Advantages and Disadvantages of Plasma Arc Welding and Arc Cutting
This page covers advantages and disadvantages of Plasma Arc Welding and Arc Cutting. It mentions advantages of Plasma Arc Welding/Cutting and disadvantages of Plasma Arc Welding/Cutting.
As shown in the figure, there are four types of matter solid, liquid, gas and plasma. The figure depicts how one matter is obtained from the other and vice versa.
Advantages of Plasma Arc Cutting
Following are the advantages of Plasma Arc Cutting:
➨Any metals can be cut.
➨The cutting is faster (about 5 to 10 times) than Oxy-fuel.
➨It leaves narrower kerf.
➨Higher thickness ability of 150mm.
➨Easy to automate
Disadvantages of Plasma Arc Cutting
Following are the disadvantages of Plasma Arc Cutting:
➨Larger heat affected zone.
➨Rough surfaces
➨Difficult to develop sharp corners.
➨Smoke and noise gets generated.
➨The method often results into burr.
➨High initial cost of investment.
Advantages of Plasma Arc Welding
Following are the advantages of Plasma Arc Welding:
➨Torch design allows better control of arc.
➨This method provides more freedom to observe and control the weld.
➨The higher heat concentration and plasma jet allows faster travel speeds.
➨The high temperature and high heat concentration of plasma allow
keyhole effect. This provides complete penetration with single pass welding of
many joints.
➨Heat affected zone is smaller compare to GTAW.
Disadvantages of Plasma Arc Welding
Following are the disadvantages of Plasma Arc Welding:
➨It produces wider welds and heat affected zones compare to LBW and EBW.
➨Plasma welding equipments are very costly. Hence it will have higher start up costs.
➨It requires training and specialization to perform plasma welding.
➨It produces ultraviolet and infrared radiation.
➨The method produces higher noise on the order of about 100dB.
➨The torch is bulky and hence manual welding is bit difficult and
requires training as mentioned.
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