Large-Scale Nickel Alloy & Superalloy Processing
Nickel-based superalloys exhibit outstanding resistance to oxidation, localized corrosion, and high-temperature creeping. Because of these incredible material properties, they are the backbone of the aerospace, chemical processing, nuclear power, and deep-sea marine industries.
However, nickel alloys are notoriously difficult to manufacture. They work-harden rapidly during machining, require massive cutting forces, and demand highly controlled welding environments. Openex possesses the heavy, ultra-rigid CNC machine tools and certified clean-room welding capabilities required to process large-scale Inconel, Hastelloy, and Monel assemblies without compromising the material's integrity.
Nickel Alloy Grades We Process
Inconel® (600, 625, 718)
Austenitic nickel-chromium-based superalloys. Excels in extreme temperature and pressure environments.
Common Applications:Gas turbine blades, heat exchanger tubing, chemical processing vessels.
Hastelloy® (C-276, X)
Nickel-molybdenum alloys highly praised for surviving severe localized corrosion, reducing acids, and chlorides.
Common Applications:Chemical reactors, pressure vessel shells, flue gas desulfurization (FGD).
Monel® (400, K-500)
Nickel-copper alloys offering excellent corrosion resistance to rapidly flowing seawater and hydrofluoric acid.
Common Applications:Offshore marine equipment, shipbuilding components, heavy pump shafts.
Pure Nickel (200, 201)
Commercially pure wrought nickel with highly resistant properties against caustic alkalis.
Common Applications:Synthetic fiber production equipment, food processing machinery.
How Openex Overcomes Nickel Processing Challenges
Nickel alloys instantly work-harden if cut improperly. We utilize extremely rigid heavy gantry mills and large horizontal boring mills equipped with low-speed, high-torque spindles. Coupled with specialized carbide tooling and high-pressure coolant delivery, we ensure clean cuts on massive superalloy components.
Welding nickel requires immaculate joint preparation and advanced shielding gas techniques to prevent embrittlement. Our welders utilize Gas Tungsten Arc Welding (GTAW/TIG) with highly controlled heat input and inert gas back-purging, passing rigorous radiographic (RT) and ultrasonic (UT) Non-Destructive Testing (NDT).
Given the high value of these metals, dimensional stability is paramount. We perform complete Post-Weld Heat Treatment (PWHT) in our massive in-house furnaces. Furthermore, every pound of nickel we supply comes with comprehensive Material Test Reports (MTRs) and complete traceability to meet stringent energy and military codes.