Title :
Application of a hydrophilic Fe-Co magnetic fluid to the oil seal of a rotary shaft
Author :
Kim, Young Sam ; Lee, Jong Heon
Author_Institution :
Dong-A Univ., Pusan, South Korea
Abstract :
This seal is composed of magnetic fluid to stop up oil in seals. As a magnetic fluid between a shaft and oil seal stops up oil in seals during shaft rotation, there is friction, but abrasion free, between the shaft and oil seal so that there is no problem with durability limits. In this study, with Fe-Co magnetic fluid, a hydrophilic ethylene glycol medium, Fe-Co (30%: Co) powder, a ring structure Nd-permanent magnet of magnetic field strength 3300 Gauss and pole-piece (thickness: 1 mm, mild steel plate) are used. With this arrangement, the performance is such that the maximum resisting pressure of the oil seal apparatus was measured to be 25 kg/cm2 at a shaft speed of 1800 RPM. It is believed that this magnetic fluid of Fe-Co powder used in oil seal apparatus has the largest saturation magnetization among magnetic fluids in use to date
Keywords :
cobalt alloys; iron alloys; lubrication; magnetic fluids; magnetisation; permanent magnets; powder metallurgy; seals (stoppers); 1 mm; 3300 gauss; Fe-Co; Fe-Co powder; hydrophilic Fe-Co magnetic fluid; hydrophilic ethylene glycol medium; mild steel pole-piece; resisting pressure; ring structure Nd-permanent magnet; rotary shaft oil seal; saturation magnetization; Anti-freeze; Friction; Gaussian processes; Magnetic field measurement; Magnetic liquids; Petroleum; Powders; Saturation magnetization; Seals; Shafts;
Conference_Titel :
Industrial Electronics, 2001. Proceedings. ISIE 2001. IEEE International Symposium on
Conference_Location :
Pusan
Print_ISBN :
0-7803-7090-2
DOI :
10.1109/ISIE.2001.931850
