CN115156489A

CN115156489A - Pouring device and bottom pouring type pouring system with same

Info

Publication number: CN115156489A
Application number: CN202210887067.6A
Authority: CN
Inventors: 刘建民; 胡显军; 顾晔; 成建强
Original assignee: Jiangsu Shagang Group Co Ltd; Jiangsu Shagang Iron and Steel Research Institute Co Ltd
Current assignee: Jiangsu Shagang Group Co Ltd; Jiangsu Shagang Iron and Steel Research Institute Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-10-11

Abstract

The invention relates to the technical field of pouring, and provides a pouring device and a bottom pouring type pouring system with the same, wherein the pouring device comprises: the mould is provided with at least two parallel mould cavities which are arranged in parallel, and any mould cavity is open at two ends; the base component comprises a first base and a second base, the first base is suitable for being installed on the second base, a pouring channel is arranged on the first base corresponding to the mold cavity, a transverse pouring groove is formed in the second base, and the projection of the pouring channel on the second base falls into the transverse pouring groove so that any mold cavity is communicated with the transverse pouring groove through the pouring channel. This pouring device can exempt from to forge the process, has effectively shortened the pilot scale process, and then has reduced the research and development cost, and this pouring device can need not additionally to set up the effect that the system can accomplish from the bottom pouring in the notes.

Description

Pouring device and bottom pouring type pouring system with same

Technical Field

The invention relates to the technical field of pouring, in particular to a pouring device and a bottom pouring type pouring system with the same.

Background

In the development process of steel products, the pilot test is a very important link, and the pilot test effect has a remarkable effect on the final performance and application of the products.

A small-capacity vacuum induction furnace is a common pilot-scale smelting device, a pilot-scale steel ingot is prepared by the vacuum induction furnace, when the vacuum induction furnace is used for preparing the pilot-scale steel ingot, a steel ingot mold is placed in the induction furnace, then a square steel ingot is prepared by adopting an upper injection mode, but the steel ingot prepared by the mode has the problems of poor surface quality and deep upper shrinkage cavity, when the traditional bottom injection mold is adopted, an injection system is additionally matched, an injection opening is arranged at the bottom of the steel ingot mold, a center column system is communicated with the injection opening, molten steel is injected into the steel ingot mold from the injection system, and after the injection is finished, the molten steel can remain in the injection system and cannot be utilized, so the material utilization rate is reduced.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to overcome the defects that in the prior art, when a pilot-scale steel ingot is prepared by using the vacuum induction furnace, a steel ingot mold is placed in the induction furnace, and then a square steel ingot is prepared by adopting an upper injection mode, but the steel ingot prepared by the mode has the problems of poor surface quality and deep upper shrinkage cavity, and when a traditional bottom injection mold is adopted, an additional injection system is required, an injection opening is arranged at the bottom of the steel ingot mold, a center column system is communicated with the injection opening, and molten steel is injected into the steel ingot mold from the injection system, but after the injection is completed, the molten steel remains in the injection system, and the remaining molten steel cannot be utilized, so that the material utilization rate is reduced, thereby providing a pouring device and a bottom injection type pouring system with the same.

A casting apparatus, comprising: the mould comprises at least two parallel mould cavities arranged in parallel, wherein each mould cavity is open at two ends; the base assembly comprises a first base and a second base, the first base is suitable for being installed on the second base, a pouring channel is arranged on the first base corresponding to the mold cavity, a transverse pouring groove is arranged on the second base, and the projection of the pouring channel on the second base falls into the transverse pouring groove, so that any mold cavity is communicated with the transverse pouring groove through the pouring channel; and injecting a casting liquid into one of the mold cavities, wherein the casting liquid is suitable for flowing through the transverse casting grooves along the corresponding casting channel to be injected into all the mold cavities which are arranged in parallel, and is suitable for rising along the bottom opening of the mold cavity to the top opening.

Optionally, in the above pouring apparatus, any of the mold cavities includes a first cavity and a second cavity, where the first cavity is a square hollow cavity, and a radial cross-sectional area of the second cavity gradually increases from the top opening to the bottom opening.

Optionally, in the above casting apparatus, an annular groove is formed along a side surface of the first base, a protrusion adapted to the annular groove is disposed on the second base, and a groove surface of the annular groove is attached to a wall surface of the protrusion, so that the first base and the second base are installed in a matching manner.

Optionally, in the pouring device, the transverse pouring trough is a semicircular groove.

Optionally, in the above pouring apparatus, the base assembly further includes a protection member surrounding the side surfaces of the first base and the second base, and adapted to apply a pressing force to the side surfaces of the first base and the second base.

