NCF800 (Incoloy 800) is a superalloy that often requires proper heat treatment during use to optimize its properties. The following is the heat treatment process of NCF800 in general:
1.Solution annealing: NCF800 is heated to a temperature range of about 1095°C - 1150°C for solution treatment to dissolve the solution elements in the alloy and hold for a certain amount of time to ensure that the elements are fully dissolved. This is followed by rapid cooling, usually by water quenching or air cooling.
2.Quenching: After solution treatment, rapid cooling, such as water quenching, is required to ensure that the dissolved elements in the alloy remain in the grains and to improve the strength and hardness of the alloy.
3.Tempering: After solution treatment and precipitation quenching, tempering is sometimes required to reduce the brittleness of the alloy and improve its toughness. The tempering temperature is usually between 700°C - 800°C, and it is held for a certain period of time before cooling.
Heat treatment process for NCF800:
1.Solution annealing: NCF800 is heated to a temperature range of about 1095°C - 1150°C for solution treatment to dissolve the solution elements in the alloy and hold for a certain amount of time to ensure that the elements are fully dissolved. This is followed by rapid cooling, usually by water quenching or air cooling.
2.Quenching: After solution treatment, rapid cooling, such as water quenching, is required to ensure that the dissolved elements in the alloy remain in the grains and to improve the strength and hardness of the alloy.
3.Tempering: After solution treatment and precipitation quenching, tempering is sometimes required to reduce the brittleness of the alloy and improve its toughness. The tempering temperature is usually between 700°C - 800°C, and it is held for a certain period of time before cooling.
Through the above heat treatment process, the grain structure and internal stresses of NCF800 can be adjusted to improve its strength, hardness and heat resistance. The most suitable heat treatment process needs to be determined based on the specific engineering requirements and application conditions, as well as the heat treatment specifications provided by the material manufacturer.
NCF800 is a Japanese steel grade, equivalent to the international standard Incoloy 800 (UNS N08800), and is a nickel-iron-based alloy whose main chemical components include:
1.Nickel: One of the main components, usually in the range of 30% -35%, which gives the alloy good corrosion resistance and high-temperature properties.
2.Iron (iron): As one of the basic components, it ensures the crystal structure and mechanical properties of the alloy.
3.Chromium: Typically in the range of 19%-23%, it provides good oxidation and corrosion resistance to the alloy.
4.Aluminum: Typically at 015% -0.60%, which helps to improve the high-temperature strength and oxidation resistance of the alloy.
5.Copper: Typically at 015% -0.60%, helping to improve the corrosion resistance and mechanical properties of the alloy.
6.Carbon: Usually in low amounts, it helps to control the carbonization of grain boundaries during the heat treatment of alloys.
7.Titanium: Usually in the range of 015% -0.60%, helping to improve the corrosion resistance of the alloy.
As a superalloy, NCF800 (Incoloy 800) has a wide range of applications in the industrial field, and its main uses include but are not limited to the following:
1.Petrochemical industry: NCF800 can be used to manufacture high-temperature and high-pressure pipes, pipe fittings, heat exchangers, reactors and heaters and other components in petrochemical equipment, with excellent heat resistance and corrosion resistance.
2.Nuclear power industry: NCF800 can be used in nuclear reactor pressure vessels, piping systems, heat exchangers and other key components in nuclear power plants, with good high temperature strength and radiation resistance.
3.High temperature heat treatment industry: NCF800 can be used in heating elements, stoves, annealing furnaces, heat treatment furnaces, etc. in high temperature heat treatment equipment, and can withstand stress and corrosion in high temperature environments.
4.Chemical industry: NCF800 can be used in reactors, distillation columns, heaters, heat exchangers, etc. in chemical equipment, with good corrosion resistance and high temperature strength, suitable for a variety of corrosive media.
5.Gas turbine field: NCF800 can be used for gas turbine components, such as gas turbine blades, bearings, seals, etc., which can withstand stress and wear under high temperature and high pressure conditions.
Overall, NCF800 superalloy is highly qualified due to its excellent quality.
Temperature strength, corrosion resistance and plasticity are widely used in industrial fields that need to withstand high temperature, high pressure, corrosion and other harsh working conditions, and play an important role in improving the reliability and service life of equipment.