Magnesium alloy wide plate casting-rolling equipment

Abstract

The invention relates to a magnesium alloy wide plate casting-rolling machine, which is used for directly casting and rolling liquid magnesium alloy into a wide cast-rolled plate blank with the width of 800 to 1,800 millimeters. The casting-rolling machine is characterized in that the casting-rolling machine is a three-roll casting-rolling machine, has a pair of equal diameter double-drive rolls with the diameter of 800 to 1,200 millimeters and the same turning directions, namely an upper driving roll 1 and a lower driving roll 3, and has a driven roll 2 with the diameter of 200 to 600 millimeters, wherein the lower driving roll 3 and the driven roll 2 form a casting-rolling roll pair which has an internal water-cooled structure, the upper driving roll 1 is a supporting roll for the driven roll 2, and the plane of the axes of the three rolls is inclined towards one side of a casting nozzle; and the inclination angle is 0 to 15 degrees. The unequal diameter casting-rolling working rolls of the inclined three-roll casting-rolling machine have the advantages of a two-roll casting-rolling machine and a four-roll casting-rolling machine, can overcome the defects of the two-roll casting-rolling machine and the four-roll casting-rolling machine, and have the characteristics of high solidifying and cooling speed, high rolling pressure and good plate shape control. The three-roll casting-rolling machine casts and rolls the liquid magnesium alloy into a cast-rolled plate belt with the width of 800 to 1,800 millimeters and with large width, small deformation amount and good plate shape.

Description

technical field [0001] The present application relates to a magnesium alloy casting and rolling equipment, in particular to a three-roll casting and rolling equipment of a magnesium alloy wide thin slab. technical background [0002] The density of magnesium alloy is about 1 / 4 of steel, 2 / 3 of aluminum, similar to plastic, with high specific strength and specific stiffness, good thermal conductivity, good damping and shock absorption, excellent machining performance, stable size of parts and easy Recycling and other advantages, with excellent value and broad application prospects, it is known as "the most promising green engineering material in the 21st century". Magnesium alloys are now widely used in industries such as automobiles, aviation, aerospace, metallurgy, chemicals, communications, electronics and sporting goods. Especially since the early 1990s, increasingly urgent energy and environmental issues have greatly stimulated the development of magnesium alloys, and t...

AI Technical Summary

Problems solved by technology

The casting and rolling equipment of magnesium alloy wide sheet is very difficult, and the two-roll casting and rolling equipment and the four-roll casting and rolling equipment are not competent

The roll gap process of the casting rolls of the two-roll casting equipment is very long, especially when the thickness of the cast rolling plate is small, it is impossible to distribute the magnesium alloy liquid to the axial plane close to the rolls

If solidification is very thick in the rolling zone, the required rolling rate requires a large rolling force, which is difficult to achieve structurally, otherwise thicker rolls will be required, which in turn will further increase the length of the roll gap process

For example, the high-speed aluminum alloy four-roll casting and rolling equipment in the UK can overcome the above problems, but the structure of the casting and rolling equipment is complex, the cooling strength of the casting and rolling required for solidification cannot meet the requirements, and the quality of casting and rolling is also greatly restricted

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