Lincoln Electric IM649 manual Primary Pulse Waveform Components, Peak Current and Peak Time

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A-14

PULSE WAVE SHAPING PRINCIPLES

Appendix A

A.5 PRIMARY PULSE WAVEFORM COMPONENTS

The following paragraphs describe how peak current, peak time, frequency, and background current effect weld droplet transfer.

A.5.1 PEAK CURRENT AND PEAK TIME

A combination of peak current and peak time, Figure A-6, applies a force to detach the weld droplet from the electrode and propel it across the arc. Transition current is the current level required to achieve weld droplet formation. In order to achieve weld droplet transfer, the peak current must always be above the spray transition current.

FIGURE A-6. PEAK CURRENT AND PEAK TIME.

PEAK TIME

PEAK

PEAK TIME

PEAK

	FIXED	SMALLER	LARGER
	FIXED	DROPLET	DROPLET
	STICKOUT	DROPLET	DROPLET
	STICKOUT
		LONGER	SHORTER
		ARC	ARC
			27850039

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