Theelectrodewelding coreanddrug skinof two parts.TheelectrodeisoutsidethecoreofmetalWelding Electrode,coating (drug skin)uniformpressureapplied to theweldingcorecarefully.Different types ofelectrodewelding core.Ie,electrodeweldingcoremetal core,in order to ensurethe quality and performanceoftheweld, buttthecontentofmetalelementsinthecorethere are stringent regulations, especiallythecontentofharmfulimpurities(such assulfur, phosphorus,etc.),there should be strictrestrictions,better thantheparent metal.Welding corecomponentsdirectlyaffectthecomposition and performanceoftheweld metal,theharmful elementsinthewelding coretominimize thecoreofweldingcarbon steelandlowalloy steelweldinggenerally uselow-carbon steelweldingcore,and fill up themanganesesilicon, chromium, nickel,and other ingredients(seethewirenational standardGB130077).The one hand,low-carbonandlowcarbon contentsteel wireplastic,easier towiredrawing, on the other handcan reducethereducing gasCO concentration,reducespatteror porositycan beincreasedweld metalsolidificationtemperature,beneficial totheoverhead position welding.Addingotheralloying elementsin order to ensurethecomprehensivemechanical propertiesoftheweld,welding performanceandto remove impurities, but alsohave a certain effect.Otherhigh-alloy steel,aluminum,copper,iron and othermetalmaterials,thecompositionofthesoldercoreaddition to askingtheweldmetalare similar,thesameshould alsocontrolthecontentofimpurities,accordingtoprocess requirementsoften by addingcertainalloying elements.Theelectrodeiscoated with adrug skinforSMAWconsumable electrode, which isamedicatedskinandWelding Wirescorecomposedoftwo parts.Electrodefront-enddrug skinaroundthe45 °chamfer,in order to facilitatearc.Somebareweldingcoreinthetail,abouttheelectrodelength of1/16,to facilitatetheweldingclampholdandconductivity.ElectrodediameterChungactually refers tothesoldercorediameter)is usually2,2.5,3.2or3, 4, 5or 6mmseveralspecifications,itiscommon3.2,4,5itslength "L"is generallybetween250^-450mm.
Perpendicular to the external characteristics of power DC positive polarity (negative) wire connectedGenerally suitable for below 6mm sheet welding, weld appearance, Welding Electrode deformation characteristicsThe protective gas argon, a purity of 99.99%. When the welding current of 50 ~ 50A argon flow 8 ~ 0L/min, and when current 50 ~ 250A, argon flow rate of 2 ~ 5L/min.(4) tungsten inert gas nozzle prominent length, 4 ~ 5mm better, shelter in the fillet welds and other poor places is 2 ~ 3mm, slotted deep is 5 ~ 6mm nozzle to work distance is generally not more than 5mm.5 in order to prevent welding stomatal welding parts subject to rust, oil, etc. to be cleaned up.The welding arc length, welding ordinary steel, 2 ~ 4mm is better, welded stainless steel, to ~ 3mm is better, too long the protection ineffective.7 docking base, in order to prevent the back of the bottom of the weld from oxidation, and the back of the need to implement the gas protection.Argon to protect the weld pool, and to facilitate the Welding Wireoperation, the tungsten centerline weld workpiece generally should be kept 80 to 85 ° angle, filler wire and the workpiece surface angle should be as small as possible. is generally about 0 °.9 wind and ventilation. The wind, you take the backstop measures, appropriate ventilation measures should be taken indoors.