CN115608965A - Anti-gravity light alloy pouring method with ultrasonic mechanism - Google Patents
Anti-gravity light alloy pouring method with ultrasonic mechanism Download PDFInfo
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- CN115608965A CN115608965A CN202211350270.6A CN202211350270A CN115608965A CN 115608965 A CN115608965 A CN 115608965A CN 202211350270 A CN202211350270 A CN 202211350270A CN 115608965 A CN115608965 A CN 115608965A
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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
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
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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
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
Abstract
The invention discloses a counter-gravity light alloy pouring method with an ultrasonic mechanism, which relates to a counter-gravity light alloy pouring method and aims to solve the problem that casting structures and properties cannot meet technical requirements due to the fact that a small amount of impurities, shrinkage porosity and coarse grains occur during counter-gravity pouring in the prior art, and the method is realized according to the following steps: the method comprises the following steps: placing alloy liquid in an alloy liquid crucible, and arranging an ultrasonic probe at the top of a cavity of a casting mold; step two: the alloy liquid in the alloy liquid crucible is introduced into the casting mold of the upper tank body through the liquid lifting pipe by the pressure of the lower tank body, when the alloy liquid in the casting mold is contacted with the ultrasonic probe, the ultrasonic generator is controlled to work by the controller, and the alloy liquid in the casting mold is subjected to pulse forming by the ultrasonic probe; step three: and when the alloy liquid in the casting mold reaches the height, maintaining the pressure of the lower tank body through the lower tank body, so that the alloy liquid in the casting mold is stably formed. The invention is applied to the field of alloy casting molding.
Description
Technical Field
The invention relates to an anti-gravity light alloy pouring method, in particular to an anti-gravity light alloy pouring method with an ultrasonic mechanism, which is applied to the field of alloy pouring molding.
Background
With the development of science and technology, the requirements on industrial products are higher and higher. The antigravity pouring has unique advantages on the forming of various light alloy castings, the light alloys comprise magnesium alloys and aluminum alloys, and the light alloys are applied to important industrial departments such as aviation, aerospace, weapons, automobiles and the like. Although, the counter-gravity casting of low pressure, differential pressure and the like has been applied and developed for many years, the counter-gravity casting is applied and developed in easily oxidized alloys, alloy systems with wide crystallization intervals and castings with thin walls and complex structures. Still, there are a few inclusions, shrinkage porosity and coarse grains, etc. defect occasionally appears, cause the cast structure and performance to can't meet the technical requirement.
Disclosure of Invention
The invention aims to solve the problem that the casting structure and performance can not meet the technical requirements due to the defects of small amount of inclusion, shrinkage porosity and coarse grains in the counter-gravity pouring process in the prior art, and further provides counter-gravity pouring equipment with an ultrasonic mechanism and a pouring method of the equipment.
The technical scheme adopted by the invention for solving the problems is as follows:
the anti-gravity light alloy casting method with the ultrasonic mechanism is realized according to the following steps:
the method comprises the following steps: arranging an alloy liquid crucible in a lower tank body, arranging a middle partition plate on the lower tank body, arranging a casting mold on the middle partition plate, arranging a liquid lifting pipe at the bottom end of the casting mold, arranging the bottom end of the liquid lifting pipe in the alloy liquid crucible, placing alloy liquid in the alloy liquid crucible, arranging an upper tank body on the middle partition plate, and arranging an ultrasonic probe at the top of a cavity of the casting mold;
step two: adding gas into the lower tank body, enabling the alloy liquid in the alloy liquid crucible to enter the casting mold of the upper tank body through the liquid lifting pipe under the pressure of the lower tank body, controlling the ultrasonic generator to work through the controller when the alloy liquid in the casting mold is in contact with the ultrasonic probe, and carrying out pulse forming on the alloy liquid in the casting mold through the ultrasonic probe;
step three: and when the alloy liquid in the casting mold reaches the height, maintaining the pressure of the lower tank body through the lower tank body to stabilize the alloy liquid in the casting mold, thereby completing the counter-gravity casting molding work.
The invention has the beneficial effects that:
1. the structural equipment of the invention applies ultrasonic vibration in the counter-gravity pouring and casting solidification processes, and interferes with the common counter-gravity filling, crystallization and feeding processes of molten metal. Impurities mixed in the liquid metal can be separated from the alloy liquid under the action of ultrasonic waves, the metal liquid is purified, the defect of inclusion of the castings is reduced, and the quality of the castings is improved. The fluidity and the filling property of the molten metal can be improved, and the formability of a thin-wall and complex-structure casting is enhanced. In the crystallization process, the primary crystal can be promoted to break, the nucleation probability is increased, the crystal grains are refined, and the mechanical property of the casting is improved. Can lead to the occurrence of dendrite breakage during crystallization, widen a liquid feeding channel, improve the feeding effect and improve the compactness of a casting.
