A high-performance non-sintered sliding board joint material and its preparation method

Abstract

The invention discloses a high-performance non-sintered sliding plate joint material and a preparation method thereof. The High-performance non-sintered sliding plate joint material is prepared from the following components in parts by weight: 40-65 parts of corundum, 6-12 parts of flake graphite, 1.2-3.8 parts of silane coupling agent, 15-28 parts of nano oxide powder, and 6-10 parts of aggregate. The preparation method of the high-performance non-sintered sliding plate joint material comprises the following steps: (1) dissolving the silane coupling agent in solvent water, carrying out ultrasonic treatment, adding to a high-speed dispersing machine together with the nano oxide powder, sufficiently stirring, filtering and standing in a sealing manner for later use; and (2) adding the corundum and the aggregate to the high-speed dispersing machine, stirring for mixing, adding the nano oxide powder treated in the step (1) and flake graphite to the high-speed dispersing machine, stirring for mixing and discharging. The high-performance non-sintered sliding plate joint material and the preparation method thereof have the advantages that the preparation process is simple, the product is high in volume density, low in porosity, and excellent in adhesion property, erosion resistance and mechanical property at a high temperature, and the bleeding and leaking phenomena are reduced.

Description

technical field [0001] The invention relates to the technical field of high-temperature materials and metallurgy, in particular to a high-performance non-sintered slide joint material and a preparation method thereof. Background technique [0002] With the development of the steelmaking industry, sliding nozzles have become one of the important innovative technologies in the steel industry. Now most of the ladles and tundishes at home and abroad are equipped with sliding nozzle systems. The slide plate is a key component of the sliding nozzle, an important part that directly controls the molten steel and determines the function of the sliding nozzle. During the use of the skateboard, it needs to withstand the chemical erosion and physical erosion of high-temperature molten steel for a long time, and it is subjected to intense and transient thermal shock and mechanical wear, so the service conditions are extremely harsh; The thickness and the size of the board are strictly r...

AI Technical Summary

Problems solved by technology

The disadvantages of this kind of joint material are: it is easy to shrink and crack under the action of temperature; it is not resistant to the erosion and erosion of molten steel, and it is prone to steel penetration and leakage during use, which affects production safety, and the maintenance frequency is high during use. It affects the service life of the ladle; in addition, it is not easy to dismantle when replacing the nozzle block, and it cannot be replaced quickly, which increases the labor intensity of the operator and affects the construction efficiency

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