High purity smelting method for nickel-based high-temperature alloy
A technology of nickel-based superalloy and smelting method, which is applied in the direction of improving energy efficiency and process efficiency, and can solve the problems of lowering refining temperature, shortening refining time, and poor desulfurization effect, so as to reduce refining temperature and shorten refining time , the effect of short refining time
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[0030] Example 1
[0031] The ingredients of this example are shown in Table 1
[0032] Table 1
[0033]
[0034] The first step: alloy melting
[0035] (1) Furnace installation
[0036] In a water-cooled copper crucible, from bottom to top, 40% Ni, all Co, all Re, all C, all Mo, all W, all Cr, all Ta, all Hf and 30% Ni are sequentially charged.
[0037] (2) Alloy melting
[0038] The vacuum induction melting furnace is used for melting, when the vacuum degree of the vacuum induction melting furnace reaches 1×10 -2 When P a, the attached gas is removed by low-power heating; when the vacuum degree reaches 5×10 -3 At Pa, pass high-purity argon to 0.1 MPa, and quickly heat up at a heating rate of 60°C / s until the charge is completely melted and then cooled with the furnace.
[0039] Step 2: Refining the alloy
[0040] (1) Furnace installation
[0041] The first step smelted alloy ingot, Al-Y master alloy, and Ni-B master alloy are respectively put into a water-cooled copper crucible in sequence...
Example Embodiment
[0051] Example 2
[0052] The ingredients of this example are shown in Table 5.
[0053] table 5
[0054]
[0055] The first step: alloy melting
[0056] (1) Furnace installation
[0057] In a water-cooled copper crucible from bottom to top, 50% Ni, all Co, all C, all Mo, all W, all Cr, all Ta, all Hf and 20% Ni are sequentially charged.
[0058] (2) Alloy melting
[0059] The vacuum induction melting furnace is used for melting, when the vacuum degree of the vacuum induction melting furnace reaches 1×10 -2 When P a, the attached gas is removed by low-power heating; when the vacuum degree reaches 5×10 -3 At Pa, pass high-purity argon to 0.1 MPa, and rapidly heat up at a heating rate of 60°C / s until the charge is completely melted and then cooled with the furnace.
[0060] Step 2: Refining the alloy
[0061] (1) Furnace installation
[0062] The first step alloy ingot, Al-Y master alloy, and Ni-B master alloy are respectively put into the water-cooled copper crucible in sequence.
[0063] (2) ...
Example Embodiment
[0070] Example 3
[0071] Use the same alloy composition as in Example 2
[0072] The first step: alloy melting
[0073] (1) Furnace installation
[0074] In the water-cooled copper crucible, from bottom to top, 50% Ni, all Co, all C, all Mo, all W, all Cr, all Ta, all Hf and 20% Ni are sequentially charged.
[0075] (2) Alloy melting
[0076] Use a vacuum induction melting furnace for melting, when the vacuum of the vacuum induction melting furnace reaches 1×10 -2 At Pa, the attached gas is removed by low-power heating, when the vacuum degree reaches 5×10 -3 At Pa, pass high-purity argon to 0.1 MPa, and quickly heat up at a heating rate of 60°C / s until the charge is completely melted and then cooled with the furnace.
[0077] Step 2: Refining the alloy
[0078] (1) Furnace installation
[0079] The first step alloy ingot, Al-Y master alloy, and Ni-B master alloy are respectively put into the water-cooled copper crucible in sequence.
[0080] (2) Alloy refining
[0081] Refining by high-frequ...
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