Combined magnesium alloy casting-rolling machine front box liquid supply device

Abstract

The invention discloses a combined magnesium alloy casting-rolling machine front box liquid supply device, and belongs to the field of rolling of magnesium alloys. The device comprises a combined box body, and adjusting device and a frame, wherein the combined box body is totally closed, and is injected with inert gas for protection; a liner can be singly taken out; a water inlet of a front box is formed in the lower part of the front side of the box body; an outlet of the front box is connected with a casting nozzle of a casting-rolling machine; the position adjusting device is used for position adjustment of the front box in a casting nozzle supply direction and a roller gap adjusting direction; the front box is connected with the frame as a whole; and the frame connects the integer formed by the combined box body and the adjusting device as a frame of the casting-rolling machine for adapting to change of various dip angles of the front box along with the casting-rolling machine. The device can satisfy the position adjustment of the front box along with different dip angles and different directions of the casting-rolling machine, improves the liquid level stability in the front box, and reduces the impurity quantity of metal casting liquid; and meanwhile, the front box is simple in structure and convenient to replace, reduces the labor intensity of workers, and improves the production efficiency.

Description

technical field [0001] The invention belongs to the field of magnesium alloy casting and rolling, and in particular relates to a liquid supply device for a front box of a combined magnesium alloy casting and rolling machine. [0002] technical background [0003] The liquid supply front box device of the magnesium alloy casting rolling mill is a key part of the casting rolling mill, which directly affects the casting rolling quality and product yield of the magnesium alloy casting rolling plate. At present, the structure of the front box of the magnesium alloy casting and rolling machine is simple, and the front box is mostly one-piece, or a multi-piece combination type that is inconvenient to disassemble. The front box is connected to the casting nozzle; The feedback signal of the surface height sensor is used to control the flow of molten magnesium by the lead plug flow control device at the bottom of the front box, so that the molten magnesium flows out from the nozzle sid...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the magnesium liquid in the open integral front box is often solidified after reaction in the front box, and the solidified magnesium alloy is difficult to remove, the front box needs to be replaced frequently, and a large amount of oxidized inclusions will be introduced at the same time, which will seriously affect the magnesium alloy. The quality of the cast-rolled plate, the one-piece front box is not only inconvenient to replace, but also costs a lot to replace, resulting in waste; while the multi-piece combined front box is cumbersome to disassemble and assemble, which seriously affects the work progress;

[0005] 2. During the injection process of the magnesium liquid above the front box, the liquid level fluctuates greatly, which will cause the pressure fluctuation of the nozzle, and will seriously affect the quality of the magnesium alloy cast-rolled plate;

[0006] 3. Since the inclination angle of the casting and rolling machine can be adjusted, and the gap size of the casting rolls will also change according to different product requirements, the existing head box device must ensure that the height of the casting mouth and the center of the roll gap can be compared. difficulty

According to the process requirements, the casting nozzle needs to be adjusted and replaced frequently. The spatial position of the front box and the casting and rolling machine is relatively fixed, and the casting nozzle has also been inserted into the roll gap, which makes it very inconvenient to replace the casting nozzle;

[0007] 4. There are insulation materials and heating resistance bands between the inner and outer shells of the existing front box. When the insulation materials and resistance bands are damaged, it is very inconvenient to repair and disassemble;

[0008] 5. The mechanism of the connecting rod in the traditional lead plug flow control device is complex and the swing range of the connecting rod is relatively large, which is not conducive to the overall sealing of the front box

Images