Alliage NIMONIC 81
Nous pouvons produire des tiges rondes en acier inoxydable NIMONIC en alliage 81, des pièces forgées en alliage NIMONIC 81, des tôles, des bobines et des bandes profilées, de l'acier déformé, de l'acier plat, des moules, du fil d'acier, avec toutes les spécifications. Avec l'expérience de production DuoNian, un contrôle strict de la composition chimique de l'alliage NIMONIC 81 et des propriétés mécaniques de l'alliage NIMONIC 81. Du moulage, du forgeage, de l'acier au processus de laminage à chaud et à froid, au traitement thermique, etc., nous avons le contrôle d'ingénieurs professionnels. Nous disposons d'équipements d'usinage de précision avancés, selon les exigences des utilisateurs en matière d'usinage. afin d'obtenir la plus grande satisfaction possible avec les exigences des utilisateurs.
Nimonic® 81 Spécification de production
- Acier à barres rondes : 1 mm à 3 500 mm
- Acier de forme carrée : 1mm à 4000mm
- Plaque d'acier : 0,1 mm à 4000 mm
- Largeur : 10mm à 2500mm
Longueur : nous pouvons fournir n'importe quelle longueur en fonction des besoins du client.
Forger : Tableau de données pour
Tubes: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer’s requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer’s requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer’s requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
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Nimonic 81(Nimonic® 81) Nickel Based Superalloy
NIMONIC® 81 and Nimonic 81 is a wrought nickel alloy hardened by controlled additions of titanium and aluminum, and designed to provide enhanced resistance to high temperature corrosion coupled with good high temperature strength. It has excellent hot corrosion resistance due to its high chromium content.
Elevated temperature strength characteristics are similar to those of Alliage NIMONIC 80A. Melting, hot-working, cold-working and machining practices are also broadly similar to those for Alliage NIMONIC 80A. Applications include components for gas turbines, piston engine exhaust valves, and heat-exchange plant subject to attack by deposits resulting from the combustion of impure fuels, particularly by alkali metal sulfates and chlorides.
Nimonic 81(NIMONIC® 81) is normally used in the solution- and precipitation-treated condition. This heat treatment is generally carried out in air. Material is usually supplied in the solution-treated condition and is aged by the customer as part of the fabrication process. NIMONIC alloy 81 can, however, be supplied to any requested heat-treatment condition. Details of the recommended heat treatments for various forms are given below, where the stated times represent the times at temperature. In establishing furnacing time due allowance must, of course, be made for furnace characteristics and charge weight.
Nimonic 81 Mechanical Properties:
| Matériel | Ultimate Tensile Strength (MPA) | 0.2 % Yield Strength (MPA) | % Allongement |
|---|---|---|---|
| Nimonic 81 | 874 | 565 | 14 |
Nimonic® 81 Chemical Composition:
| Élément | Contenu (%) |
|---|---|
| Nickel, Ni | 63 |
| Chrome, Cr | ≤30 |
| Cobalt, Co | ≤2 |
| Titane, Ti | 1.8 |
| Fer, Fe | ≤1.0 |
| Aluminium, Al | 0.9 |
| Les autres | Reste |
Nimonic® 81 Physical Properties:
| Propriétés | Métrique | Impérial |
|---|---|---|
| Densité | 8.06 gm/cm3 | 0.291 lb/in3 |
Nimonic® 81 Heat Treatment:
Nimonic® 81 Hot working
NIMONIC alloy 81 can be hot worked at temperature ranges of 950-1160°C (1742-2120°F).
Nimonic® 81 Forging
NIMONIC alloy 81 can be hot forged at temperatures in the range of 1010-1176°C (1850-2150°F).
Nimonic® 81 Cold working
Cold working may be done on the alloy for hardening.
Nimonic® 81 Annealing
NIMONIC alloy 81 should be solution annealed at 1098°C (2010°F) for about 8 hours.
Nimonic® 81 Applications
- Heat exchange plant.
- Gas turbine engineering
- Piston engine exhaust valves
