Characterizing and optimizing bondline reactions during electric resistance welding of advanced high strength steels

先进高强度钢电阻焊过程中胶层反应的表征和优化

• 批准号: 572129-2022
• 负责人: Biro, ElliotEJ
• 金额: $ 4.37万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 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=760328
• 关键词: Characterizing; optimizing; bondline; reactions; during

To improve passenger safety and vehicle fuel economy, automotive companies are increasing use of both advanced high strength steels (AHSS) and adopting hydroformed tubular construction for automotive body-in-white. However, successful use new AHSS in tubular design requires successful electric resistance welding (ERW) of these grades. The high C, Si and Mn, and Al of new AHSS leads to bondline decarburization the formation of non-metallic particles that degrade bondline strength.The proposed project will understand ERW weld defects using both an industrial and laboratory approach. Industrial trials will be conducted to determine how welding parameters affect non-metallic formation and bondline decarburization. Then kinetics of non-metallic formation will be measured using thermal analysis. Using both industrial and lab data, new processing parameters will be designed to optimize bondline properties. The effectivity of these parameter will be tested using thermomechanical simulation. Successful parameters will be trialed on ArcelorMittal Dofasco's (AMD) tube mill.This project will i) characterize the kinetics of Mn, Si, and Al non-metallic formation, ii) develop a model for formation of non-metallics in the ERW process; iii) characterize how welding temperature and upset lead to bondline decarburization; iv) develop a cost-effective off-line technique to simulate production tubing; and v) develop robust ERW parameters to optimize weld properties in new AHSS. The know-how developed from this project will contribute to the competitiveness of Canada's steel industry, allowing Canadian tube producers to participate in a 49,000 T market. The advanced tubes will supply automotive parts suppliers, many of whom are Canadian based. Integration of these parts in to automotive designs have the potential to reduce vehicle greenhouse gas emissions (GHG) by 1.5 T over the vehicle life, cumulating to 3 MT for all vehicles sold across Canada; 1.5% of Canada's 2030 GHG reduction targets.

为了提高乘客安全性和车辆燃油经济性，汽车公司正在越来越多地使用高级高强度钢（AHSS），并采用水理成型管状结构来进行汽车内车身。但是，在管状设计中成功使用新AHS需要这些等级的成功电阻焊接（ERW）。新AHSS的高C，SI和MN以及AL导致键盘脱氧化的非金属颗粒的形成，从而降解了粘结线强度。拟议的项目将使用工业和实验室方法来理解ERW焊接缺陷。将进行工业试验，以确定焊接参数如何影响非金属形成和键键式脱氧化。然后，将使用热分析测量非金属形成的动力学。使用工业和实验室数据，将设计新的处理参数以优化键线属性。这些参数的效率将使用热机械模拟测试。成功的参数将在Arcelormittal Dofasco（AMD）管磨坊上进行试用。此项目将i）表征Mn，Si和Al非金属形成的动力学，II）开发了一个在ERW过程中形成非金属物质的模型； iii）表征焊接温度和障碍如何导致粘结线脱氧； iv）开发一种具有成本效益的离线技术来模拟生产管道； v）开发强大的ERW参数，以优化新AHSS中的焊接性能。该项目从该项目中发展的知识将有助于加拿大钢铁行业的竞争力，从而使加拿大的管子生产商能够参与49,000吨市场。高级管将提供汽车零件供应商，其中许多是加拿大的。将这些零件集成到汽车设计中有可能使车辆寿命的车辆温室气体排放（GHG）减少1.5 t，在加拿大销售的所有车辆中累积3吨；加拿大2030年温室气体减少目标的1.5％。