CN114643351B - Steel ladle for cleaning and transferring residual slag of weathering resistant steel liquid steel - Google Patents

Abstract

The invention relates to the technical field of iron and steel metallurgy, and proposes a slag cleaning transfer ladle for weathering steel liquid steel, comprising a ladle shell, a permanent layer arranged in the ladle shell, and an impact-resistant layer arranged on the surface of the permanent layer sequentially from bottom to top , molten pool layer, slag line layer and cladding layer, impact-resistant layer, slag line layer and cladding layer all adopt modular masonry structure, impact-resistant layer, slag line layer and cladding layer all include structural blocks and fixed Block, the second slope of the fixed block presses the first slope of the structural block to make the structural block close to the permanent layer, and the disassembly and assembly components include structural steel plates arranged on the structural blocks and the fixed blocks, and the structural steel plates are arranged on the The structural block and the fixed block are close to the side of the permanent layer, the connecting rod passes through the permanent layer and the steel cladding, and the locking piece is arranged on the end of the connecting rod extending out of the steel cladding. The above technical solution solves the problem of inaccurate composition of weathering steel caused by residual slag in the ladle and thus affecting its performance in the prior art during the smelting process of weathering steel.

Description

A kind of residual slag cleaning transfer ladle of weathering steel liquid steel

technical field

The invention relates to the technical field of iron and steel metallurgy, in particular to a ladle for cleaning and transferring residual slag of weathering steel liquid steel.

Background technique

Weathering steel is made of ordinary carbon steel with a small amount of corrosion-resistant elements such as copper and nickel added. 8 times, the paintability is 1.5~10 times that of ordinary carbon steel, which can be used in thinning, bare or simplified painting. The steel has the characteristics of rust resistance, corrosion resistance and longevity of components, thinning and consumption reduction, labor saving and energy saving, which benefit component manufacturers and users. Weathering steel products are used to manufacture structural parts such as containers, railway vehicles, oil derricks, seaport buildings, oil production platforms, and containers containing hydrogen sulfide corrosive media in chemical and petroleum equipment.

In the existing technology, compared with foreign weathering steel, there is still a certain gap in the development of weathering steel in my country. On the one hand, in the production process of weathering steel in my country, it basically relies on experience to select alloying elements, and there is no The alloying principle, which is instructive for the design and selection of alloying elements, also lacks the research on the influence of alloying elements on the properties of weathering steel. In the process of steel production, some impurities will be introduced, which makes it difficult to control the weather resistance at its optimal level. The control of the ladle smelting process is actually a process in which impurities are easily introduced, because the residual slag of the ladle will lead to smelting. It is difficult to guarantee a relatively accurate composition of molten steel, but the problem of residual ladle slag is often solved by baking the ladle and increasing the transfer speed, and the cycle of intermediate and major repairs is difficult to meet the production of weathering steel, resulting in the quality of weathering steel. There are still differences Based on the above problems, there is an urgent need for a transfer ladle that can adapt to the production of weathering steel to optimize the smelting of steel.

SUMMARY OF THE INVENTION

The invention provides a ladle for cleaning and transferring the residual slag of the weathering steel liquid steel, which solves the problem that the residual slag in the ladle causes inaccurate composition of the weathering steel and affects its performance in the smelting process of the weathering steel in the prior art.

The technical scheme of the present invention is as follows:

A ladle for cleaning and transferring the residual slag of weathering steel liquid steel, comprising a ladle shell, and a permanent layer arranged in the ladle shell, the permanent layer being arranged on the bottom and side walls of the ladle shell, and further comprising a The surface of the permanent layer is sequentially provided with an impact-resistant layer, a molten pool layer, a slag line layer and an edge layer from bottom to top, and the impact-resistant layer, the slag line layer and the edge layer are all constructed using modular masonry structure, the impact-resistant layer, the slag line layer and the cladding layer all include structural blocks and fixed blocks, the structural blocks have a first slope, the fixed block has a second slope, so The second inclined surface of the fixed block presses the first inclined surface of the structural block to make the structural block close to the permanent layer, and further includes a disassembly and assembly assembly, and the disassembly and assembly assembly includes a disassembly and assembly assembly disposed on the structural block. The structural steel plate on the block and the fixed block also includes a connecting rod and a locking piece connected with the structural steel plate, and the structural steel plate is arranged on the structural block and the fixed block near the permanent layer. On one side, the connecting rod passes through the permanent layer and the ladle shell, and the locking member is provided at the end of the connecting rod protruding from the ladle shell.

