Smelting process of nickel-based alloy containing aluminum, titanium, boron and zirconium
A nickel-based alloy, aluminum-titanium-boron technology, applied in the field of nickel-based alloy smelting process, can solve the problems of difficult control of the chemical composition of the alloy, affecting the overall performance of the alloy, and excessive addition at one time, so as to improve the durable performance and room temperature tensile strength. elongation, ensure alloy properties, and reduce segregation
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Embodiment 1
[0034] According to the standard of K418B alloy, it is produced by the vacuum smelting process of the present invention, its chemical composition is shown in Table 1, and its performance parameters are shown in Table 2.
[0035] Taking the 200Kg vacuum furnace as an example, the vacuum smelting process of the present invention is as follows:
[0036] (1) The first step of carbon deoxidation:
[0037] Graphite, which accounts for 50% of the total carbon content of the superalloy, is added to the vacuum furnace crucible, placed at the bottom of the crucible, and all elements in the superalloy except aluminum, titanium, boron, zirconium, and nickel are added to the vacuum furnace crucible Carry out smelting; graphite is the particle that is crushed to 2-5mm by the spectral graphite electrode; the smelting temperature is 1570±10°C, and the smelting time is 25 minutes;
[0038] (2) The second step of carbon deoxidation:
[0039] When the temperature rises to 1580±10°C, add the re...
Embodiment 2
[0056] According to the standard of K418B alloy, it is produced by the vacuum smelting process of the present invention, its chemical composition is shown in Table 3, and its performance parameters are shown in Table 4.
[0057] Taking the 200Kg vacuum furnace as an example, the vacuum smelting process of the present invention is as follows:
[0058] (1) The first step of carbon deoxidation:
[0059] Graphite, which accounts for 50% of the total carbon content of the superalloy, is added to the vacuum furnace crucible, placed at the bottom of the crucible, and all elements in the superalloy except aluminum, titanium, boron, zirconium, and nickel are added to the vacuum furnace crucible Carry out smelting; graphite is the particle that is crushed to 2-5mm by the spectral graphite electrode; the smelting temperature is 1580±10°C, and the smelting time is 20min;
[0060] (2) The second step of carbon deoxidation:
[0061] When the temperature rises to 1570±10°C, add the remaini...
Embodiment 3
[0078] According to the standard of K418B alloy, it is produced by the vacuum smelting process of the present invention, its chemical composition is shown in Table 5, and its performance parameters are shown in Table 6.
[0079] Taking the 200Kg vacuum furnace as an example, the vacuum smelting process of the present invention is as follows:
[0080] (1) The first step of carbon deoxidation:
[0081] Graphite, which accounts for 50% of the total carbon content of the superalloy, is added to the vacuum furnace crucible, placed at the bottom of the crucible, and all elements in the superalloy except aluminum, titanium, boron, zirconium, and nickel are added to the vacuum furnace crucible Carry out smelting; graphite is the particle that is crushed to 2-5mm by the spectral graphite electrode; the smelting temperature is 1560±10°C, and the smelting time is 30 minutes;
[0082] (2) The second step of carbon deoxidation:
[0083] When the temperature rises to 1590±10°C, add the re...
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