CN216502316U - High-efficiency deoxidation table aluminum intermittent type lifting and pouring device for steelmaking - Google Patents

Abstract

The aluminum intermittent lifting casting device for the high-efficiency deoxidation table for steelmaking comprises a conveying chain type casting line (1), a grid-shaped mold (2) arranged on the casting line and moving forward along the conveying chain, a flow-dividing casting nozzle (10) arranged above the casting line, an induction device arranged on one side of the casting line and a demolding mechanism arranged at the rear end of the casting line. The utility model adopts electrolytic aluminum liquid to directly cast and produce, and has the advantages of short process flow, high production efficiency, simple and convenient operation, less energy consumption, easy maintenance of production equipment and devices, low labor intensity and the like.

Description

High-efficiency deoxidation table aluminum intermittent type lifting and pouring device for steelmaking

Technical Field

The utility model relates to the technical field of high-efficiency deoxidation table aluminum production equipment for steelmaking.

Background

Oxygen in steel can generate great harm to the performance of the steel, and the harm of non-metallic inclusion, bubble formation and sulfur aggravation are mainly expressed by combining the oxygen with other elements in the steel, so that the hot brittleness tendency of the steel is more serious, and the like, and therefore, deoxidation is required in the steelmaking process. Different deoxidizers have different influences on the performance of steel, aluminum is a strong deoxidizer, and when residual aluminum in the steel reaches a certain proportion, the possibility of forming CO bubbles in the steel is eliminated, so that a steel ingot (blank) with a compact structure is obtained. Therefore, aluminum is often used as a final deoxidizer, and its deoxidizing ability increases with a decrease in temperature and an increase in slag basicity. In addition, the proper amount of aluminum added into the steel can form stable AlN with the nitrogen in the steel₃Preventing the generation of iron nitride, thereby reducing the aging tendency of the steel; meanwhile, when aluminum is used for deoxidation, a plurality of fine and highly dispersed AlN can be generated in the molten steel₃And Al₂O₃These fine solid particles can become the core of the crystal grains when the molten steel is crystallized, and the crystal grains are refined. Under the current steelmaking development trend of 'energy conservation, emission reduction and environmental protection', the aluminum deoxidizer is popularized and used as a novel steelmaking deoxidizer, so that not only can the economic benefit be increased, but also the steelmaking cost can be reduced.

At present, most steel plants adopt cylindrical aluminum particles for deoxidation, and the deoxidation particles have the technical problems of complex preparation process, high energy consumption, high production cost, easy oxidation in the use process and the like. Therefore, the development of equipment for producing the low-carbon high-efficiency deoxidized aluminum alloy for steelmaking, which has the advantages of short process flow, high production efficiency, simple and convenient operation and low energy consumption, is the urgent need for solving the existing technical problems.

Disclosure of Invention

The utility model mainly aims to provide production equipment of low-carbon high-efficiency deoxidizing table aluminum for steelmaking, and aims to solve the technical problems of complex preparation process, high energy consumption, high production cost, easy oxidation in the using process and the like in the existing production of aluminum deoxidizing particles.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the aluminum intermittent lifting casting device for the high-efficiency deoxidizing table for steelmaking comprises a conveying chain type casting line, a grid-shaped mold, a shunt casting nozzle, an induction device and a demolding mechanism, wherein the grid-shaped mold is arranged on the casting line and moves forward along the conveying chain; the split-flow casting nozzle is a flat strip-shaped casting nozzle and is connected with a liquid outlet of the smelting furnace through a drainage groove, the bottom of the split-flow casting nozzle is provided with a group of V-shaped split-flow grooves which are arranged in parallel and arranged along the conveying direction of a casting line, and two sides of the split-flow casting nozzle are arranged on supports positioned at two sides of the casting line through first connecting shafts integrated with the split-flow casting nozzle; a cylinder with a downward push rod is arranged outside the bracket on one side, the push rod of the cylinder is connected with the outer end of the first connecting shaft through a connecting rod, the first connecting shaft is pushed to rotate through the extension and contraction of the push rod of the cylinder, and the shunting casting nozzle is adjusted to be in a horizontal or inclined state; the induction device comprises a fixed base arranged on the side edge of the casting line, a support arm arranged on the fixed base, and a position inductor which is arranged on the support arm and positioned above the mold and can induce the running track of the mold, wherein the position inductor is electrically connected with a control system of the cylinder through a lead; when the grid-shaped mold is filled with aluminum liquid, the control system of the air cylinder controls the push rod of the air cylinder to recover, so that the shunting casting nozzle is in a horizontal state, when the conveying chain drives the grid-shaped mold to move forwards to pass through the position sensor, the position sensor receives a signal and transmits the signal to the air cylinder control system, the air cylinder is started to drive the first connecting shaft to rotate downwards, the shunting casting nozzle connected with the first connecting shaft is inclined downwards, the aluminum liquid flows into the cavities of the next group of grid-shaped molds, and the aluminum liquid in the cavities is gradually cooled and solidified in the forward moving process of the conveying chain;