2. The casting machine is applied to various antigravity casting machines, counter-pressure casting machines, low-pressure casting machines and pressure-regulating casting machines. And an ultrasonic generator with proper power is selected to be placed on the casting mold, so that the ultrasonic probe is contacted with a pouring gate of a pouring system of the casting, a riser of a feeding system or molten metal at other parts, and the whole process of filling the casting mold with liquid metal, crystallizing alloy and solidifying and feeding the casting is disturbed by using ultrasonic vibration.
3. The application can improve the fluidity and the filling property of molten metal under the action of ultrasonic waves, and enhances the formability of thin-wall and complex-structure castings.
4. The method can promote the primary crystal to break under the action of ultrasonic waves, increase the nucleation probability, refine crystal grains and improve the mechanical property of the casting.
5. This application can make the impurity of mixing in liquid metal separate out like nonmetal, metallic oxide from the alloy liquid under the ultrasonic wave effect, and the purification metal liquid reduces foundry goods inclusion defect, improves the foundry goods quality.
6. Under the action of ultrasonic wave, dendritic crystal breaking can occur during crystallization, liquid feeding channels are widened, feeding effect is improved, and casting compactness is improved.
Drawings
FIG. 1 is a schematic view of the antigravity casting apparatus of the present application.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, and the light alloy antigravity casting equipment with an ultrasonic mechanism comprises a lower tank body 1, an alloy liquid crucible 2, a liquid lifting pipe 3 and an upper tank body 4; it also comprises a casting mould 5, an ultrasonic mechanism and a controller 9; the alloy liquid crucible is arranged in the lower tank body 1, the middle partition plate is arranged on the lower tank body 1, the casting mold 5 is arranged on the middle partition plate, a pipe hole in the top end of the liquid lifting pipe 3 is communicated with a liquid inlet hole of the casting mold 5 in a sealing mode, a flange of the liquid lifting pipe 3 is arranged on the middle partition plate in a sealing mode, the bottom end of the liquid lifting pipe 3 is arranged in the alloy liquid crucible 2, the upper tank body 4 is arranged above the middle partition plate, the upper tank body 4, the middle partition plate and the lower tank body 1 are arranged in a sealing mode, the ultrasonic mechanism is arranged on the casting mold 5, and the ultrasonic mechanism penetrates through the top of the upper tank body 4 through a connecting line to be connected with the controller 9.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1, and the present embodiment is different from the present embodiment in that the ultrasonic mechanism includes an ultrasonic generator 8 and a plurality of ultrasonic probes 7; each ultrasonic probe 7 is arranged at the top of the cavity 6 of the casting mould 5, each ultrasonic probe 7 is connected with an ultrasonic generator 8 through a connecting wire, and the ultrasonic generator 8 is connected with a controller 9 through a connecting wire. Other components and connection modes are the same as those of the first embodiment.
The third concrete implementation mode: the embodiment is described with reference to fig. 1, and the difference between the embodiment and the specific embodiment is that the embodiment further comprises a locking ring and two sealing rings, one sealing ring is arranged between the middle partition plate and the lower tank body 1, one sealing ring is arranged between the upper tank body 4 and the middle partition plate, and the upper tank body 4, the middle partition plate and the lower tank body 1 are locked and sealed by the locking ring. Other components and connection modes are the same as those of the first embodiment.
The fourth concrete implementation mode is as follows: the embodiment is described with reference to fig. 1, and the method for pouring the light alloy by counter-gravity with the ultrasonic mechanism of the embodiment is realized by the following steps:
the method comprises the following steps: arranging an alloy liquid crucible 2 in a lower tank body 1, arranging a middle partition plate on the lower tank body 1, arranging a casting mold 5 on the middle partition plate, arranging a liquid lifting pipe 3 at the bottom end of the casting mold 5, arranging the bottom end of the liquid lifting pipe 3 in the alloy liquid crucible 2, placing alloy liquid in the alloy liquid crucible 2, arranging an upper tank body 4 on the middle partition plate, and arranging an ultrasonic probe 7 at the top of a cavity 6 of the casting mold 5;
step two: adding gas into the lower tank body 1, enabling the alloy liquid in the alloy liquid crucible 2 to enter the casting mold 5 of the upper tank body 4 through the liquid lifting pipe 3 by the pressure of the lower tank body 1, controlling the ultrasonic generator 8 to work through the controller 9 when the alloy liquid in the casting mold 5 is contacted with the ultrasonic probe 7, and carrying out pulse forming on the alloy liquid in the casting mold 5 through the ultrasonic probe 7;
step three: and when the alloy liquid in the casting mold 5 reaches the height, maintaining the pressure of the lower tank body 1 through the lower tank body 1 to stabilize the alloy liquid in the casting mold 5, and further completing the anti-gravity casting molding work.