The structural blocks of the impact-resistant layer are of circular truncated shape, the fixed blocks of the impact-resistant layer have several blocks and are arc-shaped strips, and a plurality of the fixed blocks of the impact-resistant layer are formed ring.

The structural blocks of the slag line layer are a plurality of blocks and are of arc-shaped bar type, the fixed blocks of the slag line layer are a plurality of blocks and are of an arc-shaped bar type, and the slag line layer of the The structural blocks and the fixed blocks are staggered and form a ring.

The structural blocks of the cladding layer are of several blocks and are of arc-shaped strip type, the fixed blocks of the cladding layer are of several blocks and are of arc-shaped strip type, and the The structural blocks and the fixed blocks are staggered and form a ring.

The ladle shell is provided with a trunnion, and the bottom of the ladle shell is provided with a vent plug and a nozzle, and the vent plug and the nozzle pass through the permanent layer and the impact-resistant layer.

The outer side of the steel clad shell is provided with reinforcing ribs.

The working principle and beneficial effects of the present invention are:

In the present invention, a cleaning transfer ladle for the residual slag of the weathering steel liquid steel is disclosed. From the background of the prior art, the precise control of the composition is difficult to overcome in the production process of the weathering steel, and the transfer ladle is actually very large. One of the influencing factors, but the intermediate repair or major repair adopted in the prior art is difficult to meet the needs of production. In the present invention, the internal blocks of the transfer ladle are formed into modular installation, so that the internal block of the transfer ladle can be realized. Rapid replacement of blocks, during the production process of transfer ladle, it is necessary to keep the bottom of the ladle, the slag line area and the edge of the ladle free of residual steel and slag, and clean it up for smelting, so as to ensure the accurate control of the composition of its weathering steel, based on modular installation. The technical idea is that the impact-resistant layer, the slag line layer and the cladding layer can use fixed blocks to fix the structural blocks on the steel cladding shell and the permanent layer inside, and adopt disassembly and assembly components, which can realize the installation of fixed blocks , the fixed block is fixed on the permanent layer through the inclined surface structure, so as to be fixed. When the residual steel and residue need to be cleaned up, the fixed block can be quickly disassembled by the quick disassembly of the disassembly and assembly components, and the fixed block can be quickly disassembled. The blocks and structural blocks are removed for repair and replaced with new blocks, which can meet the cleaning requirements of production and avoid the influence of residual steel residue on weathering steel.

Description of drawings

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

Fig. 1 is the overall three-dimensional structure schematic diagram of the ladle of the present invention;

Fig. 2 is the top view of the ladle of the present invention;

Fig. 3 is the sectional view along the A-A direction in Fig. 2;

Fig. 4 is the structural schematic diagram of the ladle slag line layer and the ladle edge layer of the present invention;

Fig. 5 is the structural schematic diagram of the impact-resistant layer of the ladle of the present invention;

In the figure: 1. Ladle shell, 2. Permanent layer, 3. Impact-resistant layer, 4. Molten pool layer, 5. Slag line layer, 6. Ladle layer, 7. Structural block, 8. Fixed block, 9 , Structural steel plate, 10, connecting rod, 11, locking piece, 12, trunnion, 13, vent plug, 14, nozzle, 15, reinforcing rib.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts are all related to the protection scope of the present invention.

As shown in FIG. 1 to FIG. 5 , the present embodiment proposes a ladle for cleaning and transferring the residual slag of weathering steel liquid steel, which includes a ladle shell 1 and a permanent layer 2 arranged in the ladle shell 1 . The layer 2 is arranged on the bottom and side walls of the ladle shell 1, and also includes an impact-resistant layer 3, a molten pool layer 4, a slag line layer 5 and a cladding layer 6 arranged on the surface of the permanent layer 2 in order from bottom to top. , the impact-resistant layer 3, the slag line layer 5 and the cladding layer 6 all adopt a modular masonry structure, and the impact-resistant layer 3, the slag line layer 5 and the cladding layer 6 are all It includes a structural block 7 and a fixed block 8, the structural block 7 has a first inclined surface, the fixed block 8 has a second inclined surface, and the second inclined surface of the fixed block 8 presses the structural block The first slope of 7 makes the structural block 7 close to the permanent layer 2 , and also includes a disassembly and assembly assembly, which includes a structure arranged on the structural block 7 and the fixed block 8 The steel plate 9 also includes a connecting rod 10 and a locking piece 11 connected with the structural steel plate 9 , and the structural steel plate 9 is arranged on the side of the structural block 7 and the fixed block 8 close to the permanent layer 2 , the connecting rod 10 passes through the permanent layer 2 and the ladle shell 1 , and the locking member 11 is arranged at one end of the connecting rod 10 extending out of the steel clad shell 1 .

