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PTA/Laser Cladding Powder

PTA Description

The Plasma Transferred Arc (PTA) process employs the plasma principle hence it may be considered an evolution of the Gas Tungsten Arc Welding (GTAW) process, where the high-energy concentration is due to the use of a constrictor nose, which restrains the column diameter of an electric arc established between a tungsten electrode and the workpiece in an inert gas atmosphere, usually argon.

The feeding material is carried to the plasma jet by a gas stream, which might be inert, active or a mixture of active and inert gases. A third gas flow is employed to protect the metal pool from atmospheric contamination. Even though there is the possibility of using mixtures of active and inert gases, argon is typically employed for all three-gas systems.

 

PTA Applications

  • Hard Surfacing: PTAW is well suited to apply hard alloys for wear resistance. Stellite, Colmonoy, Hastelloy, and Tungsten Carbide can all be successfully applied with PTAW.
  • Corrosion Resistant Overlays: The localized heat input characteristics of PTAW allow corrosion resistant alloys to be applied with very little dilution into the base material. PTAW can achieve subsea chemistry requirements of <5% Fe in as little as 0.040” of overlay thickness.
  • Industries / Components:

- Non-Mag Down Hole Tools: Drill Collars, Wear Bands for MWDs, Flex Ponies etc.

- Down Hole Components: Mud Motor Bearings, Stabilizers, Topsubs, Piston SubsFlow Restrictors, Drill Bits etc.

- Flow Control: Valve Bores, Gates, Seats, Seat Pockets, Ring Grooves, Valve Stems etc...

- Power Generation: Turbine Blades, Shafts, Bearing Surfaces, etc.

- Riser Equipment o Pins, Boxes, etc.

 

Laser Cladding Description

Laser Cladding is a weld build-up process and a complementing coating technology to thermal spray. It is increasingly used instead of PTA (Plasma Transferred Arc) welding and easily outperforms conventional welding methods like TIG (Tungsten Inert Gas) for advanced weld repair applications.

In laser cladding, the laser beam is defocused on the workpiece with a selected spot size. The powder coating material is carried by an inert gas through a powder nozzle into the melt pool. The laser optics and powder nozzle are moved across the workpiece surface to deposit single tracks, complete layers or even high-volume build-ups.

 

Laser Cladding Applications

Laser cladding has recently gained an increased importance in a variety of industrial sectors such as automotive, aerospace, navy, defense and many others. Similar to overlay welding, laser cladding is a coating technique where a laser heat source is utilized to fuse and deposit a layer of a selected material on a substrate in order to form a defect-free protective coating, fusion bonded to the base material, with maximum coating material efficiency and minimum dilution (i.e. contamination due to the substrate material that has been melted and has mixed with the clad). The additive material can be deposited to the substrate by several methods: in form of powder or paste, that can be either injected during the process or pre-placed, or by wire/strip feeding.

Products

Iron base alloy

Nickel base alloy

Cobalt base alloy

Cast/Fused WC

Spherical Cast WC

Macro-Crystalline

 

Reference

A.S.C.M.D’Oliviera, R.S.C.Paredes, R.L.C. Santos: Pulsed current plasma transferres arc hardfaccing, Journal of Materials Processing Technology 171, 2006, p.167–174;

V.V.Diaz, J.C.Dutra, A.S.C.D’Oliveira: Hardfacing by Plasma Transferred Arc Process, INTECH, Ed.W.Sudnik, 2011, ISBN 978-953-307-642-3;

P.V. Senthill, A.Shirrushti: Finite Element Simulation of Plasma Transferred Arc Welding [PTAW} of structural steel, PV Senthiil Int. Journal of Engineering Research and Applications www.ijera.com ISSN : 2248-9622, Vol. 4, Issue 10(Part - 4), October 2014, p.06-11;

What is Plasma Transferred Arc Welding [PTAW], 1/12/15, js, Accessed Oct 2015;

Simone Zanzarin: Laser cladding with metallic powder. https://core.ac.uk/download/pdf/35317589.pdf

6 Products |

  • New

    TS2760 Cobalt-Based Alloy Powder for PTA/Laser Cladding

    High-quality Cobalt-Based Alloy Powder for PTA/Laser Cladding is available at Stanford Advanced Materials (SAM). With rich experience and knowledge in the metal industry, SAM is a worldwide supplier of Cobalt-Based Alloy Powder for PTA/Laser Cladding. Related Products: Chromium Carbide/Nickel Chromium Powder, Nickel Powder for Thermal Spraying, Silicon...

  • New

    TS2763 Iron-Based Alloy Powder for PTA/Laser Cladding

    High-quality Iron-Based Alloy Powder for PTA/Laser Cladding is available at Stanford Advanced Materials (SAM). With rich experience and knowledge in the metal industry, SAM is a trust-worthy supplier of Iron-Based Alloy Powder for PTA/Laser Cladding. Related Products: Chromium Carbide/Nickel Chromium Powder, Nickel Powder for Thermal Spraying, Silicon...

  • New

    TS2755 Cast/Fused WC Powder for PTA/Laser Cladding

    High-quality Cast/Fused WC Powder for PTA/Laser Cladding is available at Stanford Advanced Materials (SAM). SAM is a worldwide supplier of Cast/Fused WC Powder and has rich experience and knowledge in the metal industry. Related Products: Chromium Carbide/Nickel Chromium Powder, Nickel Powder for Thermal Spraying, Silicon Metalloid Powder for Thermal...

  • New

    TS2764 Macro-Crystalline WC Powder for PTA/Laser Cladding

    High-quality Macro-Crystalline WC Powder for PTA/Laser Cladding is available at Stanford Advanced Materials (SAM). With rich experience and knowledge in the metal industry, SAM is a global manufacturer of Macro-Crystalline WC Powder. Related Products: Chromium Carbide/Nickel Chromium Powder, Nickel Powder for Thermal Spraying, Silicon Metalloid Powder...

  • New

    TS2768 Nickel-Based Alloy Powder for PTA/Laser Cladding

    High-quality Nickel-Based Alloy Powder for PTA/Laser Cladding is available at Stanford Advanced Materials (SAM). With rich experience and knowledge in the metal industry, SAM is a global manufacturer of Nickel-Based Alloy Powder. Related Products: Chromium Carbide/Nickel Chromium Powder, Nickel Powder for Thermal Spraying, Silicon Metalloid Powder for...

  • New

    TS2770 Spherical Cast WC Powder for PTA/Laser Cladding

    High-quality Spherical Cast WC Powder for PTA/Laser Cladding is available at Stanford Advanced Materials (SAM). With rich experience and knowledge in the metal industry, SAM is a global manufacturer of Spherical Cast WC Powder for PTA/Laser Cladding. Related Products: Chromium Carbide/Nickel Chromium Powder, Nickel Powder for Thermal Spraying, Silicon...

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