Optionally, in the above casting apparatus, at least one lifting lug is respectively disposed on two sides of the mold, and a lifting force is applied to the lifting lug to separate the mold from the base assembly, thereby completing demolding.

Optionally, in the above pouring apparatus, the material of the mold is ductile iron.

Optionally, in the above casting apparatus, the first base and/or the second base are made of mullite.

Optionally, in the above pouring device, the protecting member is made of mild steel.

A bottom gating system, comprising: the pouring device is the pouring device.

The technical scheme of the invention has the following advantages:

1. the invention provides a pouring device, comprising: the mould comprises at least two parallel mould cavities arranged in parallel, wherein each mould cavity is open at two ends; the base assembly comprises a first base and a second base, the first base is suitable for being installed on the second base, a pouring channel is arranged on the first base corresponding to the mold cavity, a transverse pouring groove is arranged on the second base, and the projection of the pouring channel on the second base falls into the transverse pouring groove, so that any mold cavity is communicated with the transverse pouring groove through the pouring channel; and injecting a casting liquid into one of the mold cavities, wherein the casting liquid is suitable for flowing through the transverse casting grooves along the corresponding casting channel to be injected into all the mold cavities which are arranged in parallel, and is suitable for rising along the bottom opening of the mold cavity to the top opening.

In the pouring device with the structure, the pouring device is arranged into a detachably connected mold and base assembly, at least two mold cavities which are arranged in parallel are arranged in the mold, one mold cavity is arranged into an opening at two ends, the base assembly comprises a first base and a second base which are matched, a pouring channel is arranged on the first base, a transverse pouring groove is arranged on the second base, and the projection of the pouring channel on the second base falls into the transverse pouring groove, so that the mold cavities are communicated with the transverse pouring groove through the pouring channel, then pouring liquid is injected into one mold cavity, the pouring liquid can flow into other mold cavities along the transverse pouring groove along the corresponding pouring channel, and can be injected into a top opening from the bottom opening, so that the bottom pouring effect is realized.

2. In the pouring device provided by the invention, any one of the mould cavities comprises a first cavity and a second cavity, wherein the first cavity is a square hollow cavity, and the radial cross-sectional area of the second cavity is gradually increased from the top opening to the bottom opening.

In the pouring device of this structure, through setting up the mould chamber into first chamber and second chamber, set up first chamber into square hollow cavity to as the dead head embedding department that generates heat, can guarantee the pouring quality, and the radial cross sectional area of second chamber increases from open-top towards the bottom opening gradually, and the follow-up drawing of patterns of being convenient for is convenient.

3. In the pouring device provided by the invention, the base assembly further comprises a protection piece, wherein the protection piece surrounds the side surfaces of the first base and the second base and is suitable for applying a pressing force to the side surfaces of the first base and the second base.

Through setting up the protection piece, can apply the extrusion force to first base and second base, avoid taking place the displacement between the two and change, and can avoid first base and second base to explode because of the high temperature and split.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of a mounting structure of a mold and a base assembly of a casting apparatus according to a first embodiment of the present invention;

FIG. 2 is a schematic top view of the mold;

FIG. 3 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic top view of the first base;

FIG. 5 is a schematic cross-sectional view taken along the line B-B in FIG. 4;

FIG. 6 is a schematic top view of the second base;

FIG. 7 is a schematic view of the structure taken along the line C-C in FIG. 6;

FIG. 8 is a schematic cross-sectional view taken along line D-D of FIG. 6;

description of the reference numerals:

1. a mold; 101. a mold body;

102. a mold cavity; 1021. a first chamber; 1022. a second chamber;

103. lifting lugs;

2. a base assembly; 201. a first base; 202. a second base;

203. pouring a channel; 204. transversely pouring a groove;

205. an annular groove; 206. a protrusion; 207. a protective member.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

In the present embodiment, a pouring device is described, referring to fig. 1 to 8, the pouring device includes a mold 1 and a base assembly 2, the mold 1 is correspondingly placed on the base assembly 2, the mold 1 has at least two mold cavities 102 that are parallel and juxtaposed, all the mold cavities 102 are arranged with openings at both ends and are arranged on a mold body, the base assembly 2 includes a first base 201 and a second base 202, the first base 201 is adapted to be mounted on the second base 202, and is detachably mounted therebetween, a pouring channel 203 is arranged on the first base 201 corresponding to each mold cavity 102, and a transverse pouring slot 204 is arranged on the second base 202, a projection of the pouring channel 203 on the second base 202 falls into the transverse pouring slot 204, so that any one mold cavity 102 is communicated with the transverse pouring slot 204 through the pouring channel 203.

