1、Qualification Standard forWelding,Brazing,and FusingProcedures;Welders;Brazers;and Welding,Brazing,andFusing OperatorsSECTION IXWelding,Brazing,and Fusing QualificationsASME BPVC.IX-20212021ASME Boiler andPressure Vessel CodeAn International CodeMarkings such as“ASME,”“ASME Standard,”or any other ma
2、rking including“ASME,”ASME logos,or the ASME Single Cerficaon Mark shall not be used on any item that is not constructed in accordance with all of the applicable requirements of the Code or Standard.Use of of the ASME Single Cerficaon Mark requires formal ASME cerficaon;if no cerficaon program is av
3、ailable,such ASME markings may not be used.(For Cerficaon and Accreditaon Programs,see hps:/www.asme.org/cerficaon-accreditaon.)Items produced by pares not formally possessing an ASME Cerficate may not be described,either explicitly or implicitly,as ASME cerfied or approved in any code forms or othe
4、r document.IXQUALIFICATION STANDARDFOR WELDING,BRAZING,ANDFUSING PROCEDURES;WELDERS;BRAZERS;ANDWELDING,BRAZING,ANDFUSING OPERATORSASME Boiler and Pressure Vessel Committeeon Welding,Brazing,and FusingAN INTERNATIONAL CODE2021 ASME Boiler&Pressure Vessel Code2021 EditionJuly 1,2021Two Park Avenue New
5、 York,NY 10016 USADate of Issuance:July 1,2021This international code or standard was developed under procedures accredited as meeting the criteria forAmerican National Standards and it is an American National Standard.The Standards Committee that approvedthe code or standard was balanced to assure
6、that individuals from competent and concerned interests havehad an opportunity to participate.The proposed code or standard was made available for public review and com-ment that provides an opportunity for additional public input from industry,academia,regulatory agencies,andthe public-at-large.ASM
7、E does not“approve,certify,“rate,”or“endorse”any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document,and does not undertake to insure anyone utilizing a stan
8、dard against liabilityfor infringement of any applicable letters patent,nor assume any such liability.Users of a code or standard areexpressly advised that determination of the validity of any such patent rights,and the risk of infringement of suchrights,is entirely their own responsibility.Particip
9、ation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the es-tablished ASME procedures
10、and policies,which precludes the issuance of interpretations by individuals.The endnotes and preamble in this document(if any)are part of this American National Standard.ASME Collective Membership MarkASME Single Certification MarkASME and the above ASME symbols are registered trademarks of The Amer
11、ican Society of Mechanical Engineers.No part of this document may be reproduced in any form,in an electronicretrieval system or otherwise,without the prior written permission of thepublisher.Library of Congress Catalog Card Number:56-3934Printed in the United States of AmericaAdopted by the Council
12、of The American Society of Mechanical Engineers,1914;latest edition 2021.The American Society of Mechanical EngineersTwo Park Avenue,New York,NY 10016-5990Copyright 2021 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedTABLE OF CONTENTSList of Sections.xForeword.xiiStatement of Polic
13、y on the Use of the ASME Single Certification Mark and Code Authorization in AdvertisingxivStatement of Policy on the Use of ASME Marking to Identify Manufactured Items.xivSubmittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees.xvPersonnel.xviiiIntroduction.xxxixSumma
14、ry of Changes.xliiList of Changes in Record Number Order.xlviiCross-Referencing and Stylistic Changes in the Boiler and Pressure Vessel Code.xlviiiPart QGGeneral Requirements.1QG-100Scope.1QG-109Definitions.5Part QWWelding.15Article IWelding General Requirements.15QW-100Scope.15QW-110Weld Orientatio
15、n.15QW-120Test Positions for Groove Welds.15QW-130Test Positions for Fillet Welds.16QW-140Types and Purposes of Tests and Examinations.17QW-150Tension Tests.17QW-160GuidedBend Tests.18QW-170Toughness Tests.19QW-180FilletWeld Tests.19QW-190Other Tests and Examinations.21Article IIWelding Procedure Qu
16、alifications.29QW-200General.29QW-210Preparation of Test Coupon.32QW-220Hybrid Welding Procedure Variables.35QW-250Welding Variables.35QW-290Temper Bead Welding.68Article IIIWelding Performance Qualifications.72QW-300General.72QW-310Qualification Test Coupons.74QW-320Retests and Renewal of Qualification.75QW-350Welding Variables for Welders.76QW-360Welding Variables for Welding Operators.77QW-380Special Processes.78Article IVWelding Data.81QW-400Variables.81QW-410Technique.91QW-420P-Numbers.96QW