CN214349531U - Aluminum alloy low pressure casting protection device - Google Patents
Aluminum alloy low pressure casting protection device Download PDFInfo
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- CN214349531U CN214349531U CN202023188410.3U CN202023188410U CN214349531U CN 214349531 U CN214349531 U CN 214349531U CN 202023188410 U CN202023188410 U CN 202023188410U CN 214349531 U CN214349531 U CN 214349531U
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- sealing cover
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- aluminum alloy
- protective gas
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Abstract
The utility model discloses an aluminum alloy low-pressure casting protection device, which comprises a sealing cover, wherein the sealing cover is arranged on a casting platform through a sealing component, and a sealing space for accommodating a casting assembly body is formed between the sealing cover and the casting platform; the sealing cover is connected with a protective gas inlet assembly and a pressure relief valve, protective gas is conveyed into the sealed space through the protective gas inlet assembly, and air in the sealed space is exhausted through the pressure relief valve by utilizing the protective gas; the utility model discloses can get rid of oxygen with the protective gas, realize that the aluminum alloy low pressure casting under the protective gas atmosphere protection fills the type, reduced the aluminum alloy and filled the oxidation of type in-process, improve the foundry goods quality.
Description
Technical Field
The utility model relates to a protection device, specific theory relates to an aluminum alloy low pressure casting protection device, belongs to aluminum alloy casting technical field.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the casting process of the aluminum alloy, the aluminum alloy is in contact with oxygen in the air to cause oxidation to generate metal oxide, and in the mold filling process, the metal oxide can block the flow of molten metal, so that the oxidation probability in the mold filling process is increased, and the defects of oxidation slag inclusion are easily generated.
The vacuum casting is beneficial to discharging gas in a casting mould, inhibits the generation of turbulence and entrainment, and obviously improves the mould filling capacity of molten metal, so a vacuum casting machine is usually adopted for casting in order to avoid the generation of oxides in the mould filling process, and the vacuum suction casting, the vacuum low-pressure casting and the vacuum counter-pressure casting are common at present; however, because vacuum casting has high requirements on sealing conditions, and low-pressure casting, centrifugal casting and gravity casting are difficult to realize complete sealing, partial oxidation may still exist in actual production. Therefore, a real anti-oxidation device is urgently needed, and oxidation in the aluminum alloy mold filling process can be reduced.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to above not enough, provide an aluminum alloy low pressure casting protection device, can get rid of oxygen with the protective gas, realize that the aluminum alloy low pressure casting under the protective gas atmosphere fills the type, reduced the aluminum alloy and filled the oxidation of type in-process, improve the foundry goods quality.
For solving the technical problem, the utility model discloses a following technical scheme: the aluminum alloy low-pressure casting protection device comprises a sealing cover, wherein the sealing cover is arranged on a casting platform through a sealing assembly, and a sealing space for accommodating a casting assembly body is formed between the sealing cover and the casting platform;
the air-tight cover is connected with a protective air inlet assembly and a pressure relief valve, protective air is conveyed into the sealed space through the protective air inlet assembly, and the air in the sealed space is discharged through the pressure relief valve by utilizing the protective air.
Further, the air exhaust valve is further included and arranged on the side of the sealing cover.
Further, the pressure relief valve is arranged at the bottom of the sealing cover.
Further, seal assembly includes sealing washer and seal groove, the seal groove is established on the contact surface of seal cover and casting platform the sealing washer sets up in the seal groove.
Furthermore, a plurality of fastening pressing plates are arranged between the sealing cover and the casting platform, and the plurality of fastening pressing plates are uniformly arranged along the circumferential direction of the sealing cover.
Furthermore, the protection gas inlet assembly comprises a protection gas tank and a quick-connection-peg, the quick-connection-peg is fixed on the sealing cover, the protection gas tank is connected with the quick-connection-peg through a protection gas pipe, and the protection gas pipe is provided with a gas inlet valve.
Further, still include test probe, test probe is used for detecting the protective gas content, test probe establishes in the inside one side that is close to the relief valve of sealed cowling.
Furthermore, one side of the top of the sealing cover is provided with an observation hole.
Furthermore, the bottom surface of the sealing cover and the top surface of the casting platform are both provided with grooves, and the grooves formed in the sealing cover and the grooves formed in the casting platform are oppositely arranged to form sealing grooves.
