CN209886648U - Plasma constant-temperature negative pressure up-suction pouring equipment - Google Patents
Plasma constant-temperature negative pressure up-suction pouring equipment Download PDFInfo
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- CN209886648U CN209886648U CN201920352378.6U CN201920352378U CN209886648U CN 209886648 U CN209886648 U CN 209886648U CN 201920352378 U CN201920352378 U CN 201920352378U CN 209886648 U CN209886648 U CN 209886648U
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Abstract
The utility model discloses a plasma constant temperature negative pressure upper suction casting device, which mainly comprises a crucible furnace, wherein a suction casting area and a heating area are sequentially arranged above the crucible furnace, and one side of the heating area is hinged with a furnace body front cover; the heating area is provided with a plasma heating device; the suction and injection area is covered with a cooling plate, the bottom of the cooling plate is connected with a suction pipe, a golden bell jar is arranged above the cooling plate, a sand mold is arranged in the golden bell jar, a vacuum pumping pipeline is arranged above the golden bell jar, and a mold cavity flow path of the sand mold is communicated with the top end of the suction pipe; and a gland mechanism is arranged on a mold cavity flow path of the sand mold, and a pressure release valve is arranged at the upper end of the gold bell jar. The utility model provides a plasma constant temperature negative pressure updraught casting equipment, pouring temperature control is accurate, and the pouring is effectual.
Description
Technical Field
The utility model relates to a pouring process technical field especially relates to a plasma constant temperature negative pressure updraught pouring equipment and method thereof.
Background
The casting pouring mode mainly comprises the following steps: tilting, bottom pouring. Because the above method is easy to generate defects of sand washing, air entrainment and the like in the pouring process, most importantly, the temperature is not easy to control in the pouring process, the pouring temperature range is large, the casting quality is seriously influenced, and the service life of a pouring ladle is shortened. Therefore, it is an urgent matter to change the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a plasma constant temperature negative pressure updraught casting equipment to solve the problem that above-mentioned prior art exists, make pouring temperature control accurate, the pouring is effectual.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a plasma constant temperature negative pressure upper suction casting device, which comprises a crucible furnace, wherein a suction casting area and a heating area are sequentially arranged above the crucible furnace, and one side of the heating area is hinged with a furnace body front cover; the heating area is provided with a plasma heating device; the suction and injection area is covered with a cooling plate, the bottom of the cooling plate is connected with a suction pipe, a golden bell jar is arranged above the cooling plate, a sand mold is arranged in the golden bell jar, a vacuum pumping pipeline is arranged above the golden bell jar, and a mold cavity flow path of the sand mold is communicated with the top end of the suction pipe; and a gland mechanism is arranged on a mold cavity flow path of the sand mold, and a pressure release valve is arranged at the upper end of the gold bell jar.
Optionally, a plasma heating electrode is arranged in the plasma heating device, and the plasma heating electrode can penetrate through the heating region and be inserted into the crucible furnace.
Optionally, a rotating shaft is disposed at one end of the heating region, and the plasma heating device is mounted on the rotating shaft.
Optionally, the heating region is provided with a continuous temperature probe hole, and a temperature probe is installed in the continuous temperature probe hole.
Optionally, the rotating shaft is in an inverted L-shaped structure.
Optionally, a heating region monitoring hole is formed in one end of the heating region, which is far away from the rotating shaft.
The utility model also provides a plasma constant temperature negative pressure updraught casting method, including following step:
the first step is as follows: adding molten steel into a crucible furnace, inserting a plasma heating electrode into the molten steel, detecting the temperature of the molten steel according to a temperature measuring probe, and accurately controlling the input of heating power through a plasma heating device so as to keep the temperature of the molten steel within a target temperature range;
the second step is that: the bottom end of the suction pipe extends into the molten steel;
the third step: forming a communicated air channel on the vacuumizing pipeline and the sand mold, and placing the sand mold on a cooling plate to enable a flow path device of a mold cavity of the sand mold to be communicated with the top end of the suction pipe;
the fourth step: covering the gold bell cover above the sand mold and the cooling plate, extracting air in the gold bell cover, reducing the air pressure in the cover body and the mold cavity, sucking up molten steel through a suction pipe, and enabling the molten steel to flow into the mold cavity;
the fifth step: the molten steel between the flow path of the die cavity and the suction pipe is blocked by the gland mechanism, and the negative pressure state of air in the gold bell jar is released by the pressure release valve, so that part of the molten steel flows back to the crucible furnace; taking the sand mold away to complete one cycle;
and a sixth step: the rotating shaft rotates 90 degrees, and the crucible furnace body is lifted away to complete the replacement of the furnace body.
