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.

喷丸强化是一种通过在零件表面施加压应力来提高疲劳寿命的方法。然而，多年来人们已经知道，喷丸强化也可以产生表面纳米晶（SNC）层，这可以使零件性能发生阶级性变化，包括增加耐磨性和耐腐蚀性，以及抗菌性能。不幸的是，由于难以控制喷丸强化过程以获得均匀的SNC层，因此不可能对这种有益的“副产品”进行商业开发。此外，喷丸强化过程中的局部热积聚降低了SNC层形成的速度，这意味着加工时间可能比传统的喷丸强化长一个数量级，从而使该工艺在商业上没有吸引力。NanoPeen项目试图克服这一障碍。概念验证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演示。