CN211438012U - Pressure casting mould of large-scale steel ingot - Google Patents
Pressure casting mould of large-scale steel ingot Download PDFInfo
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- CN211438012U CN211438012U CN201922218633.0U CN201922218633U CN211438012U CN 211438012 U CN211438012 U CN 211438012U CN 201922218633 U CN201922218633 U CN 201922218633U CN 211438012 U CN211438012 U CN 211438012U
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Abstract
The utility model provides a pressure casting mould of large steel ingots, which comprises a central casting pipe, a chassis, an ingot mould base, an ingot mould, an arc-shaped cover plate and a pressure adjusting system; the middle injection pipe and the ingot mold base are arranged on the chassis, the bottom of the ingot mold is arranged on the ingot mold base, the bottom of the middle injection pipe is communicated with one end of a soup channel in the chassis, and the other end of the soup channel is communicated with the bottom of the ingot mold through an opening of the ingot mold base; the arc cover plate is arranged at the top of the ingot mould; sealing the contact part of the arc-shaped cover plate and the ingot mold; and a pressure regulating system is arranged on the arc-shaped cover plate and comprises a pressure gauge, a pressure increasing valve, a pressure reducing valve and a control unit. The utility model discloses add at the top of ingot mould and cover the arc apron after well molten steel pouring, booster pump through among the pressure governing system increases the air pressure in the ingot mould, makes to solidify and goes on in the environment that is higher than atmospheric pressure, and then improves the feeding ability of molten bath to the forward position that solidifies.
Description
Technical Field
The utility model belongs to the technical field of metal material and processing, concretely relates to pressure casting mould of large-scale steel ingot.
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. For large steel ingots, the control difficulty of center porosity, shrinkage cavity and segregation is higher due to large volume and long solidification time. In the traditional die casting production process, the feeding capacity of the solidification front is related to the height of a molten pool, the feeding power is the ferrostatic pressure and the atmospheric pressure of the molten pool, and the method for controlling the central defects mainly comprises the steps of reducing the casting superheat degree, optimizing ingot type parameters, trickle filling in the final casting stage, optimizing the performance of raw and auxiliary materials and the like. The methods play a good role to a certain extent, but the control difficulty is higher, and breakthrough progress is difficult to occur after the methods are developed to a certain extent.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a pressure casting mould of large-scale steel ingot solves one of above-mentioned problem at least. The utility model discloses well molten steel pouring adds at the top of ingot mould after the end and covers the arc apron, the apron have certain dead weight and with the ingot mould between seal with heat-resisting sealed pad, the booster pump through among the pressure regulation system increases the air pressure in the ingot mould, make to solidify go on in the environment that is higher than atmospheric pressure, and then improve the molten bath to the feeding ability of solidifying the forward position, alleviate defects such as central shrinkage cavity, loose, the composition segregation of large-scale steel ingot.
The utility model provides a technical scheme that its technical problem adopted is: a pressure casting mould for large steel ingots comprises a pouring pipe, a chassis, an ingot mould base, an ingot mould, an arc-shaped cover plate and a pressure adjusting system;
the middle injection pipe and the ingot mould base are arranged on the chassis, the bottom of the ingot mould is arranged on the ingot mould base, and the bottom of the ingot mould base is provided with an opening; the bottom of the middle injection pipe is communicated with one end of a soup channel in the chassis, and the other end of the soup channel is communicated with the bottom of the ingot mould through an opening of the ingot mould base;
the arc-shaped cover plate is arc-shaped and is arranged at the top of the ingot mould; sealing the contact part of the arc-shaped cover plate and the ingot mold;
the arc-shaped cover plate is provided with a pressure adjusting system, the pressure adjusting system comprises a pressure gauge, a pressure increasing valve, a pressure reducing valve and a control unit, and the pressure gauge, the pressure increasing valve and the pressure reducing valve are respectively connected with the control unit.
In the scheme, a spigot is arranged on the inner side of the top of the ingot mould; the bottom edge of the arc-shaped cover plate is positioned in the notch.
In the scheme, the contact part of the arc-shaped cover plate and the ingot mould is provided with a heat-resistant sealing gasket.
And a heat insulation plate is arranged at the riser of the ingot mould.
In the scheme, the arc-shaped cover plate is provided with the hole and the pressure gauge is installed, and the pressure gauge is used for monitoring the air pressure in the steel ingot mold in real time.
In the scheme, the arc-shaped cover plate is provided with the hole and is provided with the vent pipeline which is used for being connected with the additional pump, and the vent pipeline is provided with the booster valve and the pressure release valve.
In the above scheme, the arc-shaped cover plate is provided with the lifting lug.
In the above scheme, the arc-shaped cover plate is made of steel materials.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses the pressure casting mould of large-scale steel ingot has the arc apron, is equipped with pressure governing system on the arc apron, adds the arc apron at the top of ingot mould after the molten steel pouring, adjusts the inside gas pressure of ingot mould through pressure governing system, and the reinforcing solidifies the molten bath feeding ability of forward position, and the ingot mould top adds the lid, can reduce the calorific loss at top, further postpones the capping, promotes the feeding, the utility model discloses alleviate defects such as central shrinkage cavity, loose, composition segregation of large-scale steel ingot, simple structure implements the degree of difficulty low.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of a pouring system for pressure casting of large steel ingots according to an embodiment of the present invention.
