Repair and Reconstruction Services of Gas and Steam Turbine Parts Using the Plasma Transferred Arc Welding (PTAW) Method
Application:
Repair and reconstruction of gas and steam turbine parts (in carbon steel welding and penetration welding of stainless steel and non-ferrous metals)
Product Introduction:
Plasma Transferred Arc Welding is an electric arc welding process similar to gas tungsten arc welding (GTAW). An electric arc is established between the electrode (which is usually but not always made of porous tungsten) and the workpiece. The main difference between this process and GTAW is that in PTAW, depending on the position of the electrode inside the torch body, the plasma arc can be separated from the protective gas cover; Also, the filler used in this method, instead of the electrode wire, is the desired powder, which makes it possible to change the percentage of some elements or add ceramic particles so as to create a metal base composite with ceramic particle reinforcement.
In this process, an electric arc is established between the electrode, which is the negative pole, and the workpiece, which is the positive pole. In other words, the electric arc is transferred from the electrode to the workpiece. The transferred arc has a high energy density and a high plasma jet speed, therefore it is suitable for melting metals.
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First Chapter | Turbines Section: Gas Turbines & Their Parts
Technical Specifications:
First phase: initial investigation and laboratory phase |
٭ Metallurgical and mechanical examination of used parts and characterization of the part ٭ Cladding operations on the prototype ٭ Quality control and process verification |
The second phase: modification and reconstruction of the main piece |
٭ Installation of equipment and implementation of the reconstruction process ٭ Quality control ٭ Final control after initial machining |
Advantages:
* Using parts made of alloys with favorable mechanical properties and very high fatigue resistance
* Very high accuracy of parts dimensions
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Type | This product is a final B2B service. |