Differences Between AC and DC Welding

Before entering into the welding world, it is very important to know about the basic difference between AC and DC welding. Otherwise, once the job has been assigned, then you may face certain difficulties regarding which is which and what type of weld must be used. The main difference between the two is in the polarity. This article will explain in detail the main difference between ac and dc welder. 


 
1- The polarity 

In the case of AC welding, polarity may be an alternative. This means the AC welding can, at an instant, take turns between Dc positive and DC negative. Whereas in Dc welding, the polarity is single. It may be positive, or it may be negative.  
 
2- The strength of the welding done 

When it comes to the weld done by AC welding, the weld is very weak and, in some cases, does not last long. The spatter is also very heavy. Small debris and sparks are always lying around the AC welding machine. The weld strength of a DC welding machine is very strong and even. Dc welding is done for welding when the requirement of the part is very smooth.  
 
3- Places of application 

The most common places of application of AC welding are the job of long seam welds, large metals, aluminium, and magnetic materials. DC welding is most commonly used in upright or elevated places, welding of stainless TIG, among others.  
 
To conclude 

You can get the best ac and dc welder from Canaweld.

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