Miller Electric 145 DXR, 145, Blue Star 145 manual Electrode and Amperage Selection Chart

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13-2. Electrode and Amperage Selection Chart

ELECTRODE

DIAMETER

AMPERAGE RANGE

50

100

150

200

250

300

350

400

450

ELECTRODE

DC*

AC

POSITION

PENETRATION

USAGE

6011

7/32

3/32

6010

1/8

5/32

&

3/16

1/4

6010

EP

ALL

DEEP

MIN. PREP, ROUGH

1/16

6011

EP

ALL

DEEP

HIGH SPATTER

5/64

6013

EP,EN

ALL

LOW

GENERAL

3/32

6013

1/8

7014

EP,EN

ALL

MED

SMOOTH, EASY,

5/32

FAST

3/16

7018

EP

ALL

LOW

LOW HYDROGEN,

7/32

STRONG

1/4

FLAT

SMOOTH, EASY,

3/32

7024

EP,EN

HORIZ

LOW

FASTER

FILLET

1/8

NI-CL

EP

ALL

LOW

CAST IRON

7014

5/32

308L

EP

ALL

LOW

STAINLESS

3/16

7/32

*EP = ELECTRODE POSITIVE (REVERSE POLARITY)

1/4

EN = ELECTRODE NEGATIVE (STRAIGHT POLARITY)

3/32

1/8

7018

5/32

3/16

7/32

1/4

3/32

1/8

7024

5/32

3/16

7/32

1/4

3/32

Ni-Cl

1/8

5/32

3/16

3/32

308L

1/8

5/32

Ref. S-087 985-A

13-3. Striking an Arc − Scratch Start Technique

1	1	Electrode
	2	Workpiece
	3	Arc
	Drag electrode across workpiece
2	like striking a match; lift electrode
	slightly after touching work. If arc
	goes out electrode was lifted to
	high. If electrode sticks to work-
3	piece, use a quick twist to free it.

		S-0049

13-4. Striking an Arc − Tapping Technique

1	1	Electrode
	2	Workpiece
	3	Arc
	Bring electrode straight down to
2	workpiece; then lift slightly to start
2	arc. If arc goes out, electrode was
	lifted too high. If electrode sticks to
	workpiece, use a quick twist to free it.
3
		S-0050

OM-4417 Page 42

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Contents Description OM-4417210 403FProcesses File Engine DriveFrom Miller to You Table of Contents Page Electric Shock can kill Symbol UsageArc Welding Hazards HOT Parts can cause severe burnsARC Rays can burn eyes and skin Fumes and Gases can be hazardousBuildup of GAS can injure or kill Welding can cause fire or explosionEngine Hazards Compressed Air HazardsFire or Explosion hazard Welding Wire can cause injuryHOT Parts can cause burns and injury Falling Unit can cause injuryEMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings Radiation can cause interference− Consignes DE Sécurité − Lire Avant Utilisation Signification des symbolesUN Choc Électrique peut tuer LES Fumées ET LES GAZ peuvent être dangereux DES Pièces Chaudes peuvent provoquer des brûlures gravesLE Soudage peut provoquer un in cendie ou une explosion ’EXPLOSION DE LA Batterie peu LE Bruit peut affecter l’ouïeDES Organes Mobiles peuvent pro voquer des blessures ’AIR Comprimé peut provoquer des blessures LA Chaleur DU Moteur peut pro- voquer un incendieRisque D’INCENDIE OU D’EXPLO- Sion LES Fils DE Soudage peuvent provoquer des blessures LE Surchauffement peut endom- mager le moteur électriqueDES Organes Mobiles peuvent provoquer des blessures ’EMPLOI Excessif peutPrincipales normes de sécurité Proposition californienne 65 AvertissementsInformation EMF Weld, Power, And Engine Specifications − SpecificationsSymbol Definitions − DefinitionsDimensions Dimensions, Weights, And Operating AnglesVolt-Ampere Curves Fuel Consumption 100% Duty Cycle at 80 Amperes CC/DC Generator Power CurveDuty Cycle Minutes WeldingMovement − InstallationInstalling Welding Generator HazardsEngine Prestart Checks − Standard Model Grounding Generator When Supplying Building SystemsOil Connecting The Battery DX Models Only Engine Prestart Checks − DX Model45 m 60 m 70 m 90 m 105 m 120 m 10 − Connecting To Weld Output TerminalsSelecting Weld Cable Sizes Put terminals− Operating the Welding Generator Controls Standard Models See SectionStop engine and add oil if light goes on see Section Description Of Controls Standard Models See SectionTo Start Controls DX Models See Section Description Of Controls DX Models See Section − Operating Auxiliary Equipment Generator Power Panel ReceptaclesAC Receptacle RC1 − Maintenance Routine MaintenanceStop engine Servicing Air CleanerPrecleaner Paper Element Standard Model ShownValve Adjusting Engine Speed Standard Models OnlyStop Engine Close Tools NeededWeld/Power Speed Adjustment Adjusting Engine Speed DX Models OnlyIdle Speed Adjustment Generator Power − TroubleshootingTroubleshooting WeldingEngine Recommended Spare Parts − Parts ListRecommended Spare Parts − Electrical Diagrams Circuit Diagram For Standard ModelsCircuit Diagram for DX Models Selecting Equipment − Generator Power GuidelinesGrounding Generator To Truck Or Trailer Frame Grounding When Supplying Building Systems How Much Power Does Equipment Require?Industrial Motors Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsSingle-Phase Induction Motor Starting Requirements Power Required To Start MotorHow Much Power Can Generator Supply? KVA/HP x HP x 1000 / Volts = Starting Amperage Typical Connections To Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord PossibleCord Lengths for 120 Volt Loads Cord Lengths for 240 Volt LoadsStick Welding Procedure − Stick Welding Smaw GuidelinesStriking an Arc − Scratch Start Technique Electrode and Amperage Selection ChartStriking an Arc − Tapping Technique Positioning Electrode Holder Poor Weld Bead CharacteristicsGood Weld Bead Characteristics 10-30 9090 End View of Work AngleConditions That Affect Weld Bead Shape Electrode Movement During WeldingTee Joint Butt JointsLap Joint 16 in 30 1.6 mm Tack WeldsWeld Test Troubleshooting − PorosityTroubleshooting − Excessive Spatter Possible Causes Corrective ActionsTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Excessive Penetration Troubleshooting − Waviness Of Bead Troubleshooting − Burn-ThroughTroubleshooting − Distortion Your distributor also gives ServiceSupport For assistance in filing or settling claims, contact To locate a Distributor or Service Agency visitMiller Electric Mfg. Co Your distributor and/or equipment manufacturer’s