论模型，用于预测此类植入物与周围基材在磨损后的高度差。为了揭示确定表面纹理的关键机制，该问题已简化为对单个热植入物的研究，该热植入物被理想化为植入物材料的圆柱体，并被基板的同心圆柱体包围。

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