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Castolin DrilTec® STC-700 PTA Series

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SKU: 700 STC PTA Categories: ,

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Description

Plasma Transferred Arc (PTA) Alloys

The 700 series utilizes the Plasma Transferred Arc (PTA) to apply many different types of alloys, both for wear resistance with high levels of Tungsten Carbide (WC) in a tough matrix, and for corrosion resistant- and non-magnetic materials. We also have non-magnetic alloys with varying levels of WC. All have very low levels of base metal dilution compared with conventional arc welding processes.

 

Process description

The PTA process focuses a plasma beam through a heat resistant nozzle. The welding filler alloy, in the form of micro-atomized powder, is conveyed into the plasma arc column in an inert gas stream. A shielding gas protects the weld pool from the atmosphere. The resulting coating has very low dilution compared to conventional arc welding processes such as MMA, MIG/MAG or TIG. The coating structure can be optimized by varying the parameters of the system. It is ideal for automation and on a typical stabilizer coated with a WC alloy the final grinding-time is dramatically reduced. The process is also ideal for applying our range of non-magnetic alloys.

 

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