The Plasma cutting process has been around for more than 50 years starting during the World War II era. The war demanded a faster and more reliable way to improve aircraft development, thus the plasma cutter was born allowing a protective barrier of inert gas around an electric arc to protect the weld from oxidation. Over the course of the next several years, the plasma cutting process has drastically developed with further testing and improvements. At this time, it was discovered that by restricting the opening through which the inert gas passed, the heat produced by the process was tremendously elevated. At the same time, the smaller opening caused the flow of gas to speed up dramatically, ultimately blowing out a channel in the work. In the mid sixties, plasma arc cutters began seeing commercial use with everyday applications as the process became a bit more common even though it was still extremely expensive to carry out. Large factories were able to afford the advanced technology and thrived on the ability to cut metal quickly and more efficiently. Over the years, plasma cutting has worked its way into manufacturing plants, shops, and even homes. As the manufacturing of the plasma cutter cost has been reduced by development of technology and the competition of many affordable units such as Longevity plasma cutters, the plasma cutter process is now widely available and affordable in comparison to the early days and has become a must have tool for the working individual seeking or needing to cut metal. Currently, plasma cutters are dual voltage and there are units ranging from 20 to 400amps out on the market. With plasma cutting being such a powerful and efficient tool to cut metal, we are sure that a plasma cutter will not be replaced anytime soon and the technology advancement will only fine tune this already convenient technology. If you don t own a plasma cutter, now is the time to give it a shot. There are plenty of suppliers out there and do you research, but we currently recommend Longevity plasma cutters for the price and warranty period. Give them a try. Source: hicow.com
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http://www.hicow.com/plasma-cutting/world-war-ii/technology-39986.html