China brand: GH3536/GH536 nickel-based superalloy.

American brand: HastelloyX/UNS NO6002

French brand: NC22FeD

German brand: NiCr22FeMo

British brand: Nimonic PE 13

I. overview of GH3536(HastelloyX) nickel-based superalloy;

GH3536 is a nickel-based superalloy with high iron content, which is mainly strengthened by solid solution of chromium and molybdenum. It has good corrosion resistance and corrosion resistance, moderate endurance and creep strength below 900℃, and good cold and hot working formability and weldability. High temperature components such as combustion chamber components used in aero-engine manufacturing can be used below 900℃ for a long time, and the short-term working temperature can reach 1080℃. The main products supplied are plates, belts, tubes, bars, forgings, rings and precision castings.

1, GH3536 material brand: GH3536 (GH536, GH22, GH334, GH739, SG-5).

2. Similar brands of 2.GH3536: UNS NO6002, HastelloyX (USA), NiCr22FeMo (Germany), Nimonic PE 13 (UK).

3, GH3536 material technical standards:

4. Chemical composition of 4.GH3536: See table 1- 1.

Note: B is added according to the calculated amount without analysis.

5.GH3536 heat treatment system: plates and pipes:1130 ~1170℃, with rapid air cooling or water cooling; Rod and ring inspection samples: 1 175℃ 15℃, air cooling or rapid cooling; Strip steel:1065 ~1105℃, rapid cooling.

6. Specification and supply status of 6.GH3536: supply δ 0.5 ~ 4.0 mm plate, δ 0.05 ~ 0.8 mm strip, 4 ~ 20 mm pipe with wall thickness 1.0 ~ 2.0 mm, welding wire with diameter of 0.2 ~ 1.0~2.0mm, and diameter ≤300mm. Plate, strip and pipe are supplied after solution treatment and pickling, and strip can also be supplied in cold rolling state; The welding wire is in hard state, semi-hard state, solid solution plus pickling, bright solid solution treatment or direct transportation; Bars and rings are delivered without heat treatment. Precision castings are provided in the form of castings.

7. Melting and casting process of 7.GH3536: electric arc furnace plus electroslag or non-vacuum induction furnace plus electroslag remelting process. In casting production, the master alloy is remelted in the induction furnace and then poured into the heated shell, and the pouring speed is good.

8. General application and special requirements of 8.GH3536: The alloy has been widely used in aero-engines and civil industries abroad, and is mainly used to manufacture combustion chamber parts and other hot-end parts and honeycomb structures at home. The alloy has a certain age hardening phenomenon after long-term use at high temperature.

2. Physical and chemical properties of GH3536: Thermal properties of GH3536:

Melting temperature range 1 and gh3536 (gh536):1295 ~1381℃ [1].

2. Thermal conductivity of 2.GH3536(GH536): See Table 2- 1.

3. Specific heat capacity of 3.GH3536: See Table 2-2.

4. Density of 4.GH3536: ρ=8.3g/cm3.

Three. Characteristics of GH3536 alloy:

1, processability.

2. It has moderate durability and creep resistance at 900℃.

3. It has good oxidation resistance and corrosion resistance.

4. It is suitable for aero-engine combustion chamber and afterburner parts used below 900℃ for a long time. ?

5, good welding performance and cold and hot processing formability.

Four. Application fields of GH3536:

1, industrial and aviation steam turbines (combustion chamber, rectifier, structural cover).

2. Industrial furnace parts, support rollers, grid plates, aluminum strips and radiant tubes.

3. Spiral pipe in petrochemical furnace.

4. High temperature gas-cooled nuclear reactor.

Technical properties and requirements of verb (abbreviation of verb) GH3536;

1, and the solution treatment temperature range is1160℃ ~1/90℃, and the best is about 1 175℃.

In order to obtain the maximum creep strength, it is suggested that the cooling method is water quenching. For materials with a thickness less than 1.5mm, rapid air cooling can also be used. The highest annealing temperature for stress relief is 870℃. During heat treatment, the workpiece must be kept clean.

2. The adhesion of oxide on descaling surface and welding slag around weld is stronger than that of stainless steel, so it is recommended to use fine abrasive belt or fine grinding wheel for polishing.

3. Before pickling with HNO3/HF mixed acid, the oxide film must be destroyed by sandblasting or grinding.

4. Machining: Machining shall be carried out in the state of solution treatment. Because of the high work hardening property of Nicrofer 4722 Co, it is suggested to use lower cutting speed and re-feed for machining before turning the cold hardening surface layer.

5. Welding: Various welding processes such as tungsten inert gas shielded welding, plasma arc welding, manual sub-arc welding, metal inert gas shielded welding and metal inert gas can be used for welding. Pulse arc welding is preferred. Before welding, the material should be in a solid solution state, and the scale, oil stain and various traces should be removed. The width of about 25mm on both sides of the weld should be polished to a bright metal surface. With low heat input, the interlayer temperature shall not exceed 100℃.

6. No heat treatment is required before and after welding.

Variety specification and supply of intransitive verb GH3536;

1. Variety classification: Special alloy can produce various specifications of GH3536 seamless pipe, GH3536 steel plate, GH3536 round steel, GH3536 forgings, GH3536 flanges, GH3536 circular rings, GH3536 welded pipes, GH3536 steel belts, GH3536 welding wires and GH3536 supporting welding materials.

2, delivery status: seamless pipe: solid solution+acid white, the length can be determined; Plate: solid solution, pickling and trimming; Welded pipe: solid solution acid white +RT% flaw detection, forging: annealing+turning; Bar forging and rolling, surface polishing or turning; The strip is output after cold rolling, solution softening and descaling; The wire is delivered in the state of solution pickling, disc shape or straight bar, and the solution straight bar is finely polished.