The utility model discloses for prior art gain following technological effect:
the utility model discloses in the negative pressure updraught pouring in-process, with the mode of molten steel heating by original intermediate frequency induction heating, change into and insert graphite electrode with plasma in the molten steel and heat to with the furnace body by original straight section of thick bamboo shape, change the ship type into, divide into 3 work areas, realized the continuous detection to the temperature, continuous control and record, and add the molten steel in-process at the furnace body, can realize inhaling in succession and annotate. By changing the heating mode, the scouring of the molten steel to the furnace body is reduced, thereby greatly prolonging the service life of the furnace body. Meanwhile, the rolling of the molten steel is reduced, so that slag in the molten steel is easy to float upwards and does not enter a casting, thereby improving the mechanical property.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of the plasma constant temperature negative pressure up-draft casting device of the present invention;
FIG. 2 is a schematic structural view of a plasma heating device and a crucible furnace of the plasma constant-temperature negative-pressure upper-suction casting device of the utility model;
description of reference numerals: 1. a furnace body front cover; 2. a plasma heating electrode; 3. a metallic bell jar; 4. a vacuum pipeline is pumped; 5. a capping mechanism; 6. sand molding; 7. a pressure relief valve; 8. suction and injection areas; 9. a continuous thermometric probe hole; 10. a plasma heating device; 11. a rotating shaft; 12. a cooling plate; 13. heating the area to monitor the hole; 14. a crucible furnace; 15. heating the area.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a plasma constant temperature negative pressure updraught casting equipment to solve the problem that above-mentioned prior art exists, make pouring temperature control accurate, the pouring is effectual.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The utility model provides a plasma constant temperature negative pressure upper suction casting device, as shown in figure 1 and figure 2, comprising a crucible furnace 14, wherein a suction casting area 8 and a heating area 15 are arranged above the crucible furnace 14 in sequence, and a furnace body front cover 1 is hinged on one side of the heating area 15; one end of the heating area 15 is provided with a plasma heating device 10; a cooling plate 12 is covered on the suction and injection area 8, the bottom of the cooling plate 12 is connected with a suction pipe, a sealed golden bell jar 3 is arranged above the cooling plate 12, a sand mold 6 is arranged in the golden bell jar 3, a vacuum pumping pipeline 4 is arranged above the golden bell jar 3, and a mold cavity flow path of the sand mold 6 is communicated with the top end of the suction pipe; a gland mechanism 5 is arranged on a cavity flow path of the sand mold 6, and a pressure release valve 7 is arranged at the upper end of the gold bell jar 3.
Further preferably, a plasma heating electrode 2 is provided in the plasma heating apparatus 10, and the plasma heating electrode 2 is inserted into the crucible furnace 14 through the heating region 15. One end of the heating region 15 is provided with a rotating shaft 11 having an inverted "L" shape, and the plasma heating device 10 is mounted on the rotating shaft 11. The heating area 15 is provided with a continuous temperature probe hole 9, and a temperature probe is arranged in the continuous temperature probe hole 9. A heating area monitoring hole 13 is opened at one end of the heating area 15 away from the rotary shaft 11.
The utility model also provides a plasma constant temperature negative pressure updraught casting method, including following step:
the first step is as follows: molten steel is added into a crucible furnace 14 through a soup adding port on a furnace body front cover 1, a plasma heating device 10 with an electrode is arranged above the crucible furnace 14, a plasma heating electrode 2 is inserted into the molten steel in the crucible furnace 14, the temperature of the molten steel can be detected according to a continuous temperature measuring probe, the input of heating power is accurately controlled through the plasma heating device 10, the temperature of the molten steel is kept within a target temperature range, and meanwhile, the molten steel condition in the crucible furnace 14 can be observed through a heating region monitoring hole 13.
