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Lincoln Electric IM649 A.5 PRIMARY PULSE WAVEFORM COMPONENTS

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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.

A-14 Appendix A

PULSE WAVE SHAPING PRINCIPLES

WAVE DESIGNER

27850039

PEAK TIME

SMALLER LARGER

DROPLET DROPLET

LONGER SHORTER

ARC ARC

FIXED

STICKOUT

PEAK

Contents

Main Wave Designer SOFTWARE OPERATORS MANUAL IM649 Safety Depends on You Page i TABLE OF CONTENTS ii ii LICENSE INFORMATION iii iii LICENSE INFORMATION Page 1.1 PRODUCT OVERVIEW 1.2 USER RESPONSIBILITY Section 1 1-1 INTRODUCTION 1.3 COMPUTER SYSTEM REQUIREMENTS KEY TOPICS 1.4 SOFTWARE RELEASE DATA 1.5 WELDING EQUIPMENT REQUIREMENTS INTRODUCTION 2.1 FILE STORAGE LOCATIONS 2.2 SOFTWARE INSTALLATION PROCEDURE Section 2 2-1 2-2 Section 2 Wave Designer 2.3 EQUIPMENT INTERFACE CONNECTIONS Section 2 2-3 FIGURE 2-2. CONTROL BOARD DIP SWITCH SETTING. FIGURE2-3. INTERFACE CONNECTION. http://www.pc.ibm.com/qtechinfo/DSHY-3P5QW4.html How to enable the external serial port on your ThinkPad 2.4 EQUIPMENT/SOFTWARE STARTUP 600 -20 250 1.2 SOFTWARE OPERATION 3.2 WORKING IN 3-2 Section 3 WAVE DESIGNER 3.2.1 WAVEFORM EDITOR WINDOW Section 3 3-3 About the Procedure 3-4 Section 3 3.2.2 WAVEFORM EDITOR TOOL BAR 3.2.2.1 FILE MENU 3.2.2.2 TOOLS MENU Section 3 3-5 Help Tools Print Pulse Editor Ctrl+P Ctrl+E Ctrl+A Ctrl+F Ctrl+B STT Editor ArcScope Flash Custom Waveform Browse Mode Directory Upgrade Firmware Wave Designer Pro Waveform Editor Wave Designer ArcScope Printed on Thu Jul 09 07:25:58 EDT 1998 --- Amp --- dV/dt 3.2.3 EDITING AND SELECTING WORKPOINTS Section 3 3-7 Adapt Short End 600 -20 3.2.3.1 EDITING WORKPOINTS 3-8 Section 3 WorkPoint Editor 3.2.3.2 SELECTING WORKPOINTS Section 3 3-9 3.2.4 EDITING VARIABLE PARAMETERS 3-10 Section 3 Section 3 3-11 3.3 WAVE DESIGN PROCESS 3-12 Section 3 3.4 DOWNLOADING WAVE SHAPES Section 3 3-13 3.5 AUTOSAVE Page 4.1 INTRODUCTION 4.1.1 USING THE ARC SCOPE WINDOW Condense Live Update Condense 4.1.2 OTHER ARC SCOPE OPTIONS 4-2 Section 4 Section 4 4-3 Page TROUBLESHOOTING Page A.1 APPENDIX OVERVIEW Appendix A A-1 A-2 Appendix A Pulse Waveform Editor Status A.2 GMAW PULSE OVERVIEW % OVERSHOOT SPEED RAMP-UP RATE Appendix A A-3 A.3 ADAPTIVE AND NON-ADAPTIVE MODE A.3.1 ADAPTIVE MODE A.3.2 NON-ADAPTIVE MODE A-4 Appendix A = A.4 PULSE WAVE DESIGN PROCESS Appendix A A-5 A.4.1 SELECTING A STARTING WAVE SHAPE A-6 Appendix A A.4.2 CUSTOMIZING THE WAVE SHAPE 1. Select a Workpoint Appendix A A-7 2. Open the Adaptive Loop / Find the Optimal Arc Characteristics A-8 Appendix A 3. Close the Adaptive Loop / Adjust the Peak Voltage 4. Select an Adaptive Type (Optional) Appendix A A-9 5. Adjust the Start Control Parameters (Optional) A-10 Appendix A 6. Adjust the Shorting Control Parameters (Optional) Appendix A A-11 Shorting Control 7. Adjust the End Condition Parameters (Optional) A-12 Appendix A End Conditioning 8. Go Figure/ Make the Waveform Synergic Developing the 2nd Workpoint Appendix A A-13 WorkPoint Editor Workpoints Interpolation A.5 PRIMARY PULSE WAVEFORM COMPONENTS A.5.1 PEAK CURRENT AND PEAK TIME A-14 Appendix A A.5.2 FREQUENCY Appendix A A-15 A.5.3 BACKGROUND CURRENT A.6 SECONDARY WAVEFORM PARAMETERS A.6.1 RAMP-UP RATE A.6.2 RAMP OVERSHOOT % A.6.3 TAILOUT SPEED A.6.4 TAILOUT TIME A.7 APPLICATION EXERCISE Select a wave shape. Pick a wire feed speed Appendix A A-17 A-18 Appendix A Adaptive mode. set the Peak Voltage select No Adapt adjust the pulse variables to improve welding performance. Start Control A-20 Appendix A second workpoint Appendix A A-21 Page B.1 APPENDIX OVERVIEW Appendix B B-1 B-2 Appendix B STT Waveform Editor 200 Status AMPERES PINCH START dV/dt CALCULATE PEAK TIME PEAK AMPS SPEED BACKGROUND AMPS Appendix B B-3 B.3 STT (SURFACE TENSION TRANSFER) B-4 Appendix B p Surface Tension Transfer Electrode Electrode to work volts Electrode Amperes Appendix B B-5 B.4 STT WAVE DESIGN PROCESS B-6 Appendix B B.4.1 SELECTING A STARTING WAVE SHAPE Appendix B B-7 B.4.2 CUSTOMIZING THE WAVE SHAPE 1. Select a Workpoint B-8 Appendix B 2. Find the Optimal Arc Characteristics Appendix B B-9 3. Adjust the Start Control Parameters (Optional) B-10 Appendix B STT Start Control 4. Go Figure/ Make the Waveform Synergic Developing the 2nd Workpoint Appendix B B-11 WorkPoint Editor Workpoints Interpolation B.5 PRIMARY STT WAVEFORM COMPONENTS B.5.1 PEAK CURRENT B-12 Appendix B B.5.3 TAILOUT Appendix B B-13 B.5.2 BACKGROUND CURRENT B.6 SECONDARY STT WAVEFORM COMPONENTS B.7 APPLICATION EXERCISE Select a wave shape. Appendix B B-15 Pick a wire feed speed Select 130 adjust the STT variables to improve welding performance. B-16 Appendix B STT Waveform Editor A B C D INDEX INDEX M O P R INDEX