CN211489549U - Improved aluminum-iron alloy continuous casting machine - Google Patents

Abstract

The utility model discloses a modified ferroaluminum alloy conticaster, including the frame, set up the ferroaluminum alloy mould on the frame top surface, the frame inner slope below the ferroaluminum alloy mould is setting up cold steel protection chute, and cold steel protection chute includes two angle steel, and two angle steel bottom intervals are evenly setting up the layer board, and the vertical limit of two angle steel constitutes the cold steel flange, and the level of two angle steel is bent fixedly between the limit top surface and is being set up a thickness for 16 mm's backplate, and the coating is setting up organosilicon antisticking agent layer on the backplate face, the frame lateral part of cold steel protection chute lower extreme setting up cold steel collecting hopper. The utility model discloses can prevent effectively that the cold steel that flows out from casting die's clearance from damaging shutdown accidents such as continuous casting machine chain piece, ensure production normal clear.

Description

Improved aluminum-iron alloy continuous casting machine

Technical Field

The utility model relates to a modified ferro-aluminum alloy conticaster.

Background

The aluminum is a deoxidizer used in steel-making production, the density of the pure aluminum is 2.7g/cm3, when the aluminum is added into a steel ladle for deoxidation, the aluminum must penetrate through steel slag, and the density of the steel slag is 4.3g/cm³Because the specific gravity of the aluminum is lighter than that of the steel slag, the aluminum is easy to float in the steel slag when added into the molten steel, the aim of deoxidizing the molten steel cannot be effectively fulfilled, and the consumption of the aluminum is large. Therefore, the steelmaking industry is changed toAn Al-Fe intermediate alloy (4.9 g/cm 3) containing about 40% Al was used as a final deoxidizer. The Al-Fe intermediate alloy has the advantages of good deoxidation effect, improved steel quality, reduced aluminum consumption and the like, and is particularly suitable for the deoxidation requirement of continuous casting molten steel. In the aluminum-iron alloy processing business for steelmaking production, the production mode is changed from the traditional intermediate frequency furnace smelting and manual casting into the traditional intermediate frequency furnace smelting and continuous casting by a continuous casting machine, and the continuous casting machine has the following problems in the continuous production process: the clearance between the cast iron dies is enlarged due to the fact that the chain sheets of the continuous casting machine expand when heated and are easy to stretch. In the continuous casting process of a continuous casting machine, along with the gradual rise of the temperature, high-temperature alloy liquid (with the temperature of about 1350 ℃) flows out from a gap between the lapping surfaces of two molds at the casting injection position, falls to the ground to generate high-temperature liquid splashing, and has larger potential safety hazard; high-temperature liquid flows out from the gap between the dies, and after cooling, a flash, namely cold steel, is formed and can be adhered to the lapping surface of the dies, so that the tension generated by mutual extrusion when the two dies are lapped stretches the chain sheet, the gap between the dies is enlarged, the outflow of the high-temperature liquid is increased, and vicious circle is formed; when the cold steel bonded on the overlapping surfaces of the molds is large enough, the mutual extrusion force between the two molds can cause the breakage of the chain sheet of the continuous casting machine or the mounting hole of the mold, equipment damage and shutdown accidents occur, and the production efficiency is seriously influenced.

Disclosure of Invention

An object of the utility model is to provide a modified ferro-aluminum alloy conticaster can prevent effectively that the shutdown accidents such as cold steel damage continuous casting machine chain piece from appearing flowing out in casting die's the clearance, ensures production normal clear.

The utility model aims at realizing like this, a modified aluminium-iron alloy conticaster, including the frame, be provided with aluminium-iron alloy mould, characterized by on the frame top surface: the cold steel protection chute is obliquely arranged in the frame below the aluminum-iron alloy mold and comprises two angle steels, the bottom of each angle steel is uniformly provided with a supporting plate at intervals, vertical edges of the two angle steels form a cold steel flange, a protective plate with the thickness of 16mm is fixedly arranged between the horizontal bending edge top surfaces of the two angle steels, two side edges of the protective plate are in clearance with the vertical edges of the angle steels, an organic silicon anti-sticking agent layer is arranged on the surface of the protective plate in a coating mode, and the frame side part of the lower end of the cold steel protection chute is provided with a cold steel collection hopper.

