Micro-particle absorption and removal for future steels

未来钢材的微粒吸收和去除

• 批准号: RGPIN-2020-06898
• 负责人: Dogan, Neslihan
• 金额: $ 2.04万
• 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: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=758250
• 关键词: Micro; particle; absorption; removal; future

Controlling the effects of micro-particles (inclusions) on steel properties has become critical in meeting the high-performance requirements of current advanced steel materials.The proposed research program aims to better understand the interaction between inclusions and slag to improve the removability of inclusions from liquid steel and to control the type of inclusions remaining in the product.The medium-term objective of this research is to develop a mathematical model of inclusion dissolution employing detailed representations of all critical phenomena.One project will develop comprehensive kinetic data on the dynamic changes in complex oxide inclusion size as a function of slag composition, temperature and oxygen partial pressure using confocal laser scanning microscope (CSLM) to determine the dissolution kinetics and mechanisms; another project will study the inclusions behavior at the interface between liquid steel and slag.The third project will use the data for the development of a mathematical model incorporating effects of convection and particle size to predict inclusion dissolution rates under industrial conditions.In the longer-term, the experimental and modeling techniques established in this work will be employed in understanding a broader range of inclusions-removal in the refining of steel. The proposed approach will improve our understanding of refining reactions occurring in steelmaking by (1) continuous in-situ observation as opposed to post analysis of quenched samples using dip technique; and (2) development of reliable kinetics models to optimize the process conditions for inclusion control in ladle steelmaking and casting processes.The proposed research provides an excellent level of fundamental research training incorporating a state of the art confocal laser scanning microscope for graduate students.This work will engage two Ph.D.s, one M.A.Sc and three undergraduate students.They will have the opportunity, through the McMaster Steel Research Centre, to interact with a wide range of steel companies and will have excellent employment opportunities when their studies are finished.The proposed kinetic model will assist steel producers in avoiding those problematic inclusions that lead to processing and quality problems and will assist in predicting "lowest cost" production strategies since better process control will result in efficient raw materials utilization and reduced refractory consumption. This is in Canada's economic interest, as it will contribute to the competitiveness and sustainability of Canada's steel producers, who are also key suppliers to the auto-parts industry, by providing them with cost and quality advantages to remain competitive in the high-value end of the steel market.Product quality improvements include improved formability and surface quality also benefiting Canada's auto parts industries.

控制微粒的影响（夹杂物）对钢性能的影响已成为满足当前先进钢材高性能要求的关键。拟议的研究计划旨在更好地了解夹杂物和炉渣之间的相互作用，以提高夹杂物从钢水中的去除能力，并控制产品中残留的夹杂物类型。本研究的一个长期目标是建立夹杂物溶解的数学模型，该模型采用所有关键现象的详细描述。一个项目将建立复杂氧化物夹杂物尺寸作为炉渣成分的函数的动态变化的综合动力学数据，使用共聚焦激光扫描显微镜（CSLM）测定温度和氧分压以确定溶解动力学和机制;另一个项目将研究夹杂物在钢水和炉渣之间的界面行为。第三个项目将利用这些数据建立一个数学模型，对流和颗粒尺寸的影响，以预测夹杂物的溶解率在工业条件下。从长远来看，在这项工作中建立的实验和建模技术将用于了解更广泛的夹杂物，在精炼钢的去除。该方法将通过（1）连续的现场观察而不是使用浸渍技术对淬火样品进行后分析来提高我们对炼钢过程中发生的精炼反应的理解;以及（2）开发可靠的动力学模型，以优化钢包炼钢和铸造过程中夹杂物控制的工艺条件。拟议的研究提供了一个优秀的基础研究培训水平，艺术共聚焦激光扫描显微镜的研究生。这项工作将从事两个博士，一个硕士和三个本科生。他们将有机会，通过麦克马斯特钢铁研究中心，与广泛的钢铁公司互动，并将有很好的就业机会时，他们的研究完成。拟议的动力学模型将有助于钢铁生产商避免这些问题夹杂物，并将有助于预测“最低成本”生产策略，因为更好的过程控制将导致有效的原材料利用和减少耐火材料消耗。这符合加拿大的经济利益，因为这将有助于提高加拿大钢铁生产商的竞争力和可持续性，这些钢铁生产商也是汽车零部件行业的主要供应商，为他们提供成本和质量优势，以保持在钢铁市场高价值端的竞争力。产品质量的改进包括改进的成形性和表面质量，也有利于加拿大的汽车零部件行业。