AWS QC7 SUPP C-1993 Supplement C Welder Performance Qualification Sheet Metal Test Requirements.pdf

1、Supplement CWelderPerformanceQualificationSheet MetalTestRequirementsAWS QC7-93 Supplement CKey Words AWS Certified Welders, sheet AWS QC7-93, Supplement Cmetal welding, welders, weldercertification, welder qualificationWelder Performance QualificationSheet Metal Test RequirementsDeveloped byAWS Qua

2、lification and Certification CommitteeUnder the Direction ofAWS Education and Certification CouncilApproved byAWS Board of DirectorsApril 4, 1994AbstractThis Supplement C to AWS Standard QC7, Standardfor AWS Certified Welder Program, describes testing administratedby Accredited Test Facilities to th

3、e requirements of AWS QC4-89, Standard for Accreditation of Test Facilities for AWSCertified Welder Program. The welder performance testing for this Supplement was developed using ANSI/A WS D9.1,Sheet Metal Welding Code, as reference.American Welding Society550 N.W. LeJeune Road, Miami, Florida 3312

4、6Statement on Use of AWS StandardsAll standards (codes, specifications, recommended practices, methods, classifications, and guides) of the AmericanWelding Society are voluntary consensus standards that have been developed in accordance with the rules of theAmerican National Standards Institute. Whe

5、n AWS standards are either incorporated in, or made part of, documents thatare included in federal or state laws and regulations, or the regulations of other governmental bodies, their provisionscarry the full legal authority of the statute. In such cases, any changes in those AWS standards must be

6、approved by thegovernmental body having statutory jurisdiction before they can become a part of those laws and regulations. In allcases, these standards carry the full legal authority of the contract or other document that invokes the AWS standards.Where this contractual relationship exists, changes

7、 in or deviations from requirements of an AWS standard must be byagreement between the contracting parties.International Standard Book Number: 0-87171-445-0American Welding Society, 550 N.W. LeJeune Road, Miami, Florida 33126 1994 by American Welding Society. All rights reservedPrinted in the United

8、 Slates of AmericaNote: The primary purpose of AWS is to serve and benefit its members. To this end, AWS provides a forum for theexchange, consideration, and discussion of ideas and proposals that are relevant to the welding industry and theconsensus of which forms the basis for these standards. By

9、providing such a forum, AWS does not assume any duties towhich a user of these standards may be required to adhere. By publishing this standard, the American Welding Societydoes not insure anyone using the information it contains against any liability arising from that use. Publication of astandard

10、by the American Welding Society does not carry with it any right to make, use. or sell any patented items. Usersof the information in this standard should make an independent, subsiantiating investigation of the validity of thatinformation for their particular use and the patent status of any item r

11、eferred to herein.With regard to technical inquiries made concerning AWS standards, oral opinions on AWS standards may be rendered.However, such opinions represent only the personal opinions of the particular individuals giving them. These individu-als do not speak on behalf of AWS, nor do these ora

12、l opinions constitute official or unofficial opinions or interpretationsof AWS. In addition, oral opinions are informal and should not be used as a substitute for an official interpretation.This standard is subject to revision at any time by the AWS Qualification and Certification Committee. It must

13、 bereviewed every five years and if not revised, it must be either reapproved or withdrawn. Comments (recommendations,additions, or deletions) and any pertinent data that may be of use in improving this standard are requested and should beaddressed to AWS Headquarters. Such comments will receive car

14、eful consideration by the AWS Qualification andCertification Committee and the author of the comments will be informed of the Committees response to the comments.Guests are invited to attend all meetings of the AWS Qualification and Certification Committee to express theircomments verbally. Procedur

15、es for appeal of an adverse decision concerning all such comments are provided in theRules of Operation of the Qualification and Certification Committee. A copy of these Rules can be obtained from theAmerican Welding Society, 550 N.W. LeJeune Road, Miami, Florida 33126.PersonnelAWS Committee on Qual

16、ification and CertificationC. E. Pepper, Chairmanft. K. Wiswesser, 1st Vice ChairmanJ. F. Harris, 2nd Vice ChairmanL P. Connor, SecretaryE. M. Beck *W. F. BehnkeE. R. BohnartH. ChapmanH. F. Clark IIA.L Collin*P. R. EvansH. W. GoserW. L Green“J. E. GreerM. L Houle*W. H. KennedyR. E. LongS. P. MartinR

17、. D. MesserA. L PerroskiR. R. PicardS. L. RaymondT. Schlafly *S. W Scott*R. M. Simons*W. F. Urbick*R. F. WaiteF. G. DeLaurier, Ex-OfficioL G. Kvidahl. Ex-OfficioR. J. Dybas. Ex-OfficioJ. C. Papritan, Ex-Officio“AdvisorOak Ridge Nail LaboratoryWelder Training and Testing InstituteCenterior EnergyAmer

