Nickel based high-temperature alloy powder are a type of metal material specially designed to withstand high temperature, high pressure, and corrosive environments, and are very suitable for use under extreme conditions. They are mainly composed of nickel, chromium, and iron, and elements such as molybdenum, cobalt, niobium, titanium, and aluminum are often added to enhance their performance.
Classification and common series of nickel based high-temperature alloys:
Solid solution reinforced nickel based high-temperature alloy:
Features: The solid solution strength and antioxidant properties are mainly improved by adding chromium and iron.
Example: Inconel 600 series, suitable for furnace racks, heat treatment equipment, etc.
Precipitation hardening nickel based high-temperature alloy:
Characteristic: This type of alloy enhances strength through the precipitation of a second phase such as gamma prime, and has excellent high-temperature strength.
Example: Inconel 718, containing titanium and aluminum, is mainly used in the aerospace industry.
Processing technology:
The processing technology of nickel based alloys includes traditional forging, casting, machining, and welding. Due to the complex strengthening mechanism of nickel based high-temperature alloys at high temperatures, processing often faces problems such as hardening, cracking, and tool wear. The welding of high-temperature alloys is particularly challenging, requiring specially designed welding materials and parameters.
Precision casting: Turbine blades are often manufactured through precision casting to maintain complex geometric shapes and high precision.
Application field:
Aerospace: turbine engine blades and discs, rocket engine components.
Energy industry: Internal structure of nuclear reactors, oil extraction equipment under high temperature and pressure.
Automotive industry: used to manufacture high-performance engine components, such as turbochargers.

Chemical and petrochemical industries: reactors, heat exchangers, and pipelines, especially those that require high temperature resistance and corrosion resistance.

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