The utility model adopts the above technical scheme after, compare with prior art, have following advantage:
the utility model discloses can get rid of oxygen with the protective gas, realize that the aluminum alloy low pressure casting under the protective gas atmosphere fills the type, reduced the aluminum alloy and filled the oxidation of type in-process, improve the foundry goods quality.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure, the position of the upper end of the main shaft,
1-sealing cover, 2-casting platform, 3-protective gas tank, 4-protective gas pipe, 5-gas inlet valve, 6-pressure relief valve, 7-gas outlet valve, 8-quick connector, 9-observation hole, 10-sealing groove, 11-detection probe, 12-fastening pressure plate, 13-sealing ring and 14-casting assembly body.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In the present invention, terms such as "connect" and the like should be understood in a broad sense, and mean either directly or indirectly through an intermediary. The meaning of the above terms in the present invention can be determined according to specific situations by persons skilled in the art, and should not be construed as limiting the present invention.
The utility model provides an aluminum alloy low-pressure casting protection device, which comprises a sealing cover, wherein the sealing cover is arranged on a casting platform through a sealing component, and a sealing space for accommodating a casting assembly body is formed between the sealing cover and the casting platform; the sealing cover is connected with a protective gas inlet assembly and a pressure relief valve, protective gas is conveyed into the sealed space through the protective gas inlet assembly, and the air in the sealed space is discharged through the pressure relief valve by utilizing the protective gas. The protective gas inlet assembly comprises a protective gas tank and a quick-connection-peg, the quick-connection-peg is fixed on the sealing cover, the protective gas tank is connected with the quick-connection-peg through a protective gas pipe, and the protective gas pipe is provided with an air inlet valve; the exhaust valve is arranged on the side part of the sealing cover; the pressure relief valve is arranged at the bottom of the sealing cover.
Example 1
As shown in fig. 1, the utility model provides an aluminum alloy low-pressure casting protection device, the shielding gas in this embodiment is specifically nitrogen gas, this embodiment specifically includes a seal cover 1, a shielding gas inlet assembly, a shielding gas exhaust assembly, a pressure relief assembly and a seal assembly, the seal cover 1 is fixed on a casting platform 2, the seal cover 1 is tightly connected with the casting platform 2 through the seal assembly, the seal assembly includes a seal ring 13 and a seal groove 10, the seal groove 10 is arranged on the contact surface of the seal cover 1 and the casting platform 2; specifically, grooves are formed in the bottom surface of the sealing cover 1 and the top surface of the casting platform 2, and the groove formed in the sealing cover 1 and the groove formed in the casting platform 2 are arranged oppositely to form a sealing groove 10; the sealing ring 13 is disposed in the sealing groove 10 to prevent nitrogen leakage and isolate air.
The casting device is characterized in that a plurality of fastening pressing plates 12 are arranged between the sealing cover 1 and the casting platform, the fastening pressing plates 12 are arranged in a plurality, the fastening pressing plates 12 are evenly arranged along the circumferential direction of the sealing cover 1, and the sealing cover 1 is tightly fixed on the casting platform 2 through a sealing assembly by the fastening pressing plates 12.
The sealing cover 1 is a cylindrical structure with the upper end sealed by a seal head, and the inside of the sealing cover 1 is a containing space of a casting assembly body 14.
The protective gas inlet assembly comprises a protective gas tank 3 and a quick-connection-peg 8, the quick-connection-peg 8 is fixed at the center of the top of the sealing cover 1, the protective gas tank 3 is connected with the quick-connection-peg 8 through a protective gas pipe 4, and the protective gas pipe 4 is provided with an air inlet valve 5.
The protective gas exhaust assembly comprises an exhaust valve 7, and the exhaust valve 7 is arranged on the side of the sealing cover 1.
The pressure relief assembly comprises a pressure relief valve 6 and a detection probe 11, and the pressure relief valve 6 is arranged at the bottom of the sealing cover; the detection probe 11 is used for detecting the content of the protective gas, and the detection probe 11 is arranged on one side, close to the pressure relief valve 6, in the sealing cover 1.
An observation hole 9 is formed in one side of the top of the sealing cover 1, and the mold filling process of a casting assembly body 14 of the sealing cover 1 is observed through the observation hole 9.
