Hobart Welding Products OM-949 Weld Bead Characteristics, Conditions That Affect Weld Bead Shape

Page 26

7-5. Weld Bead Characteristics

Poor Weld Bead			1	Large Spatter Deposits
			2	Rough, Uneven Bead
			3	Slight Crater During Welding
1			4	Bad Overlap
2	3	4	5	Poor Penetration

				5
					S-0053-A
				1	Fine Spatter
				2	Uniform Bead
Good Weld Bead				3	Moderate Crater During
					Welding
				Weld a new bead or layer for each
				1/8 in (3.2 mm) thickness in metals
1			5	being welded.
1			5	4	No Overlap
				4	No Overlap
2	3	4		5	Good Penetration Into Base
					Metal

Ref. S-0052-B

7-6. Conditions That Affect Weld Bead Shape

Electrode Angle
Angle Too Small	Correct Angle	Angle Too Large
	10° - 30°
	Drag

Arc Length

Spatter

Too Short

Normal

Too Long

Travel Speed

Slow

Normal

Fast

S-0061

OM-949 Page 22

Image 26

Contents Processes DescriptionFrom Hobart to You Table of Contents Page Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or killCalifornia Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information Indique un message de sécurité particulier UNE Décharge Électrique peut entraîner la mortLES Fumées ET LES GAZ peuvent être dangereux DES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer unIncendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures graves’EMPLOI Excessif peut SUR Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaquesSpecifications Duty Cycle ChartsVolt Model Volt-Ampere CurvesSelecting a Location AmpsInstalling Work Cable onto Work Clamp Installing Electrode Holder And Work ClampInstalling Electrode Cable and Barrel onto Electrode Holder Removing Barrel From Elec- trode Holder350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Weld Output Cables150 ft 200 ft 250 ft Put terminalsElectrical Service Guide Connecting Input PowerControls Months Routine MaintenanceLubricating Shunt Block And Anti-Noise Adjustment Reinstalling Amperage Adjustment Indicator Wrapper Remove wrapper from unit Crank Handle Shunt ShaftTroubleshooting Trouble Remedy− Electrical Diagrams − Welding Methods & Troubleshooting Welding Methods Shielded Metal Arc Welding Smaw ProcedureElectrode And Amperage Selection Chart 6013 7014Striking An Arc Positioning The Electrode HolderElectrode Angle Weld Bead CharacteristicsConditions That Affect Weld Bead Shape Arc LengthElectrode Movement During Welding Butt JointsTee Joints Welding TroubleshootingLap Joints PorosityLack Of Penetration Excessive SpatterIncomplete Fusion Waviness Of Bead Excessive PenetrationBurn-Through DistortionStart Your Professional Welding Career Now − Parts List Dia Part Description Quantity Page Assistance ServiceSupport Contact your Distributor for Hobart Welding Products