CN213645814U - Casting die table capable of reducing crack defects of deformed aluminum alloy round ingot - Google Patents
Casting die table capable of reducing crack defects of deformed aluminum alloy round ingot Download PDFInfo
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- CN213645814U CN213645814U CN202022291652.9U CN202022291652U CN213645814U CN 213645814 U CN213645814 U CN 213645814U CN 202022291652 U CN202022291652 U CN 202022291652U CN 213645814 U CN213645814 U CN 213645814U
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Abstract
The utility model discloses a casting mould platform capable of reducing the crack defect of a deformed aluminum alloy round ingot, which is provided with at least one main liquid melting groove, at least one side of the main liquid melting groove is provided with a plurality of molten liquid sub-grooves, the molten liquid sub-grooves are communicated with the main liquid melting groove, each molten liquid sub-groove is provided with a crystallizer group corresponding to each molten liquid sub-groove, each crystallizer group comprises at least one crystallizer, a gate valve is arranged in each molten liquid sub-groove, each crystallizer is provided with a dummy bar head, and all the dummy bar heads are arranged on the same lifting device; the aluminum melt can flow into each molten liquid sub-tank through the main molten liquid tank, and when the aluminum melt in all the molten liquid sub-tanks reaches the set height, all the gate valves are lifted upwards simultaneously, so that the aluminum melt enters into each crystallizer. By utilizing the method and the device, the aluminum melt entering each crystallizer can be solidified within a set time range, the phenomena of ingot tail separation and aluminum melt leakage are avoided, and the safety production and the product quality are ensured.
Description
Technical Field
The utility model relates to a can reduce casting mould platform that warp aluminum alloy round ingot crackle defect.
Background
The aluminum alloy used for aerospace, rail transit and automobile manufacturing mostly adopts 7xxx series and 6xxx wrought aluminum alloys due to the strength requirement, wherein the 7xxx alloy is an aluminum-zinc alloy, and the 6xxx alloy is an aluminum-magnesium-silicon alloy.
When the wrought aluminum alloy is cast, high-temperature aluminum melt enters a die table, then is divided into every crystallizer along a flow channel, heat is dissipated to the periphery after the aluminum melt enters the crystallizer, the temperature of the aluminum melt is reduced, the aluminum melt in contact with a dummy bar head is firstly solidified, then the aluminum melt in contact with a casting ring is solidified, and finally the aluminum melt in contact with the flow channel is solidified. When the molten aluminum in contact with the casting ring is in a solidified state and the molten aluminum in contact with the guide pipe is in an intermediate state of transition from a liquid state to a solid state, the dummy bar head is lowered to start stable casting.
The time from the entry of the aluminium melt into the crystalliser to the beginning of the descent of the dummy bar, called the holding time, is too short, and if the aluminium melt in contact with the casting ring has not yet solidified completely the dummy bar head begins to descend, the aluminium melt escapes from the crystalliser, possibly causing an explosive hazard. If the holding time is too long, the fully solidified dummy bar head of the aluminum melt in contact with the guide pipe begins to descend, the aluminum melt enters the cavity between the casting rings, and separation, called end separation, occurs in contact with the solidified aluminum, and the separation is easy to cause crack defects for the alloys with high crack tendencies of 6xxx, 7xxx and the like.
A plurality of crystallizers are arranged on the same die table, the same lifting device is adopted to drive the dummy bar head to descend, after the aluminum melt enters the die table, the crystallizer closest to the inlet is filled with the aluminum melt firstly, the holding time is longest, and the crystallizer farthest from the inlet is filled with the aluminum melt finally, and the holding time is shortest. When the holding time of the crystallizer far away from the inlet is an ideal value, the holding time of the crystallizer adjacent to the inlet is longer, and ingot tail separation and even crack defects are caused.
At present, in order to reduce crack defects, the conventional method is as follows: in the initial stage of casting, a low-concentration aluminum alloy melt is used for bottom paving. The method has high cost, and each casting process needs to prepare not only the aluminum melt of the target product, but also another low-concentration aluminum alloy melt. And each casting is divided into two times of casting, so that the production cost is increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a casting die table capable of reducing the crack defect of the deformed aluminum alloy round ingot, which is provided with at least one main liquid melting groove, at least one side of the main liquid melting groove is provided with a plurality of molten liquid sub-grooves, the molten liquid sub-grooves are communicated with the main liquid melting groove, each molten liquid sub-groove is provided with a crystallizer group corresponding to each molten liquid sub-groove, each crystallizer group comprises at least one crystallizer, a gate valve is arranged in each molten liquid sub-groove, each crystallizer is provided with a dummy bar head, and all the dummy bar heads are arranged on the same lifting device;
the aluminum melt can flow into each molten liquid sub-tank through the main molten liquid tank, and when the aluminum melt in all the molten liquid sub-tanks reaches the set height, all the gate valves are lifted upwards simultaneously, so that the aluminum melt enters into each crystallizer.
