What is the arc welding in the plasma?
Plasma arc welding (PAW) is a process used instead of welding gas tungsten (GTAW). It can be used to weld any metal, which can be welding gas tungsten arc welding, which includes almost all commercially used alloys and metals. Plasma arc welding is considered to improve the GTAW process because the arch is more focused. This makes it possible to separate the arch in the plasma and the shading gas, which distinguishes the arc welding in the plasma from the welding of the gas arc. The plasma is forced by a copper opening at very high speeds and temperatures. The plasma arch reaches almost 36,032 ° Fahrenheit (about 20,000 degrees Celsius) and reaches the speed of the approaching sound. This increased focus gives the process more stability and concentration of energy than GTAW. In addition, the focused arc was used in Thmetoda allows the use of the process in an automated device, eliminating the need to place human workers in damage for dangerous welding operations.
The process of welding the plasma arch can also change on the basis of key components: the electric current is used to create an arc, the flow of plasma gas and the diameter of the copper opening. By changing any of these components, various arc welding modes in the plasma can achieve. The three most common variations of the arc welding process are micro-plasma, melt mode and keyhole mode.
plasma arc welding requires the flow of at least two types of gas. These types of gas are plasma gas and gas protection. The actual welding process uses plasma gas and the shading gas acts as a flow and protects the weld from the external atmosphere. The third type of gas, called the end gas or the return industry, will also be necessary to weld certain metals.
Although the arc welding in plasma is an improvement compared to welding gas tungsten arc, there are some disadvantages thatThey limit its use. This process is very expensive and complex compared to the gas tungsten welding process. The arc plasma welding requires routine maintenance of the torch and the replacement of the hole. The device used for plasma arc welding also requires a higher level of operator skill than gas tungsten welding, and this process is less forgiving in terms of setting variations and tolerance.