CN218785176U

CN218785176U - Casting device for producing steel ingots

Info

Publication number: CN218785176U
Application number: CN202220784574.2U
Authority: CN
Inventors: 王传刚; 冀承营; 裴英超; 翟守猛; 于在新
Original assignee: Shandong Baoding Heavy Industrial Co ltd
Current assignee: Shandong Baoding Heavy Industrial Co ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2023-04-04
Anticipated expiration: 2032-04-02

Abstract

The utility model relates to a casting device is used to production steel ingot belongs to casting technical field, including setting up the casting concave pool on workshop ground, be equipped with the steel ingot mould in the casting concave pool, a serial communication port, steel ingot mould top is equipped with the gas vent, be equipped with the chassis on the casting concave pool bottom surface, be equipped with the base on the chassis, the inlet has been seted up on the base, be equipped with the casting passageway with the inlet intercommunication in the chassis, the chassis upper end is equipped with the notes liquid pipe with the casting passageway intercommunication, the workshop is subaerial to be equipped with hydro-cylinder one and two guide rails, all install the slider on two guide rails, connect through the connecting plate between two sliders, hydro-cylinder one links to each other with the connecting plate, be equipped with hydro-cylinder two on the connecting plate, the lift seat is installed on the piston rod top of hydro-cylinder two, install the negative pressure pump on the lift seat, the negative pressure pump exit is connected with the air duct of L shape. Use the utility model discloses the casting steel ingot, supplement the molten steel in the passageway to casting that can be better under the atmospheric pressure effect, effectively avoid defects such as loose, shrinkage cavity, segregation.

Description

Casting device for producing steel ingots

Technical Field

The utility model relates to a production casting device for steel ingot belongs to casting technical field.

Background

The large steel ingot is the main raw material of a large casting and forging piece of special steel grade, and the production method comprises the following steps: molten steel is poured into the ingot mould from a ladle by an upper pouring method or a lower pouring method, and is gradually solidified into the steel ingot by means of cooling and heat dissipation of the wall of the steel ingot mould. In the solidification process, the volume shrinkage occurs at the solidification front edge, so that the defects of center looseness, shrinkage cavity, segregation and the like are easily caused to the steel ingot.

In the prior art, a common defect compensation mode is to arrange a riser at a casting opening, so that molten steel in the riser can be supplemented into a steel ingot casting mold, and the defects of looseness, shrinkage cavity, segregation and the like are avoided. However, the cooling rate of the molten steel in the ingot mold is sometimes too high, the temperature of the molten steel in the feeder head is also gradually lowered, the fluidity is insufficient, and the effect of replenishing the molten steel in the ingot mold is limited.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve exist among the prior art not enough, provide one kind to supplement the better production casting device for steel ingot of molten steel effect in the steel ingot casting mould.

The utility model discloses a realize through following technical scheme:

the casting device for producing the steel ingot comprises a casting concave pool arranged on the ground of a workshop, wherein a steel ingot casting mold is arranged in the casting concave pool, and the casting device is characterized in that an exhaust port is arranged at the top end of the steel ingot casting mold, a base is arranged on the bottom surface of the casting concave pool, a base is arranged on the base, a liquid inlet is arranged on the base, a casting channel communicated with the liquid inlet is arranged in the base, and a liquid injection pipe communicated with the casting channel is arranged at the upper end of the base;

the workshop ground is provided with a first oil cylinder and two guide rails, the two guide rails are provided with sliding blocks, the two sliding blocks are connected through a connecting plate, the first oil cylinder is connected with the connecting plate, the connecting plate is provided with a second oil cylinder, the top ends of piston rods of the second oil cylinder are provided with a lifting seat, the lifting seat is provided with a negative pressure pump, and the outlet of the negative pressure pump is connected with an L-shaped air guide pipe.

The steel ladle is lifted by using hoisting equipment in a casting workshop, molten steel in the steel ladle is injected into a steel ingot casting mould through a liquid injection pipe, a casting channel and a liquid inlet, after the steel ingot casting mould is fully cast with the molten steel, the molten steel is continuously injected into the liquid injection pipe, the air guide pipe is pushed to be right above the liquid injection pipe through the first oil cylinder, then the air guide pipe is driven to descend through the second oil cylinder, so that the air guide pipe enters the liquid injection pipe, gas is injected into the liquid injection pipe through the negative pressure pump, the molten steel is well supplemented into the casting channel under the action of air pressure, and the defects of looseness, shrinkage cavity, segregation and the like are effectively avoided.

The utility model discloses a further improvement still, annotate the liquid pipe and be three layer construction, including interior heat preservation and outer heat preservation, be equipped with the vacuum layer between interior heat preservation and the outer heat preservation. The mechanism of the liquid injection pipe has better heat preservation effect on the molten steel in the liquid injection pipe, and is beneficial to slowing down the cooling speed of the molten steel in the liquid injection pipe.

The utility model discloses a further improvement still, annotate the liquid pipe top and be equipped with the mouth that inserts of loudspeaker form. The ladle liquid outlet inserts the mouth that inserts of annotating liquid pipe top loudspeaker form, and it is more convenient to annotate the liquid operation.

The utility model discloses a further improvement still, the subaerial baffle that is equipped with in workshop, the baffle is located between two guide rails. The baffle plays the effect of spacing slider, is convenient for annotate the accurate control of liquid pipe's position.

The utility model discloses a further improvement still, when hydro-cylinder two is located the rightmost end and the connecting plate contacts with the baffle, the air duct is located annotates the liquid pipe directly over.