One =16mm steel sheet of oblique welding is done as the high temperature metal liquid guard plate below the casting position, through the leading-in special hopper of guard plate to high temperature liquid, thoroughly solved the high temperature metal liquid and fallen to splash, the cold steel problem on bonding the mould faying surface. Meanwhile, in actual production practice, the surface of the protection plate is coated with a layer of organic silicon anti-sticking agent, when high-temperature liquid falls on the protection steel plate, the high-temperature liquid is accelerated to solidify into cold steel, an operator shakes the protection plate, the cold steel can slide down, even under the condition of self gravity, the cold steel automatically slides down into the hopper, and the labor intensity of the operator for cleaning the cold steel is greatly reduced. In addition, the protection plate is further improved after being put into use: because the steel plate is locally heated, the steel plate is arched and deformed after being used for about 20 days, and the cold steel is influenced to slide down; secondly, because the protection plate is welded on the steel frame of the continuous casting machine, the frame is deformed due to the deformation tension of the protection plate. Therefore, the material of the guard plate is changed into Cr24Ni7Si2N heat-resistant steel casting, and the installation between the guard plate and the frame of the continuous casting machine is changed from welding to embedding in an angle steel square frame, so that the guard plate has stronger high-temperature oxidation resistance and deformation resistance at high temperature, and the service life can reach more than 1 year; meanwhile, the influence of the tensile force of the protection plate after the protection plate is heated and deformed on the frame of the connecting machine is also avoided.

The utility model discloses: 1. after the high-temperature metal liquid drops to the protection plate, the problem that the high-temperature metal liquid drops to the ground for splashing does not occur any more, and potential safety hazards are eliminated; 2. the phenomenon of breakage of the chain sheet or the die mounting hole of the aluminum-iron alloy continuous casting machine is reduced, and the equipment running rate and the production efficiency are improved; 3. the outflow amount of high-temperature molten metal from the gap between the two dies is greatly reduced, the amount of cast 1 ton of aluminum-iron alloy is reduced to about 3kg from the original 10-15kg of cold steel, and the product yield is improved by 1%; 4. the labor intensity of operators for cleaning cold steel is reduced.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic view of the cold steel protective chute of the present invention.

Detailed Description

The utility model provides a modified ferro-aluminum alloy conticaster, as shown in figure 1, figure 2, which comprises a frame, set up ferro-aluminum alloy mould 1 on the frame top surface, the slope is setting up cold steel protection chute 3 in the frame of ferro-aluminum alloy mould 1 below, cold steel protection chute 3 includes two angle steel 6, two angle steel 6 bottom intervals are evenly setting up layer board 7, the vertical limit of two angle steel 6 constitutes cold steel flange, the fixed backplate 31 that is 16mm of a thickness is setting up between the level of two angle steel the limit top surface of bending, backplate 31 both sides limit with the vertical limit of angle steel 6 between all leave the clearance, the coating is setting up organosilicon antisticking agent layer 8 on the backplate face, the frame lateral part of cold steel protection chute 3 lower extreme setting up cold steel collection hopper 5.

During the use, molten steel liquid drop 2 drops on chute 3, slides down along chute 3 rapidly, falls into in collecting hopper 5 and becomes cubic cold steel 4.

Claims (1)

1. The utility model provides a modified ferro-aluminum alloy conticaster, includes the frame, is setting up ferro-aluminum alloy mould on the frame top surface, characterized by: the cold steel protection chute is obliquely arranged in the frame below the aluminum-iron alloy mold and comprises two angle steels, the bottom of each angle steel is uniformly provided with a supporting plate at intervals, vertical edges of the two angle steels form a cold steel flange, a protective plate with the thickness of 16mm is fixedly arranged between the horizontal bending edge top surfaces of the two angle steels, two side edges of the protective plate are in clearance with the vertical edges of the angle steels, an organic silicon anti-sticking agent layer is arranged on the surface of the protective plate in a coating mode, and the frame side part of the lower end of the cold steel protection chute is provided with a cold steel collection hopper.

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