OEM Customized Precision CNC Machining Nickel Alloy Trunnion for Ball Valve Parts
Nickel alloy trunnions in valve applications are critical components designed to withstand extreme conditions, including high temperatures, corrosive environments, and wear and tear over extended periods. These trunnions are specifically utilized in ball valves, where they play a vital role in supporting the valve's ball, enabling precise control over the fluid flow.
Composition and Properties:
Nickel alloys are chosen for trunnions due to their exceptional properties:
- Corrosion Resistance: Nickel alloys provide excellent corrosion resistance, especially in environments like seawater, hydrofluoric acid, sulfuric acid, and alkalis. This makes them ideal for use in chemical, oil and gas, and marine applications.
- High-Temperature Performance: They can maintain their strength and toughness at high temperatures, making them suitable for high-temperature applications.
- Wear Resistance: Nickel alloys also exhibit good wear resistance, which is crucial for the longevity of trunnion components that are subject to movement and mechanical stress.
Because of these properties, nickel alloy trunnions are widely used in:
- Oil and Gas Industry: For controlling the flow of crude oil, natural gas, and in refining processes.
- Chemical Processing: In valves that manage corrosive substances and extreme temperatures.
- Power Generation: In the control systems of coal, gas, and nuclear power plants.
- Marine Applications: For sea water systems, naval ships, and offshore platforms where corrosion from salt water is a concern.
A few specific nickel alloys that are commonly used for trunnions include:
- Inconel (e.g., 625, 718): Known for high strength and excellent corrosion resistance in a wide range of acidic and high-temperature environments.
- Hastelloy (e.g., C-22, C-276): Offers outstanding corrosion resistance in the harshest environments such as chemical processing environments.
- Monel (e.g., 400, K-500): Excellent for sea water applications due to its resistance to corrosion.
The manufacturing of nickel alloy trunnions typically involves precision machining and treatment processes to achieve the necessary dimensional accuracy and surface finish. This ensures that the trunnions fit perfectly within the valve assembly and operate smoothly over their service life. Post-machining processes might include heat treatment to enhance mechanical properties and surface treatments to improve corrosion resistance.
In summary, nickel alloy trunnions are essential for ball valves operating in harsh environments, providing durability, resistance to corrosion, and longevity. Their selection is based on the specific requirements of the application, including environmental conditions and the mechanical stresses involved.
The following table lists only some of the grades
| Grade | UNS | DIN |
| Monel 400 | N04400 | W.Nr. 2.4360 |
| Monel K-500 | N05500 | W.Nr. 2.4375 |
| Inconel 625 | N06625 | W.Nr. 2.4856 |
| Inconel 718 | N07718 | W.Nr. 2.4668 |
| Inconel X-750 | N07750 | W. Nr. 2.4669 |
| Inconel 600 | N06600 | W.Nr. 2.4816 |
| Inconel 601 | N06601 | W.Nr. 2.4851 |
Production Process:
