K418 - Lincoln Electric LN-7GMA Timer and Burnback Control Kit

Enhance Your LN-7GMA Performance with the Lincoln K418 GMA Timer Kit

The Lincoln Electric K418 GMA Timer Kit is a specialized accessory designed exclusively for the LN-7GMA wire feeder, providing critical timing and control functions that elevate the precision of your welding operations. In industrial welding environments, the timing of shielding gas application and the termination of the welding arc are pivotal factors in achieving high-quality, defect-free welds. This kit integrates seamlessly with your existing equipment to automate these processes, reducing operator error and ensuring consistency across every weld bead.

One of the primary features of the K418 is its comprehensive gas flow control. The kit provides adjustable preflow and post-flow delays. Preflow ensures that the weld zone is fully purged of atmospheric contaminants before the arc is struck, significantly reducing the risk of porosity at the start of the weld. Similarly, the post-flow function maintains shielding gas coverage over the molten puddle as it solidifies, protecting the crater from oxidation and cracking. These automated timers allow welders to focus on their technique rather than manually managing gas coverage timing.

In addition to gas management, the K418 kit addresses common wire feeding challenges with its adjustable burnback control. Burnback refers to the length of wire that remains sticking out of the contact tip after the trigger is released. Without proper control, the wire can freeze in the weld puddle or fuse to the contact tip, causing downtime and requiring consumable replacement. This kit allows operators to fine-tune the burnback time, ensuring a clean break of the wire and a consistent stick-out length for the next arc start.

Furthermore, the inclusion of a Purge/Cold Inch switch adds a layer of convenience and safety. The 'Purge' function allows operators to clear the gas lines without feeding wire, ensuring pure shielding gas is available immediately. The 'Cold Inch' function enables the feeding of wire without energizing the welding circuit, making it safe and easy to thread new spools through the gun cable. This made-to-order kit is an essential upgrade for any professional utilizing the LN-7GMA platform.