Nickel-based alloy production and processing technology

Abstract

The invention discloses a nickel-based alloy production and processing technology which comprises the steps of material preparation, material mixing, primary vacuum melting, secondary vacuum melting, curing, casting molding, heat treatment and surface treatment, and finally the finished nickel-based alloy is obtained. In the aspect of raw materials, the nickel-based alloy disclosed by the invention is prepared by weighing and using the following raw materials in percentage: 28.22 percent to 25.57 percent of Cr, 17.51 percent to 15.36 percent of Mo, 15.74 percent to 13.61 percent of Cu, 10.82 percent to 9.21 percent of Fe, 9.88 percent to 7.25 percent of Al, 6.56 percent to 4.76 percent of Si, 5.86 percent to 3.58 percent of Ni, 3.47 percent to 1.85 percent of W, 3.24 percent to 2.45 percent of Nb, 0.83 percent to 0.68 percent of Ti and 0.35 percent to 0.22 percent of In. W and In are added, W is matched with Cr and Ni, so that the wear resistance and corrosion resistance of the alloy can be improved, In is high in plasticity and good in ductility, and the alloy can have high oxidation resistance, corrosion resistance and welding performance in the field of petrochemical engineering; and meanwhile, in the process, through two times of vacuum melting, the mixed raw materials are fully melted and mixed at different vacuum degrees and gradually heated, so that the stability of the meltability of the solution is ensured, the mixing uniformity is improved, and the local accumulation caused by non-uniform mixing of the raw materials and the reduction of the quality of the nickel-based alloy are reduced.

Description

technical field [0001] The invention belongs to the technical field of production of nickel-based alloys, and in particular relates to a production and processing technology of nickel-based alloys. Background technique [0002] Nickel-based alloys refer to a class of alloys that have comprehensive properties such as high strength and certain oxidation and corrosion resistance at high temperatures of 650-1000 °C. According to the main performance, it is subdivided into nickel-based heat-resistant alloys, nickel-based corrosion-resistant alloys, nickel-based wear-resistant alloys, nickel-based precision alloys and nickel-based shape memory alloys. According to the different substrates, superalloys are divided into: iron-based superalloys, nickel-based superalloys and cobalt-based superalloys. Among them, nickel-based superalloys are referred to as nickel-based alloys. [0003] At present, the use of nickel-based alloys has spread to the marine, environmental protection, ener...

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Problems solved by technology

[0005] The above-mentioned patent achieves high temperature and corrosion resistance by increasing the percentage of single carbon nanotubes and Ni, but its oxidation resistance is poor, the surface wear resistance is poor, and the surface wears and oxidizes severely under long-term use. One-time smelting, there is uneven melting and mixing of raw materials, and the structural stability of the nickel-based alloy components is uneven, which affects the quality and service life of the product

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