Development of tribological and surface characterization methods for evaluation of galling of aluminum alloy sheets

开发用于评估铝合金板磨损的摩擦学和表面表征方法

• 批准号: 499960-2016
• 负责人: Alpas, Ahmet
• 金额: $ 1.82万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=607800
• 关键词: Development; tribological; surface; characterization; methods

Adhesion of aluminum to tool and die surfaces (galling) during shearing operations reduces tool life and deteriorates surface quality of the sheets. Novelis Inc., a primary supplier of sheet aluminum products to the North American automotive manufactures recognizes that in order to increase product quality and production efficiency of sheared aluminum alloy sheets it is necessary to advance new mitigating strategies for preventing aluminum galling. At present, no standard method exists to measure galling in a consistent and reproducible way. This proposal is the initial step of a new collaborative program being set up between Novelis and the applicant at the University of Windsor to investigate the fundamental aspects of aluminum galling. We propose to develop methods for determination of the amount of aluminum transfer on punch dies as a function of die pressure in both dry and lubricated conditions. These will consist of three dimensional non-contact interferometry measurements along with optical microscopy with large depth of field focus. The compositional analyses of galled parts will be conducted by micro-Raman spectroscopy. The results are expected to contribute to the development of a consistent and reproducible method for the determination of galling on surfaces lubricated by industrial forming lubricants. It will also establish whether the production issues related to galling could be simulated at the laboratory scale using tribological tests. The results will be transferred to Novelis.

在剪切过程中，铝与刀具和模具表面的粘附（磨损）降低了刀具寿命，并使板材的表面质量恶化。诺贝丽斯公司是北美汽车制造商铝板产品的主要供应商，该公司认识到，为了提高剪切铝合金板的产品质量和生产效率，有必要提出新的缓解策略来防止铝磨损。目前，还没有一种统一的、可重复的测量磨损的标准方法。诺贝丽斯和温莎大学的申请者正在建立一个新的合作项目，该项目旨在研究铝腐蚀的基本方面。我们建议发展的方法，以确定铝转移量的冲床模具作为一个功能的模具压力在干燥和润滑条件。这些将包括三维非接触式干涉测量以及具有大景深焦点的光学显微镜。磨损零件的成分分析将采用微拉曼光谱进行。该结果有望有助于开发一种一致和可重复的方法来测定工业成型润滑剂润滑表面上的磨损。它还将确定是否可以使用摩擦学测试在实验室规模上模拟与磨损有关的生产问题。结果将转交给诺贝丽斯。