Micro Crack of Aluminum Sheet During Cold Rolling

• 作者: Chaohui Zhang Chenhui Zhang Sisi Liu
• 来源期刊: 力学国际期刊(英文)
• 学科: 医学
• 关键词: Aluminium SHEET Micro CRACK COLD ROLLING EMULSION
• 年，卷（期）: 2011,（4）
• 页码范围: 169-175
• 页数: 7页
• 分类号: R73

摘要

The micro crack of aluminum sheet during cold rolling lubricated with emulsions is investigated. Experi-ments show that micro cracks occur after cold rolling process and this is attributed to various parameters, for instance, the thin oxide film formed at the sheet surface. The micro crack spacing thus becomes an important parameter which deserves more concerns. The aspect ratio of these micro cracks is then analyzed theoreti-cally, which takes into consideration of the oxide fracture process. The good agreement between the obser-vations and the theoretical predictions validates the analysis. The approach can shed some new lights on the mechanical process of aluminium sheet during cold rolling.