陶切割工具的基于磁动力学的内部冷却系统:概念设计,数值研究和实验性除
John O'Hara1, Fengzhou Fang1,2
1Center of Micro/Nano Manufacturing Technology (MNMT-Dublin), University College Dublin, Dublin 4, Ireland.
概括
这项研究引入了液体作为切割插件的优质内部冷却剂,与传统方法相比,可显著降低高达36%的工具磨损. 磁性水力动力 (MHD) 消除了对外部电源的需求,提高了高速加工的效率.
科学领域:
- 材料科学与工程 材料科学与工程
- 机械工程 机械工程
- 制造业 制造技术 制造技术
背景情况:
- 在机械切割中,有效的散热对于工具寿命和工件质量至关重要.
- 目前使用水基冷却剂的内部冷却系统由于水的低导热率和依赖外部电源进行循环而存在局限性.
- 需要先进的冷却解决方案来提高效率并减少在苛刻的加工操作中磨损的工具.
研究的目的:
- 建议和评估液体作为切割插件的替代内部冷却剂.
- 为了研究磁性水力动力 (MHD) 用于循环液体的使用,消除了对外部电源的需求.
- 在工具磨损率方面,比较液体冷却与非冷却和传统的基于水的外部冷却方法的有效性.
主要方法:
- 使用计算流体动力学 (CFD) 开发内部冷却系统的数值模型.
- 对冷却系统进行模拟,将磁场应用于液体.
- 实验验证比较非冷却,液体 (MHD-pumped) 和各种切割速度的外部液体水冷却条件下的刀具磨损率.
主要成果:
- 与没有冷却剂相比,使用MHD冷却液体可以在250 m/min时减少36%的角落磨损,在900 m/min时减少31%.
- 内部液体冷却显示了比外部液体水冷却在250米/分钟的29%更大的工具磨损减少.
- 在900 m/min的速度下,内部液体冷却与外部液体水冷却相比,减少了16%的工具磨损.
结论:
- 液体,当通过MHD循环时,是切割插件内部冷却通道的可行和有效的冷却剂.
- 这种新的方法显著提高了工具的寿命,并降低了磨损率,特别是在更高的切割速度.
- 由MHD驱动的液体系统为传统冷却方法提供了有前途的替代方案,提高了加工效率和工件质量.
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