In this embodiment, based on the technical concept of the present invention, modular transformation is carried out for the position where residues and residual steel are likely to be generated in the transfer ladle, and the original main structure of the ladle is not transformed, so that the thermal insulation of the ladle itself can be effectively guaranteed and the corresponding In order to improve the effectiveness of the smelting operation, the impact-resistant layer 3 at the bottom of the ladle, the slag line layer 5 and the ladle layer 6 at the upper half of the ladle are further transformed to form a modular installation. The structural direction adopted is the above transformation of each layer. Both are in the form of combined installation of fixed block 8 and structural block 7, and fixed block 8 is installed on steel clad shell 1 and permanent layer 2 through disassembly and assembly components;

Specifically, the fixed block 8 has a second inclined surface, and the structural block 7 has a first inclined surface. The two inclined surfaces function. The fixed block 8 is pressed against the structural block 7, and the fixed block 8 is installed by disassembling and assembling components. On the permanent layer 2, the structural block 7 is pressed to the permanent layer 2 by the fixed block 8 to ensure the stability of the installation. The three parts of the assembly are disassembled and assembled, wherein the structural steel plate 9 is embedded in the structural block 7 and the fixed block. 8, and is close to the side of the permanent layer 2. Therefore, during installation, the structural steel plate 9 can ensure the strength of the block on the one hand, and on the other hand, the block can also protect the structural steel plate 9. The structural steel plate 9 can take various forms. The structural steel plate 9 can be wavy or bent, or a structural rod can be set on its surface to improve the connection strength, while the connecting rod 10 connected with the structural steel plate 9 passes through the permanent The layer 2 and the ladle shell 1 are stretched out, and the connecting rod 10 is locked on the outside of the ladle shell 1 by the locking member 11. The locked state is that the ladle can be used. When the blocks in the ladle need to be disassembled, repaired and cleaned, it is necessary to The locking member 11 is opened, and the corresponding blocks are pushed out through the connecting rod 10, so that the cleanliness of the blocks and the ladle can be ensured to meet the smelting conditions of weathering steel.

The structural blocks 7 of the impact-resistant layer 3 are of circular truncated shape, the fixed blocks 8 of the impact-resistant layer 3 have several blocks and are arc-shaped strips, and all of the several impact-resistant layers 3 are in the shape of an arc. The fixed block 8 forms a ring.

In this embodiment, specifically in the impact-resistant layer 3, the structural blocks 7 adopted are circular truncated blocks, the fixed blocks 8 are arc-shaped strips, the annular side slope of the circular truncated truncated surface is the first slope, and the fixed arc-shaped strips are The arc-shaped side slope of the block 8 is the second slope, and a number of fixed blocks 8 will form a ring around it, so as to be sleeved outside the structural block 7, and a structural steel plate 9 is arranged in the block, and the connecting rod 10 passes through. The permanent layer 2 and the ladle shell 1 are locked by the locking member 11 to realize the fixing.

The structural blocks 7 of the slag line layer 5 are a plurality of blocks and are of arc strip type, and the fixed blocks 8 of the slag line layer 5 are several blocks and are of arc strip type. The structural blocks 7 and the fixed blocks 8 of the layer 5 are staggered and form a circle.

The structural blocks 7 of the cladding layer 6 are several blocks and are of arc-shaped strip type, and the fixed blocks 8 of the cladding layer 6 are several pieces and are of arc-shaped strip type. The structural blocks 7 and the fixed blocks 8 of the layer 6 are staggered and form a circle.

