Method for preparing nickel-based high-temperature alloy
A nickel-based superalloy and alloying technology, which is applied in the direction of improving energy efficiency and process efficiency, can solve the problems of low thermal processing performance of alloys, difficult to melt in a short time, and separate W-based alloys, and achieve good oxidation resistance. , The melting parameters are easy to control and the effect of shortening the melting time
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[0024] Example 1
[0025] The preparation method of NS111 nickel-based superalloy comprises the following process steps:
[0026] The proportions of NS111 nickel-based superalloy in this embodiment are as follows:
[0027] Ni: 35%; Cr: 23%; Fe: 40%; Cu: 0.5%; Mn: 1%; C: 0.05%; Si: 0.5%; S: 0.01%; Al: 0.3%; Ti: 0.3%.
[0028] ①Material preparation: According to the ratio of NS111 alloy, the alloying element metal raw materials Cr and Ti are added to the feeding funnel, and the remaining element metal raw materials are placed in the water-cooled copper crucible of the electron beam melting furnace according to the ratio. During the whole preparation process, keep the water cooling The temperature of the copper crucible was 200°C.
[0029] ②Preheating: close the door of the electron beam melting furnace, turn on the mechanical pump, roots pump and diffusion pump in turn, so that the vacuum degree in the electron beam melting furnace is less than 5×10 -2 Pa, the vacuum degree o...
Example Embodiment
[0034] Example 2
[0035] The preparation method of NS142 nickel-based superalloy comprises the following process steps:
[0036] The proportions of NS142 nickel-based superalloy in this embodiment are as follows:
[0037] Ni: 46%; Cr: 23.5%; Fe: 0.05%; C: 1%; Mn: 0.5%; Si: 3%; Cu: 3.5%; Mo: 0.2%; Al: 1.2%; Ti: 1.2%; P: 0.02%; S: 0.03%;.
[0038] ①Material preparation: According to the ratio of NS142 alloy, the alloying element metal raw materials Cr, Mo and Ti are added to the feeding funnel, and the remaining element metal raw materials are placed in the water-cooled copper crucible of the electron beam melting furnace according to the ratio. Keep the temperature of the water-cooled copper crucible at 200°C
[0039] ②Preheating: close the door of the electron beam melting furnace, turn on the mechanical pump, roots pump and diffusion pump in turn, so that the vacuum degree in the electron beam melting furnace is less than 5×10 -2 Pa, the vacuum degree of the electron gun...
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