CN111299543A - Electromagnetic drive low-pressure casting forming system - Google Patents
Electromagnetic drive low-pressure casting forming system Download PDFInfo
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- CN111299543A CN111299543A CN201811513424.2A CN201811513424A CN111299543A CN 111299543 A CN111299543 A CN 111299543A CN 201811513424 A CN201811513424 A CN 201811513424A CN 111299543 A CN111299543 A CN 111299543A
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- electromagnetic drive
- heat preservation
- magnetic field
- pressure casting
- pump body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/08—Controlling, supervising, e.g. for safety reasons
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The utility model provides an electromagnetic drive low pressure casting molding system, including the heat preservation stove, the magnetic field system, the electric field system, temperature control system, cooling circulation water system and control system, electric field system and magnetic field system constitute the electromagnetic drive pump body, and by control system control, aluminium liquid is stored in the heat preservation stove, heat preservation stove upper portion sets up the feed inlet, the heat preservation stove top sets up radiant heating device, the heat preservation stove lower part sets up the opening, the opening links to each other with the bottom chute of the electromagnetic drive pump body, bottom chute top is provided with the trompil, trompil department sealing connection has the stalk. The invention uses the electromagnetic driving force to replace compressed air to drive the aluminum liquid to be formed, the transmission is stable in the casting process, no turbulence and entrainment are generated, the contents of gas and slag in the aluminum liquid are low, the aluminum liquid is under the action of a magnetic field, the properties of casting structures are improved, the repeated gas adding and pressing are not needed, the aluminum liquid in the heat preservation furnace is in a sealed state, the oxidation and gas suction tendency is low, the mechanical property of the casting is improved, the production process is stable, and the product consistency is good.
Description
Technical Field
The invention relates to the technical field of low-pressure casting, in particular to an electromagnetic drive low-pressure casting forming system.
Background
Under the great trends of energy conservation, consumption reduction and light weight of automobiles, an aluminum alloy casting with low density is required to replace a ferrous metal casting with high density, the traditional cast aluminum alloy casting cannot be replaced due to the fact that the strength cannot meet the requirement, the existing aluminum casting adopts the traditional low-pressure casting technology, compressed air is used as driving power to drive aluminum liquid to complete casting, compressed air is filled into a heat preservation furnace to press the metal liquid in the heat preservation furnace, the metal liquid is driven to rise along a liquid rising pipe inserted into the heat preservation furnace, the aluminum liquid is driven to rise to the position near a mold gate, the compressed air pressure is continuously increased to drive the aluminum liquid to fill a mold cavity to form a complete contour of the casting, the pressure is continuously increased, the aluminum liquid performs feeding on the casting, oxygen in the compressed air is easy to react with the aluminum liquid in the whole process, slag is oxidized, the water gas of the compressed air is immersed into the aluminum, the defects of air holes, pinholes, slag holes and the like appear in the formed casting, the microscopic invisible defects are main factors for restricting the performance improvement of the aluminum alloy casting, so that the application of the aluminum alloy casting cannot be further expanded to the field with higher strength requirements, the traditional air pressure type low pressure casting not only can generate waste loss in a larger proportion, but also can cause aluminum burning loss and slag formation by repeatedly charging compressed air, the loss of main raw materials is increased, and the production cost is increased.
Disclosure of Invention
The invention provides a casting and forming system which adopts electromagnetic driving force to replace compressed air to drive molten aluminum to form and can improve the strength of a casting part and reduce the rejection rate of the process.
The technical scheme adopted by the invention is as follows:
an electromagnetically-driven low-pressure casting molding system comprises a heat preservation furnace, a magnetic field system, an electric field system, a temperature control system, a cooling circulating water system and a control system, wherein the electric field system and the magnetic field system form an electromagnetically-driven pump body and are controlled by the control system, molten aluminum is stored in the heat preservation furnace, a feed inlet is formed in the upper portion of the heat preservation furnace, a radiation type heating device is arranged at the top of the heat preservation furnace, an opening is formed in the lower portion of the heat preservation furnace and is connected with a bottom chute of the electromagnetically-driven pump body, an opening is formed in the top of the bottom chute, a liquid lifting pipe is connected to the opening in a sealing mode, a uniform strong electric field of the electric field system is generated by a high-power direct-current power supply and an electrode, the direct-current power supply is provided with the cooling circulating water system, the external heater is additionally arranged at the upper end of the liquid lifting pipe, and the built-in immersion heater is arranged at the lower part of the liquid lifting pipe to form a temperature control system.
