{"title":"Preparation of highly stable magnetic fluid and analysis of dynamic sealing characteristics of large-diameter eccentric shafts","authors":"Xiude Yi , Buhe Bateer , Feihu Zhang , Qiuyang Guo","doi":"10.1016/j.jmmm.2025.172893","DOIUrl":null,"url":null,"abstract":"<div><div>A highly stable magnetic fluid with high saturation magnetization is created, and a dynamic magnetic fluid sealing device for large shaft diameters is designed. This device features a sealing diameter of 380 mm and a sealing gap of 0.5 mm. The study evaluates the temperature rise rate, sealing capability, and long-term sealing performance under various conditions, including the magnetic fluid’s saturation magnetization, linear velocity, sealing gap, and pole tooth width. The structural parameters of the dynamic magnetic fluid seal device are optimized, resulting in a dynamic seal that can operate sustainably under conditions of a maximum shaft deflection of 0.25 mm, a maximum linear velocity of 23.8 m/s, and a sealing vacuum of 1300 Pa.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"619 ","pages":"Article 172893"},"PeriodicalIF":3.0000,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Magnetism and Magnetic Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304885325001246","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/19 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
A highly stable magnetic fluid with high saturation magnetization is created, and a dynamic magnetic fluid sealing device for large shaft diameters is designed. This device features a sealing diameter of 380 mm and a sealing gap of 0.5 mm. The study evaluates the temperature rise rate, sealing capability, and long-term sealing performance under various conditions, including the magnetic fluid’s saturation magnetization, linear velocity, sealing gap, and pole tooth width. The structural parameters of the dynamic magnetic fluid seal device are optimized, resulting in a dynamic seal that can operate sustainably under conditions of a maximum shaft deflection of 0.25 mm, a maximum linear velocity of 23.8 m/s, and a sealing vacuum of 1300 Pa.
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The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public.
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