ARC WELDING

May 15th, 2015
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What is Arc Welding? An electric arc between the and electrode and the work piece generates heat. Sufficient heat is generated to melt the work pieces together. ELECTRODE ARC WORK PIECES

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Arc WeldingARC WELDINGME 353 Presentation 11-3-2000 Presented by Damon OgdenOUTLINE What is Arc Welding The four most common types Non destructive testing Design considerations Strength Safety Feel free to ask questions at any questions at any time.Arc Welding Welcome to the world of WELDINGWhat is Arc Welding?An electric arc between the and electrode and the work piece generates heat. Sufficient heat is generated to melt the work pieces together. ELECTRODE ARC WORK PIECESElectricityThe range of welding current used can be from 5 to 500 amps. The voltage ranges from 20 to 30 volts, AC or DC. Both are determined by the material thickness. A 60 watt light bulb draws .5 amps.Four Common Types of WeldingStick SMAW (shielded metal arc welding) Mig GMAW (Gas Metal Arc Welding) Flux-Core FCAW (Flux-core Arc Welding) Tig GTAW (Gas Tungsten Arc Welding)CharacteristicsEach welding process has unique traits that make it more suited for particular processesSome TermsElectrode This is where the current passes from the welder to the work piece. There are two types: 1) Contact/consumable 2) Non ContactMore TermsAtmospheric protection There are 2 types: 1) Shielding Gas 2) FluxStick Weld SchematicCurrentStick Welding Uses a consumable electrode (rod), with a flux coating. Stick welding requires a moderate to high skill level. Advantages: Portable Can be used in all environments Not as dependent on

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