Primary Pulse Waveform Components | Lincoln Electric IM649 instruction

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

Image 46

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

Contents

Wave Designer TM Page Table of Contents License Information Wave Designer Software License Agreement Iii License Information Product Overview IntroductionKEY Topics User Responsibility Software Release Data Welding Equipment Requirements Software Installation Procedure Software InstallationFile Storage Locations Equipment Interface Connections Welcome to Wave Designer Control Board DIP Switch Setting Upgrade Firmware EQUIPMENT/SOFTWARE Startup Software Operation Synergic Welding and Workpoints Working in Wave Designer Waveform Editor Window About the Procedure Waveform Editor Tool BAR File Menu Tools Menu Tools Print Menu Wave Designer Pro Waveform Editor Editing and Selecting Workpoints Menu Editing Workpoints WorkPoint Editor Selecting Workpoints Efforts Editing Variable Parameters Expand Graphic Wave Design Process Reference Paragraph see Appendix a Flashing PowerWave Custom Weld Files Downloading Wave Shapes Autosave Software Operation Arcscope Using the ARC Scope WindowIntroduction Other ARC Scope Options GSF File Arcscope Troubleshooting Overview Wave Designer Troubleshooting Procedure Troubleshooting Appendix Overview Pulse Wave Shaping PrinciplesAppendix a Gmaw Pulse Overview Figure A-1. Pulse Waveform Parameters Figure A-2. Weld Droplet Transfer Adaptive Mode Adaptive and NON-ADAPTIVE ModeNON-ADAPTIVE Mode Figure A-4. Process Flowchart Pulse Wave Design Process Selecting a Starting Wave Shape Customizing the Wave Shape Select a Workpoint Adapting Stickout Close the Adaptive Loop / Adjust the Peak Voltage Select an Adaptive Type Optional Adjust the Start Control Parameters Optional Start Control Adjust the Shorting Control Parameters Optional Shorting Control Adjust the End Condition Parameters Optional End Conditioning Go Figure / Make the Waveform Synergic Developing the 2nd Workpoint Primary Pulse Waveform Components Peak Current and Peak Time Frequency Background Current Secondary Waveform Parameters Application Exercise Fresa Start Control Pulse Waveform Editor 28750046 Pulse Wave Shaping Principles STT Wave Shaping Principles Appendix B STT Overview Peak Time Peak Amps Tailout Speed Figure B-2. Weld Droplet Transfer Surface Tension Transfer STT Surface Tension Transfer STT Wave Shaping Principles STT Wave Design Process Reference Paragraph see Appendix B Selecting 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 Current Tailout PINCH/PEAK Secondary STT Waveform ComponentsPinch Start Peak Time STT Waveform Editor STT Waveform Editor Index Index-1 Index-2 Index-3 Voltage Index-4