Of course, in other embodiments, the shielding gas may be other gases, such as other inert gases or non-reactive gases, such as argon, helium, etc.
The utility model discloses a use:
after the casting assembly body is assembled on the casting platform, covering a nitrogen protection device on the casting assembly body, sealing a sealing cover and the casting platform through a sealing component and a fastening pressure plate, then opening an air inlet valve, closing an exhaust valve, and allowing nitrogen to enter the sealing cover from the upper air inlet valve; when the pressure of the gas in the sealing cover is more than or equal to 100Kpa, the gas is discharged outwards by the pressure relief valve, so that the interior of the casting assembly body is filled with nitrogen before mold filling. When the detection probe detects that the nitrogen density is more than or equal to 99 percent, the air inlet valve is closed, the exhaust valve is opened, casting and mold filling are carried out, the mold filling process can be observed through the observation hole, and the device is removed after mold filling is finished.
The utility model solves the oxidation problem in the casting process, so that the interior of the casting assembly body is filled with nitrogen before filling the mold, and the air is isolated; the utility model discloses be equipped with discharge valve, open discharge valve before filling the type, avoided filling the production of type in-process backpressure, reduced and filled the type in-process and pressed from both sides the sediment because of the oxidation that metal liquid and air contact produced, can effectively improve aluminum alloy low pressure casting quality, make the oxidation press from both sides the sediment production probability and reduce more than 70%.
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (9)
1. The utility model provides an aluminum alloy low pressure casting protection device which characterized in that: the casting device comprises a sealing cover (1), wherein the sealing cover (1) is arranged on a casting platform (2) through a sealing component, and a sealing space for accommodating a casting assembly body (14) is formed between the sealing cover (1) and the casting platform (2);
and the sealing cover (1) is connected with a protective gas inlet assembly and a pressure relief valve (6).
2. The aluminum alloy low-pressure casting protection device of claim 1, wherein: the sealing cover is characterized by further comprising an exhaust valve (7), wherein the exhaust valve (7) is arranged on the side portion of the sealing cover (1).
3. The aluminum alloy low-pressure casting protection device of claim 1, wherein: the pressure relief valve (6) is arranged at the bottom of the sealing cover.
4. The aluminum alloy low-pressure casting protection device of claim 1, wherein: the sealing assembly comprises a sealing ring (13) and a sealing groove (10), the sealing groove (10) is formed in the contact surface of the sealing cover (1) and the casting platform (2), and the sealing ring (13) is arranged in the sealing groove (10).
5. The aluminum alloy low-pressure casting protection device of claim 1, wherein: and a fastening pressing plate (12) is arranged between the sealing cover (1) and the casting platform, and the fastening pressing plate (12) is uniformly arranged along the circumferential direction of the sealing cover (1).
6. The aluminum alloy low-pressure casting protection device of claim 1, wherein: the protective gas inlet assembly comprises a protective gas tank (3) and a quick-connection connector (8), the quick-connection connector (8) is fixed on the sealing cover (1), the protective gas tank (3) is connected with the quick-connection connector (8) through a protective gas pipe (4), and the protective gas pipe (4) is provided with an air inlet valve (5).
7. The aluminum alloy low-pressure casting protection device of claim 2, wherein: still include test probe (11), test probe (11) are used for detecting the protective gas content, test probe (11) are established in the inside one side that is close to pressure relief valve (6) of sealed cowling (1).
8. The aluminum alloy low-pressure casting protection device of claim 1, wherein: and an observation hole (9) is formed in one side of the top of the sealing cover (1).
9. A low pressure casting protector for aluminum alloys as claimed in claim 3 wherein: the sealing cover (1) bottom surface and casting platform (2) top surface all set up the recess, set up the recess of setting up in sealing cover (1) and set up relative formation seal groove (10) of the recess of setting up in casting platform (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023188410.3U CN214349531U (en) | 2020-12-26 | 2020-12-26 | Aluminum alloy low pressure casting protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023188410.3U CN214349531U (en) | 2020-12-26 | 2020-12-26 | Aluminum alloy low pressure casting protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214349531U true CN214349531U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023188410.3U Active CN214349531U (en) | 2020-12-26 | 2020-12-26 | Aluminum alloy low pressure casting protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214349531U (en) |
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2020
- 2020-12-26 CN CN202023188410.3U patent/CN214349531U/en active Active
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