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Paper Abstract and Keywords
Presentation 2023-03-03 17:10
Effect of Lubricants on Electrical Characteristics of Sliding Contacts in Gold-plated Slip-ring System
Naoya Chiba, Takuma Matsuzaki, Koichiro Sawa, Takahiro Ueno (NIT) EMD2022-34
Abstract (in Japanese) (See Japanese page) 
(in English) An electric sliding contact mechanism is a means of transmitting power and signals between stationary and moving objects, and is used in various appliances such as chip mounters, ME devices and others. This sliding mechanism uses a slip ring and brush, but friction causes material wear and poor contact. Therefore, the use of lubricating oil in the slip ring system is aimed at reducing friction and wear, thereby extending the service life and improving reliability. However, there are still many unknowns about the degradation process of lubricant, which is a major factor in determining the life of the system.
In the previous papers, we have measured the contact voltage drop between the slip ring and the brush, and observed the change of the surface condition with time using Au-plated slip rings and Ag-Pd brushes during sliding.
In this research, We have developed a device for examining the sliding characteristics of Au-plated slip ring and AgPd brush, and investigated the effect of lubricants on their basic electrical sliding characteristics. As for the characteristics, the static characteristics of the contact voltage drop between ring and brush, the velocity dependence of the contact voltage drop, etc., and the contact voltage waveforms were also investigated. As a result, it can be made clear that contact voltage at high rotation speeds becomes higher for lubricants of high viscosity.
Keyword (in Japanese) (See Japanese page) 
(in English) slip ring / Au plating / Ag-Pd brush / wear / lubricating oil / degradation process / viscosity / rotation speed  
Reference Info. IEICE Tech. Rep., vol. 122, no. 416, EMD2022-34, pp. 76-81, March 2023.
Paper # EMD2022-34 
Date of Issue 2023-02-24 (EMD) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EMD2022-34

Conference Information
Committee EMD  
Conference Date 2023-03-03 - 2023-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) NIT and Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Short NOTE, etc. 
Paper Information
Registration To EMD 
Conference Code 2023-03-EMD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effect of Lubricants on Electrical Characteristics of Sliding Contacts in Gold-plated Slip-ring System 
Sub Title (in English)  
Keyword(1) slip ring  
Keyword(2) Au plating  
Keyword(3) Ag-Pd brush  
Keyword(4) wear  
Keyword(5) lubricating oil  
Keyword(6) degradation process  
Keyword(7) viscosity  
Keyword(8) rotation speed  
1st Author's Name Naoya Chiba  
1st Author's Affiliation Nippon Institute of Technology (NIT)
2nd Author's Name Takuma Matsuzaki  
2nd Author's Affiliation Nippon Institute of Technology (NIT)
3rd Author's Name Koichiro Sawa  
3rd Author's Affiliation Nippon Institute of Technology (NIT)
4th Author's Name Takahiro Ueno  
4th Author's Affiliation Nippon Institute of Technology (NIT)
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Speaker Author-1 
Date Time 2023-03-03 17:10:00 
Presentation Time 15 minutes 
Registration for EMD 
Paper # EMD2022-34 
Volume (vol) vol.122 
Number (no) no.416 
Page pp.76-81 
#Pages 6 
Date of Issue 2023-02-24 (EMD) 

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