AGMA-938-A05-2005.pdf
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1、AGMA INFORMATION SHEET (This Information Sheet is NOT an AGMA Standard) AGMA 938-A05 AGMA 938-A05 AMERICAN GEAR MANUFACTURERS ASSOCIATION Shot Peening of Gears Copyright American Gear Manufacturers Association Provided by IHS under license with AGMA Licensee=IHS Employees/1111111001, User=Wing, Bern
2、ie Not for Resale, 04/18/2007 10:58:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ii Shot Peening of Gears AGMA 938-A05 CAUTION NOTICE: AGMA technical publications are subject to constant improvement, revision or withdrawal as dictated by experience. Any person who ref
3、ers to any AGMA technicalpublicationshouldbesurethatthepublicationisthelatestavailablefromtheAs- sociation on the subject matter. Tables or other self-supporting sections may be referenced. Citations shouldread: See AGMA938-A05,ShotPeeningofGears,publishedbytheAmericanGearManufacturers Association,5
4、00MontgomeryStreet,Suite350,Alexandria,Virginia22314, http:/www.agma.org. Approved May 3, 2005 ABSTRACT This informationsheetprovides atoolforgeardesigners interested inthe residualcompressive stress proper- ties produced by shot peening and its relationship to gearing. It also discusses shot media
5、materials, delivery methods, and process controls. Published by American Gear Manufacturers Association 500 Montgomery Street, Suite 350, Alexandria, Virginia 22314 Copyright 2005 by American Gear Manufacturers Association All rights reserved. No part of this publication may be reproduced in any for
6、m, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America ISBN: 1-55589-847-5 American Gear Manufacturers Association Copyright American Gear Manufacturers Association Provided by IHS under license with AGMA Licensee
7、=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 10:58:58 MDTNo reproduction or networking permitted without license from IHS -,-,- AGMA 938- -A05AMERICAN GEAR MANUFACTURERS ASSOCIATION iii AGMA 2005 - All rights reserved Contents Page Forewordiv. . . . . . . . . . . . . . . .
8、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Scope1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Normative references1. . . . . . . . . . . . . . . . . . . . . . . . . . .
9、. . . . . . . . . . . . . . . . . . . . 3Theory of shot peening1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Effects of shot peening2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Shot delivery methods5. .
10、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Shot media6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Shot peening process controls6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
11、 . . . . . . . . . . . . 8Recommendations for specifying shot peening parameters10. . . . . . . . . . . . . . Bibliography14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Annexes AGraphs and figures expressed in U.S. customary un
12、its12. . . . . . . . . . . . . . . . . . Figures 1Bending fatigue improvements from shot peening2. . . . . . . . . . . . . . . . . . . . . . . 2Typical residual stress curve from shot peening3. . . . . . . . . . . . . . . . . . . . . . . . . 3Approximate depth of compressive layer in steel versus Al
13、men intensity4. . . . 4Extrapolation of depth of shot peened compressive layer when surface has residual compressive stress prior to shot peening4. . . . . . . . . . . . . . . . . . . 5Relative changes from various shot peening intensities using the same shot size5. . . . . . . . . . . . . . . . . .
14、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Spiral separator for removing broken shot media7. . . . . . . . . . . . . . . . . . . . . . . . 7Shot intensity measurement using Almen strip8. . . . . . . . . . . . . . . . . . . . . . . . . . 8Comparable intensity
15、values between N, A, and C scales8. . . . . . . . . . . . . . . . 9Examples of Almen block mounting on an actual gear part and on a representative geometry9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Saturation curve9. . . . . . . . . . . . . . . . . .
16、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tables 1Shot size versus intensity range5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Copyright American Gear Manufacturers Association Provided by IHS under license with AGMA Licensee=IHS Employees/1
17、111111001, User=Wing, Bernie Not for Resale, 04/18/2007 10:58:58 MDTNo reproduction or networking permitted without license from IHS -,-,- AGMA 938- -A05AMERICAN GEAR MANUFACTURERS ASSOCIATION iv AGMA 2005 - All rights reserved Foreword The foreword, footnotes and annexes, if any, in this document a
18、re provided for informational purposes only and are not to be construed as a part of AGMA Information Sheet 938-A05, Shot Peening of Gears. Thepurposeofthis informationsheetis toprovideacentralizedreferencefor shotpeening information for other AGMA documents.Previously, multiple AGMA documents had v
19、arying descriptions of the shot peening process.This information sheet provides a thorough process description to assist the gear designer in understanding and implementing the shot peening process. ThefirstdraftofAGMA938-A05wasmadeinAugust2003. Itwas approvedby theAGMA Technical Division Executive
20、Committee in May 2005. Suggestionsforimprovementofthisdocumentwillbewelcome. Theyshouldbesenttothe AmericanGearManufacturersAssociation,500MontgomeryStreet,Suite350,Alexandria, Virginia 22314. Copyright American Gear Manufacturers Association Provided by IHS under license with AGMA Licensee=IHS Empl
21、oyees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 10:58:58 MDTNo reproduction or networking permitted without license from IHS -,-,- AGMA 938- -A05AMERICAN GEAR MANUFACTURERS ASSOCIATION v AGMA 2005 - All rights reserved PERSONNEL of the AGMA Metallurgy and Materials Committee Chairman:
22、 Phil TerryLufkin Industries, Inc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vice Chairman: Dale J. WeiresBoeing Defense therefore, this docu- ment is classified as an information sheet and not a standard. This document intentionally avoids any reference to quantifying potential i
23、ncreases in gear ratings throughtheuseofshotpeening. Any ratings increaseattributedtoshotpeeningshouldbeagreed upon between the gear manufacturer and purchas- er, and preferably verified through testing. This document is intended for use by those experi- encedingearmaterialsanddesign. Itisnotintende
24、d for use by the engineering public at large. Annex A provides figures and tables in U.S. customary units. 2 Normative references The following documents contain provisions which, throughreferenceinthistext,constituteprovisionsof this informationsheet. Atthetimeofpublication,the editions were valid.
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