CN108339946B - Point-spraying type cooling ring and hub die using same - Google Patents
Point-spraying type cooling ring and hub die using same Download PDFInfo
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- CN108339946B CN108339946B CN201810374702.4A CN201810374702A CN108339946B CN 108339946 B CN108339946 B CN 108339946B CN 201810374702 A CN201810374702 A CN 201810374702A CN 108339946 B CN108339946 B CN 108339946B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
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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
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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Abstract
The point-spraying cooling ring comprises a closed-ring-shaped outer shell, wherein the outer shell is provided with an upper shell and a lower shell which are arranged in a split manner and are vertically combined to form an annular inner cavity; a refrigerant conveying inner pipe arranged around the central ring center of the outer shell is arranged in the annular inner cavity, and a feed inlet for communicating an external refrigerant source is formed in the refrigerant conveying inner pipe; a refrigerant passageway is formed between the shell wall of the outer shell and the outer tube wall of the refrigerant conveying inner tube, a discharge port and a transition through hole which are arranged on different shell wall areas are arranged on the outer shell, and the discharge port is communicated with the refrigerant passageway; the refrigerant conveying device is characterized by further comprising a refrigerant spray pipe penetrating and sleeved in the transition through hole, an inner end pipe orifice of the refrigerant spray pipe is communicated with the refrigerant conveying inner pipe, an outer end pipe orifice is arranged outside the outer shell, and a backflow gap communicated with a refrigerant passageway is formed between the inner wall of the transition through hole and the outer wall of the refrigerant spray pipe. The point-spraying cooling ring simplifies the structure of the internal flow passage and the processing operation, and reduces the processing cost.
Description
Technical Field
The invention relates to a cooling device applied to a mold, which adopts a point-spraying type cooling mode to cool hot nodes on the mold. The invention also relates to a hub die applying the point-spraying cooling ring.
Background
In order to be able to increase the cooling rate of the casting, cooling devices are often provided in the casting mold. The applicant pays attention to a multipoint combined cooling device disclosed in Chinese utility model patent ZL201120209943.7, which comprises an annular cooling seat 9, wherein an upper circulating water channel and a lower circulating water channel (18, 19) are arranged on the annular cooling seat 9, the lower circulating water channel is set into a water inlet channel 19, the upper circulating water channel is set into a water return channel 18, the water inlet channel 19 is communicated with a casting machine cooling medium liquid source through a water inlet pipe 6, and the water return channel 18 is communicated with a casting machine water return pipeline through a water return pipe 7. The upper surface of the cooling seat 9 is provided with a plurality of annular bosses 14 arranged at intervals, the upper surface of the cooling seat 9 is provided with a water inlet hole 22 and a water return hole 25 for the inner annular space of each annular boss 14, all the water inlet holes 22 are communicated with the water inlet channel 19, and all the water return holes 25 are communicated with the water return channel 18. The cooling pipe 24 is screwed on the water inlet hole 22. A plurality of cooling holes 8 are formed in a hot node of the mold, a sunken platform 12 is arranged at the front end of each cooling hole 8, and one sunken platform 12 corresponds to one boss 14. During installation, the bosses 14 of the cooling seat 9 are matched and tightly attached with the sinking tables 12 in a one-to-one correspondence manner, and the cooling pipes 24 extend into the cooling holes 8. The coolant is sprayed out from the cooling pipe 24 to cool the hot spot area, and as the boss 14 is tightly attached to the sink table 12, the residual coolant cannot leak out and is collected in the inner annular space of the annular boss 14 and flows back into the return water channel 18 through the return water hole 25. The multi-point combined cooling device belongs to a closed circulating water cooling mechanism, not only can simultaneously carry out cooling treatment on a plurality of hot nodes, but also can assemble a plurality of cooling pipes which respectively provide cooling liquid for different hot nodes onto a cooling seat, and is arranged on the cooling seat, the upper circulating water channel and the lower circulating water channel are a plurality of the cooling pipes provide the cooling liquid and recycle the residual cooling liquid, so that the quantity of the water inlet pipes and the water return pipes is reduced. However, it can be seen that, in order to guide the coolant in the water inlet channel 19 to spray upwards into the cooling hole 8, a branch cooling pipe 23 and a nozzle 24 which are communicated with the water inlet channel 19 and extend into the cooling hole 8, and the water return hole 25 which is used for recovering the coolant sprayed from the nozzle 24 and is communicated with the water return channel 18 are required, so that the water inlet channel 19, the branch cooling pipe 23, the nozzle 24 and the water return channel 18 form a water flow pipeline connected in series. After carefully studying the structure of the multi-point combined cooling device, it can be found that the structure of the water flow pipeline arranged on the cooling device is extremely complex, and channels such as the water inlet 22, the water return 25 and the water return channel 18 which are criss-cross need to be processed on the cooling seat 9 for each cooling point through a drill respectively, so that the processing is very complicated, and the processing cost of the multi-point combined cooling device is undoubtedly increased.
