Lincoln Electric High-Speed and High-Deposition Welding manual Using Tandem MIG

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W A V E F O R M C O N T R O L T E C H N O L O G Y T M

Tandem MIG

High-Speed and High-Deposition Welding

Using Tandem MIG

For High-Speed Applications

Flat and Horizontal Lap Welds 1.5 mm - 5 mm

Automotive, Tank Fabrication

Flat and horizontal lap welds common to automotive components like control arms, stub or full chassis frames, cross members, shock absorbers, struts, stabilizer arms and flex axles are performed at welding travel speeds ranging from 70 - 130 ipm. On thinner components with metal thickness ranging from

1.5- 3 mm, flat and horizontal lap welds are made with

(2) .035” diameter electrodes at travel speeds ranging from 100 - 130 ipm. Thicker components with metal thickness from 3 - 5 mm are performed with (2) .045” diameter electrodes at travel speeds ranging from 70 - 100 ipm.

Flat and Horizontal Fillet Welds 3 mm - 6 mm

General Light Gauge Steel Fabrication, Shipbuilding, Railroad

Light gauge steel fabrication of 3 - 4 mm fillet welds used to weld structural trusses, farm implements, residential and commercial storage systems, trash-hauling containers and similar components are welded with (2) .035” diameter electrodes to produce welds at travel speeds ranging from 80 - 100 ipm. Larger 4 - 6 mm fillet welds common to structural beams, light earth moving equipment, ship stiffeners, rail cars and similar components are welded with

(2).045” electrodes at travel speeds ranging from

50 - 80 ipm.

Joggle Joints 1.5 mm - 4 mm

Tanks and General Fabrication

Joggle joints require a careful balance of joint fill and controlled penetration. Tandem MIG provides the independent control of both, providing needed joint fill without excessive penetration. Joggle welds between

1.5and 3 mm, common to the light tank, truck bodies, trash-hauling containers and similar components are welded at travel speeds ranging from 80 - 120 ipm using (2) .035” diameter electrodes. Larger 3 - 4 mm joggle joints used in larger tanks and thicker containers are performed at welding speeds ranging from 40 - 80 ipm using (2) .045” diameter electrodes.

APPLICATION

4/16

This thin gauge lap weld was made at a

travel speed of 100 ipm

3/16” (4.8 mm) Horizontal Lap Weld

6mm Horizontal Fillet

Joggle Weld

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Contents Tandem Migtm What Is It? Tandem MIGHow Does It Work? Using Tandem MIG Flat and Horizontal Lap Welds 1.5 mm 5 mmFlat and Horizontal Fillet Welds 3 mm 6 mm Joggle Joints 1.5 mm 4 mmFlat and Horizontal Fillet Welds 6 mm and Larger Bevel and V Groove JointsU Groove Butt Welds Earth Moving Equipment Heavy Plate FabricationBetter Weld Metal Follow Characteristics Problem Single Wire GmawSolution Tandem MIG Comparing High-Speed Tandem MIGTravel Speed Comparison Comparing High-Deposition Tandem MIGHigher Deposition rates Reduced Heat Input and Improved Bead Profiles Horizontal Fillet WeldDeposition Rate Comparison Trail Arc Lead ArcTorch Positioning Work Lead Connection Shielding GasJoint Selection Configuring Tandem MIG Configuring Tandem MIG Models AD1201 1 and AD1201Power Feed 10R Wire Feeder Lincoln Welding Systems Featuring Tandem MIGPower Wave 455M Power Wave 655RAccu-Pak SuperArc/SuperGlideAccu-Trak