In this embodiment, the slag line layer 5 located in the middle and upper part of the ladle is similar in structure to the ladle edge layer 6, the structural blocks 7 and the fixed blocks 8 are both arc-shaped and staggered, and several structural blocks 7 and fixed The blocks 8 are connected end to end to form a ring structure. The first inclined plane and the second inclined plane are pressed together at the junction of the structural block 7 and the fixed block 8. The disassembly and assembly components are the same, and the fixing method refers to the impact-resistant layer 3 above. .

The ladle shell 1 is provided with a trunnion 12, the bottom of the ladle shell 1 is provided with a vent plug 13 and a nozzle 14, the vent plug 13 and the nozzle 14 pass through the permanent layer 2 and the impact resistance Layer 3.

In this embodiment, the trunnion 12 of the ladle shell 1 facilitates the transfer and hoisting of the ladle, and a vent 13 and a nozzle 14 are arranged at the bottom. The vent 13 blows gas to stir the molten steel, and the nozzle 14 guides the flow to prevent splashing.

A reinforcing rib 15 is provided on the outer side of the steel cladding shell 1 .

In this embodiment, reinforcing ribs 15 are arranged on the outer side of the steel clad shell 1 , and the specific arrangement of the reinforcing ribs 15 is adapted to be installed according to the situation of reinforcement.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. within.

Claims (6)

1. The clean transferring ladle for the residue of the weather-resistant molten steel comprises a steel cladding (1), a permanent layer (2) arranged in the steel cladding (1), wherein the permanent layer (2) is arranged at the bottom and the side wall of the steel cladding (1), and further comprises an impact-resistant layer (3), a molten pool layer (4), a slag line layer (5) and an edge layer (6) which are sequentially arranged on the surface of the permanent layer (2) from bottom to top, wherein the clean transferring ladle is characterized in that the impact-resistant layer (3), the slag line layer (5) and the edge layer (6) all adopt a modular masonry structure, the impact-resistant layer (3), the slag line layer (5) and the edge layer (6) all comprise structural blocks (7) and fixed blocks (8), the structural blocks (7) are provided with first inclined planes, the fixed blocks (8) are provided with second inclined planes, and the second inclined planes of the fixed blocks (8) press the first inclined planes of the structural blocks (7) tightly to enable the structural blocks (7) to be in a manner Building block (7) paste tightly permanent layer (2), still include the dismouting subassembly, the dismouting subassembly is including setting up structural steel plate (9) on structural block (7) and fixed building block (8), still include with connecting rod (10) and locking piece (11) that structural steel plate (9) are connected, structural steel plate (9) set up structural block (7) with fixed building block (8) are close to one side of permanent layer (2), connecting rod (10) pass permanent layer (2) and steel involucrum (1), locking piece (11) set up connecting rod (10) stretch out the one end of steel involucrum (1).

2. The steel ladle for clean transfer of the residues of the weathering steel molten steel according to claim 1, characterized in that the structural blocks (7) of the impact resistant layer (3) are of a truncated cone shape, the fixed blocks (8) of the impact resistant layer (3) have a plurality of blocks and are of an arc-bar shape, and the fixed blocks (8) of the impact resistant layer (3) form a circular ring.

3. The steel ladle for clean transferring of the residual slag of the weathering steel molten steel according to claim 1, characterized in that the structural blocks (7) of the slag line layer (5) are of several blocks and arc-shaped bar type, the fixed blocks (8) of the slag line layer (5) are of several blocks and arc-shaped bar type, and the structural blocks (7) and the fixed blocks (8) of the slag line layer (5) are staggered and form a circular ring.

4. The steel ladle for cleaning and transferring the residues of the weathering steel molten steel according to claim 1, characterized in that the structural blocks (7) of the inclusion layer (6) are several and arc-shaped bar-shaped, the fixed blocks (8) of the inclusion layer (6) are several and arc-shaped bar-shaped, and the structural blocks (7) and the fixed blocks (8) of the inclusion layer (6) are staggered and form a circular ring.

5. The clean transporting ladle for the residues of the weathering steel molten steel according to claim 1 is characterized in that a trunnion (12) is arranged on the ladle shell (1), a gas plug (13) and a water gap (14) are arranged at the bottom of the ladle shell (1), and the gas plug (13) and the water gap (14) penetrate through the permanent layer (2) and the impact-resistant layer (3).

6. The clean transporting ladle for the residues of the weathering steel molten steel according to claim 1, characterized in that the outside of the steel ladle shell (1) is provided with a reinforcing rib (15).

Images