the demolding mechanism comprises a second connecting shaft, a demolding hammer head and transmission blades, wherein the second connecting shaft is arranged above the support and positioned at the tail end of the conveying chain, the demolding hammer head is fixedly arranged on the second connecting shaft through a hammer arm, the transmission blades are fixedly arranged on the second connecting shaft and are spaced from the hammer arm and are arranged along different angles, when grid-shaped molds on the conveying chain run to be in contact with the transmission blades, the transmission blades are pushed, so that the second connecting shaft is driven to rotate, the demolding hammer head is driven to lift upwards, when the conveying chain continues to run, and the transmission blades are positioned in a gap between two sets of grid-shaped molds, the demolding hammer head falls and hammers on the grid-shaped molds by means of gravity, so that aluminum alloy blocks formed in the molds are vibrated to fall off, one-time demolding action is completed, and low-carbon and high-efficiency deoxidized aluminum alloy particles are obtained.

Further, a screening grid plate which is obliquely arranged is arranged below the demoulding mechanism and below the conveying chain; and (3) after the unqualified products are screened by the aluminum alloy block falling and screening grid plate demoulded from the die, the qualified products fall into a material box, and the low-carbon high-efficiency deoxidized aluminum alloy particles are obtained.

Compared with the prior art, the utility model has the following remarkable advantages:

(1) according to the utility model, the grid-shaped die and the shunting pouring nozzle can be used for directly casting to obtain smaller aluminum alloy particles, the size is small, the deoxidation efficiency is high, oxygen in molten steel can be removed to the maximum extent, and the steel performance is improved;

(2) the method for producing the aluminum alloy particles is simple and efficient, and can realize small-batch, multi-specification and multi-size customized production according to actual requirements;

(3) the production process is controlled without manual intervention, all qualified products and unqualified products are automatically sorted by mechanical equipment, the problem that the unqualified products are mixed into the qualified products due to human factors is solved, the quality control is more strict and efficient, and the stable quality of the products can be ensured;

(4) the utility model adopts electrolytic aluminum liquid for direct casting production, and has the advantages of short process flow, high production efficiency, simple and convenient operation, low energy consumption, easy maintenance of production equipment and devices, low labor intensity and the like.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the arrangement of the tapping spout and the induction device of FIG. 1;

fig. 3 is a left side view of the ejector mechanism of fig. 1 mounted to the rear end of the casting line.

Detailed Description

The utility model is further explained by the accompanying drawings.

The intermittent aluminum-lifting casting device for the high-efficiency deoxidizing table for steelmaking as shown in fig. 1, 2 and 3 comprises a conveying chain type casting line 1, a grid-shaped mold 2 arranged on the casting line and moving forward along a conveying chain, a split-flow casting nozzle 10 arranged above the casting line, an induction device arranged on one side of the casting line and a demolding mechanism arranged at the rear end of the casting line. The grid-shaped moulds 2 are sequentially arranged on the conveying chain one by one, and a section of interval is reserved between every two adjacent groups of moulds.

The shunting casting nozzle 10 is a flat strip-shaped casting nozzle and is connected with a liquid outlet of a smelting furnace through a drainage groove 16, the bottom of the shunting casting nozzle is provided with a group of V-shaped shunting grooves 11 which are arranged in parallel and are arranged along the conveying direction of a casting line, and two sides of the shunting casting nozzle are arranged on supports 8 positioned on two sides of the casting line through first connecting shafts 6 integrated with the shunting casting nozzle. A cylinder 7 with a downward push rod is arranged outside the support on one side, the push rod of the cylinder is connected with the outer end of the first connecting shaft 6 through a connecting rod 9, the first connecting shaft 6 is pushed to swing up and down through the stretching of the push rod of the cylinder, and the shunting casting nozzle 10 is adjusted to be in a horizontal or inclined state.

The induction device comprises a fixed base 4 arranged on the side edge of the casting line, a support arm 5 arranged on the fixed base, and a position sensor 3 which is arranged on the support arm and positioned above the mold and can induce the running track of the mold, wherein the position sensor is electrically connected with a control system of the cylinder 7 through a lead.

When the grid-shaped mold 2 is full of aluminum liquid, the control system of the air cylinder controls the push rod of the air cylinder to recover, so that the shunting casting nozzle 10 is in a horizontal state, when the conveying chain drives the grid-shaped mold 2 to move forwards to pass through the position sensor 3, the position sensor receives a signal and transmits the signal to the air cylinder control system, the air cylinder is started to drive the first connecting shaft 6 to rotate downwards, so that the shunting casting nozzle 10 connected with the first connecting shaft is inclined downwards, the aluminum liquid flows into the cavities of the next group of grid-shaped molds 2, and the aluminum liquid in the cavities is gradually cooled and solidified in the process of forward movement of the conveying chain.