One of the mold cavities 102 is filled with a casting liquid that is able to flow through the transverse casting grooves 204 along its corresponding casting channel 203 toward all of the mold cavities 102 in juxtaposition and is adapted to rise along the bottom opening toward the top opening of the mold cavity 102, the casting channel 203 being circular in transverse cross-section.

Through setting up this pouring device into mould 1 and base subassembly 2 that can dismantle the connection, and have at least two parallel mold cavity 102 that set up side by side in this mould 1, set up arbitrary one mold cavity 102 into both ends opening, this base subassembly 2 includes first base 201 and the second base 202 of adaptation, set up pouring channel 203 on first base 201, then set up horizontal pouring basin 204 on second base 202, and this pouring channel 203 is the projection on second base 202 falls into this horizontal pouring basin 204 again, so that mould cavity 102 passes through pouring channel 203 and horizontal pouring basin 204 intercommunication, then pour into the pouring liquid into in one of them mold cavity 102, the pouring liquid can flow to other mold cavity 102 along horizontal pouring basin 204 that can flow through along corresponding pouring channel 203, and can follow the bottom opening and pour into the pouring liquid into to the top opening, the effect of bottom pouring has been realized, this pouring device can avoid forging process, the pilot scale process has effectively been shortened, and then research and development cost has been reduced, and this pouring device can accomplish the effect that can follow the bottom pouring system from the bottom of pouring in need not additionally to set up.

In this embodiment, any one of the mold cavities 102 includes a first cavity 1021 and a second cavity 1022, where the first cavity 1021 is a square hollow cavity, a radial cross-sectional area of the second cavity 1022 gradually increases from a top opening toward a bottom opening, and by setting the mold cavity 102 as the first cavity 1021 and the second cavity 1022, the first cavity 1021 is set as the square hollow cavity to serve as an embedding part of a heat riser, so that pouring quality can be ensured, and a radial cross-sectional area of the second cavity 1022 gradually increases from the top opening toward the bottom opening, so that subsequent demolding is convenient, and the radial cross-sectional area of the second cavity 1022 can also be set as the square shape, during pouring, pouring liquid in each mold cavity 102 all rises from the bottom opening toward the top opening of the mold cavity 102, and then at least the second cavity 1022 of the mold cavity 102 is filled with the pouring liquid, so that an effect that each mold cavity 102 is poured from the bottom is achieved, and pouring quality is ensured.

The casting liquid, such as molten steel, in the second cavity 1022 in this embodiment has a capacity of 25-30kg, and is suitable for producing small-weight pilot ingots.

In the pouring device in this embodiment, in order to better adapt the first base 201 to the second base 202 and detach and separate the first base 201 from the second base 202, an annular groove 205 may be formed along a side surface of the first base 201, a cross section of a notch of the annular groove 205 is formed in a stepped shape, a protrusion 206 adapted to the annular groove 205 is disposed on the second base 202, and a stepped groove surface of the annular groove 205 is attached to a wall surface of the protrusion 206, so that the first base 201 and the second base 202 are installed in a matching manner, which also facilitates detachment of the first base 201 and the second base 202.

In a specific application, the transverse pouring slot 204 may be configured as a semicircular groove, a length distance of the semicircular groove is greater than a maximum distance between two adjacent farthest pouring channels 203 of all the pouring channels 203 on the first base 201, so as to ensure that the pouring liquid can stably enter the transverse pouring slot 204 and can be injected into other mold cavities 102 along the transverse pouring slot 204, and during the pouring process, the liquid level of the pouring liquid in each mold cavity 102 is in a flush state by controlling a pouring speed.

In order to avoid displacement variation between the first base 201 and the second base 202 and avoid the first base 201 and the second base 202 from being cracked due to high temperature, the base assembly 2 further includes a protection member 207, the protection member 207 surrounds the side surfaces of the first base 201 and the second base 202 and is adapted to apply a pressing force to the side surfaces of the first base 201 and the second base 202, under the action of the pressing force, the first base 201 and the second base 202 are confined in the protection member 207, so as to achieve the effect of stable installation of the two, and in a specific application, the protection member 207 is made of a low-carbon steel material.

In the pouring device in this embodiment, at least one lifting lug 103 is respectively disposed on two sides of the mold body 101 of the mold 1, and lifting force is applied to the lifting lug 103, so that the mold is separated from the base assembly 2, and demolding is completed, specifically, the number of the lifting lugs 103 may be four, two lifting lugs are disposed on each side, and lifting force is applied to the mold body through the lifting lugs 103.

