Performance analysis and application research of GH3536 high temperature alloy
Overview of GH3636: High-temperature alloys refer to a type of metal material based on iron, nickel, and cobalt that can work at high temperatures above 600°C and under certain stress for a long time, and has high high-temperature strength, good oxidation resistance, and The comprehensive properties such as hot corrosion resistance, good fatigue performance and fracture toughness are called superalloy in Europe and the United States. It is usually used for components that work under high temperature (600~1200℃) and complex stress conditions for a long time.
Nickel-based alloy is currently the most widely used high-temperature alloy and is mainly used in working environments such as high temperature, strong acid or alkali, and strong oxidation. Its development and use began in the late 1930s against the background that the emergence of jet aircraft placed higher requirements on the performance of high-temperature alloys. This article will introduce nickel-based alloys from the following aspects.
Next, GNEE introduces the main application range of GH3536, a nickel-based alloy:
New grade: GH3536
Old brand: GH536
Chinese brand: GH3536/GH536 nickel-based high-temperature alloy
American brand: HastelloyX/UNS NO6002
French brand: NC22FeD
German brand: NiCr22FeMo
British brand: Nimonic PE13
1. Overview of GH3536 (HastelloyX) nickel-based high-temperature alloy:
GH3536 is a nickel-based high-temperature alloy with a high iron content that is mainly solid solution strengthened with chromium and molybdenum. It has good anti-aging and corrosion resistance properties, and has moderate durability and creep strength below 900°C. It is cold and Good hot processing formability and welding performance. It is used to manufacture combustion chamber components and other high-temperature components of aeroengines. It can be used under 900℃ for a long time and the short-term working temperature can reach 1080℃. The main varieties supplied are plates, strips, pipes, bars, forgings, rings and precision castings.
1. GH3536 Material grade: GH3536 (GH536, GH22, GH334, GH739, SG-5)
2. Similar grades of GH3536: UNS NO6002, HastelloyX (USA), NiCr22FeMo (Germany), Nimonic PE13 (UK).
3. GH3536 heat treatment system: plates and pipes: 1130~1170℃, rapid air cooling or water cooling; bar and ring inspection specimens: 1175℃±15℃, air cooling or faster cooling; strips: 1065~1105℃, rapid cooling cool down.
4. GH3536 variety specifications and supply status: supply plates with δ0.5~4.0mm, strips with δ0.05~0.8mm, pipes with outer diameter 4~20mm, wall thickness 1.0~2.0mm, diameter 0.2~10.0mm Welding wire, rods with a diameter of ≤300mm, rings of various diameters and wall thicknesses, and precision castings of different shapes and sizes. Plates, strips and pipes are supplied after solution treatment and pickling. Strips can also be supplied in cold-rolled state; welding wires are delivered in hard, semi-hard, solution and pickling, and bright solution treatment states. , can also be delivered in straight bars; bars and ring parts can be delivered without heat treatment. Precision castings are supplied in as-cast condition.
5. GH3536 smelting and casting process: electric arc furnace plus electroslag or non-vacuum induction furnace plus electroslag remelting process. To produce castings, an induction furnace is used to remelt the master alloy and then pour it into a heated mold shell. The pouring speed should be faster.
6. Application overview and special requirements of GH3536: This alloy has been widely used in foreign aerospace engines and civil industries. In my country, it is mainly used to manufacture combustion chamber components and other hot-end components as well as honeycomb structures. The alloy will undergo certain age hardening after long-term use at high temperatures.