The demoulding mechanism comprises a rotatable second connecting shaft 13 which is arranged above the bracket and is positioned at the tail end of the conveying chain, a demoulding hammer head 15 fixedly arranged on the second connecting shaft through a hammer arm, and a transmission blade 12 fixedly arranged on the second connecting shaft, spaced with the hammer arm and arranged along different angles. The hammer arm and the transmission blade 12 can rotate by taking the second connecting shaft 13 as a rotating shaft, the hammer arm and the transmission blade are arranged in a staggered angle mode, and an included angle is formed between the hammer arm and the transmission blade. When the grid-shaped molds 2 on the conveying chain run to be in contact with the transmission blades 12, the transmission blades 12 are pushed, so that the second connecting shaft 13 is driven to rotate, the demolding hammers 15 are driven to lift upwards, when the conveying chain continues to run, and the transmission blades are positioned in the gap between the two sets of grid-shaped molds 2, the demolding hammers 15 fall and hammer on the grid-shaped molds by means of self-gravity, so that aluminum alloy blocks formed in the molds are vibrated to fall off, one-time demolding action is completed, and low-carbon high-efficiency deoxidized aluminum alloy particles are obtained. And a screening grid plate 14 which is obliquely arranged is arranged below the conveying chain below the demoulding mechanism, and after unqualified products are screened by the screening grid plate falling from the aluminum alloy blocks demoulded in the mould, the qualified products fall into a bin, so that low-carbon high-efficiency deoxidized aluminum alloy particles are obtained.

And hoisting the material box filled with the low-carbon high-efficiency deoxidized aluminum alloy particles to a vibrating screen machine for screening, packaging the qualified low-carbon high-efficiency deoxidized aluminum alloy particles for storage, and returning unqualified products as cold materials to the furnace. The vibrating screen machine is only required to be provided with the equipment in the prior art.

Claims (2)

1. The aluminum intermittent type lifting pouring device of the efficient deoxidizing table for steelmaking is characterized by comprising a conveying chain type casting line (1), a grid-shaped mold (2) arranged on the casting line and moving forward along a conveying chain, a shunting casting nozzle (10) arranged above the casting line, an induction device arranged on one side of the casting line and a demolding mechanism arranged at the rear end of the casting line; the split-flow casting nozzle is a flat strip-shaped casting nozzle and is connected with a liquid outlet of a smelting furnace through a drainage groove (16), the bottom of the split-flow casting nozzle is provided with a group of V-shaped split-flow grooves (11) which are arranged in parallel and arranged along the conveying direction of a casting line, and two sides of the split-flow casting nozzle are arranged on brackets (8) positioned on two sides of the casting line through first connecting shafts (6) integrated with the split-flow casting nozzle; a cylinder (7) with a downward push rod is arranged outside the bracket on one side, the push rod of the cylinder is connected with the outer end of the first connecting shaft (6) through a connecting rod (9), the first connecting shaft (6) is pushed to swing up and down through the extension and contraction of the push rod of the cylinder, and the shunting casting nozzle (10) is adjusted to be in a horizontal or inclined state; the induction device comprises a fixed base (4) arranged on the side edge of the casting line, a support arm (5) arranged on the fixed base, and a position inductor (3) which is arranged on the support arm and positioned above the mold and can induce the running track of the mold, wherein the position inductor is electrically connected with a control system of the cylinder (7) through a lead; when the grid-shaped mold (2) is filled with aluminum liquid, the control system of the air cylinder controls the push rod of the air cylinder to recover, so that the shunt casting nozzle (10) is in a horizontal state, when the conveying chain drives the grid-shaped mold (2) to move forwards to pass through the position sensor (3), the position sensor receives a signal and transmits the signal to the air cylinder control system, the air cylinder is started to drive the first connecting shaft (6) to rotate downwards, so that the shunt casting nozzle (10) connected with the first connecting shaft is inclined downwards, the aluminum liquid flows into a cavity of the next grid-shaped mold (2), and the aluminum liquid in the cavity is gradually cooled and solidified in the forward moving process of the conveying chain;

the demoulding mechanism comprises a second connecting shaft (13) which is arranged above the bracket and positioned at the tail end of the conveying chain, a demoulding hammer head (15) which is fixedly arranged on the second connecting shaft through a hammer arm, and transmission blades (12) which are fixedly arranged on the second connecting shaft and are arranged at intervals with the hammer arm and along different angles, when the grid-shaped mould (2) on the conveying chain runs to be contacted with the transmission blade (12), the transmission blade (12) is pushed to drive the second connecting shaft (13) to rotate, further drives the demoulding hammer head (15) to lift upwards, when the conveying chain continues to run and the transmission blade is positioned in the gap between the two groups of grid-shaped moulds (2), the demoulding hammer head (15) falls and hammered on the grid-shaped mould (2) by means of self gravity, so that the aluminum alloy block formed in the mould is vibrated to fall off, one-time demoulding action is completed, and low-carbon high-efficiency deoxidized aluminum alloy particles are obtained.

2. The intermittent aluminum-lifting casting device for the efficient deoxidizing table for steelmaking as set forth in claim 1, wherein a screening grid plate (14) is obliquely arranged below the stripping mechanism and below the conveying chain; and (3) after the unqualified products are screened by the aluminum alloy block falling and screening grid plate demoulded from the die, the qualified products fall into a material box, and the low-carbon high-efficiency deoxidized aluminum alloy particles are obtained.

Images