Claims (1)
1. The anti-gravity light alloy casting method with the ultrasonic mechanism is characterized by comprising the following steps of: the method is realized according to the following steps:
the method comprises the following steps: arranging an alloy liquid crucible (2) in a lower tank body (1), arranging a middle partition plate on the lower tank body (1), arranging a casting mold (5) on the middle partition plate, arranging a liquid lifting pipe (3) at the bottom end of the casting mold (5), arranging the bottom end of the liquid lifting pipe (3) in the alloy liquid crucible (2), placing alloy liquid in the alloy liquid crucible (2), arranging an upper tank body (4) on the middle partition plate, and arranging an ultrasonic probe (7) at the top of a cavity (6) of the casting mold (5);
step two: the pressure is increased in the lower tank body (1), the alloy liquid in the alloy liquid crucible (2) enters the casting mold (5) of the upper tank body (4) through the liquid lifting pipe (3) by the pressure of the lower tank body (1), when the alloy liquid in the casting mold (5) is contacted with the ultrasonic probe (7), the ultrasonic generator (8) is controlled to work through the controller (9), and the alloy liquid in the casting mold (5) is subjected to pulse forming through the ultrasonic probe (7);
step three: and when the alloy liquid in the casting mold (5) reaches the height, the lower tank body (1) is pressurized through the lower tank body (1), so that the alloy liquid in the casting mold (5) is stable, and further the counter-gravity casting molding work is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211350270.6A CN115608965A (en) | 2022-10-31 | 2022-10-31 | Anti-gravity light alloy pouring method with ultrasonic mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211350270.6A CN115608965A (en) | 2022-10-31 | 2022-10-31 | Anti-gravity light alloy pouring method with ultrasonic mechanism |
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| CN115608965A true CN115608965A (en) | 2023-01-17 |
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| CN202211350270.6A Pending CN115608965A (en) | 2022-10-31 | 2022-10-31 | Anti-gravity light alloy pouring method with ultrasonic mechanism |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090192388A1 (en) * | 2008-01-25 | 2009-07-30 | Norihiro Yamada | Ultrasonic transmission member |
| CN103071777A (en) * | 2012-12-27 | 2013-05-01 | 南昌航空大学 | Supersonic vibration based vacuum counter-pressure casting device and air path system thereof |
| CN104001900A (en) * | 2013-12-06 | 2014-08-27 | 哈尔滨东安发动机（集团）有限公司 | Multifunctional antigravity casting physical simulation device |
| CN106563786A (en) * | 2016-10-30 | 2017-04-19 | 山西汾西重工有限责任公司 | Differential pressure pouring casting method of particle reinforced aluminum-based composite material |
| CN109351952A (en) * | 2018-11-22 | 2019-02-19 | 杭州电子科技大学 | A kind of test ultrasonic wave is to the method and device thereof of molten metal Grain Refinement Effect |
| US20200316676A1 (en) * | 2019-04-05 | 2020-10-08 | GM Global Technology Operations LLC | Method of manufacturing metal castings |
| CN111822672A (en) * | 2020-06-22 | 2020-10-27 | 北京航空航天大学 | Local high pressure boost and refine device and adopt device's antigravity casting equipment |
-
2022
- 2022-10-31 CN CN202211350270.6A patent/CN115608965A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090192388A1 (en) * | 2008-01-25 | 2009-07-30 | Norihiro Yamada | Ultrasonic transmission member |
| CN103071777A (en) * | 2012-12-27 | 2013-05-01 | 南昌航空大学 | Supersonic vibration based vacuum counter-pressure casting device and air path system thereof |
| CN104001900A (en) * | 2013-12-06 | 2014-08-27 | 哈尔滨东安发动机（集团）有限公司 | Multifunctional antigravity casting physical simulation device |
| CN106563786A (en) * | 2016-10-30 | 2017-04-19 | 山西汾西重工有限责任公司 | Differential pressure pouring casting method of particle reinforced aluminum-based composite material |
| CN109351952A (en) * | 2018-11-22 | 2019-02-19 | 杭州电子科技大学 | A kind of test ultrasonic wave is to the method and device thereof of molten metal Grain Refinement Effect |
| US20200316676A1 (en) * | 2019-04-05 | 2020-10-08 | GM Global Technology Operations LLC | Method of manufacturing metal castings |
| CN111822672A (en) * | 2020-06-22 | 2020-10-27 | 北京航空航天大学 | Local high pressure boost and refine device and adopt device's antigravity casting equipment |
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