Lincoln Electric 11006 manual General Information, Product Description, Design Features

1 GENERAL INFORMATION 1

PRODUCT DESCRIPTION

General Physical Description

The K278-1 Spreadarc has been designed to oscillate an Automatic welding head across the line of travel when welding long seams. The welding head and noz- zle are mounted to the Spreadarc carriage. The Spreadarc is then mounted to either a stationary head mount or travel carriage. The Spreadarc is compatible with all Lincoln Electric welding heads including the NA-3, NA-4, NA-5, and Power Feed-10S. The Spreadarc is often used in conjunction with the TC-3 Travel Carriage and Vertical Lift Adjuster.

General Functional Description

The Spreadarc produces a linear oscillation of the head and nozzle. A 24 VDC right-angle gear motor drives the carriage onto which wire drive is mounted, accommodating a 70-pound maximum load. The mov- ing carriage is supported on a top and bottom "V" track by four double row bearings, two on the top and two on the bottom. The carriage motion is produced by a pinion driving a rack that is mounted on the mov- ing carriage support.

Proximity switches control the length of travel. The proximity switches remain stationary and stops mount- ed to the moving carriage can be easily adjusted to control travel distance. Both left and right extremes are adjustable.

The operator can set the oscillation travel speed and dwell times at either end of the stroke to provide smoother bead edges. Additionally, the Jog Mode allows the operator to position the welding nozzle in the correct starting location for a particular weld seam. These values are set through a digital control panel on the front of the machine.

The oscillator uses bright digital displays and LED’s, toggle switches, and heavy-duty push button designed for every-day industrial use.

Advantages of the Spreadarc are:

Arc length remains constant during oscillation to pro- vide more uniform penetration.

Dwell timers provide periods at the end-points of the stroke for smoother bead edges.

The travel speed of the arc is uniform across the bead.

RECOMMENDED PROCESSES AND EQUIPMENT

RECOMMENDED PROCESSES

•The Spreadarc is compatible with all Lincoln Electric welding heads including the NA-3, NA-4, NA-5, and PF-10S.

•The Spreadarc can be used with submerged arc (SAW), flux-cored (FCAW) and solid wire MIG (GMAW) applications.

EQUIPMENT LIMITATIONS

•The Spreadarc cannot be used with a K96 horizon- tal head adjuster.

•The Spreadarc requires 42Vac input.

DESIGN FEATURES

•Compatible with NA-3, NA-4, NA-5, and PF-10S Automatic Heads.

•Load capacity – 70 pounds.

•Oscillation Speed – 10-150 inches per minute.

•Dwell Time (Left/Right) – 0.0-4.0 seconds.

•Jog feature for positioning nozzle before welding procedure begins.

•Rugged 24VDC Right-Angle gear motor.

•Bright, Digital Displays and LED’s.

•Heavy-duty push button.

•Proximity Sensors for adjustable sweep distance.

SPREADARC