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A study on the flow sturcture and cutting performance of submerged abrasive water jet

水下磨料水射流流动结构及切割性能研究

基本信息

批准号：
18F18778
负责人：
彭國義
金额：
$ 0.64万
依托单位：
Nihon University
依托单位国家：
日本
项目类别：
Grant-in-Aid for JSPS Fellows
财政年份：
2018
资助国家：
日本
起止时间：
2018-11-09 至 2020-03-31
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18F18778/
关键词：
Water Jet Processing Topography Abrasive suspention jet Ventilation Cavitation Abrasive water jet Submerged cutting Flow visualization Image analysis

项目摘要

Abrasive suspension water jet (ASJ) technology is characterized in efficient acceleration of particles compared to abrasive injection jet (AIJ). Concerned on the performance of ASJ, the relation of machining property of abrasive water suspension jet was clarified in this work with an emphasis on the surface treatment related to the jet flow structure, working conditions and cutting parameters.The main output of this research is the deepening of knowledge and practical experience in the field of high-speed water jets. International cooperation between the Nihon University and Institute of Geonics of the Czech Academy of Sciences has been established in the frame of practical research activities.The practical part was that extensive experiments were carried out at the Nihon University in Koriyama. Machined samples were measured on the digital microscope Keyence VHX-6000. Measurement of the topography of all examined samples was performed on a Micro Professional FRT optical profilometer. Research of the topography of the surface created by the various types of water jets provides information on the formation of the jet and its efficiency in underwater cutting. This data obtained is useful to optimize ASJ technology to produce the required surface topography of various materials. In particular, it is a search for a connection between the selected technological parameters and the topography of the resulting surface.

磨料悬浮水射流（ASJ）技术与磨料喷射射流（AIJ）相比，具有有效加速颗粒的特点。针对ASJ的性能，阐明了磨料水悬浮射流加工性能的关系，重点讨论了与射流结构、工作条件和切削参数相关的表面处理。本研究的主要成果是加深了高速水射流领域的知识和实践经验。日本大学和捷克科学院地球研究所之间的国际合作是在实际研究活动的框架内建立起来的。实际的部分是在郡山的日本大学进行了大量的实验。加工后的样品在Keyence VHX-6000数码显微镜上测量。在Micro Professional FRT光学轮廓仪上对所有检测样品的形貌进行测量。对各种类型的水射流形成的表面形貌的研究提供了关于射流形成及其水下切割效率的信息。所得数据可用于优化ASJ技术，以生产各种材料所需的表面形貌。特别地，它是在所选的工艺参数和所得到的表面的地形之间寻找联系。