18、ican Welding SocietyLaw Engineering IncorporatedFord Motor Company/Sterling PlantMiller Electric Manufacturing CompanyConsultantFluor Daniel, IncorporatedConsulting EngineerB and therefore, should verifythat the qualification(s) apply to each employees work.C3.2.6 The use of these qualifications may

19、 requirethe approval of the Engineer or Owner. The employershall obtain such approval when required.C3.3 Qualification and Certification Department Re-sponsibilities. The Qualification and Certification De-partment shall complete the responsibilities defined inAWS QC7-93, 3.3.C3.4 Test Facility Resp

20、onsibilities. The Test Facilityis responsible for safety and health matters during testingat that location in addition to other requirements statedherein.C4. Provisions for TestingC4.1 Welding Procedure Specification (WPS). TheWPSs incorporated in this Supplement C shall be used toqualify welders to

21、 this standard, The WPSs in this sup-plement are for qualification of welders. Production weld-ing procedures shall be provided by employers inaccordance with AWS D9.1.C4.2 Test Facilities. The Test Facilities for this AWSWelder Certification program shall comply with the re-quirements of AWS QC7-93

22、, 4, Provisions for Testing.The Test Facility shall have been accredited according toAWS QC4. Standard for Accreditation of Test Facilitiesfor A WS Certified Welder Program.C5. Certification RequisitesCS.l Test ControlC5.1.1 Performance qualification test coupons shallbe welded in accordance with a

23、written WPS and thePerformance Test Description.C5.1.2 Performance Test Descriptions include weld-ing variables and define the limits of qualification foreach test.C5.2 Test SupervisorC5.2.1 Qualification testing shall be performed underthe direction of a person designated as the Test Super-visor in

24、 accordance with AWS QC4, Standard for Ac-creditation of Test Facilities for AWS Certified WelderProgram.C5.2.2 The Test Supervisor shall be responsible forthe performance qualification in accordance with thisSupplement C.C5.2.3 If during qualification testing, the Test Super-visor determines that t

25、he welder does not exhibit theskill to perform the test satisfactorily, the test may beterminated.C5.2.4 The Test Supervisor may allow a welder toretest immediately or may require additional training orpractice prior to retesting in accordance with C7, Retests.C5.2.5 The Test Supervisor shall be res

26、ponsible forenforcement of test shop safety rules, procedures, andcleanliness, as established by the Test Facility QA Manual.C5.3 Test Facility. The Test Facility conducts the quali-fication tests and prepares the test reports. The AmericanWelding Society issues the certification.C6. Performance Tes

27、tC6.1 Identification. The applicant shall be assigned anidentification letter, symbol or number, and this identifi-er shall be marked on the test materials and records.C6.2 Verification. Prior to the initiation of welding,the applicants photographic identification shall be veri-fied by the Test Supe

28、rvisor.C6.3 Safety Equipment. The applicant shall use per-sonal safety equipment applicable for the welding process.The safety requirements of the Accredited Test Facilityshall conform to the requirements of ANS1/ASC Z49.1.C6.4 Machine Adjustment. Before starting the quali-fication test, the welder

29、shall adjust the machine settingsto meet those of the WPS.C6.5 Material Check. The base material and filler metalidentifications shall be verified by the Test Supervisorprior to tack welding.C6.6 Fit-Up. The applicant shall assemble the specifiedtest assembly(ies) for welding in accordance with theW

30、PS. The test assembly shall be verified by the TestSupervisor. The Test Supervisor shall inspect each testassembly prior to welding in accordance with AWS D9,1.C6.7 Assembly Control. The Test Supervisor shall wit-ness the placing of each test assembly in the specifiedwelding position and shall mark

31、the test assembly, orsecure it, so that it remains in the specified position untilwelding has been completed.C6.8 Positioning. All cleaning, grinding, chipping ofslag or other in-process operations shall be performedwith the test assembly in the specified welding position.Evidence of removal of the

32、test assembly or movementfrom the original location, except by accidental means(subject to concurrence by the Test Supervisor), shall because for test termination.C6.9 Eye Correction. The Test Supervisor shall notethe use of and type of eye correction on the WelderQualification Test Record. The weld

33、ers certification cardshall also reflect eye correction use.C6.10 Power Tools. Any use, or lack of use, of powertools shall be noted on the Welding Qualification TestRecord by the Test Supervisor.C7. Examination Methods andAcceptance StandardsC7.1 All additional tests required by ANSI/AWS D9.1shall

34、be conducted under the supervision of the TestSupervisor.C12 Visual Examination. The test plates shall meetthe visual acceptance criteria for performance testing asdefined in ANSI/AWS D9.1. The visual examinationshall be performed by a current CWI without aid ofmagnification.C8. RetestsIf the welder