In the figure: 1. a middle injection pipe; 2. a chassis; 3. an ingot mold base; 4. an ingot mold; 5. a heat insulating plate; 6. molten steel; 7. covering slag; 8. a heat generating agent; 9. carbonizing the rice hulls; 10. an arc-shaped cover plate; 11. a heat-resistant gasket; 12. lifting lugs; 13. a pressure gauge; 14. a pressure increasing valve; 15. a pressure relief valve; 16. stopping the opening; 17. a soup channel; 18. and (4) opening.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Fig. 1 shows a preferred embodiment of the pressure casting mold for large-sized steel ingots according to the present invention, which comprises a central pouring pipe 1, a chassis 2, an ingot mold base 3, an ingot mold 4, an arc-shaped cover plate 10 and a pressure regulating system; the middle injection pipe 1 and the ingot mould base 3 are arranged on the chassis 2, the bottom of the ingot mould 4 is arranged on the ingot mould base 3, and the bottom of the ingot mould base 3 is provided with an opening 18; the bottom of the middle injection pipe 1 is communicated with one end of a soup channel 17 in the chassis 2, and the other end of the soup channel 17 is communicated with the bottom of the ingot mould 4 through an opening 18 of the ingot mould base 3;
the arc-shaped cover plate 10 is arc-shaped, and the arc-shaped cover plate 10 is arranged at the top of the ingot mould 4; and the contact part of the arc-shaped cover plate 10 and the ingot mould 4 is sealed.
The arc-shaped cover plate 10 is provided with a pressure adjusting system, the pressure adjusting system comprises a pressure gauge 13, a pressure increasing valve 14, a pressure reducing valve 15 and a control unit, and the pressure gauge 13, the pressure increasing valve 14 and the pressure reducing valve 15 are respectively connected with the control unit. The air pressure in the ingot mould 4 has an automatic adjusting function; when the air pressure in the ingot mould 4 is lower than the set pressure, the booster pump is automatically started to open the booster valve 14 for boosting; when the air pressure in the ingot mold 4 is higher than the set pressure, the relief valve 15 is automatically actuated to reduce the pressure.
According to the present embodiment, preferably, the top inner side of the ingot mould 4 is provided with a spigot 16; the bottom edge of the curved cover plate 10 is located in the seam allowance 16 to facilitate the placement of the curved cover plate 10 and prevent it from sliding off.
According to the present embodiment, it is preferable that the arc-shaped cover plate 10 is provided with a heat-resistant gasket 11 at the contact with the ingot mold 4 to prevent gas leakage in the ingot mold 4 from causing a change in gas pressure.
The riser of the ingot mould 4 is provided with a heat insulation plate 5 to reduce heat transfer around the riser.
According to the present embodiment, it is preferable that the arc-shaped cover plate 10 is perforated and a pressure gauge 13 is installed, and the pressure gauge 13 is used for monitoring the pressure of air in the ingot mold 4 in real time.
According to the present embodiment, it is preferable that the arc cover plate 10 is perforated and is provided with a vent line for connecting with an additional pump, and the vent line is provided with a pressure increasing valve 14 and a pressure releasing valve 15.
According to the present embodiment, preferably, the arc-shaped cover plate 10 is provided with a lifting lug 12 for facilitating lifting.
According to the present embodiment, preferably, the arc cover plate 10 is made of steel, and the arc cover plate 10 should have a sufficient weight to balance the gas pressure in the mold and prevent the arc cover plate 10 from being pushed open, so as to achieve a sealing effect and ensure safety.
The method for pressure casting the large steel ingot comprises the following specific steps:
after the pouring of the molten steel 6 is finished, a cold charge is inserted into the middle pouring pipe 1 to solidify the molten steel 6 in the middle pouring pipe 1 so as to prevent the molten steel 6 from overflowing from the upper opening of the middle pouring pipe 1 due to the increase of the pressure in the ingot mold 4;
covering an arc-shaped cover plate 10 on the ingot mould 4, and sealing the joint position of the arc-shaped cover plate 10 and the ingot mould 4 by using a heat-resistant sealing gasket 11;
opening a pressure increasing valve 14 and a pressure reducing valve 15 of a pressure adjusting system on the arc-shaped cover plate 10, filling compressed air into the ingot mould 4 through a pressure increasing opening, and closing the pressure increasing valve 14 after the pressure increasing speed in the ingot mould 4 reaches a set value of 0.5-1.0Mpa within 1 minute; the feeding effect is better when the pressure setting value is within the range of 0.5-1.0Mpa, and the safety is high.
And a pressure gauge 13 on the arc-shaped cover plate 10 monitors the pressure in the ingot mould 4 in real time and transmits pressure information to the control unit, when the pressure is higher than a set value, the control unit controls the pressure relief valve 15 to open and reduce the pressure, and when the pressure is lower than the set value, the control unit controls the pressure increasing valve 14 to open and increase the pressure, so that the steel ingot finishes the solidification process under the set pressure.