The liquid lifting pipe is a ceramic pipe with the lower part being round and the lower part being provided with two square holes.
The electrodes are arranged in the square holes of the liquid lifting pipe and are in contact with the aluminum liquid.
And a temperature sensor is arranged in the heat preservation furnace.
The molten aluminum self-insulation furnace flows to the lower part of the liquid lifting pipe, and is driven by the electromagnetic force of the electromagnetic drive pump body to move upwards along the liquid lifting pipe, so that the casting punching process is realized.
The heat preservation furnace and the electromagnetic drive pump body are both arranged on a moving trolley, a horizontal walking mechanism and a vertical lifting mechanism are arranged on the moving trolley, the moving trolley moves to the position under the mold through the horizontal walking mechanism, and the vertical lifting mechanism is used for realizing the matching sealing with the mold.
The invention has the beneficial effects that: the invention uses the electromagnetic driving force to replace compressed air to drive the aluminum liquid to be formed, the transmission is stable in the casting process, no turbulence and entrainment are generated, the contents of gas and slag in the aluminum liquid are low, the aluminum liquid is under the action of a magnetic field, the properties of casting structures are improved, the repeated gas adding and pressing are not needed, the aluminum liquid in the heat preservation furnace is in a sealed state, the oxidation and gas suction tendency is low, the mechanical property of the casting is improved, the production process is stable, and the product consistency is good.
Drawings
FIG. 1 is a block diagram of an electromagnetically driven low pressure casting system of the present invention.
FIG. 2 is a schematic view of the main structure of the present invention.
Fig. 3 is a top view of the main structure of the present invention.
Fig. 4 is a schematic sectional view taken along line a-a of fig. 2.
Wherein: 1-a feed inlet; 2-holding furnace; 3-a radiant heating device; 4-an electromagnetic drive pump body; 5-a riser tube; 6-temperature sensor; 7-bottom chute; 4.1-electric field system; 4.2-magnetic field system.
Detailed Description
An electromagnetically-driven low-pressure casting molding system comprises a heat preservation furnace, a magnetic field system, an electric field system, a temperature control system, a cooling circulating water system and a control system, wherein the electric field system and the magnetic field system form an electromagnetically-driven pump body and are controlled by the control system, molten aluminum is stored in the heat preservation furnace, a feed inlet is formed in the upper portion of the heat preservation furnace, a radiation type heating device is arranged at the top of the heat preservation furnace, an opening is formed in the lower portion of the heat preservation furnace and is connected with a bottom chute of the electromagnetically-driven pump body, an opening is formed in the top of the bottom chute, a liquid lifting pipe is connected to the opening in a sealing mode, a uniform strong electric field of the electric field system is generated by a high-power direct-current power supply and an electrode, the direct-current power supply is provided with the cooling circulating water system, the external heater is additionally arranged at the upper end of the liquid lifting pipe, and the built-in immersion heater is arranged at the lower part of the liquid lifting pipe to form a temperature control system.
The liquid lifting pipe is a ceramic pipe with the lower part being round and the lower part being provided with two square holes.
The electrodes are arranged in the square holes of the liquid lifting pipe and are in contact with the aluminum liquid.
And a temperature sensor is arranged in the heat preservation furnace.
The molten aluminum self-insulation furnace flows to the lower part of the liquid lifting pipe, and is driven by the electromagnetic force of the electromagnetic drive pump body to move upwards along the liquid lifting pipe, so that the casting punching process is realized.
The heat preservation furnace and the electromagnetic drive pump body are both arranged on a moving trolley, a horizontal walking mechanism and a vertical lifting mechanism are arranged on the moving trolley, the moving trolley moves to the position under the mold through the horizontal walking mechanism, and the vertical lifting mechanism is used for realizing the matching sealing with the mold.
