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EWI’s Laser Equipment  15-kW IPG Fiber Laser 4-way beam switch 15-kW Laser.

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Presentation on theme: "EWI’s Laser Equipment  15-kW IPG Fiber Laser 4-way beam switch 15-kW Laser."— Presentation transcript:

1 EWI’s Laser Equipment  15-kW IPG Fiber Laser 4-way beam switch 15-kW Laser

2 Laser Optics for Broad Coverage  Off-the-shelf integrated focusing optic  Integrator lens with 6- × 8-mm rectangular spot Beam shape on thermoplastic burn block Beam shape on burn paper Integrator Lens

3 Broad Process Setup  Fiber optic delivery  Laser head  Integrator lens  Custom power nozzle  Powder delivery line  Powder delivery system

4 Samples Stainless to Steel Stellite to Steel Inconel (2 pass)

5 Dilution 6 mm L1 L2 A3 A2 A1 ~2.6% Dilution  Dilution typically less than 5%

6 10-kW Fiber Laser  316L on 4130  9- × 12-mm rectangular spot  8 kW  ~1 mm build-up (single pass)

7 Submerged Arc Strip Cladding SASC  Typically 750 A, up to 40 lb/hr Typical dilution of %

8 Electroslag Strip Cladding  ESC - Typically 1400 A, up to 60 lb/hr, dilution 5-15%

9 Additive Manufacturing (AM) – An Extension of Cladding  From single beads stacked upon each other (bottom)  To large features at high deposition rates (top)  Mitigated by balance of net-shape, metallurgical requirements, mechanical properties (tensile, fatigue, etc.)

10 AM – Progressive Layers  Additive manufacturing - build in layers, stress relieve/PWHT, machine, as/if necessary

11 Deposition Rate vs Resolution Courtesy Boeing Decreased Resolution Increased Deposition Rate

12 Summary  Surface engineering is a broad field ranging from ion implantation to explosive cladding in terms of the mass of material deposited in unit time.  Practical methods for powder and strip cladding areas large and small, across a range of industries, include fusion-based processes such as GTA, PTA, GMA, laser, SASC, and ESSC depending on the area to be clad, deposit thickness, and chemistry required. Others include thermal spray, e.g., HVOF.  Many processes require two layers to achieve the desired surface chemistry and corrosion resistance; others require only one layer.

13 Questions? Ian D. Harris Technology Leader, Arc Welding Phone:

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