Disclosure of Invention
In view of the shortcomings of the prior art, one of the objects of the present invention is to improve the internal flow passage structure of the cooling mechanism, thereby simplifying the flow passage structure and simplifying the machining operation of the flow passage. The invention provides a point-spraying cooling ring which is characterized by comprising a closed-ring-shaped outer shell, wherein the outer shell is provided with an upper shell and a lower shell which are arranged in a split manner, and an annular inner cavity is formed between the upper shell and the lower shell after the upper shell and the lower shell are vertically combined; a refrigerant conveying inner pipe which is arranged around the central ring center of the outer shell is arranged in the annular inner cavity, the refrigerant conveying inner pipe is approximately C-shaped, the head end and the tail end of the refrigerant conveying inner pipe are respectively in a closed shape, and a feed inlet which is used for being communicated with an external refrigerant source is formed in the refrigerant conveying inner pipe; a refrigerant passageway is formed between the shell wall of the outer shell and the outer tube wall of the refrigerant conveying inner tube, a discharge port and a transition through hole which are arranged on different shell wall areas are formed in the outer shell, and the discharge port is communicated with the refrigerant passageway; the transition passage is internally provided with a transition passage, the transition passage is internally provided with a refrigerant conveying inner pipe, the transition passage is internally provided with a refrigerant spraying pipe, the refrigerant spraying pipe penetrates through the transition passage, the inner end pipe orifice of the refrigerant spraying pipe is communicated with the refrigerant conveying inner pipe, the outer end pipe orifice of the refrigerant spraying pipe is arranged outside the outer shell, a backflow gap is formed between the inner wall of the transition passage and the outer wall of the refrigerant spraying pipe, and the backflow gap is communicated with the refrigerant passage.
Wherein, the shell body has upper casing and lower casing that the components of a whole that can function independently set up. The upper shell and the lower shell which are separately arranged can be independently and respectively manufactured and made of different materials.
The refrigerant conveying inner pipe is approximately C-shaped, and the head end and the tail end of the refrigerant conveying inner pipe are respectively closed. Therefore, the head end and the tail end of the refrigerant conveying inner pipe are not communicated together, the head end and the tail end of the refrigerant conveying inner pipe are spaced, and the refrigerant entering the refrigerant conveying inner pipe cannot leak out through the head end and the tail end of the refrigerant conveying inner pipe.
The inner end pipe orifice of the refrigerant spray pipe is communicated with the refrigerant conveying inner pipe, and the outer end pipe orifice is arranged outside the outer shell. In this way, the refrigerant entering the refrigerant conveying inner pipe can be sprayed out of the outer shell through the refrigerant spray pipe.
The discharge hole and the backflow gap are respectively communicated with the refrigerant passage. In this way, the refrigerant flowing back into the refrigerant passageway from the backflow gap can be discharged out of the outer shell through the discharge port.
According to the technical scheme, compared with the prior art, the invention has the beneficial technical effects that:
1. because the upper shell and the lower shell adopt the split structure, the processing of the upper shell and the lower shell is convenient, in particular the processing of the internal structures of the upper shell and the lower shell is convenient, and the annular inner cavity can be formed between the upper shell and the lower shell relatively simply and conveniently. And secondly, the refrigerant passage can be conveniently formed in the annular inner cavity. Specifically, the refrigerant conveying inner pipe is installed and positioned on one of the upper shell and the lower shell, and then the upper shell and the lower shell are combined together to form the refrigerant passageway between the outer shell and the refrigerant conveying inner pipe. Compared with the internal structure of a multipoint combined cooling device in the prior patent ZL201120209943.7, the internal flow passage structure of the point-spraying cooling ring is simpler, the processing operation is greatly simplified, and the processing cost is reduced.
2. The refrigerant conveying inner pipe is approximately C-shaped, and the head end and the tail end of the refrigerant conveying inner pipe are respectively closed. Therefore, the refrigerant entering the refrigerant conveying inner pipe from the feed port flows upwards into the refrigerant spray pipe after filling the refrigerant conveying inner pipe and then is sprayed out of the outer shell. Meanwhile, when a plurality of refrigerant spray pipes are communicated to the refrigerant conveying inner pipe, each refrigerant spray pipe can distribute refrigerants with basically consistent flow and temperature, and therefore cooling treatment with the same strength can be conducted on a plurality of cooling heat nodes. In addition, the structure of the refrigerant conveying inner pipe is very simple, and the refrigerant conveying inner pipe is very convenient to manufacture.
3. The backflow gap is communicated with the refrigerant passage. In this way, the refrigerant sprayed to the outside of the outer shell through the refrigerant spray pipe can flow back into the refrigerant passageway through the backflow gap and then is discharged out of the point-spraying cooling ring through the discharge hole.
