Lincoln Electric IM649 manual Gmaw Pulse Overview, Figure A-1. Pulse Waveform Parameters

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A-2

PULSE WAVE SHAPING PRINCIPLES

Appendix A

A.2 GMAW PULSE OVERVIEW

Figure A-1 illustrates the variables of the GMAW-P welding process. Each of these variables can be programmed into a weld table using the Wave Designer software. Figure A-2 shows how the pulse waveform and the primary variables shape, detach and propel a weld droplet across the arc.

For more details on each of these variables, refer to Primary Pulse Waveform Components and Secondary Pulse Waveform Components in paragraphs A.5 and A.6 of this appendix.

FIGURE A-1. PULSE WAVEFORM PARAMETERS.

PEAK TIME

% OVERSHOOT

PEAK

AMPS

TAILOUT

TIME

TAILOUT SPEED

STEP-OFF

AMPS

BACKGROUND AMPS

BACKGROUND

TIME

1/FREQUENCY

27850026

Wave Designer Pro Off Line - pulse.swf

File Tools Print Help

Pulse Waveform Editor				700
Pulse Waveform Editor
Wire Feed Speed		50	Edit	600
Wire Feed Speed		50	Edit
Ramp Up Rate		600		500
Ramp Up Rate		600
Ramp Overshoot %		-20		400
Peak Amps		250		300
Peak Time ms		1.2		200
				200
Tailout Time		3.0
				100
Tailout Speed		.100
Stepoff Amps		40		0	0	3	6	9	12	15	18	21	24	27	30
Stepoff Amps		40

Backgrd Amps		21
Backgrd Amps		21

Backgrd Time		33.4

Frequency		26.4
Frequency		26.4


Start	Adapt	Short	End


	About
	About

Status	AC.sco loaded								Off Line	Stand by		Adaptive
Status									Off Line	Stand by		Adaptive
															27850027

WAVE DESIGNER

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Contents Wave Designer TM Page Table of Contents License Information Wave Designer Software License AgreementIii License Information Product Overview IntroductionKEY Topics User ResponsibilitySoftware Release Data Welding Equipment RequirementsSoftware Installation Procedure Software InstallationFile Storage Locations Equipment Interface Connections Welcome to Wave DesignerControl Board DIP Switch Setting Upgrade Firmware EQUIPMENT/SOFTWARE StartupSoftware Operation Synergic Welding and WorkpointsWorking in Wave Designer Waveform Editor WindowAbout the Procedure Waveform Editor Tool BAR File MenuTools Menu ToolsPrint Menu Wave Designer Pro Waveform EditorEditing and Selecting Workpoints MenuEditing Workpoints WorkPoint EditorSelecting Workpoints EffortsEditing Variable Parameters Expand GraphicWave Design Process Reference Paragraph see Appendix aFlashing PowerWave Custom Weld Files Downloading Wave ShapesAutosave Software Operation Arcscope Using the ARC Scope WindowIntroduction Other ARC Scope Options GSFFile Arcscope Troubleshooting Overview Wave Designer Troubleshooting ProcedureTroubleshooting Appendix Overview Pulse Wave Shaping PrinciplesAppendix a Gmaw Pulse Overview Figure A-1. Pulse Waveform ParametersFigure A-2. Weld Droplet Transfer Adaptive Mode Adaptive and NON-ADAPTIVE ModeNON-ADAPTIVE Mode Figure A-4. Process Flowchart Pulse Wave Design ProcessSelecting a Starting Wave Shape Customizing the Wave Shape Select a WorkpointAdapting Stickout Close the Adaptive Loop / Adjust the Peak Voltage Select an Adaptive Type OptionalAdjust the Start Control Parameters Optional Start ControlAdjust the Shorting Control Parameters Optional Shorting ControlAdjust the End Condition Parameters Optional End ConditioningGo Figure / Make the Waveform Synergic Developing the 2nd WorkpointPrimary Pulse Waveform Components Peak Current and Peak TimeFrequency Background CurrentSecondary Waveform Parameters Application Exercise Fresa Start Control Pulse Waveform Editor 28750046 Pulse Wave Shaping Principles STT Wave Shaping Principles Appendix BSTT Overview Peak Time Peak Amps Tailout SpeedFigure B-2. Weld Droplet Transfer Surface Tension Transfer STT Surface Tension TransferSTT Wave Shaping Principles STT Wave Design Process Reference Paragraph see Appendix BSelecting a Starting Wave Shape Inch / min meter / min Go Figure Find the Optimal Arc Characteristics STT Start Control WorkPoint Editor Primary STT Waveform Components Peak CurrentTailout PINCH/PEAK Secondary STT Waveform ComponentsPinch Start Peak TimeSTT Waveform Editor STT Waveform Editor Index Index-1Index-2 Index-3 VoltageIndex-4