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料经济性，汽车公司正在增加使用先进的高强度钢（AHSS）和采用液压成形的管状结构用于汽车白色车身。然而，在管状设计中成功使用新的AHSS需要这些等级的成功电阻焊（ERW）。新型AHSS的高C、Si、Mn和Al导致了结合层脱碳，形成了降低结合层强度的非金属颗粒。拟议的项目将使用工业和实验室方法来了解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胶层脱碳。然后将使用热分析测量非金属形成的动力学。利用工业和实验室数据，将设计新的工艺参数来优化胶层性能。这些参数的有效性将使用热机械模拟进行测试。成功的参数将在ArcelorMittal Dofasco（AMD）轧管机上进行试验。该项目将i）表征Mn、Si和Al非金属形成的动力学; ii）开发ERW工艺中非金属形成的模型; iii）表征焊接温度和镦粗如何导致胶层脱碳; iv）开发一种具有成本效益的离线技术来模拟生产油管;以及v）开发稳健的ERW参数以优化新型AHSS中的焊接性能。该项目开发的技术将有助于提高加拿大钢铁行业的竞争力，使加拿大钢管生产商能够参与49，000吨的市场。先进的管材将供应汽车零部件供应商，其中许多是加拿大的。将这些部件集成到汽车设计中有可能在车辆寿命期间将车辆温室气体排放量（GHG）减少1.5吨，在加拿大销售的所有车辆中累计达到3吨;加拿大2030年温室气体减排目标的1.5%。