Promoting and Sustaining an Adaptive Response in Tool Materials

促进和维持工具材料的适应性响应

• 批准号: RGPIN-2019-07096
• 负责人: Veldhuis, Stephen
• 金额: $ 2.84万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=739306
• 关键词: Promoting; Sustaining; Adaptive; Response; Tool

The overall objective of my research group is to rapidly develop custom tooling and tune process parameters to meet specific workpiece and manufacturing process requirements. Significant improvements in manufacturing process performance have been achieved through advanced surface engineering of tooling. The approach taken to date is largely static, with properties typically deemed locked in during deposition. Our approach is dynamic, leveraging the natural adaptive response on a cutting tool's surface to self-organize under extreme friction. Through this mechanism beneficial protective and lubricating tribofilms are formed in the friction zone. This effect is similar to how callouses form on one's hand to provide protection against future injury during hard work. My previous Discovery grant identified tribofilms that serve a beneficial function in machining applications. We demonstrated the ability to influence their formation through coating composition, microstructure control and by adjusting the machining process conditions. We are now commercializing these results with our industry partners and realizing significant performance improvements in their operations. To further advance our knowledge, my group is now closely integrating characterisation and analysis, including modeling, nano-indentation, scratch and tribometer testing, with experimental results gained through industry-scale testing on our lab CNC machines and subsequent in-depth characterisation of wear. The research program described in this proposal will help form the foundation of our knowledge on self-organization and allow us to improve our fundamental understanding of how to promote and sustain an adaptive response in a specific manufacturing process. Expected discoveries include: 1.the identification of beneficial tribofilms for the machining of difficult to cut materials and the organization of this information into functional surface treatments largely focusing on physical vapour deposited (PVD) coatings; 2.novel PVD coatings which promote and sustain the adaptive response during machining identified in the first activity; 3.tool features and process conditions which enhance and fully utilize the unique properties of adaptive surfaces identified and developed in the two previous areas. The results will be organized into: 1.a database of tribofilm materials for specific tool and workpiece materials factoring in local processing conditions related to temperature and load; 2.surface treatment formulations involving PVD coating composition and coating process parameters together with pre and post surface treatments; 3.a methodology for designing tools and tuning process parameters which further promote and sustain the adaptive response over time. Realizing a systematic approach to tool design and process tuning based on a fundamental understanding of the adaptive response of a surface will provide Canadian manufacturers with a significant competitive advantage.

我的研究小组的总体目标是快速开发定制工具并调整工艺参数，以满足特定的工件和制造工艺要求。通过先进的模具表面工程，制造工艺性能得到了显着改进。迄今为止采取的方法基本上是静态的，通常认为属性在沉积过程中被锁定。我们的方法是动态的，利用切削工具表面的自然自适应响应在极端摩擦下进行自组织。通过这种机制，在摩擦区域形成有益的保护性和润滑性摩擦膜。这种效果类似于手上形成的老茧，以防止未来在艰苦工作中受伤。我之前的发现资助发现摩擦膜在加工应用中发挥着有益的作用。我们展示了通过涂层成分、微观结构控制和调整加工工艺条件来影响其形成的能力。我们现在正在与行业合作伙伴一起将这些成果商业化，并在他们的运营中实现显着的绩效改进。为了进一步提高我们的知识，我的团队现在正在将表征和分析紧密结合起来，包括建模、纳米压痕、划痕和摩擦磨损试验机测试，以及通过在我们的实验室数控机床上进行行业规模测试以及随后深入的磨损表征获得的实验结果。该提案中描述的研究计划将有助于奠定我们自组织知识的基础，并使我们能够提高对如何在特定制造过程中促进和维持适应性响应的基本理解。预期的发现包括： 1. 识别对难切削材料加工有益的摩擦膜，并将这些信息组织到主要关注物理气相沉积 (PVD) 涂层的功能性表面处理中； 2.新型PVD涂层，可促进和维持第一个活动中确定的加工过程中的适应性响应； 3.工具特征和工艺条件，增强并充分利用在前两个领域中识别和开发的自适应表面的独特属性。结果将被组织成： 1.特定工具和工件材料的摩擦膜材料数据库，考虑到与温度和负载相关的局部加工条件； 2.表面处理配方，包括PVD涂层成分和涂层工艺参数以及前后表面处理； 3.设计工具和调整工艺参数的方法，随着时间的推移进一步促进和维持自适应响应。基于对表面自适应响应的基本理解，实现工具设计和工艺调整的系统方法将为加拿大制造商提供显着的竞争优势。