_STP_491-1971.pdf

HYDRAULIC SYSTEM CLEANLINESS A symposium presented at the Seventy-third Annual Meeting AMERICAN SOCIETY FOR TESTING AND MATERIALS Toronto,Ont.,Canada,21-26 June 1970 ASTM SPECIAL TECHNICAL PUBLICATION 491#List price$4.50 04-491000-12 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race Street,Philadelphia,Pa.19103 Copyright by ASTM Intl(all rights reserved);Fri Jan 1 22:59:37 EST 2016Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.BY AMERICAN SOCIETY FOR TESTING AND MATERIALS 1971 Library of Congress Catalog Card Number:70-151113 ISBN O-8031-0125-6 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in Baltimore,Md.June 1971 Copyright by ASTM Intl(all rights reserved);Fri Jan 1 22:59:37 EST 2016Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Foreword The Symposium on Hydraulic System Cleanliness was given at the Seventy-third Annual Meeting of the American Society for Testing and Materials held in Toronto,Ont.,Canada,21-26 June 1970.The symposium was sponsored by Committee D-2 on Petroleum Products and Lubricants.J.J.Weaver,Shell Oil Company,presided as symposium chairman.Copyright by ASTM Intl(all rights reserved);Fri Jan 1 22:59:37 EST 2016Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Related ASTM Publications Significance of ASTM Tests for Petroleum Products,STP 7-B(1957),$3.50 Copyright by ASTM Intl(all rights reserved);Fri Jan 1 22:59:37 EST 2016Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Contents Introduction 1 Hydraulic Oil Cleanliness:A Key to N/C Machine Maintenanceo.H.ARNDT 3 Maintenance of Cleanliness of Hydraulic Fluids and SystemsL.B.BARA-NOWSKI 18 Fluid Conditioning for Servo Systemsj.N.CORONEOS 29 Improve System Contamination Control and Increase System Efficiency J.p.DUNCAN 34 Requirements for an Effective Program in Fluid Contamination Control E.C.FITCH,JR.39 Contribution of Hydraulic Fluids to System ContaminationE.A.KIRNBAUER 50 Status Report on the Tech O/F-7 Contamination Methods ProgramD.A.MARLOW AND A.BEERBOWER 69 FilteringFrom the Moon to the Minesw.j.MARSH 78 Copyright by ASTM Intl(all rights reserved);Fri Jan 1 22:59:37 EST 2016Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.STP491-EB/Jun.1971 Introduction Experience in the hydraulic industry indicates that there is a need for test methods to deal with problems caused by dirt in hydraulic systems.Representatives of industry have asked Technical Division N to consider the possibility of developing applicable test methods.To achieve a better understanding and definition of the problems,we have organized our sym-posium to discuss the various aspects of industrial hydrauHc system clean-liness.We planned the symposium to include contributions from a wide range of interested parties.Our authors represent users of hydraulic systems,equipment manufacturers,filter manufacturers,technical societies,and educa-tional institutions.We beheve that the authors have done an excellent job for us.Their papers show the benefits and problems associated with hydraulic system cleanliness and demonstrate the need for test methods to evaluate filters and measure contamination.It is hoped that Technical Division N will undertake the development of these test methods.Our symposium and the following list of D-2 Committee,ASTM Standards are suggested as guides for such an under-taking.ASTM Standards Relating to System Cleanliness Sampling D 2388 Field Sampling of Aerospace Fluids in Containers D 2407 Sampling Airborne Particulate Contamination in Clean Rooms for Handling Aerospace Fluids D 2429 Sampling Aerospace Fluids from Components D 2437 Open-Bottle Tap Sampling of Noncryogenic Fluid Systems D 2535 Samphng for Particulates from Aerospace Components with Convolutes D 2536 Sampling Particulates from Reservoir Type Pressure-Sensing Instruments by Fluid Flushing D 2537 Sampling Particulates from Storage Vessels for Aerospace Fluids by Vacuum Entrainment Techniques(General Method)D 2542 Liquid Sampling of Noncryogenic Aerospace Propellants Sample Processing D 2391 Processing Aerospace Liquid Samples for Particulate Contamina-tion Analysis Using Membrane Filters 1 Copyright*1971 by ASTM International www.astm.org Copyright by ASTM Intl(all rights reserved);Fri Jan 1 22:59:37 EST 2016Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.2 HYDRAULIC SYSTEM CLEANLINESS Tests for Contamination D 893 Test for Insolubles in Used Lubricating Oils D 1404 Estimation of Deleterious Par