Surface Nano-Crystallisation by shot peening using in-process monitoring and temperature control (NanoPeen)

使用过程监控和温度控制通过喷丸进行表面纳米结晶 (NanoPeen)

• 批准号: 132881
• 金额: $ 13.85万
• 依托单位: SANDWELL UK LIMITED
• 依托单位国家: 英国
• 项目类别: Feasibility Studies
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=132881
• 关键词: Surface; Nano; Crystallisation; shot; peening

Shot peening is an established method of improving fatigue life by imparting compressive stress in the surface of parts. However, it has been known for many years that shot peening can also generate a surface nanocrystalline (SNC) layer which can give a step change in part performance, including increased wear and corrosion resistance, as well as antibacterial properties. Unfortunately, it has not been possible to commercially exploit this beneficial “by product” due to the difficulty in controlling the shot peening process to give an even SNC layer. In addition, localised heat build-up during the shot peening process reduces the speed with which the SNC layer is formed which means that processing time can be an order of magnitude longer than for conventional shot peening thus making the process commercially unattractive. The NanoPeen project seeks to overcome this barrier to adoption. Proof-of-concept will be demonstrated by testing the improved performance of an industrial demonstration part treated using the process.

喷丸处理是一种通过在零件表面施加压应力来提高疲劳寿命的成熟方法，但多年来人们都知道喷丸处理还可以生成表面纳米晶 (SNC) 层，从而使零件发生阶跃变化。不幸的是，由于难以控制喷丸工艺以提供均匀的 SNC，因此无法在商业上利用这种有益的“副产品”。此外，喷丸过程中的局部热量积聚会降低 SNC 层的形成速度，这意味着处理时间可能比传统喷丸过程长一个数量级，从而使该过程在商业上没有吸引力。 NanoPeen 项目旨在克服这一采用障碍，将通过测试使用该工艺处理的工业演示部件的改进性能来进行概念验证。