GOALI/IUCP: Stress Analysis and Optimization of Thin Strip Casting Processes

这个GOALI学术联系机会(GOALI)研究项目侧重于金属凝固过程中的特定行为，这些行为与形成的微结构和过程的机制有关。铝和钢的薄带连铸可以为工业提供机会，通过一种在能源和物流方面具有较低成本和较低环境影响的工艺来生产网状产品。对单辊熔体拖动、双辊熔体拖动和双辊熔体拖动过程进行了研究和模拟，并建立了一定的控制参数。实践中发现，铸带的质量可能很差，会出现几种表面和组织缺陷。这项工作将集中在基本分析各种操作参数对带钢凝固和冷却的影响。将对凝固薄带材进行实验工作和通过计算建模进行应力分析。该GALI项目将包括雷诺金属公司、Armco公司和Transmet公司的参与，并使用这些公司的生产规模铸造机来验证在该项目中开发的模型。预计这些模型将提供有关适当工艺参数的直接信息，以产生改进的热流动路径和诱导的热应力。预计这项工作如果成功，将有助于美国初级金属行业在全球经济中保持竞争力。

This Grant Opportunity for Academic Liaison with Industry (GOALI) research project focuses on specific behavior in solidifying metal that relates to the microstructure being formed and the mechanisms of the process. Thin strip casting of aluminum and steel can provide industry with an opportunity to produce netshape products via a process that has lower cost and lower environmental impact in terms of energy and material flow. Single roller melt drag, twin roller, and two roller melt drag processes were investigated and modeled, with some understanding of controlling parameters being established. In practice it has been found that the quality of the cast strip can be poor, with several surface and microstructural defects occurring. This work will focus on the fundamental analysis of the effects of various operation parameters upon the solidification and cooling of the strip. Experimental work and stress analysis performed by computational modeling of the solidifying thin strip metal will be conducted. This GOALI project will include the participation of Reynolds Metals, Armco, Inc., and Transmet Corporation, with the use of production scale casters at these companies to validate the models developed in this project. It is expected that the models will provide direct information on the appropriate processing parameters to generate improved thermal flow paths and induced thermal stresses. It is also expected that this work, if successful, will help the U.S. primary metals industry remain competitive in the global economy.