Heat and mass transfer aspects of laser deposition of Ni/WC wear resistant metal matrix composites

激光沉积 Ni/WC 耐磨金属基复合材料的传热传质

• 批准号: 462535-2013
• 负责人: Mendez, Patricio
• 金额: $ 2.27万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618356
• 关键词: Heat; mass; transfer; aspects; laser

This research and training project focuses on developing a model to predict geometry of metallic coatings deposited using laser cladding technology. Laser cladding offers a degree of process control and low heat input necessary for the deposition of high wear resistant metallic coatings used in oil sands processing, mining, logging, and manufacturing of heavy equipment. Models of laser cladding have been developed, but they rely on complex numerical methods and computer simulations. Practitioners of industry have been unable to understand and implement these models in production, and they continue to use a blind trial and error approach to developing procedures for new alloy systems. This project will study for the first time in a scientific and systematic way, the physics that control process and develop mathematical expressions that will explain relationships between the observed phenomena. The approach will rely heavily on the experimental equipment and expertise in weld coatings at the Canadian Centre for Welding and Joining and University of Alberta. Theoretical work will be combined with high speed video analysis and metallography. The results obtained will be of immediate use to the partner company (Apollo Clad) and will have broad applicability to other companies and industries. This proposal will involve the training of one PhD, two MSc, and four undergraduate students.

这项研究和培训项目集中在开发一个模型来预测使用激光熔覆技术沉积的金属涂层的几何形状。激光熔覆提供了一定程度的工艺控制和较低的热输入，以沉积用于油砂加工、采矿、测井和重型设备制造的高耐磨金属涂层。激光熔覆的模型已经开发出来，但它们依赖于复杂的数值方法和计算机模拟。工业从业者一直无法理解并在生产中实施这些模型，他们继续使用盲目的试验和错误方法来开发新合金系统的程序。这个项目将首次以科学和系统的方式研究控制、处理和发展数学表达式的物理，这些数学表达式将解释观察到的现象之间的关系。该方法将在很大程度上依赖于加拿大焊接和连接中心和艾伯塔大学在焊接涂层方面的实验设备和专业知识。理论工作将与高速视频分析和金相学相结合。所获得的结果将立即用于合作公司(Apollo Clad)，并将广泛适用于其他公司和行业。这项提议将涉及培养一名博士、两名硕士和四名本科生。