The present invention will be described in detail with reference to the following examples
Example 1
An electromagnetic drive low-pressure casting molding system comprises a holding furnace 2, a magnetic field system 4.2, an electric field system 4.1, a temperature control system, a cooling circulating water system and a control system, wherein the electric field system 4.1 and the magnetic field system 4.2 form an electromagnetic drive pump body 4 and are controlled by the control system, aluminum liquid is stored in the holding furnace 2, one side of the upper part of the holding furnace 2 is provided with a feed inlet 1, the top of the holding furnace 2 is provided with a radiation type heating device 3, the lower part of the holding furnace 2 is provided with an opening, the opening is connected with a bottom chute 7 of the electromagnetic drive pump body 4, the top of the bottom chute 7 is provided with an opening, a liquid lifting pipe 5 is hermetically connected at the opening, a uniform strong electric field of the electric field system 4.1 is generated by a high-power direct-current power supply and an electrode, the direct-current power supply is provided with the cooling circulating water system, the electrode is inserted into the lower part of the, an external heater is additionally arranged at the upper end of the liquid lifting pipe 5, and an internal immersion heater is arranged at the lower part of the liquid lifting pipe 5 to form a temperature control system.
The liquid lifting pipe 5 is a ceramic pipe with a round lower part and two square holes on the lower part.
The electrodes are arranged in the square holes of the liquid lifting pipe 5 and are in contact with the aluminum liquid.
The molten aluminum self-heat-preservation furnace 2 flows to the lower part of the liquid lifting pipe 5 and is driven by the electromagnetic force of the electromagnetic drive pump body 4 to move upwards along the liquid lifting pipe 5, so that the casting punching process is realized.
And a temperature sensor 6 is arranged in the holding furnace 2.
The heat preservation furnace 2 and the electromagnetic drive pump body 4 are both arranged on a moving trolley, a horizontal walking mechanism and a vertical lifting mechanism are arranged on the moving trolley, the moving trolley moves to the position under the mold through the horizontal walking mechanism, and the vertical lifting mechanism is used for realizing the matching sealing with the mold.
The aluminum liquid enters the holding furnace 2 from the feeding hole 1, and is introduced into the electromagnetically driven pump body 4 through the bottom side opening of the holding furnace 2 and the bottom chute 7 connected with the bottom side opening, and the electromagnetically driven pump body 4 can generate an orthogonal stable uniform magnetic field and a parametrically controlled direct-current uniform electric field to generate a driving acting force to promote the aluminum liquid to move directionally; aluminum liquid enters the die along a ceramic riser tube 5 with a round upper part at the lower part to drive the aluminum liquid to fill the die to form a complete outline of a casting, electromagnetic driving force is continuously assumed, the aluminum liquid is used for feeding the casting, pressure is removed, the aluminum liquid in the riser tube 5 flows back into a heat preservation furnace 2 to complete casting, die sinking and part taking are carried out, the liquid lifting, the die washing, the pressure maintaining and the cooling processes in the whole process all have control systems to operate automatically according to the preset setting and are linked with casting equipment, an electromagnet of a magnetic field system 4.2 is vertically arranged on the horizontal plane of an electrode, the electromagnet and a magnetic field direct current power supply thereof are respectively provided with a cooling circulating water system, a uniform electric field of the electric field system 4.1 is generated by a high-power direct current power supply and the electrode, the direct current power supply is provided with the cooling circulating water system, the whole system realizes parameter change of the casting die washing process by controlling the change of, The temperature sensing device and the cooling circulating water system jointly act to ensure the temperature balance of the whole system, repeated inflation and pressurization are not needed in the holding furnace 2, oxidation and air suction of aluminum liquid are prevented, and a precondition guarantee is provided for manufacturing a high-strength aluminum alloy casting with extremely low slag/gas content, so that the tensile strength of the product is improved by 15-20%, the elongation is improved by 20-35%, and the rejection rate is greatly reduced.
