Accelerated development of welding electrodes for abrasion-corrosion resistant overlay

加速开发耐磨腐蚀堆焊焊条

• 批准号: 503423-2016
• 负责人: Li, Leijun
• 金额: $ 7.13万
• 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=618424
• 关键词: Accelerated; development; welding; electrodes; abrasion

Abrasive wear and corrosion of equipment and consumables have a very large impact on Canadian industry. There is a strong market demand for welding electrodes for iron-based alloy overlays that can resist both abrasive wear and corrosion. Our long-term goal is to better understand the welding metallurgy for wear and corrosion resistant overlays. The objective in this application is to efficiently design a new self-shielding, high-Cr, metal-cored welding wire for overlay that is resistant to wear and corrosion. The technical objectives of the project are to study and control the weld microstructure so that the overlay will meet the requirements: (a) the wear resistance measured by ASTM standard is 0.19g max, and (b) the corrosion resistance measured by ASTM standard is no worse than that of the conventional chromium carbide overlay plates. This proposed research and training project will apply a systematic metallurgical approach to the critical industrial need for cost effective overlay to counter both wear and corrosion. The experimental core for this project involves accelerated alloy selection and wire design and microstructure characterization at University of Alberta, wire fabrication at a SSAB associated facility, and wear and corrosion testing of experimental overlay at a commercial lab. The industrial sponsor, SSAB, has made its R&D and production systems available for this project. The physical metallurgy lab at the University of Alberta has specialized equipment for measuring phase transformations in steels, mechanical properties, metallography, crystal structures, and electron microscopy. The experimental tasks will be performed within a theoretical framework of interactions between chemical composition, process parameters, phase transformations, crack resistance, hardness, and corrosion resistance. The outcome of this project will directly benefit the industrial partner SSAB through the establishment of chemical composition, process windows, and providing the currently unavailable overlay wire for their business.

设备和消耗品的磨粒磨损和腐蚀对加拿大工业产生非常大的影响。市场对既能抵抗磨料磨损又能抵抗腐蚀的铁基合金堆焊焊条的需求强劲。我们的长期目标是更好地了解耐磨和耐腐蚀堆焊层的焊接冶金学。本应用的目标是高效设计一种新型自保护、高铬、金属芯堆焊焊丝，具有耐磨损和耐腐蚀的特点。该项目的技术目标是研究和控制焊缝显微组织，使堆焊层满足以下要求：（a）ASTM标准测得的耐磨性为0.19g max，（b）ASTM标准测得的耐腐蚀性不比传统碳化铬堆焊板差。该拟议的研究和培训项目将应用系统冶金方法来满足对具有成本效益的堆焊层以对抗磨损和腐蚀的关键工业需求。该项目的实验核心包括阿尔伯塔大学的加速合金选择、线材设计和微观结构表征、SSAB 相关设施的线材制造以及商业实验室实验覆盖层的磨损和腐蚀测试。工业赞助商 SSAB 已为该项目提供其研发和生产系统。阿尔伯塔大学的物理冶金实验室拥有用于测量钢的相变、机械性能、金相、晶体结构和电子显微镜的专用设备。实验任务将在化学成分、工艺参数、相变、抗裂性、硬度和耐腐蚀性之间相互作用的理论框架内进行。该项目的成果将通过建立化学成分、工艺窗口以及为其业务提供目前无法使用的覆盖线，使工业合作伙伴 SSAB 直接受益。