Development of wire consumables for overlay deposition by hot-wire TIG welding

热丝TIG焊堆焊焊丝耗材的开发

• 批准号: 402756-2010
• 负责人: Gerlich, Adrian
• 金额: $ 1.53万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=471891
• 关键词: Development; wire; consumables; overlay; deposition

The proposed work will involve the evaluation of Ni-based wear resistant composite coatings reinforced with tungsten carbide, deposited using a novel welding process that uses a pulsed current wire heater. The performance of these Ni-WC composites can be optimized by ensuring a high fraction of the tungsten carbide particles are retained during fabrication. These coatings are presently applied mainly by plasma transferred arc welding, where overheating of the material often leads to the formation of a wide range of other brittle carbides with inferior wear resistance. This Engage project will establish the feasibility of using HC Starck Ni-WC wire products in conjuction with a novel hot-wire TIG approach, and set the groundwork for further collaborations. A combination of quantitative electron microscopy (SEM, EPMA, and AES), microhardness indentation, and wear testing will evaluate the performance of the overlay made using a combination of HC Starck material and the hot-wire TIG system incorporating a pulsed wire power supply. The intent is that this Engage grant would set the background and conduct preliminary benchmark studies required for a subsequent CRD application.

拟议的工作将涉及评估镍基耐磨复合涂层增强碳化钨，沉积使用一种新的焊接工艺，使用脉冲电流丝加热器。 这些Ni-WC复合材料的性能可以通过确保在制造过程中保留高比例的碳化钨颗粒来优化。 这些涂层目前主要通过等离子体转移电弧焊接来施加，其中材料的过热通常导致形成具有较差耐磨性的各种其他脆性碳化物。 该Engage项目将确定HC Starck Ni-WC丝产品与新型热线TIG方法结合使用的可行性，并为进一步合作奠定基础。 定量电子显微镜（SEM、EPMA和AES）、显微硬度压痕和磨损试验的组合将评价使用HC Starck材料和包含脉冲丝电源的热丝TIG系统组合制成的覆盖层的性能。其目的是，这个参与赠款将设置背景，并进行初步的基准研究所需的后续CRD应用程序。