35、 performance test fails to meet the re-quirements a retest of each test failed may be allowedunder the following conditions:C8.1 Immediate Retest. No more then three immedi-ate retests shall be permitted. The retest specimens shallmeet all of the specified requirements.C8.2 Retest after Further Trai

36、ning or Practice. Aretest may be made, provided there is evidence that thewelder has had further training or practice. A completeretest of the types and positions failed shall be made.C9. Documentation of WelderPerformance QualificationThe performance qualification data and results of theexamination

37、 and testing shall be recorded on QC-WF1C.Records of applicants that meet the requirements shall beprocessed in accordance with AWS QC7-93.CIO. Period of EffectivenessC10.1 The period of certification is twelve months. Theperiod begins on the date of completion of the examina-tion results and signat

38、ure by the Test Supervisor. There-after, the certification shall be considered as remaining ineffect indefinitely unless:(1) the welder is not engaged in a given weldingprocess for which the welder is certified for a periodexceeding twelve months unless otherwise specified byANSI/AWS D9.1, or(2) the

39、re is some specific reason to question thewelders ability.C10.2 Indefinite certification in accordance with CIOmay be maintained by documenting the use of the weld-ing process in accordance with C12, Maintenance ofCertification.Cll. Identification/CertificationDocumentsThe welder certification card

40、is issued by AWS inaccordance with AWS QC7-93.C12. Maintenance of CertificationWelders may maintain their certification indefinitelyby verifying the use of the welding process(es). The useof the process(es) shall be verified by the welder submit-ting completed forms required in AWS QC7-93, 11,Mainte

41、nance and Certification each year as a minimum.Such forms shall be postmarked prior to the expiration ofcertification. The certification expiration date is extendedfor a period of 12 months, as defined in ANSI/AWSD9.1 from the date of the last use of the process(es), asdocumented on Form QC-WF3A, re

42、ceived and acceptedby the AWS Qualification and Certification Department.After the certification period has expired, without thewelder using the process, a single test need be made onlyin any thickness for each process in which the welder isqualified. Successful completion of such test restores allo

43、f the previous qualifications for the process tested.C13. Renewal of CertificationRenewal of certifications shall be in accordance withAWS QC7-93, 12, Renewal of Certification.C14. RevocationThe AWS Certification of a welder may be revoked inaccordance with the administrative procedures definedin AW

44、S QC7-93, 13, Revocation.WELDER AND WELDING OPERATOR PERFORMANCE QUALIFICATION TEST RECORDQualification Test PerformedName WPS NumberI.D. No. Base MetalDate of Test GaugeTest Position Square groove (butt joint)Shield gas used Code ANSI/AWS D9.1Eye correction used Yes No Performance Test Description

45、No.Power tools used Yes NoEssential Variables Qualified by TestType of base metal Welding processThickness Min Max Method of applicationManual SemiautomaticUncoated Sheet Yes No AutomaticCoating material on sheet Yes No Mode of transfer (GMAW) .Backing material Welding Current ac dcen ,_ deepFiller

46、metal specification Shield gas used .Filler Metal Classification Positions qualified Flat HorizontalVertical OverheadVisual Inspection ResultsCondition Acceptable UnacceptableComplete fusionComplete joint penetrationMaximum face and root reinforcement 1/8 in.No more than one visible pore per in. of

47、weldMaximum pore or inclusion size 0.251where t = base metai thicknessNo undercut exceeding 0.151 for t lessthan or equal to 0.187 in.No undercut exceeding 0.251 for t greaterthan 0.187 in.No cracksDate Tested Signed ByTest SupervisorTest Facility AWS CWI No.Test Facility No. Date SignedFormQC-WF1CC

48、-5MAINTENANCE OF CERTIFICATIONName I.D. #Enter date of last use of each of the following process(es):SMAW FCAW GTAW.GMAW SAW Other_CERTIFICATION IS EXTENDED FROM DATE INDICATED ABOVEEmployer/Test Supervisor/Customer (circle one) Verification: We certify that the above named welder used the pro-cesse

49、s on the dates indicated.Print Name TitleCompany Name PhoneSignature DateWE RECOMMEND SENDING “U.S. MAIL, RETURN RECEIPT REQUESTED.“Form QC-WF3AMaintenance of CertificationAWS QC7-93 Supplement CPerformance Test Description C-1GMAW 18 Gauge Coated SteelCode: ANSI/AWS D9.1Welding Process: Semiautomatic gas metal arc welding (GMAW) Transfer Mode: Short circuitingBase Material: ASTM A526 CQ G90 or A527 LFQ G90 Coating Type: GalvanizedMaterial Form: Sheet 3“ x 6“ Thickness: 18 GaugeFiller Metal: ANSI/AWS A5.18, Class ER-70S-X (F Number 6)Weld Joint Detail: Square butt, root opening