When purchasing a new automated cutting table or retrofitting an existing one, which process is best--oxyfuel or plasma? The nature of the application and cutting process both play a role.
Fabricators mark parts for various reasons using different technologies, each with its own benefits. This article describes several marking options and further discusses plasma marking.
The methods used to shield the plasma arc from the atmosphere have evolved. The concept of using tap water to generate the secondary gas has been around for more than three decades, but high-precision plasma cutting using the nitrogen-water process was developed less than a decade ago.
Time spent on extensive weld prep easily can eliminate any gains made from faster plasma cutting. Put another way, it doesn't matter how fast a plasma cuts if the resulting cut face can't be welded efficiently.
Plasma cutting has become a process of choice for many because of its cost-effectiveness. However, this wasn't the case when the technology was introduced because of short consumable life. Technological innovations over the years, however, helped to change that.