Conditions That Affect Weld Bead Shape

12-8. Conditions That Affect Weld Bead Shape

NOTE

Weld bead shape is affected by electrode angle, arc length, travel speed, and thickness of base metal.

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

Drag

ELECTRODE ANGLE

Spatter

Too Short	Normal	Too Long
	ARC LENGTH

Slow	Normal	Fast
	TRAVEL SPEED	S-0061
		S-0061

12-9. Electrode Movement During Welding

NOTE

Normally, a single stringer bead is satisfactory for most narrow groove weld joints; however, for wide groove weld joints or bridging across gaps, a weave bead or multiple stringer beads work better.

		1	Stringer Bead − Steady
			Movement Along Seam
1	2	2	Weave Bead − Side to Side
1	2		Movement Along Seam
			Movement Along Seam
		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.

S-0054-A

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Miller Electric 145 DX manual Conditions That Affect Weld Bead Shape, Electrode Movement During Welding

145 DX specifications

Miller Electric has established itself as a leading name in the welding industry, and the Miller Electric 145 DX and 145 are notable additions to its lineup of innovative welding machines. Designed to offer versatility and efficiency, these units cater to both novice welders and seasoned professionals seeking reliable equipment for various welding applications.

One of the key features of the Miller Electric 145 DX and 145 is their advanced welding technology. Both models utilize inverter technology, which allows for a compact design while delivering exceptional power. This inverter design not only increases efficiency but also reduces energy consumption, making it an environmentally friendly choice. The lightweight nature of these units makes them highly portable, allowing users to easily transport them to job sites or move them around the workshop.

The Miller Electric 145 DX model incorporates a digital interface that simplifies set-up and operation. This user-friendly digital display shows critical parameters such as voltage and amperage, helping the operator make quick adjustments on-the-fly for optimal results. The advanced Auto-Set feature adjusts the machine settings automatically based on the material thickness and type, significantly reducing the learning curve for inexperienced welders.

Both the 145 DX and 145 models can handle a variety of welding processes, including MIG and TIG welding. This versatility makes them suitable for a wide range of applications, from automotive repair and fabrication to metal sculpture and DIY projects. The machines are capable of welding aluminum, stainless steel, and mild steel with ease, providing excellent penetration and bead appearance.

Another noteworthy characteristic of the Miller Electric 145 series is their reliability and durability. Designed with robust components that can withstand challenging working environments, these machines are built to last. The thermal overload protection feature ensures the units do not overheat, safeguarding the internal components and ensuring a longer operational life.

In summary, the Miller Electric 145 DX and 145 stand out in the welding equipment market due to their advanced inverter technology, user-friendly digital interfaces, versatile capabilities, and durability. They are ideal choices for anyone looking to elevate their welding experience, delivering consistent and reliable performance across a variety of projects.

Contents

Processes OM-4417210 403CDescription File Engine Drive From Miller to You Table of Contents Page Arc Welding Hazards Symbol Usage Engine Hazards Compressed Air Hazards California Proposition 65 Warnings Principal Safety StandardsEMF Information 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 Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un in- cendie ou une explosionDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut affecter l’ouïe ’EMPLOI Excessif peut ’AIR Comprimé peut provoquer des blessuresLE Surchauffement peut endom- mager le moteur électrique LES Étincelles Volantes risquent de provoquer des blessures Pour les moteurs à essence LE Soudage À L’ARC risque de provoquer des interférencesPour les moteurs diesel Boulevard, Rexdale, Ontario, Canada M9W 1R3 téléphone Symbol Definitions − SpecificationsWeld, Power, And Engine Specifications − Definitions Dimensions, Weights, And Operating Angles DimensionsVolt-Ampere Curves Fuel Consumption Generator Power Curve Duty Cycle100% Duty Cycle at 80 Amperes CC/DC − Installation Installing Welding GeneratorGrounding Generator To Truck Or Trailer Frame Engine Prestart Checks − Standard Model Grounding Generator When Supplying Building Systems13 mm Full Gasoline Fuel Valve Open valve Engine Prestart Checks − DX Model Connecting The Battery DX Models Only+ − Tools Needed 1/2 Selecting Weld Cable Sizes Connecting To Weld Output Terminals150 ft 200 ft 250 ft 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Material Thickness Reference Chart Controls Standard Models See Section − Operating the Welding Generator Description Of Controls Standard Models See Section Stop engine and add oil if light goes on see SectionTo Start Controls DX Models See Section Description Of Controls DX Models See Section Generator Power Panel Receptacles − Operating Auxiliary EquipmentAC Receptacle RC1 Routine Maintenance − Maintenance Servicing Air Cleaner Stop engineStandard Model Shown Adjusting Engine Speed Standard Models Only Stop engine. Close fuel valveTools Needed Adjusting Engine Speed DX Models Only Weld/Power Speed AdjustmentIdle Speed Adjustment Troubleshooting − TroubleshootingGenerator Power Welding Engine Circuit Diagram For Standard Models − Electrical Diagrams Circuit Diagram for DX Models Selecting Equipment − Generator Power Guidelines How Much Power Does Equipment Require? Grounding When Supplying Building SystemsEarth ground if supplying Amperes x Volts = Watts Approximate Power Requirements For Farm/Home Equipment Approximate Power Requirements For Industrial MotorsIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running Watts Contractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor Equipment How Much Power Can Generator Supply? Power Required To Start MotorSingle-Phase Induction Motor Starting Requirements KVA/HP x HP x 1000 = Starting Amperage Typical Connections To Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord Possible Stick Welding Procedure Weld current starts when electrode touches work- piece− Stick Welding Smaw Guidelines Electrode and Amperage Selection Chart Striking an Arc − Scratch Start TechniqueStriking an Arc − Tapping Technique Good Weld Bead Characteristics Poor Weld Bead CharacteristicsPositioning Electrode Holder 10-30 9090 End View of Work Angle Electrode Movement During Welding Conditions That Affect Weld Bead Shape Lap Joint Butt JointsTee Joint 16 in 30 1.6 mm Tack Welds Troubleshooting − Excessive Spatter Troubleshooting − PorosityWeld Test Possible Causes Corrective Actions Troubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Excessive Penetration Troubleshooting − Burn-Through Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Main Assembly Standard Model − Parts List Dia Part Description Quantity Mkgs 4546 51 41 Main Assembly DX Model Main Assembly OM-4417 Service Your distributor also givesSupport Miller Electric Mfg. Co To locate a Distributor or Service Agency visitFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s

Miller Electric 145 DX Conditions That Affect Weld Bead Shape, Electrode Movement During Welding

Models: 145 DX

12-8. Conditions That Affect Weld Bead Shape

12-9. Electrode Movement During Welding

Weave Patterns

145 DX specifications