ASME_B205-1978.pdf

W 9009275 0024b7b 972 E q7-/!i A N A M E R I C A N N A T I O N A L S T A N D A R D FERROUS PISTON RINGS(8 to 40 inches Diameter)ANSI/ASME B205-1978 SPONSORED AND PUBLISHED BY T H E A M E R I C A N S O C I E T Y O F M E C H A N I C A L E N G I N E E R S United Engineering Center New York,N.Y.1 O01 7 345 East 47th Street Copyright ASME International Provided by IHS under license with ASME Licensee=University of Alberta/5966844001,User=trert,rtyrtyrtyNot for Resale,03/08/2015 08:43:58 MDTNo reproduction or networking permitted without license from IHS-,-,-9009275 O024677 809 Date of Issuance:February 28,1979 No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the pu biisher.Copyright 0 1979 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A.i r Copyright ASME International Provided by IHS under license with ASME Licensee=University of Alberta/5966844001,User=trert,rtyrtyrtyNot for Resale,03/08/2015 08:43:58 MDTNo reproduction or networking permitted without license from IHS-,-,-9009275 0024678 745 FOREWORD At a meeting held in Chicago on October 31,1951 between the ring manufacturers and the engineers of the Diesel engine manufacturers,it was brought out that the lack of standards on rings above the SAE diameter limit had resulted in much confusion and increased costs due to tooling and special Set-up,as well as lack of interchangeability.It was recommended that a committee be organized to draw up ring standards for the diameter range above 8 inches,which would serve a ring guide for future engine designs.There was no thought to use these standards for present engines or service replacements as this would be an impossible accomplishment unless incorporated when piston replacements were made.A committee was organized of the ring manufacturers and a second meeting was held in Detroit on January 15,1952.At this meeting proposed standards for ring specifications were approved by all members of the committee.Since this range of ring sizes is beyond the scope covered by the SAE,and since the Diesel field is well covered by the Diesel and Gas Engine Division of the ASME,it was requested that those rings be made an ASME standard.A draft of the proposed standard received the approval of the Society and was designated an ASME standard on September 2,1954.This standard served the industry well.How-ever,as technology in the ring area progressed the need to expand the standard was recognized.At a meeting of the ASME Standards Committee on Piston Rings on September 20,1977 a revised draft was developed.Recognizing the anticipated changeover to SI units,this standard has been developed to fall within this environment.This draft received the approval of the Standards Committee and was approved as an American National Standard by the American National Standards Institute on October 4,1978.iii Copyright ASME International Provided by IHS under license with ASME Licensee=University of Alberta/5966844001,User=trert,rtyrtyrtyNot for Resale,03/08/2015 08:43:58 MDTNo reproduction or networking permitted without license from IHS-,-,-9009275 0024677 bL PERSONNEL OF ASME COMMITTEE ON FERROUS PISTON RINGS(8 TO 40 INCHES DIAMETER)(The following is the roster of the Committee at the time of the approval of t h i s Standard)Kent W.Thurson,Chairman John R.Kennedy,Vice-CY?ainnan Richard W.Mcinnis,Secretary STANDARDS COMMITTEE K.W.Thurston,Koppers Company Incorporated,Piston Rings and Seals,Baltimore,Maryland H.G.Braendel,Power Systems Engineering,Malvem,Pennsylvania H.W.Engelman,Ohio State University,Department of Mechanical Engineering,Columbus,Ohio J.R.Kennedy,Cooper-Bessemer Company,Mount Vernon,Ohio .K.Klein,Dover Corporation,C Lee Cook Division,Louisville,Kentucky M.H.Lowrey,DeLaval Turbine Corporation,Engine and Compresser Division,Oakland,California A.E.Swartz,Muskegon Piston Ring Company,Muskegon,Michigan E F.Thomas,Double Seal Ring Company,Fort Worth,Texas C.F.Wilke,Dresser Industries,Dresser Clark Division,Olean,New York V Copyright ASME International Provided by IHS under license with ASME Licensee=University of Alberta/5966844001,User=trert,rtyrtyrtyNot for Resale,03/08/2015 08:43:58 MDTNo reproduction or networking permitted without license from IHS-,-,-m 9009275 0024680 3T3 CONTENTS Page Foreword Standards Committee Roster 1.Scope.1 2.DefinitionofTerms.1 4.CylinderDiameter.6 5.RingWidth 8 6.RingW all.8 7.Groove Depth.8 8.RingEndclearance.8 9.PistonRingTension.8 11.Dowel Pin Holes.10 12.Conformable Type O i l Rings.11 13.Identification Marking.11 3.Materials.5.10.Ringshape 9.TABLES Table 1 Cylinder Diameter Increments.6 Table 2 Cylinder Diameter Tolerances.6 Table3 Ringwidths.6 Table 4 Typical Minimum Side Clearance.7 Table 5 Recommended Maximum W a i l .7 Table 6 Suggested Wail Tolerance.8 Table 7 Suggested Minimum Back Clearance.8 Table 8 Minimum End Clearance.8 Table 9 End Clearance Tolerance.8 Table 10