In the application, a plurality of melt sub-tanks are connected on a main melt tank, gate valves are arranged in the melt sub-tanks, during production, aluminum melt firstly enters each melt sub-tank through the main melt tank, due to the limiting action of the gate valves, the aluminum melt cannot enter each crystallizer through the melt sub-tanks, when the aluminum melt in the melt sub-tanks reaches a set height, the gate valves are simultaneously lifted upwards, the aluminum melt enters each crystallizer, thereby eliminating the time difference that the aluminum melt successively enters each melt sub-tank from the main melt tank, enabling the aluminum melt to simultaneously enter each crystallizer group, and after the time difference that the aluminum melt enters each crystallizer in the same crystallizer group is properly set, ensuring that the aluminum melt entering each crystallizer completes solidification in a set time range, and avoiding the phenomena of tail ingot separation and aluminum melt leakage, the product quality is improved while the safety production is ensured.
In particular, for more demanding products, each crystallizer group comprises one and only one crystallizer. When each crystallizer group only comprises one crystallizer, the time difference of the aluminum melt entering each crystallizer can be shortened to the maximum extent, the product quality uniformity is improved while the product formation defects are avoided,
furthermore, each crystallizer group comprises 3-8 crystallizers, the 3-8 crystallizers are arranged in a radial mode relative to a distribution center, and the melt sub-grooves are communicated with the crystallizers through the distribution center. The design can ensure that each molten liquid is connected with more crystallizers in different grooves, and simultaneously can reduce the time difference from the aluminum melt to each crystallizer and ensure the product quality.
Furthermore, in order to make full use of each molten liquid sub-tank, crystallizer groups are arranged on two sides of each molten liquid sub-tank.
Further, to improve the yield of a single casting mold, the casting mold has at least two main melt channels; and the casting mould platform is also provided with a melt inlet, and the at least two main melt tanks are communicated with the melt inlet.
Furthermore, one ends of at least two adjacent main melt grooves far away from the melt inlet are connected together through a connecting groove. This design can make the aluminium melt in the adjacent main melt groove flow each other, guarantees the even flow of aluminium melt in each main melt groove, makes the aluminium melt can enter into each melt uniformly and divide the inslot.
Furthermore, in order to avoid the aluminum melt from being solidified in the main melt tank and influencing the normal production, the connecting tank is connected with a effusion tank. During production, the aluminum melt in the main melt tank can flow out of the casting die table through the effusion groove, so that the fluidity of the aluminum melt in the main melt tank is ensured, the aluminum melt is prevented from being solidified in the main melt tank, and the main melt tank is prevented from being blocked, so that the normal production is influenced.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a partial sectional view taken along a line a-a in fig. 1.
Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a third embodiment of the present invention.
Detailed Description
Example 1
Referring to fig. 1 and 2, a first casting mold 100 capable of reducing crack defects of a wrought aluminum alloy round ingot is provided, the first casting mold 100 has a first main melt tank 21, a plurality of first melt sub-tanks 22 are respectively disposed on two sides of the first main melt tank 21, in fig. 1, four first melt sub-tanks 22 are exemplarily disposed on two sides of the first main melt tank 21, each first melt sub-tank 22 is communicated with the first main melt tank 21, a first melt inlet 20 is disposed at one end of the first main melt tank 21, and a discharge outlet 26 is disposed at the other end of the first main melt tank 21.
One crystallizer group is provided corresponding to each first molten liquid sub-tank, and in the embodiment, each crystallizer group comprises four first crystallizers 10, and the four first crystallizers 10 are symmetrically arranged on two sides of the corresponding first molten liquid sub-tank 22.
Each first crystallizer 10 comprises a cylindrical housing 11, a top cover 14 is mounted on the top of the housing, a draft tube 15 extending upward is mounted in the center of the top cover 14, a casting ring 13 is lined on the top of the housing, and dummy bar heads 16 movably abut against the lower side of the draft tube 15 from bottom to top, and are connected to a lifting table 19. An annular cooling pipe 12 is arranged in the housing 11, the cooling pipe 12 surrounds the outer side of the casting ring, a liquid outlet 121 which faces the inner side and is inclined downwards is arranged on the inner side of the cooling pipe, and the liquid outlet 121 is used for spraying cooling liquid of the cooling pipe onto the cast ingot.
A first gate valve 23 is arranged in each first molten liquid sub-tank 22, all the first gate valves 23 are connected to the same lifting device 24, during production, aluminum melt enters the first main molten liquid tank 21 from the first molten liquid inlet 20 and then flows into each first molten liquid sub-tank 22, and when the aluminum melt in all the first molten liquid sub-tanks 22 reaches a set height, all the first gate valves 23 are lifted upwards at the same time, so that the aluminum melt enters each first crystallizer 10.
