Development of Novel Coatings for Hot Stamping Processes

开发用于热冲压工艺的新型涂层

• 批准号: 2884766
• 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: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2884766
• 关键词: Development; Novel; Coatings; Hot; Stamping

BackgroundTata is one of the leading global suppliers of automotive steel projects. With light weighting and improvement of crashworthiness being 2 of the key challenges facing the automotive industry at present; hot stamping is well known approach for improving the strength to weight ratio of certain components used in this industry, enabling comparable strengths at lower thickness. This works through linking the martensitic hardening characteristic exhibited by advanced high strength steels with the well understood benefits of deep drawing processes to enhance plastic formability performance while eliminating spring back. In this process, the steel is heated to austenising temperatures, formed and then cooled rapidly to give the desired microstructural properties. Two problems can occur during this process, firstly decarburisation takes place during heating which can negatively affect mechanical properties, secondly oxidation occurs meaning there is a requirement for blast cleaning before forming. If these issues can be overcome without infringing on existing IP in the marketplace there is a considerable amount of new business (~6000t) which could be exploited through UK based Original Equipment Manufacturers (OEMs) localising their supply. AlSi based coatings have shown a great deal of promise at solving these challenges while fulfilling other key OEM requirements, however Arcelor Mittal have filed a suite of patents over the last ~20 years meaning this technology is very strongly protected, therefore an alternative would be required in order to exploit this potential new business. Project Aims/ObjectivesArcelor Mittal has a strong suite of patents protecting their AlSi hot dip coating technology meaning that alternatives need to be sought. In addition, AlSi based coatings only offer barrier corrosion protection as opposed to galvanic corrosion which is typically seen in metallically coated steels. This project will examine novel metallic coatings which can be used to provide galvanic protection and survive the hot stamping operations. Firstly, a literature review of possible technologies will be performed to appraise different solution types relative to a set of Key Performance Indicators (KPIs) determined by the business unit and end users. Once this is completed, technologies which appear promising will be down selected for a laboratory scale feasibility study, one possible method for coating deposition is the hot dip simulator at Swansea University. Coated samples will be characterised and tested to ensure their performance is in line with expectations and all of these findings will be reported.

背景塔塔是全球领先的汽车用钢项目供应商之一。轻量化和提高耐撞性是当前汽车行业面临的两大挑战；热冲压是众所周知的方法，用于提高该行业中使用的某些部件的强度与重量比，从而以较低的厚度实现可比的强度。这是通过将先进高强度钢所表现出的马氏体硬化特性与众所周知的深拉工艺的优点联系起来，以增强塑性成形性能，同时消除回弹。在此过程中，钢被加热至奥氏体化温度，成型，然后快速冷却以获得所需的微观结构性能。在此过程中可能会出现两个问题，首先在加热过程中发生脱碳，这会对机械性能产生负面影响，其次会发生氧化，这意味着在成型前需要进行喷砂清理。如果这些问题能够在不侵犯市场上现有知识产权的情况下得到解决，那么英国的原始设备制造商 (OEM) 可以通过本地化供应来开发大量新业务（约 6000 吨）。 AlSi 基涂层在解决这些挑战方面表现出了巨大的希望，同时满足其他关键 OEM 要求，但安赛乐米塔尔在过去约 20 年中申请了一系列专利，这意味着该技术受到了非常严格的保护，因此需要一种替代方案来开发这一潜在的新业务。项目目的/目标安赛乐米塔尔拥有一套强大的专利保护其 AlSi 热浸镀涂层技术，这意味着需要寻找替代方案。此外，AlSi 基涂层仅提供屏障腐蚀保护，而不是金属涂层钢中常见的电偶腐蚀。该项目将研究新型金属涂层，这些涂层可用于提供电流保护并在热冲压操作中幸存下来。首先，将对可能的技术进行文献综述，以根据业务部门和最终用户确定的一组关键绩效指标（KPI）评估不同的解决方案类型。一旦完成，将选择看起来有前途的技术进行实验室规模的可行性研究，涂层沉积的一种可能方法是斯旺西大学的热浸模拟器。将对涂层样品进行表征和测试，以确保其性能符合预期，并将报告所有这些结果。