Hobart Welding Products OM-949 manual Electrode Movement During Welding, Butt Joints

Page 27

7-7. Electrode Movement During Welding

1 Stringer Bead − Steady Move-

		ment Along Seam
		2 Weave Bead − Side To Side
1	2	Movement Along Seam
1	2	3 Weave Patterns
		3 Weave Patterns
		Use weave patterns to cover a wide
		area in one pass of the electrode.
		Do not let weave width	exceed
		2-1/2 times diameter of electrode.
		. A single stringer bead is
		satisfactory for most	narrow
		groove weld joints. For wide
		groove weld joints or bridging
3		across gaps, a weave bead
		works better.

S-0054-A

7-8. Butt Joints

1 Tack Welds

	2
	1/16 in	30°
	1/16 in
1	(1.6 mm)
1
	3

4

Prevent edges of joint from drawing together ahead of electrode by tack welding the materials in position be- fore final weld.

2 Square Groove Weld

Good for materials up to 3/16 in (5 mm) thick.

3 Single V-Groove Weld

Good for materials 3/16 through 3/4 in (5-19 mm) thick. Cut bevel with oxyacetylene or plasma cutting equipment. Remove scale from material after cutting. A grinder can also be used to prepare bevels.

Create 30 degree angle of bevel on materials in V-groove welding.

4 Double V-Groove Weld

Good for materials thicker than 3/16 in (5 mm).

S-0662

OM-949 Page 23

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Contents Description ProcessesFrom Hobart to You Table of Contents Page Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers UNE Décharge Électrique peut entraîner la mort LES Fumées ET LES GAZ peuvent être dangereuxIndique un message de sécurité particulier DES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer unIncendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut SUREn ce qui concerne les stimulateurs cardiaques Principales normes de sécuritéDuty Cycle Charts SpecificationsAmps Volt-Ampere CurvesSelecting a Location Volt ModelRemoving Barrel From Elec- trode Holder Installing Electrode Holder And Work ClampInstalling Electrode Cable and Barrel onto Electrode Holder Installing Work Cable onto Work ClampPut terminals Weld Output Cables150 ft 200 ft 250 ft 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 mConnecting Input Power Electrical Service GuideControls Routine Maintenance Lubricating Shunt Block And Anti-Noise AdjustmentMonths Wrapper Remove wrapper from unit Crank Handle Shunt Shaft Reinstalling Amperage Adjustment IndicatorTrouble Remedy Troubleshooting− Electrical Diagrams Welding Methods Shielded Metal Arc Welding Smaw Procedure − Welding Methods & Troubleshooting6013 7014 Electrode And Amperage Selection ChartPositioning The Electrode Holder Striking An ArcArc Length Weld Bead CharacteristicsConditions That Affect Weld Bead Shape Electrode AngleButt Joints Electrode Movement During WeldingPorosity Welding TroubleshootingLap Joints Tee JointsExcessive Spatter Incomplete FusionLack Of Penetration Distortion Excessive PenetrationBurn-Through Waviness Of BeadStart Your Professional Welding Career Now − Parts List Dia Part Description Quantity Page Service SupportAssistance Hobart Welding Products Contact your Distributor for