I-Corps: Delivery of coherent coolant jet and nozzle manufacturing for grinding technology

I-Corps项目更广泛的影响/商业潜力是可能开发一种方法，以减少油基冷却剂的扩散和油雾的形成，这种油雾通过吸入或作为火灾危险构成安全危险。这项拟议的技术可能会产生一种可调整的、多样化的冷却方法，用于研磨行业。这项技术可能会对经历内径磨削的行业感兴趣，在内径磨削中，材料从零件上移除以完成其内表面。喷嘴的制造、调节器的设计(用于减少冷却液中的湍流的装置)和喷射扩散之间的联系对于包括成形和切割技术在内的其他材料加工技术是重要的。高效的冷却可以减少对环境的热污染，这在磨削工业中是非常重要的。这个I-Corps项目是基于冷却剂射流的多尺度多相流体动力学计算模型的开发，以及包括喷嘴和长相干射流调节器在内的硬件的潜在生产。该技术通过优化喷嘴和调节器的设置以适应不同的磨削情况，从而能够预测凝聚射流的解体并提高冷却效率。如果在磨削过程中过热处理不当，可能会发生热损伤，包括拉伸残余应力、变色、软化、再硬化和裂纹。建议的技术可以使喷嘴直接接近研磨情况，通过建议的技术对喷嘴相干性的评估也可以帮助预测喷嘴的更换需求，可以使用3D打印及时制造喷嘴。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

The broader impact/commercial potential of this I-Corps project is the potential development of a methodology that could mitigate the spread of oil-based coolant and the formation of oil mist that represents a safety hazard through inhalation or as a fire hazard. The proposed technology may produce an adjustable and varied methodology for cooling for use in the grinding industry. The technology may be of interest to industries that experience inner diameter grinding, where the material is removed from a part to finish its inner surface. The link between the manufacturing of the nozzle, design of conditioner (device for reduction of turbulence within coolant liquid), and jet spread is important for other material processing technologies including forming and cutting technologies. The efficient cooling could reduce heat pollution of the environment, which is substantial in the grinding industry.This I-Corps project is based on the development of a multi-scale and multi-phase fluid dynamics computational model of coolant jet and the potential production of hardware including a nozzle and conditioner for a long coherent jet. The proposed technology may be able to predict the disintegration of a coherent jet and improve the cooling efficiency by optimizing nozzle and conditioner settings for varying grinding situations. If overheating is not managed properly during grinding, thermal damage may occur including tensile residual stresses, discoloration, softening, re-hardening, and cracks. The proposed technology could place the nozzle in direct proximity to grinding situations, and the evaluation of jet coherence by the proposed technology could also assist in the prediction of the need for replacement of the nozzle, which can be timely manufactured using 3D printing.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.