Definition: When you’ve overused your contact tip it will tend to adopt an oval shape bore. #3 – Oval-Shaped Contact Tip (Keyholing): Signs and Consequences: Wear can provoke several issues such as wire placement offset, erratic arc and irregular welds, in robotic welding it will cause missed weld joints by modifying the Tool Center Point of your MIG gun. Definition: When evident erosion is present in the MIG contact tip bore caused by friction of the wire feeding through the bore. NOTE: A burnback is a “process failure” that causes a tip failure and wastes contact tips, you need to make some adjustments in the welding machine settings to eliminate them. Signs and Consequences: arc instability, irregular wire feeding, and stoppages in wire feeding. Definition: When the wire melts and “burns back”, fusing to the contact tip. Similar to the symptoms of a disease, your welding tips will exhibit certain signs that will literally scream to you that it’s time to replace them.īelow, you will find the full list of signs to diagnose your MIG welding tip: When To Replace Your MIG Welding Contact Tip: 5 Signs to Recognize #Flux welder tips how to
You’re about to learn how to recognize the signs to change your welding tip, the reasons that might be shortening its useful life, and most importantly, how to extend its life to save you both time and money.
In either case, our free guide will help you.
You want to optimize the life of your MIG welding tips to save time and money. You’re a beginner to MIG welding and you’re just getting started. 
You’re here because you fall into any of the following cases:
In this guide, you’re going to learn when to replace MIG welding contact tips, reasons for a short contact tip life and how to extend the life of your contact tips.
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