The second step is that: covering a cooling plate 12 with a suction pipe on the top end of the suction injection area 8; molten steel is contained in the crucible furnace 14, and the bottom end of the suction pipe extends into the molten steel;
the third step: forming an air channel communicated with the vacuumizing pipeline 4 and the sand mould 6, and placing the sand mould 6 on a cooling plate 12 to ensure that a flow path device of a mould cavity of the sand mould 6 is communicated with the top end of a suction pipe;
the fourth step: covering the gold bell jar 3 above the sand mold 6 and the cooling plate 12, extracting air in the cover body to reduce the air pressure in the cover body and the mold cavity, and sucking up molten steel through a suction pipe to make the molten steel flow into the mold cavity;
the fifth step: the molten steel between the flow path and the suction pipe is blocked by the gland mechanism 5, and the air negative pressure state in the cover body is relieved by the pressure relief valve 7, so that part of the molten steel flows back to the crucible furnace 14; taking the sand mold away to complete one cycle;
and a sixth step: when the furnace body is replaced, the furnace body is rotated by 90 degrees through the rotating shaft 11, and the furnace body of the crucible furnace 14 is lifted away.
By adopting the technical scheme, the utility model not only can pour castings, but also solves the problem of accurately controlling the temperature in the casting forming process; in addition, the problems of oxidation of molten steel and bad casting caused by steel slag are reduced, the problem of overhigh suction and injection temperature can be solved, the energy consumption is reduced, the loss and the replacement frequency of refractory materials are reduced, the mechanical property of the casting is improved, the cost is reduced, the service life of the crucible furnace is prolonged, and the production efficiency is improved.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. The utility model provides a plasma constant temperature negative pressure updraught casting equipment which characterized in that: the crucible furnace comprises a crucible furnace, wherein a suction injection region and a heating region are sequentially arranged above the crucible furnace, and a furnace body front cover is hinged to one side of the heating region; the heating area is provided with a plasma heating device; the suction and injection area is covered with a cooling plate, the bottom of the cooling plate is connected with a suction pipe, a golden bell jar is arranged above the cooling plate, a sand mold is arranged in the golden bell jar, a vacuum pumping pipeline is arranged above the golden bell jar, and a mold cavity flow path of the sand mold is communicated with the top end of the suction pipe; and a gland mechanism is arranged on a mold cavity flow path of the sand mold, and a pressure release valve is arranged at the upper end of the gold bell jar.
2. The plasma constant-temperature negative-pressure up-draft casting equipment as claimed in claim 1, wherein: and a plasma heating electrode is arranged in the plasma heating device and can penetrate through the heating area to be inserted into the crucible furnace.
3. The plasma constant-temperature negative-pressure up-draft casting equipment as claimed in claim 2, wherein: one end of the heating area is provided with a rotating shaft, and the plasma heating device is arranged on the rotating shaft.
4. The plasma constant-temperature negative-pressure up-draft casting equipment as claimed in claim 1, wherein: the heating area is provided with a continuous temperature probe hole, and a temperature probe is arranged in the continuous temperature probe hole.
5. The plasma constant-temperature negative-pressure up-draft casting device according to claim 3, wherein: the rotating shaft is in an inverted L-shaped structure.
6. The plasma constant-temperature negative-pressure up-draft casting device according to claim 3, wherein: and one end of the heating area, which is far away from the rotating shaft, is provided with a heating area monitoring hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920352378.6U CN209886648U (en) | 2019-03-20 | 2019-03-20 | Plasma constant-temperature negative pressure up-suction pouring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920352378.6U CN209886648U (en) | 2019-03-20 | 2019-03-20 | Plasma constant-temperature negative pressure up-suction pouring equipment |
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| CN209886648U true CN209886648U (en) | 2020-01-03 |
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| CN201920352378.6U Active CN209886648U (en) | 2019-03-20 | 2019-03-20 | Plasma constant-temperature negative pressure up-suction pouring equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014135A (en) * | 2019-03-20 | 2019-07-16 | 天津新伟祥工业有限公司 | Casting equipment and its method are inhaled in a kind of plasma constant temperature negative pressure |
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2019
- 2019-03-20 CN CN201920352378.6U patent/CN209886648U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014135A (en) * | 2019-03-20 | 2019-07-16 | 天津新伟祥工业有限公司 | Casting equipment and its method are inhaled in a kind of plasma constant temperature negative pressure |
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