Liccoln WPHB - Section 02 (Designing for Arc Welding)

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1、Section2DESIGNINGFORARCWELDINGSECTION2.1PotentialSourcesofTrouble...........2.1-32ImproperSpecifications..............2.1-32THESYSTEMSAPPROACHTOMixingofWeldTypes...............2.1-33WELDEDDESIGNPageMisuseofDiagnosticTools...........2.1-33TheTendencytoOverweld...........2

2、.1-33Introduction.........................2.1-1FailuretoSeetheWholePicture......2.1-34GeneralConsiderations................2.1-1TheSpecificationofIntermittentWelds.2.1-34AnalysisofPresentDesign...........2.1-1OverworkedMembers................2.1-35DeterminationofLoadCond

3、itions.....2.1-2BuildinginStressRaisers............2.1-35MajorDesignFactors................2.1-2InefficientTransferofForces.........2.1-36Layout...........................2.1-2DirectionalChangeofForces..........2.1-36PlatePreparation...................2.1-3Propagatingthe

4、Cover-UpforanError.2.1-37FormingandSpecialSections.........2.1-3IncorrectIdentificationoftheProblem..2.1-37WeldedJointDesign................2.1-3ReinforcementstoPreventFatigueSizeandAmountofWeld............2.1-3Cracking........................2.1-38Subassemblies.........

5、.............2.1-4AnticipatingTrouble................2.1-39Jigs,FixturesandPositioners.........2.1-4ManufacturingTolerances............2.1-39Assembly..........................2.1-4GuidestoFabrication.................2.1-39WeldingProcedures.................2.1-4WaystoUseM

6、aterialEfficiently......2.1-39DistortionControl..................2.1-5JigsandFixtures...................2.1-43CleaningandInspection..............2.1-5Forming..........................2.1-43WhattheDesignerNeedstoKnow......2.1-5TheAdvantagesofSubassemblies......2.1-43TheDe

7、signApproach-PartorSuggestedReading..................2.1-44Whole?.........................2.1-6SelectingaBasisforWeldedDesign....2.1-6SECTION2.2DesigningforStrengthandRigidity......2.1-6THEDESIGNOFWELDEDJOINTSDesignFormulas....................2.1-7Loading................

8、...........2.1-8Fillet-WeldedJoints...................2.2-1TensionLoading..................2.1-8Groovea