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Heat resistant steel castings furnace beam 1.4865
Main use of the furnace beam
1. Industrial high-temperature furnace / smelting furnace
Metallurgical industry: used to support the furnace refractory materials or bearing molten metal containers (such as ladle, crucible), common in electric arc furnace, induction furnace and other equipment.
Heat treatment industry: in the quenching furnace, annealing furnace, the furnace beam is used for hanging or fixed workpiece (such as automotive parts, mechanical parts), to ensure the stability of high temperature treatment.
2. Boiler and energy equipment
Power station boiler: the steel structure beam supporting the water wall and superheater tube bundle needs to withstand high temperature and high pressure environment.
Biomass / waste incinerator: used for fixed grate or high temperature resistant grille to support fuel combustion and resist corrosive gases (such as chloride, sulfide).
Material: 1.4865
Chinese name: 1.4865 heat-resistant cast steel
Foreign language name: GX40NiCrSi38-18 / 19
Implementation standard: DIN 17465-1993
Characteristics: high temperature resistance, corrosion resistance, good mechanical properties
chemical composition
The chemical composition of 1.4865 is as follows:
Carbon (C): 0.30-0.50%
Silicon (Si): 1.00-2.50%
Manganese (Mn): 2.00%
Phosphorus (P): 0.040%
Sulfur (S): 0.030%
Chromium (Cr): 17.00-19.00%
Nickel (Ni): 36.00-39.00%
Molybdenum (Mo): 0.50%
physical property
Density: approximately 7.85 g / cm³
Range of melting point: 1297 C-1842 C
Thermal conductivity: there are different values at different temperatures, such as 16.0 W / mK at 20 C
Specific heat capacity: 0.50 J / gK at 20 C
Line expansion coefficient: 11-18.5 10 ⁶ / K between 20 C and 1000 C
mechanical property
Yield strength: 119 MPa
Tensile strength: 186 MPa
Extended extension rate: 24%
Section shrinkage rate: 31%
Hardness: about 333 HBW
Heat treatment process
Heat treatment of 1.4865 usually includes:
Solid solution treatment: Heat to 1100-1200 C for some time, then cool quickly for optimal mechanical properties and corrosion resistance.
application area
1.4865 is widely used in:
Chemical industry: used for manufacturing chemical containers, reactors, heat exchangers, etc.
Energy field: in the oil, natural gas and other energy fields, used in high temperature furnace pipe, kiln, heat exchanger and other equipment.
Aerospace: suitable for making high temperature components of aviation engines, such as turbine blades, combustion chambers, etc.
3. Chemical industry and ceramic industry
Chemical reactor: In a cracking furnace or a catalytic reactor, the furnace beam may be used to separate the reaction zone or support the catalyst bed.
Ceramic kiln: as the support structure of kiln car track or burning plate, it needs to withstand long-term high temperature (above 1200 C).
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