Three-segment vertical type magnesium alloy cast-rolling flow distributing device

Abstract

The invention discloses a three-segment vertical type magnesium alloy cast-rolling flow distributing device. The quality of a magnesium alloy cast-rolling board can be effectively improved. The device comprises a straight pipe type drainage apparatus, a porous type dispersed flow distributing device and an inclined plate type buffer. A cylindrical channel is adopted in the straight pipe type drainage apparatus, and a plurality of flow guide holes in different sizes are formed in the porous type dispersed flow distributing device in the direction of the width of a casting roller at different intervals, or a retaining dam is arranged at the bottom, or an inclined bottom face for distributing the flow of each hole averagely is arranged at the bottom; the straight pipe type drainage apparatus is connected with the bottom of a smelting furnace, the porous type dispersed flow distributing device is connected with the bottom of the straight pipe type drainage apparatus, and the inclined plate type buffer is connected with the bottom of the porous type dispersed flow distributing device; the straight pipe type drainage apparatus plays a role in drainage; the porous type dispersed flow distributing device plays a role in uniformly distributing magnesium liquid; and the inclined plate type buffer relieves the impact of the magnesium liquid to a smelting pool, and the effect of further uniform flow distributing is achieved.

Description

technical field [0001] The invention relates to the field of magnesium alloy vertical casting and rolling, in particular to a three-stage vertical magnesium alloy casting and rolling distribution device. Background technique [0002] Magnesium alloys have high specific strength, specific stiffness, vibration damping, electromagnetic shielding and radiation resistance, are easy to cut and process, and are widely used in automobiles, aviation, electronics and other industries. Casting is a traditional method for producing magnesium alloys, but its products have coarse grains, severe composition segregation, and low plasticity and corrosion resistance. After plastic deformation, magnesium alloy has higher strength and plasticity, but due to the close-packed hexagonal crystal structure of magnesium alloy, its processing performance is greatly affected, which restricts the application and development of deformed magnesium alloy. Twin-roll casting is a production process in which...

AI Technical Summary

Problems solved by technology

The problems existing in the existing flow distribution system are: when the liquid level of the molten pool fluctuates greatly, the thin metal strip will produce transverse cracks or cold shut; if the liquid level is too calm, it is easy to form crusting

Unreasonable flow distribution system leads to uneven distribution of molten magnesium liquid along the casting roll, uneven shape of cast rolling plate, uneven distribution of thickness and width along the direction of casting and rolling, and sometimes serious oxidation of the edge of cast rolling magnesium plate

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