A kind of anti-high temperature oxidation and wear-resistant cobalt-based alloy wire and its preparation method

Abstract

The invention discloses a high-temperature oxidation resistant wearproof Co-based alloy wire and a preparation method thereof. The high-temperature oxidation resistant wearproof Co-based alloy wire comprises the following ingredients: 13-17% of Cr, 11-15% of Ni, 10-14% of W, 2.4-4.3% of Mo, 1.2-1.6% of Al, 2.8-3.6% of Ti, 0.1-0.5% of Nb, 1.2-1.8% of Ta, 0.03-0.06% of Re, 0.01-0.05% of Ce, 0.02-0.1% of C, 0.005-0.015% of B, 0.02-0.07% of Zr and the balance of Co. The alloy preparation process route is vacuum melting-remelting-forging-hot rolling-drawing-solid solution treatment-aging treatment. Raw materials are compounded according to percentage by mass and then melted and re-melted; after that, forging and rolling are performed to obtain an alloy wire rod; multi-drawing is conducted to prepare an alloy wire of phi 0.06-0.4 mm; and finally, solid solution treatment and aging treatment are performed. Through reasonable ingredient control and adding of alloy elements, the alloy wire has high yield and excellent high-temperature wear resistance, high-temperature corrosion resistance, oxidation resistance and high strength. As a sealing brush wire material, the high-temperature oxidation resistant wearproof Co-based alloy wire has the advantages that the sealing effect can be effectively improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to a high-temperature oxidation-resistant and wear-resistant cobalt-based alloy wire and a preparation method thereof, belonging to the technical field of material processing. It is specifically used to manufacture brush filament materials with high temperature wear resistance, high temperature corrosion resistance, oxidation resistance and high strength. Background technique [0002] The brush seal is an air sealing device used in key parts of turbomachinery such as engines, steam turbines and steam engines. It is mainly composed of brush rings and corresponding matching runways. Among them, the brush ring is mainly composed of the front plate, the back plate and the dense brush wire clamped between the two with a diameter of about 0.06 ~ 0.3 mm. It is the best alternative structure for the air system grate seal. The most important material part of the type sealing device requires the brush filament to have good wear resistance,...

AI Technical Summary

Problems solved by technology

[0006] However, due to the unclear mechanism of action of alloying elements, the quality of products produced by the original single processing and preparation process is unstable, and the content of trace harmful elements cannot be effectively controlled. Excessive inclusions, coarse grains, and insufficient aging hardness lead to product qualification rate, poor material quality, and reduced reliability, which lead to corrosion and wear of alloy materials during use, which seriously affects the service life