Investigations on the application of metal containing DLC-coatings as wear protection systems for forging dies

含金属 DLC 涂层作为锻模磨损保护系统的应用研究

• 批准号: 283898001
• 负责人: Professor Dr.-Ing. Bernd-Arno Behrens
• 金额: --
• 依托单位: Institut für Oberflächentechnik
• 依托单位国家: 德国
• 项目类别: Research Grants (Transfer Project)
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/283898001?language=en
• 关键词: Investigations; application; metal; containing; DLC

Within this research project a further development of DLC-coatings for the application as wear protection systems for hot forging tools is focused. It could have been proved already, that doping of DLC-coatings could increase the thermal stability significantly. Thus, the wear of tools for warm forming could be decreased by DLC-coating. Within performed preliminary investigations it was found out, that doping of DLC-coatings with metal containing components could increase the thermal stability so far that an application in hot forging processes is possible.In the proposed project different metal-containing carbon systems (a-C:H:Me-DLC) both with and without adhesive layer (eg CrN) will be deposited on nitrided test substrates. The layer properties will be characterized fundamentally and a selection of variants for subsequent testing under real conditions for hot forging will be made. Friction factors will be identified and the wear will be analyzed under different hot forging processes.In the planned hot forging experiments a fundamental analysis of the coatings will be carried out. This is necessary in order to carry out a comprehensive assessment of the possible suitability of coating systems without testing in an industrial context. For this purpose, three totally different forging processes with different forging processes load types and ring compression tests to determine friction factors are used. The dies are loaded with defined forging cycles and the resulting wear mechanisms are investigated with a fine measurement level. Based on non-destructive and destructive analyze methods, a detailed determination of the present wear mechanisms is possible.

在本研究项目中，DLC涂层作为热锻工具的磨损保护系统的应用的进一步发展是集中的。已经证明，DLC涂层的掺杂可以显著提高热稳定性。因此，DLC涂层可以降低温成形工具的磨损。在进行的初步调查中发现，DLC涂层与含金属成分的掺杂可以增加热稳定性，到目前为止，在热锻工艺中的应用是可能的。在拟议的项目中，不同的含金属碳系统（a-C：H：Me-DLC），有和没有粘合层（如CrN）将沉积在氮化测试基板上。将从根本上表征层的性能，并在热锻的真实的条件下选择后续测试的变体。在不同的热锻工艺下，将确定摩擦因素并分析磨损。在计划的热锻实验中，将对涂层进行基本分析。这是必要的，以便在没有工业环境测试的情况下对涂层系统的可能适用性进行全面评估。为此，使用了三种完全不同的锻造工艺，不同的锻造工艺载荷类型和环压缩试验来确定摩擦系数。模具加载定义的锻造周期和由此产生的磨损机制进行了研究，具有良好的测量水平。基于非破坏性和破坏性分析方法，详细确定目前的磨损机制是可能的。

项目成果

Load-Adapted Surface Modifications to Increase Lifetime of Forging Dies

负载自适应表面改性可延长锻造模具的使用寿命

• DOI: 10.4028/p-5l24m7
• 发表时间: 2022
• 期刊: Key Engineering Materials
• 作者: Hanno Paschke;Martin Weber;Kai Brunotte;Marcel Rothgänger;Tom Petersen;Martin Siegmund;Julius Peddinghaus
• 通讯作者: Julius Peddinghaus