In this embodiment, the mold 1 is made of ductile cast iron, and the first base 201 and the second base 202 are made of mullite.

The mold cavity 102 in this embodiment is set to two, be first mold cavity 102 and second mold cavity 102 respectively, and then pouring channel 203 also sets to two, during the pouring, the pouring liquid at first gets into first mold cavity 102, enter into second mold cavity 102 through pouring channel 203 and the horizontal pouring basin 204 on the first base 201, the liquid level that makes the pouring liquid in first mold cavity 102 and the second mold cavity 102 through control pouring speed is in same horizontal line, the pilot scale steel ingot surface quality that this pouring device poured out is better need not to handle, product utilization has been improved.

In a specific application, the length of the first side of the square hollow cavity of the first cavity 1021 is set to be 1.5-1.6 times of the length of the second side, and the height of the square hollow cavity is 60-70mm.

The second cavity 1022 is shaped like a frustum of a pyramid as a whole, wherein the top surface of the frustum of a pyramid is the bottom surface of the cavity of the square hollow cavity, the sum of the lengths of the first edge and the second edge of the frustum of a pyramid is 1.2-1.25 times of the sum of the lengths of the first edge and the second edge of the top surface respectively, and the height of the frustum of a pyramid is 260-270mm.

Example 2:

this embodiment describes a bottom pouring type gating system, includes: the pouring device is the pouring device described in embodiment 1, and pouring liquid, which may be molten steel, is injected through the intermediate conveyor and the opening of one of the mold cavities 102 of the pouring device.

In specific application, the whole pouring device is placed in a vacuum induction furnace, a raw material of molten steel is placed in a crucible in the vacuum induction furnace to be heated to the molten steel with the temperature higher than 1450 ℃, then the molten steel in the crucible is poured into the intermediate conveyor, and a discharge port of the intermediate conveyor faces towards a mold cavity 102 of the mold 1 and is arranged above the mold, so that the effect of pouring the molten steel into the mold cavity 102 is achieved.

The intermediate conveyor adopts a tundish which is made of refractory materials.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.

Claims

1. A casting apparatus, comprising:

the mould (1) is provided with at least two parallel and juxtaposed mould cavities (102), and any mould cavity (102) is open at two ends;

the base assembly (2) comprises a first base (201) and a second base (202), the first base (201) is suitable for being installed on the second base (202), a pouring channel (203) is arranged on the first base (201) corresponding to the mold cavity (102), a transverse pouring groove (204) is arranged on the second base (202), and the projection of the pouring channel (203) on the second base (202) falls into the transverse pouring groove (204) so that any mold cavity (102) is communicated with the transverse pouring groove (204) through the pouring channel (203);

-injecting a casting liquid into one of said mould cavities (102), said casting liquid being adapted to flow through said transverse casting channel (204) along its corresponding casting channel (203) towards all mould cavities (102) juxtaposed and to rise along the bottom opening towards the top opening of said mould cavities (102).

2. The casting apparatus according to claim 1, wherein any of the mold cavities (102) comprises a first cavity (1021) and a second cavity (1022), wherein the first cavity (1021) is a square hollow cavity and the radial cross-sectional area of the second cavity (1022) gradually increases from the top opening toward the bottom opening.

3. The casting device according to claim 1 or 2, characterized in that an annular groove (205) is formed along the side surface of the first base (201), a protrusion (206) adapted to the annular groove (205) is arranged on the second base (202), and the groove surface of the annular groove (205) is attached to the wall surface of the protrusion (206), so that the first base (201) and the second base (202) are installed in a matching manner.

4. Pouring device according to claim 3, characterized in that the transverse pouring spout (204) is a semicircular groove.

5. Pouring device according to claim 4, wherein said base assembly (2) further comprises a protection (207), said protection (207) surrounding the sides of said first base (201) and said second base (202) adapted to apply a squeezing force to the sides of said first base (201) and said second base (202).

6. Casting device according to claim 5, characterized in that at least one lifting lug (103) is arranged on each side of the mould (1), and that a lifting force is applied to the lifting lug (103) in order to separate the mould (1) from the base assembly (2) and to complete the demoulding.

7. Casting device according to claim 6, characterized in that the material of the mould (1) is nodular cast iron.

8. Casting device according to claim 6 or 7, characterized in that the first base (201) and/or the second base (202) are made of mullite.

9. Pouring device according to claim 6 or 7, characterized in that the protection (207) is made of mild steel.

10. A bottom gating system, comprising: a casting apparatus according to any one of claims 1 to 9.