High temperature normalisation: the impact of scale growth on surface cosmetics and performance of carbon steel conveyance tubes

高温正火：氧化皮生长对碳钢输送管表面外观和性能的影响

• 批准号: 2597133
• 金额: --
• 依托单位: Swansea University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2597133
• 关键词: temperature; normalisation; impact; scale; growth

Background/OverviewTata Steel's low carbon steel conveyance tubes undergo a 900 degree C normalisation to remove an undesirable heat affected zone caused by high frequency induction welding. This reheating however, generates significant surface conditioning issues and instigates severe processing inefficiencies due to insufficient protection from high temperature oxidation.Scale growth on the surface of the tube from normalisation, causes unwanted spallation of subsequent added value coatings compromising Install 235 tube as a high performance, hot formed product. This project aims to improve surface quality and prevent spallation and through delivering a uniform coating, reduce yield loss and failures whilst providing a marketability benefit for conveyance products. This project will combine high temperature furnace replication experiments with advanced imaging techniques to discover the factors influencing scale growth and the effects of novel preventative coatings on surface quality. Techniques include SEM, EDS, XRD, Profilometry, White-Light Interferometry, Advanced Microscopy and Raman Spectroscopy.Project AimsThis project will combine high temperature furnace replication experiments with advanced imaging techniques to discover the factors influencing scale growth and the effects of novel preventative coatings on surface quality. Techniques include SEM, EDS, XRD, Profilometry, White-Light Interferometry, Advanced Microscopy and Raman Spectroscopy.The research engineer will work jointly with TATA Steel (Port Talbot) to investigate how methodologies so developed may be applied to steel slab, used as feedstock for tube production.Aims:- To investigate how the mill processing conditions impact surface quality after normalisation due to scale growth.- To determine suitable methods in which surface quality may be improved, due to alterations in the thermal cycle or through coating solutions prior to reheating.- Develop new techniques and technologies to assess product quality and facilitate methods of improving adhered oxide remnant after descaling.- To analyse scale reduction due to new coating solutions before optimising subsequent preventative solutions for the improvement of surface finish of the Tata conveyance products. - A comprehensive analysis of the causes of surface delamination and the impact of furnace conditions on cosmetic issues due to scale.- Optimisation of current and novel coating solutions to improve the surface quality of the conveyance tubes.- Development of a new and improved application technique to enhance coating performance and provide a high-quality surface finish to the steel tubes.

背景/概述Tata Steel的低碳钢输送管经过900摄氏度的正火处理，以消除高频感应焊接造成的不良热影响区。然而，这种再加热会产生严重的表面处理问题，并由于不足以防止高温氧化而导致严重的加工效率低下。由于正常化，管道表面上的水垢生长，导致后续附加值涂层的不必要的飞溅，损害了Install 235管道作为高性能热成型产品的性能。该项目旨在提高表面质量，防止飞溅，并通过提供均匀的涂层，减少产量损失和故障，同时为运输产品提供市场效益。该项目将联合收割机高温炉复制实验与先进的成像技术相结合，以发现影响氧化皮生长的因素和新型预防涂层对表面质量的影响。技术包括SEM，EDS，XRD，轮廓测量，白光干涉，先进显微镜和拉曼Spectroscopy.Project AimsThis项目将结合联合收割机高温炉复制实验与先进的成像技术，以发现影响规模增长的因素和新型预防涂层对表面质量的影响。技术包括SEM、EDS、XRD、轮廓测量、白光干涉测量、高级显微镜和拉曼光谱。研究工程师将与塔塔钢铁（塔尔博特港）合作，研究如何将如此开发的方法应用于用作钢管生产原料的钢板。目的：-研究轧机加工条件如何影响由于氧化皮生长而正常化后的表面质量。-为了确定合适的方法，其中表面质量可能会得到改善，由于在热循环或通过涂层溶液重新加热之前的变化。开发新的技术和工艺，以评估产品质量，并促进改善烧结后附着的氧化物残留的方法。在优化后续预防性解决方案以改善塔塔运输产品的表面光洁度之前，分析由于新涂层解决方案而导致的水垢减少。- 全面分析表面分层的原因以及炉况对因结垢引起的外观问题的影响。优化当前和新型涂层解决方案，以提高输送管的表面质量。开发新的和改进的应用技术，以提高涂层性能，并为钢管提供高质量的表面光洁度。