Heat treatment process of ceramic reinforced iron-based composite material
An iron-based composite material and process technology, applied in the field of composite materials, can solve problems such as difficulty in meeting the requirements of wear resistance of materials, and achieve the effect of improving wear resistance
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Embodiment 1
[0017] A heat treatment process for a ceramic reinforced iron-based composite material, the specific steps are as follows:
[0018] (1) Apply an anti-oxidation coating on the surface of the sample to be heat treated, then put it into a box furnace, vacuumize it, and fill it with nitrogen to ensure that the oxygen content is ≦5%, and the pressure in the furnace is stable at 60mbar;
[0019] (2) Heat up to 650°C at a heating rate of 30°C / h, hold for 0.5h, and then heat the sample to 930°C at a heating rate of 60°C / h.
[0020] (3) Insulate at 930°C for 3 hours, take out the sample and cool it in the air until room temperature;
[0021] (4) Tempering: Heat the sample at 20°C to 350°C for 1 hour and then cool in the furnace.
[0022] The structure diagram of the composite material after heat treatment in this embodiment is as follows figure 2 shown. After heat treatment, the carbides in the matrix are refined, the particles are well combined with the matrix, and there is no hea...
Embodiment 2
[0024] A heat treatment process for a ceramic reinforced iron-based composite material, the specific steps are as follows:
[0025] (1) Apply anti-oxidation paint on the surface of the sample to be heat treated, then put it into a box furnace, vacuumize, fill with nitrogen, ensure that the oxygen content is ≦5%, and the pressure in the furnace is stable at 65mbar;
[0026] (2) Heating to 650°C at a heating rate of 35°C / h, keeping the temperature for 1 hour, and then heating the sample to 980°C at a heating rate of 68°C / h.
[0027] (3) Insulate at 980°C for 3 hours, take out the sample and cool it in the air until room temperature;
[0028] (4) Tempering: Heat the sample at 25°C / h to 400°C for 1.5h and then cool in the furnace.
[0029] The performance test results of the composite material in this embodiment are shown in Table 1.
Embodiment 3
[0031] A heat treatment process for a ceramic reinforced iron-based composite material, the specific steps are as follows:
[0032] (1) Apply anti-oxidation paint on the surface of the sample to be heat treated, then put it into a box furnace, vacuumize it, fill it with nitrogen, ensure that the oxygen content is ≦5%, and the pressure in the furnace is stable at 70mbar;
[0033] (2) Heat up to 650°C at a heating rate of 45°C / h, hold for 0.8h, and then heat the sample to 1000°C at a heating rate of 75°C / h.
[0034] (3) Insulate at 1000°C for 5 hours, take out the sample and cool it in the air until room temperature;
[0035] (4) Tempering: Heat the sample at 30°C / h to 400°C for 1.8h and then cool in the furnace.
[0036] The performance test results of the composite material heat treated in this embodiment are shown in Table 1.
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