Miller Electric Maxstar 200 STR manual Conditions That Affect Weld Bead Shape

Page 41

10-8. 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°

Drag

ELECTRODE ANGLE

Spatter

Too Short

Normal

Too Long

 

ARC LENGTH

 

Slow

Normal

Fast

 

TRAVEL SPEED

S-0061

 

 

10-9. 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

 

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.

3

S-0054-A

OM-2233 Page 35

Page 40 Page 42
Image 41
Page 40 Page 42
Contents Description OM-2233 203 409QProcesses From Miller to You Table of Contents − Parts List Decstat6/05 DirectivesStandards Page Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes 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 Incendie ou une explosion LE Soudage peut provoquer unDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesLA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresEn ce qui concerne les stimulateurs cardiaques Principales normes de sécurité− Definitions CE Models Electric shock from welding electrode or wiring can killFalling equipment can cause injury and damage to unit Weee Label For Products Sold Within The EU60 s Manufacturer’s Rating Label Symbols And DefinitionsSpecifications − InstallationTh e r In p u t V o lt a g e s Volt-Ampere Curves5 V a C In p u t Minutes Welding Duty Cycle And OverheatingOverheating MinutesSelecting a Location Dimensions And WeightSection Location And AirflowRemote 14 Receptacle Information Weld Output Terminals And Selecting Cable SizesTurn off power before mak- ing connections Stick Dcep Direct Current Electrode Positive Connections Electrical Service GuideInput Voltage Input Amperes At Rated OutputConnecting Three-Phase Input Power Connecting Input PowerFor Three-Phase Operation = GND/PE Earth GroundConnecting Single-Phase Input Power Non CE Units − OperationControls For CE Units Process Control Lift-ArcStart ProcedureLift-Arc Start ApplicationAmperage Control Stick Start Procedure − Scratch Start TechniqueDIG Control MinRoutine Maintenance − Maintenance and TroubleshootingBlowing Out Inside Of Unit MonthsHelp 8 Display Troubleshooting Help AidsOutput LED High Temperature LED Trouble Remedy TroubleshootingShield weld zone from drafts Check and tighten all gas fittings see SectionCircuit Diagram − Electrical DiagramsUp to Amperage Range Gas Type PolarityPositioning The Torch − Guidelines for Gtaw TIG WeldingPositioning Torch Tungsten For Various Weld Joints Torch Movement During WeldingTungsten Without Filler Rod Tungsten With Filler Rod− Stick Welding Smaw Guidelines Stick Welding ProcedureWeld current starts when electrode touches work- piece Striking an Arc − Tapping Technique Electrode and Amperage Selection ChartStriking an Arc − Scratch Start Technique Good Weld Bead Characteristics Poor Weld Bead CharacteristicsPositioning Electrode Holder 10-30 9090 End View of Work AngleElectrode Movement During Welding Conditions That Affect Weld Bead ShapeLap Joint Butt JointsTee Joint 16 in 30 1.6 mm Tack WeldsTroubleshooting − Excessive Spatter Troubleshooting − PorosityWeld Test Possible Causes Corrective ActionsTroubleshooting − Excessive Penetration Troubleshooting − Incomplete FusionTroubleshooting − Lack Of Penetration Troubleshooting − Distortion Troubleshooting − Burn-ThroughTroubleshooting − Waviness Of Bead 615 600 − Parts List2734 401 400402 614 PC2 602 400 601 603 605 Panel, Front w/Components -1ItemPanel, Rear w/Components Magnetics Assembly w/Components 1Item Windtunnel w/Components -1Item Windtunnel w/Components604 600 601 602 604Base Assembly Support ServiceYour distributor also gives 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

Maxstar 200 STR specifications

The Miller Electric Maxstar 200 STR is a versatile and compact welding power source designed for a range of applications, making it an ideal choice for both professional welders and hobbyists. Known for its reliability and exceptional performance, the Maxstar 200 STR is capable of delivering high-quality results in various welding processes, including Stick (SMAW) and TIG (GTAW) welding.

One of the standout features of the Maxstar 200 STR is its inverter technology, which allows for efficient energy use and a lightweight, portable design. Weighing in at just 51 pounds, it is easy to transport, making it perfect for fieldwork or remote projects. The unit operates on both 120V and 240V input power, providing versatility for different environments and applications. This adaptability ensures that welders can work effectively in various settings, whether in a shop or on a construction site.

Another significant characteristic of the Maxstar 200 STR is its precise arc control. The machine offers adjustable AC frequency, allowing users to fine-tune the arc characteristics for different materials and thicknesses. This level of control is particularly beneficial when working with aluminum, as it helps reduce heat input and minimize warping. The Maxstar also features a pulsing function, which can enhance the weld pool control and improve penetration, making it easier to achieve clean and consistent welds.

The Maxstar 200 STR boasts a robust duty cycle of 60% at 200A, ensuring that it can handle demanding jobs without overheating. Additionally, the unit is equipped with an advanced cooling system, which helps maintain optimal performance during extended use. Safety features, including overload protection and an enclosed design that reduces the risk of contamination, further enhance the machine's reliability.

Moreover, the Maxstar 200 STR supports a range of accessories, including a remote foot control, which allows for added flexibility during TIG welding operations. This feature is particularly useful for precise control over the welding current, enabling welders to make adjustments on the fly without having to stop and manually change settings.

In summary, the Miller Electric Maxstar 200 STR stands out in the welding industry for its combination of portability, advanced technology, and high performance. With its inverter design, precise arc control, and robust duty cycle, it is an ideal solution for professionals seeking efficiency and quality in their welding projects, whether they are working on industrial applications or artistic endeavors.
Top Page Image Contents