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.

背景塔是汽车钢项目的全球领先供应商之一。当前，随着汽车行业面临的主要挑战，重量轻巧和改善崩溃的道理；热冲压是众所周知的方法，可改善该行业中使用的某些组件的强度与重量比，从而在较低的厚度下具有可比的优势。这是通过将高级高强度钢与深度绘图过程的充分理解的好处联系起来的马氏体硬化特征来提高塑料表现性能，同时消除了弹簧的后退，从而起作用。在此过程中，将钢加热到可能中的温度，然后迅速冷却以获得所需的微观结构特性。在此过程中可能会出现两个问题，首先在加热期间发生脱键作用，这可能会对机械性能产生负面影响，其次发生氧化意味着在形成之前需要清洁爆炸。如果可以克服这些问题而不侵犯市场中现有的IP，则可以通过基于英国的原始设备制造商（OEMS）来利用大量的新业务（〜6000T），从而在其本地供应。基于ALSI的涂料在解决这些挑战的同时满足其他关键OEM要求方面表现出了很大的希望，但是在过去的〜20年中，Arcelor Mittal已提交了一套专利，这意味着这项技术受到了强烈的保护，因此，为了利用这一潜在的新业务，需要替代方案。 Project Aims/Opprotigivesarcelor Mittal拥有一套强大的专利，可以保护其ALSI热浸涂层技术，这意味着需要寻求替代方案。此外，基于ALSI的涂层仅提供屏障腐蚀保护，而不是电腐蚀，通常在金属涂层的钢中看到。该项目将检查新型的金属涂层，可用于提供电阵容保护并在热冲压操作中生存。首先，将对可能的技术进行文献综述，以评估相对于由业务部门和最终用户确定的一组关键绩效指标（KPI）的不同解决方案类型。完成此操作后，将选择似乎有希望的技术进行实验室规模的可行性研究，一种涂料沉积的可能方法是Swansea University的热浸模拟器。涂层样品将进行表征和测试，以确保其性能符合期望，并将报告所有这些发现。