Example 2
In this embodiment, which is basically the same as embodiment 1, referring to fig. 3, three second main melt tanks 81 are arranged in parallel on a second casting mold 700, the three second main melt tanks 81 are all communicated with a main melt tank 88, and a second melt inlet 80 is arranged on the main melt tank 88.
In fig. 3, seven second molten metal sub-tanks 82 are exemplarily arranged on two sides of each second main molten metal tank 81, and each second molten metal sub-tank 82 is communicated with the corresponding second main molten metal tank 81.
One crystallizer group is provided for each second molten metal sub-tank, and in the present embodiment, each crystallizer group includes only one second crystallizer 70, and the structure of the second crystallizer 70 is the same as that of the first crystallizer 10.
And a second gate valve 83 is arranged in each second molten liquid sub-tank 82, all the second gate valves 83 are connected to the same lifting device, during production, aluminum melt enters the second main molten liquid tank 81 from the second molten liquid inlet 80 and then flows into each second molten liquid sub-tank 82, and when the aluminum melt in all the second molten liquid sub-tanks 82 reaches a set height, all the second gate valves 83 are lifted upwards simultaneously, so that the aluminum melt enters each second crystallizer.
In this embodiment, the ends of the three second main melt grooves 81 remote from the second melt inlet 80 are connected together via a connecting groove 86, and a chute 87 is connected to the connecting groove 86. Namely, one ends of at least two adjacent main melt tanks far away from the melt inlet are connected together through a connecting tank.
Example 3
Referring to fig. 4, the present embodiment is a modification of the first embodiment, in the present embodiment, a third main molten liquid tank 51 is disposed on a third casting mold table 400, a plurality of third molten liquid sub-tanks 52 are disposed on two sides of the third main molten liquid tank 51, in fig. 3, three third molten liquid sub-tanks 52 are disposed on two sides of the third main molten liquid tank 51, each third molten liquid sub-tank 52 is communicated with the third main molten liquid tank 51, and a third molten liquid inlet 50 is disposed at one end of the third main molten liquid tank 51.
In the present embodiment, each crystallizer group includes six third crystallizers 40, the six third crystallizers 40 are radially arranged relative to a distribution center 54, the third molten metal sub-tanks are communicated with the distribution center, and the distribution center is communicated with the corresponding third crystallizers.
And a third gate valve 53 is arranged in each third molten liquid sub-tank 52, all the third gate valves 53 are connected to the same lifting device, during production, the aluminum melt enters the third main molten liquid tank 51 from the third molten liquid inlet 50 and then flows into each third molten liquid sub-tank 52, and when the aluminum melt in all the third molten liquid sub-tanks 52 reaches a set height, all the third gate valves 53 are lifted upwards at the same time, so that the aluminum melt enters each third crystallizer.
Claims (7)
1. A casting mould platform capable of reducing the crack defect of a deformed aluminum alloy round ingot is characterized by comprising at least one main liquid melting groove, a plurality of molten liquid sub-grooves are arranged on at least one side of the main liquid melting groove and communicated with the main liquid melting groove, a crystallizer group is arranged corresponding to each molten liquid sub-groove and comprises at least one crystallizer, a gate valve is arranged in each molten liquid sub-groove, each crystallizer is provided with a dummy bar head, and all the dummy bar heads are arranged on the same lifting device;
the aluminum melt can flow into each molten liquid sub-tank through the main molten liquid tank, and when the aluminum melt in all the molten liquid sub-tanks reaches the set height, all the gate valves are lifted upwards simultaneously, so that the aluminum melt enters into each crystallizer.
2. The casting mold table of claim 1,
each crystallizer group comprises one and only one crystallizer.
3. The casting mold table of claim 1,
each crystallizer group comprises 3-8 crystallizers, the 3-8 crystallizers are arranged in a radial mode relative to a distribution center, and the melt sub-grooves are communicated with the crystallizers through the distribution center.
4. The casting mold table of claim 1,
and crystallizer groups are arranged on both sides of the molten liquid sub-tank.
5. Casting mould station according to any of the claims 1 to 4,
the casting mould table is provided with at least two main molten liquid tanks;
the casting mold table is also provided with a melt inlet, and the at least two main melt tanks are communicated with the melt inlet.
6. The casting mold table of claim 5,
at least two adjacent main melt tanks are connected together through a connecting tank at one end far away from the melt inlet.
7. The casting mold table of claim 6,
the connection groove is connected with a effusion groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022291652.9U CN213645814U (en) | 2020-10-14 | 2020-10-14 | Casting die table capable of reducing crack defects of deformed aluminum alloy round ingot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022291652.9U CN213645814U (en) | 2020-10-14 | 2020-10-14 | Casting die table capable of reducing crack defects of deformed aluminum alloy round ingot |
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| Publication Number | Publication Date |
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| CN213645814U true CN213645814U (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022291652.9U Active CN213645814U (en) | 2020-10-14 | 2020-10-14 | Casting die table capable of reducing crack defects of deformed aluminum alloy round ingot |
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