WAVEFORM

CONTROL

TECHNOLOGYTM

JianZhang

May 13, 2008

Waveform Control

Modulation of the Welding Current to Achieve a Specific Welding Result

Waveform Control

–Determines Metal Transfer Mode

–Affects Heat Input

–Determines How Intermittent Events are Handled

Adaptive Control

–Regulates the Arc in Response to Variations Such as Stickout, Gap, Gas Composition, etc.

Synergic Control

–Waveform and Adaptive Control Parameters are Scheduled as Functions of Wire Feed Speed

CV WAVEFORM

FLUX-CORE WAVEFORM

PULSE WAVEFORM

ALUMINUM PULSE WAVEFORM

Power Mode™

4 Times Faster Than Conventional Short Arc

Proces

Rapid Arc

Lap welds: 3mm-3mm & 4mm-3mm

@ 75ipm w/ 0.045”SuperArcWire

Spater

Standard Pulse

Rapid-Arc Pulse

Low Spater

High Sped

Pulse-On-Pulse

PULSE-on-PULSE WAVEFORM

STT®WAVEFORM

Open root ligament is large ~ 0.22”(5.6mm)

Eliminates burn through on next weld pass

STT Open Root (viewed from inside of pipe)

Tandem MIG™

Tandem MIG Cuts Costs!

Torque Converters

Cylinders

Water Heaters

Lawn & Garden Equipment

Tanks

No gap

1/16”gap

3/32”gap

40 -80% increase vs. single wire.

Higher welding currents applied to small diameter electrodes.

Lower heat input.

Variable wire spacing.

Independent drag angle adjustment

Structural Fillet & Groove Welds

Joggle Joints

Pipe & Tubular Components

Multi-pass Weld

Pipe

Welding

Demo

Dry Run

Welding

Completed Weld

Power Wave AC/DC

Weld Controls

Effect of Wave Balance

Effect of DC Offset

Phase Relationship

Lead Arc

Trail Arc

Questions???