Evaluation of hybrid welding of pipelines and joint integrity

管道复合焊及接头完整性评估

• 批准号: 543942-2019
• 负责人: Gerlich, Adrian
• 金额: $ 2.12万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=699692
• 关键词: Evaluation; hybrid; welding; pipelines; joint

The proposed collaborative project, "Evaluation of hybrid welding of pipelines and joint integrity" involving the University of Waterloo (UW), and TC Energy Corp. (TCE) will promote the adoption of high performance hybrid arc and laser welding processes for energy infrastructure including pipelines, and help to identify material properties that avoid fracture in welds. The knowledge generated will provide welding performance data and specifications that can be used by TCE and their suppliers involved with other large infrastructure. The application of new advanced welding technology relies on evaluating their performance and comparing this to existing benchmarks such as current semi-automatic arc welding. Utilizing these new processes will promote the competitiveness of welding companies within Canada, and strengthen the status of advanced manufacturing. While evaluating joint mechanical properties, the project will also focus on developing more reliable criteria for predicting when fracture occurs at a weld under extreme loading conditions. Although welds are designed to reach a minimum stress and deformation to avoid fracture in the field, newer high strength linepipe steels may undergo softening after welding. This can limit their deformation in service, and can limit the strength of steels that can be used. By preforming tensile testing of joints with a wide range of properties, the mechanical properties that avoid premature fracture will be determined, and thus guide the development of more robust welding procedures and selection of materials in the future.

提议的合作项目“对滑铁卢大学（UW）和TC Energy Corp.（TCE）（TCE）（TCE）（TCE）的管道和联合完整性的混合焊接的评估将促进采用高性能混合弧和激光焊接过程，以及用于避免使用Frecracture的物质物业的能源基础设施的高性能式焊接过程。产生的知识将提供焊接性能数据和规格，TCE及其供应商可以使用其他大型基础架构。新的先进焊接技术的应用依赖于评估其性能，并将其与现有基准（例如当前半自动电弧焊接）进行比较。利用这些新工艺将促进加拿大境内焊接公司的竞争力，并增强先进制造业的地位。 在评估关节机械性能的同时，该项目还将集中于制定更可靠的标准，以预测何时在极端载荷条件下发生焊缝。尽管焊缝旨在达到最小的应力和变形以避免野外断裂，但较新的高强度线钢钢可能会在焊接后进行软化。这可能会限制其服务中的变形，并且可以限制可以使用的钢的强度。通过对具有广泛特性的关节进行拉伸测试，将确定避免过早断裂的机械性能，从而指导未来更健壮的焊接程序和材料选择的开发。