High Manganese Steel Production Fundamentals

钢铁生产商必须前所未有地向轿车和轻型卡车制造商供应更好的高强度钢材。最近的法规规定了严格的车辆温室气体排放和乘客安全目标。正在开发的新型先进高强度钢(AHSS)有望帮助汽车设计师满足这些规格，但其基于的合金概念与目前制造的钢有很大不同。合金锰水平预计为5%至22%，而目前为2%。这些都给通过铸造生产粗钢带来了复杂的问题，几乎没有基本的信息来指导工业过程工程师解决这些问题。这项提案解决了围绕AHSS级生产的基本问题，AHSS级生产是由四名工业支持者开发的，他们将提供验证数据，并有五个具体目标：(1)定义高产锰合金化战略，(2)探索由Hatch Ltd.开发的CRISP炼钢反应堆生产高锰钢的潜力。(3)评估高锰钢的AOD精炼效率；(4)高锰钢的钢包精炼动力学模型，包括改变渣/金属/夹杂物成分和脱硫，并评估与夹杂物形成和去除相关的基础科学问题。(5)通过对高锰钢的凝固特性和热脆特性的测量，确定了连铸高锰钢的安全操作窗口。这些基本的工艺冶金问题对加拿大未来的钢铁和汽车制造至关重要，这两个行业的业务总额超过1000亿美元，雇佣了135,000名员工，这些问题与NSERC SGP目标区域3-制造--特别是新结构材料的商业化和工艺建模相关。

Steel producers must as never before supply car and light truck makers with better high strength steels. Recent regulations impose demanding vehicle greenhouse gas emissions and passenger safety goals. New classes of advanced high strength steels (AHSS) under development promise to help automotive designers meet these specifications but are based on alloy concepts substantially different from currently made steels. Alloy manganese levels of five to 22 percent are contemplated vs. current two percent. These create complex issues for raw steel production through casting, and there is little fundamental information to guide industrial process engineers to resolve them. This proposal addresses basic questions around AHSS grade production, developed with four industrial supporters who will provide validation data, with five specific aims: (1) Define high-yield manganese alloying strategies, (2)Explore the potential for the CRISP steelmaking reactor, developed by Hatch Ltd., to produce high manganese steels. (3)Assess AOD refining efficiency for high Mn steels, (4) Model ladle refining kinetics for high manganese steels, including changing slag/metal/inclusion compositions and desulphurization, and assess basic scientific issues related to inclusion formation and removal. (5)Define safe operating windows for continuous casting high-Mn steels based on measurements of their solidification and hot brittleness characteristics. These basic process metallurgy issues are critical to future Canadian steel and automotive manufacturing, which together generate over $100 billion in business and employ 135,000 persons, and pertain to NSERC SGP target area 3 - Manufacturing - specifically commercialization of new structural materials and process modeling to enable this.