The utility model discloses an improve the gas pressure in the ingot mould 4 and improve the feeding ability of solidifying the forward position, the effect is obvious, and gas pressure is every to increase 1atm, is equivalent to the molten bath height and increases 1.45m, and simple structure implements the degree of difficulty and hangs down.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above detailed description is only for the purpose of illustrating the practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A pressure casting mould of a large-scale steel ingot is characterized by comprising a middle pouring pipe (1), a chassis (2), an ingot mould base (3), an ingot mould (4), an arc-shaped cover plate (10) and a pressure adjusting system;
the middle injection pipe (1) and the ingot mould base (3) are arranged on the chassis (2), the bottom of the ingot mould (4) is arranged on the ingot mould base (3), and the bottom of the ingot mould base (3) is provided with an opening (18); the bottom of the middle injection pipe (1) is communicated with one end of a soup channel (17) in the chassis (2), and the other end of the soup channel (17) is communicated with the bottom of the ingot mould (4) through an opening (18) of the ingot mould base (3);
the arc-shaped cover plate (10) is arc-shaped, and the arc-shaped cover plate (10) is arranged at the top of the ingot mould (4); the contact part of the arc-shaped cover plate (10) and the ingot mould (4) is sealed;
be equipped with pressure governing system on arc apron (10), pressure governing system includes pressure gauge (13), pressure boost valve (14), relief valve (15) and the control unit, pressure gauge (13), pressure boost valve (14) and relief valve (15) are connected with the control unit respectively.
2. A die for pressure casting of large ingots according to claim 1, characterized in that the top inner side of the ingot die (4) is provided with a spigot (16); the bottom edge of the arc-shaped cover plate (10) is positioned in the seam allowance (16).
3. A die for pressure casting of large ingots according to claim 1, wherein the arc-shaped cover plate (10) is provided with a heat-resistant gasket (11) at the contact with the ingot mold (4).
4. Pressure casting mould for large ingots according to claim 1, characterized in that the riser of the ingot mould (4) is provided with a heat insulating plate (5).
5. A die for pressure casting of large ingots according to claim 1, wherein the arc-shaped cover plate (10) is perforated and fitted with a pressure gauge (13), and the pressure gauge (13) is used for real-time monitoring of the air pressure in the ingot die (4).
6. The die for pressure casting of large ingots according to claim 1, wherein the arc-shaped cover plate (10) is perforated and is provided with a vent line for connection with an additional pump, and the vent line is provided with a pressure increasing valve (14) and a pressure relief valve (15).
7. The die for pressure casting of large ingots according to claim 1, wherein the arc-shaped cover plate (10) is provided with lifting lugs (12).
8. A die for pressure casting of large ingots according to claim 1, wherein the arc-shaped cover plate (10) is made of steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922218633.0U CN211438012U (en) | 2019-12-11 | 2019-12-11 | Pressure casting mould of large-scale steel ingot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922218633.0U CN211438012U (en) | 2019-12-11 | 2019-12-11 | Pressure casting mould of large-scale steel ingot |
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| CN211438012U true CN211438012U (en) | 2020-09-08 |
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| CN201922218633.0U Active CN211438012U (en) | 2019-12-11 | 2019-12-11 | Pressure casting mould of large-scale steel ingot |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110842160A (en) * | 2019-12-11 | 2020-02-28 | 江苏联峰能源装备有限公司 | Pressure casting die and method for large steel ingot |
| CN112157219A (en) * | 2020-10-20 | 2021-01-01 | 含山县港鉴峰铸造厂(普通合伙) | Explosion-proof device for lost foam casting |
| CN117399598A (en) * | 2023-12-14 | 2024-01-16 | 钢铁研究总院有限公司 | Method for improving solidification quality of large-size vacuum induction ingot |
-
2019
- 2019-12-11 CN CN201922218633.0U patent/CN211438012U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110842160A (en) * | 2019-12-11 | 2020-02-28 | 江苏联峰能源装备有限公司 | Pressure casting die and method for large steel ingot |
| CN112157219A (en) * | 2020-10-20 | 2021-01-01 | 含山县港鉴峰铸造厂(普通合伙) | Explosion-proof device for lost foam casting |
| CN112157219B (en) * | 2020-10-20 | 2022-06-07 | 含山县港鉴峰铸造厂(普通合伙) | Explosion-proof device for lost foam casting |
| CN117399598A (en) * | 2023-12-14 | 2024-01-16 | 钢铁研究总院有限公司 | Method for improving solidification quality of large-size vacuum induction ingot |
| CN117399598B (en) * | 2023-12-14 | 2024-05-10 | 钢铁研究总院有限公司 | Method for improving solidification quality of large-size vacuum induction ingot |
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Effective date of registration: 20210303 Address after: 215600 Hengjing village, Tangqiao town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: Suzhou sicui Welding Technology Research Institute Co.,Ltd. Address before: Yonglian, Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: JIANGSU LIANFENG ENERGY EQUIPMENT Co.,Ltd. |