Claims (6)
1. An electromagnetic drive low-pressure casting molding system is characterized by comprising a holding furnace (2), a magnetic field system (4.2), an electric field system (4.1), a temperature control system, a cooling circulating water system and a control system, wherein the electric field system (4.1) and the magnetic field system (4.2) form a magnetic) drive pump body (4) and are controlled by the control system, aluminum liquid is stored in the holding furnace (2), a feeding hole (1) is formed in one side of the upper part of the holding furnace (2), a radiation type heating device (3) is arranged at the top of the holding furnace (2), an opening is formed in the lower part of the holding furnace (2) and is connected with a bottom chute (7) of the electromagnetic drive pump body (4), an opening is formed in the top of the bottom chute (7), a liquid lifting pipe (5) is hermetically connected to the opening, a strong electric field of the electric field system (4.1) is generated by a high-power direct-current power supply and, the electrode is inserted into the lower part of the liquid lifting pipe (5), the electromagnet of the magnetic field system (4.2) is vertically arranged on the horizontal plane where the electrode is positioned, the electromagnet and the direct current power supply of the magnetic field of the electromagnet are both provided with a cooling circulating water system, the upper end of the liquid lifting pipe (5) is additionally provided with an external heater, and the lower part of the liquid lifting pipe (5) is provided with a built-in immersion heater to form a temperature control system.
2. The electromagnetic drive low-pressure casting molding system as set forth in claim 1, wherein the lift pipe (5) is a ceramic pipe having a lower part rounded at the upper part and a lower part provided with two square holes.
3. The electromagnetic drive low-pressure casting molding system as set forth in claim 2, wherein the electrodes are disposed in the square holes of the lift pipe 5, and the electrodes are in contact with the molten aluminum.
4. The electromagnetic drive low-pressure casting molding system as claimed in claim 2 or 3, wherein the molten aluminum self-insulation furnace (2) is communicated to the lower position of the lift pipe (5) and is driven by the electromagnetic force of the electromagnetic drive pump body (4) to move upwards along the lift pipe (5) to realize the punching process of casting.
5. The electromagnetic drive low-pressure casting molding system according to claim 1, wherein a temperature sensor (6) is provided in the holding furnace (2).
6. The electromagnetic drive low-pressure casting molding system as set forth in claim 1, wherein the holding furnace (2) and the electromagnetic drive pump body (4) are both disposed on a moving trolley, the moving trolley is provided with a horizontal traveling mechanism and a vertical lifting mechanism, the horizontal traveling mechanism moves to a position right below the mold, and the vertical lifting mechanism is used for realizing the matching sealing with the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811513424.2A CN111299543A (en) | 2018-12-11 | 2018-12-11 | Electromagnetic drive low-pressure casting forming system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811513424.2A CN111299543A (en) | 2018-12-11 | 2018-12-11 | Electromagnetic drive low-pressure casting forming system |
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| Publication Number | Publication Date |
|---|---|
| CN111299543A true CN111299543A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811513424.2A Pending CN111299543A (en) | 2018-12-11 | 2018-12-11 | Electromagnetic drive low-pressure casting forming system |
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| CN (1) | CN111299543A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770317A (en) * | 2021-09-06 | 2021-12-10 | 北京三未科技发展有限公司 | Efficient electromagnetic casting device and using method |
| CN113927018A (en) * | 2021-10-20 | 2022-01-14 | 北京三未科技发展有限公司 | Electrostatic spraying casting forming system and using method |
| CN114769552A (en) * | 2022-05-09 | 2022-07-22 | 天津海特智能装备有限公司 | Antigravity casting apparatus using electromagnetic pump |
-
2018
- 2018-12-11 CN CN201811513424.2A patent/CN111299543A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770317A (en) * | 2021-09-06 | 2021-12-10 | 北京三未科技发展有限公司 | Efficient electromagnetic casting device and using method |
| CN113927018A (en) * | 2021-10-20 | 2022-01-14 | 北京三未科技发展有限公司 | Electrostatic spraying casting forming system and using method |
| CN113927018B (en) * | 2021-10-20 | 2023-07-21 | 北京三未科技发展有限公司 | Casting molding system for electrostatic spraying and application method |
| CN114769552A (en) * | 2022-05-09 | 2022-07-22 | 天津海特智能装备有限公司 | Antigravity casting apparatus using electromagnetic pump |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200619 |
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| WD01 | Invention patent application deemed withdrawn after publication |