The utility model discloses a further improvement still, the steel ingot mould is split type structure, including two parts.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

the steel ladle is lifted by using hoisting equipment in a casting workshop, molten steel in the steel ladle is injected into a steel ingot casting mould through a liquid injection pipe, a casting channel and a liquid inlet, after the steel ingot casting mould is fully cast with the molten steel, the molten steel is continuously injected into the liquid injection pipe, the air guide pipe is pushed to be right above the liquid injection pipe through the first oil cylinder, then the air guide pipe is driven to descend through the second oil cylinder, so that the air guide pipe enters the liquid injection pipe, the negative pressure pump injects gas into the liquid injection pipe, the molten steel is better supplemented into the casting channel under the action of air pressure, and the defects of looseness, shrinkage cavity, segregation and the like are effectively avoided.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional structure view of the guide rail and the slider according to the embodiment of the present invention.

Fig. 3 is a schematic top view of the guide rail, the slider and the connecting plate according to the embodiment of the present invention.

In the figure: 1. a workshop floor; 2. casting a concave pool; 3. a chassis; 4. a base; 5. ingot casting; 6. a liquid inlet; 7. an exhaust port; 8. molten steel; 9. a casting channel; 10. a liquid injection pipe; 11. an inner insulating layer; 12. an outer insulating layer; 13. a vacuum layer; 14. an access port; 15. a guide rail; 16. a slider; 17. a baffle plate; 18. a connecting plate; 19. a hinged seat; 20. a first oil cylinder; 21. a second oil cylinder; 22. a lifting seat; 23. a negative pressure pump; 24. an air duct.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the casting device for producing steel ingots comprises a casting concave pool 2 arranged on a workshop floor 1, a steel ingot casting mold 5 for containing molten steel 8 is arranged in the casting concave pool 2, the steel ingot casting mold is of a split structure and comprises two parts, the two parts are the same in size, an exhaust port 7 is arranged at the top end of the steel ingot casting mold 5, a base plate 3 is arranged on the bottom surface of the casting concave pool 2, a base 4 is arranged on the base plate 3, a liquid inlet 6 is arranged on the base plate 4, a casting passage 9 communicated with the liquid inlet 6 is arranged in the base plate 3, and a liquid injection pipe 10 communicated with the casting passage 9 is arranged at the upper end of the base plate 3;

the workshop floor 1 is provided with a first oil cylinder 20 and two guide rails 15, the two guide rails 15 are respectively provided with a sliding block 16, the two sliding blocks 16 are connected through a connecting plate 18, the first oil cylinder 20 is connected with a hinged seat 19 arranged on the connecting plate 18, the connecting plate 18 is provided with a second oil cylinder 21, the top end of a piston rod of the second oil cylinder 21 is provided with a lifting seat 22, the lifting seat 22 is provided with a negative pressure pump 23, and the outlet of the negative pressure pump 23 is connected with an L-shaped air guide pipe 24.

The liquid injection pipe 10 is of a three-layer structure and comprises an inner heat-insulating layer 11 and an outer heat-insulating layer 12, a vacuum layer 13 is arranged between the inner heat-insulating layer 11 and the outer heat-insulating layer 12, and a horn-shaped access port 14 is arranged at the top end of the liquid injection pipe 10.

Wherein, be equipped with baffle 17 on the workshop ground 1, baffle 17 is located between two guide rails 15, and the baffle plays spacing and the effect of location.

When the second oil cylinder 21 is positioned at the rightmost end and the connecting plate 18 is in contact with the baffle 17, the air duct 24 is positioned right above the liquid injection pipe 10.

The working principle is as follows:

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative relationships in positions, if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A casting device for producing steel ingots comprises a casting concave pool (2) arranged on a workshop ground (1), wherein a steel ingot casting mold (5) is arranged in the casting concave pool (2), and is characterized in that an exhaust port (7) is arranged at the top end of the steel ingot casting mold (5), a chassis (3) is arranged on the bottom surface of the casting concave pool (2), a base (4) is arranged on the chassis (3), a liquid inlet (6) is arranged on the base (4), a casting passage (9) communicated with the liquid inlet (6) is arranged in the chassis (3), and a liquid injection pipe (10) communicated with the casting passage (9) is arranged at the upper end of the chassis (3);

be equipped with hydro-cylinder (20) and two guide rails (15) on workshop ground (1), all install slider (16) on two guide rails (15), connect through connecting plate (18) between two sliders (16), hydro-cylinder (20) link to each other with connecting plate (18), be equipped with hydro-cylinder two (21) on connecting plate (18), lift seat (22) are installed on hydro-cylinder two (21) piston rod top, install negative pressure pump (23) on lift seat (22), negative pressure pump (23) exit is connected with air duct (24) of L shape.

2. A casting device for producing steel ingots according to claim 1, characterized in that the liquid injection pipe (10) has a three-layer structure, and comprises an inner heat-insulating layer (11) and an outer heat-insulating layer (12), and a vacuum layer (13) is arranged between the inner heat-insulating layer (11) and the outer heat-insulating layer (12).

3. A casting device for producing steel ingots according to claim 1 or 2, characterized in that the top end of the liquid injection pipe (10) is provided with a trumpet-shaped access opening (14).

4. A casting device for producing steel ingots according to claim 1, wherein a baffle (17) is provided on the shop floor (1), the baffle (17) being located between the two rails (15).

5. A casting device for producing steel ingots according to claim 4, wherein when the second oil cylinder (21) is positioned at the rightmost end and the connecting plate (18) is in contact with the baffle plate (17), the gas guide pipe (24) is positioned right above the liquid injection pipe (10).

6. A casting device for producing ingots according to claim 1, wherein the ingot mold (5) is of a split type structure comprising two parts.