中国机械工程2012，Vol.23Issue(1)：109-112,4.
金银纪念币压印成形中的缺陷预测
Defect Prediction in Coining Process for Au-Ag Commemorative Coins
钟文 1柳玉起 1许江平 1胡云明 2李胜强 2赖茂明 2孙志国2
作者信息
- 1. 华中科技大学材料成形与模具技术国家重点实验室,武汉 430074
- 2. 沈阳造币有限公司,沈阳 110042
- 折叠
摘要
Abstract
Flash line, light band and insufficient filling are the main defects in coining process for Au-Ag commemorative coins. Based on a special-purpose FEM software-COINFORM, numerical simulations for coinages were carried out. A radial friction power model was built for the prediction of light band defects. With the analysis of metal flow, the mechanism of flash line was studied on the basis of the experimental results. The former algorithm was improved that the simulation would stop only when the blank was fully contacted with the forming tools in all direction. The reaction force of blank at the stop time predicts the forming force in coining. Experimental results show that the predicted force is valid for eliminating insufficient filling.关键词
金银纪念币/压印成形/缺陷预测/COINFORMKey words
Au-Ag commemorative coin/coining process/defect prediction/COINFORM分类
矿业与冶金引用本文复制引用
钟文,柳玉起,许江平,胡云明,李胜强,赖茂明,孙志国..金银纪念币压印成形中的缺陷预测[J].中国机械工程,2012,23(1):109-112,4.
