锻压技术

镀锌板冲压成形过程中表面形貌演变规律的研究

英文标题：Surface topography evolution in the stamping process of galvanized sheet

作者：陆宝山王雷刚黄瑶许亚婷

关键词：镀锌板冲压表面形貌形貌模型变形

分类号：TG115.21

出版年,卷(期):页码：2016,41(10):47-51

摘要：

镀锌板冲压成形时，由于塑性变形的诱发作用和接触摩擦的显著影响，表面形貌会随着时间和空间发生动态变化。采用WykoNT1100非接触光学轮廓仪测量了镀锌板杯突实验各变形区的表面形貌，基于统计学方法建立了各变形区的形貌模型。分析结果表明，镀锌板冲压成形时，表面形貌会随着变形增大而发生表面粗糙化，不同的变形区域粗糙化的程度不一样。变形量大的凸模圆角区的微峰高度分布函数曲线较扁平，扁平的曲线表示微峰高度数据分布分散，粗糙化大，锌层脱落；变形量小的顶点区微峰高度分布函数较瘦高，高度分布集中，粗糙化小，锌层完整。同时，接触摩擦也影响着表面形貌的变化。

In the stamping process of galvanized sheet, the surface topography often changes dynamically with time and space due to the induced effect of plastic deformation and significant influence of contact friction. The surface topographies of different deformation zones in Erichsen cupping test were measured by the WykoNT1100 non-contact optical profiler, and the surface topography models of different deformation zones were established based on the statistical method. Analysis results show that the surface topography is roughened with the increase of deformation, and the degrees of roughening in different deformation zones are different during the stamping process of galvanized sheet. The function curve of micro-peak height in punch fillet zone which has serious deformation is relatively flat, which indicates the data distributions of micro-peak height scatters, the roughness values is large, and the zinc coating severely exfoliates. The function curve in vertex zone, however, is lanky with centralized data, small roughness values and intact zinc coating. Moreover, the surface topography is also affected by the contact friction.

基金项目：

国家自然科学基金资助项目（51275216）；江苏高校品牌专业建设工程资助项目（PPZY2015B186）

作者简介：陆宝山(1981-)，男，博士研究生 E-mail：lubs@siit.edu.cn；通讯作者：王雷刚(1963-)，男，教授，博士生导师 E-mail：lgwang@mail.ujs.edu.cn

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