Molten metal magnesium solution or molten magnesium alloy solution filtering material and filter

Abstract

The invention provides a molten metal magnesium solution or molten magnesium alloy solution filtering material and a filter. The filtering material is composed of magnesia ceramic particles and / or calcium oxide ceramic particles, and the diameter of the particles is within 1 to 50mm. The filter is as follows: the magnesia ceramic particles and / or the calcium oxide ceramic particles are uniformly filled in a container made of high-chrome steel or low-carbon steel, the diameter of the particles is within 1 to 50mm, the container is respectively provided with an inlet and an outlet, and baffles used for covering the inlet and the outlet are respectively arranged at the positions of the inlet and the outlet. The filter is arranged on a conveying pipeline in equipment for preparing metal magnesium or magnesium alloy, or is arranged on a delivery pump inlet or a pouring outlet in smelting equipment for preparing metal magnesium or magnesium alloy. The filter can exert the functions of absorbing and blocking on impurities such as magnesia, solvent and the like in molten metal magnesium solution or molten magnesium alloy solution, so as to purify the molten metal magnesium solution or the molten magnesium alloy solution.

Description

technical field [0001] The invention relates to a filter material and a filter for metal magnesium melt or magnesium alloy melt. Background technique [0002] Magnesium alloy has very significant advantages in many occasions due to its low density (it is the smallest density among practical structural metals). Especially in aviation, aerospace, and automobiles, motorcycles, high-speed / light rail trains and other transportation vehicles, it has irreplaceable advantages. The low density of the components can save energy, and it also has the advantage of small inertia in the case of high-speed movement, which has a significant effect on the starting and braking of vehicles. [0003] But metal magnesium inevitably undergoes oxidative combustion during the melting process, and the generated inclusions such as magnesium oxide are dispersed and suspended in the magnesium liquid. Production practice has proved that if these inclusions are not completely removed, the mechanical pro...

AI Technical Summary

Problems solved by technology

However, since the encounter and adsorption of refining agent droplets and inclusions is a random phenomenon in the refining and stirring operation, it is impossible to completely remove the inclusions even under the correct conditions of refining process parameters and operation. Lead to excessive content of inclusions and flux, which significantly reduces the mechanical properties and corrosion resistance of magnesium alloys

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