An overheated MIG gun can result in downtime, wasted consumables and lower productivity — costing a company more time and money than necessary.
|Gun overheating can be a symptom of numerous problems, and it can result in catastrophic failure if ignored. Being aware of the common signs and causes of MIG gun overheating can help prevent or quickly remedy the problem.|
Gun overheating can be a symptom of numerous problems, and it can result in catastrophic failure if ignored. Being aware of the common signs and causes of MIG gun overheating can help prevent or quickly remedy the problem. An overheated MIG gun can result in downtime, wasted consumables and lower productivity — costing a company more time and money than necessary.
Always know the gun’s amperage and duty cycle rating and the parameters of the welding application. This information tells you how long a specific gun can be used and under what conditions.
Gun manufacturers test and rate their products to prevent overheating. A gun’s assigned rating reflects the temperatures above which the handle or cable becomes uncomfortably warm — not the point at which the gun risks damage or failure. In addition, specific duty cycles are tested for each gun, such as 100 percent duty cycle with 100 percent carbon dioxide (CO2) or a 60 percent duty cycle with a mixed shielding gas (CO2/Argon). Most manufacturers list the amperage-to-duty-cycle ratios in product literature, so research a gun’s rating before purchasing.
Watch for the signs
There are signs that may indicate the MIG gun is overheating.
Common causes of overheating
In addition to knowing the signs of gun overheating, it is important to understand the common causes that lead to it.
|A faulty ground or a ground that is too far from the point of the weld can also cause front-end consumables, including contact tips, to overheat and wear prematurely. To help combat this problem, position the ground as close to the weld puddle as possible.|
Preventing gun overheating
Knowing the warning signs of gun overheating can help prevent the costly downtime. In applications where the gun is frequently overheating, it may be necessary to switch to heavier-duty consumables or use a larger capacity gun.
Implementing some best practices can also help reduce the occurrence of MIG gun overheating — to help you maximize productivity and savings.
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