The refrigerant conveying inner pipe is provided with a refrigerant conveying inner pipe, and the refrigerant conveying inner pipe is provided with a refrigerant conveying inner pipe and a refrigerant conveying inner pipe. Namely, the refrigerant conveying inner pipe is not abutted against the upper shell, so that the heat exchange quantity between the low-temperature refrigerant flowing in the refrigerant conveying inner pipe and the upper shell is reduced, and the adverse effect on a mold part directly contacted with the upper shell due to rapid temperature reduction of the upper shell is avoided or reduced.
In a further technical scheme, the upper shell is provided with a top shell wall and a pair of side shell walls which are respectively arranged at the left end and the right end of the top shell wall, and the upper shell is a heat insulation shell. Therefore, the heat exchange quantity between the low-temperature refrigerant flowing in the refrigerant conveying inner pipe and the upper shell is reduced, and the adverse effect on the mold part directly contacted with the upper shell due to the rapid temperature reduction of the upper shell is avoided or reduced.
The technical scheme can also be that the feed inlet and the refrigerant spray pipe are arranged in a staggered manner. Therefore, the refrigerant entering the refrigerant spray pipe from the feed port needs to flow for a distance along the refrigerant spray pipe and then enters the refrigerant spray pipe, and does not directly enter the refrigerant spray pipe, otherwise, the refrigerant spray pipe aligned with the feed port can spray excessive refrigerant, and the refrigerant spray amount of other refrigerant spray pipes is obviously less.
The further technical scheme can also be that the discharge hole is arranged corresponding to the space between the head end and the tail end of the inner refrigerant conveying pipe. Therefore, the discharge port is prevented from being covered by the refrigerant conveying inner pipe to influence the discharge amount and the discharge speed of the refrigerant.
In addition, the invention also provides a hub mould applying the spot spraying type cooling ring, which is characterized by comprising an upper mould and a lower mould which are arranged at the upper part and the lower part respectively, and a side mould arranged between the upper mould and the lower mould, wherein the upper mould, the lower mould and the side mould enclose a hub cavity; the lower side wall of the lower die is provided with a closed annular accommodating pit, the sprue is arranged in a central space defined by the accommodating pit, the lower side wall of the lower die is also provided with a cooling cavity respectively configured for each protruding column, the cooling cavity extends towards the direction of the protruding column, and the cooling cavity is arranged above the accommodating pit and communicated with the accommodating pit; the point-spraying type cooling ring is embedded in the containing pit, an outer end pipe orifice of a refrigerant spray pipe of the point-spraying type cooling ring extends into the cooling cavity, and a transition through hole of the point-spraying type cooling ring is communicated with the cooling cavity. In this way, the coolant sprayed from the coolant spray pipe of the point spraying type cooling ring can enter the cooling cavity to cool the convex column, then flows back into the coolant passage through the transition through hole, and is discharged out of the point spraying type cooling ring through the discharge hole.
Due to the characteristics and advantages, the invention can be applied to a multipoint cooling mechanism and a hub die applied by the multipoint cooling mechanism.
Drawings
FIG. 1 is a schematic cross-sectional view of a hub mold with a spot spray cooling ring according to the present invention;
FIG. 2 is a schematic perspective view of the spot spray cooling ring;
FIG. 3 is a schematic top view of the point spray cooling ring;
FIG. 4 isbase:Sub>A schematic cross-sectional view A-A of FIG. 3;
FIG. 5 is a schematic cross-sectional view B-B of FIG. 3;
fig. 6 is a schematic top view of the spot-injection cooling ring, and the outer shell 3 is not shown in order to clearly view the refrigerant conveying inner tube 4.
Detailed Description
The structure of the spot-spraying cooling ring and the hub mold using the spot-spraying cooling ring according to the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, a hub mold 100 using a point spray type cooling ring 2 includes an upper mold 1 and a lower mold 12 arranged at upper and lower parts, and a side mold 11 disposed between the upper mold 1 and the lower mold 12, the upper mold 1, the lower mold 12 and the side mold 11 enclose a hub cavity 10, a gate 13 for inputting raw material melt is disposed on the lower mold 12, the gate 13 communicates with the hub cavity 10, at least one pair of protruding columns 121 (also called PCD columns) is disposed on an upper peripheral wall of the gate 13, and all the protruding columns 121 extend upward and are arranged around the gate 13. A closed ring-shaped receiving pit (not shown) is provided on the lower side wall of the lower mold 12, and the gate 13 is disposed in a central space defined by the receiving pit. A cooling cavity 120 is further provided on the lower sidewall of the lower mold 12, the cooling cavity 120 being configured for each protrusion column 121, and the cooling cavity 120 extends in the direction of the protrusion column 121. The cooling cavity 120 is arranged above the accommodating pit and communicated with the accommodating pit, and the point-spraying type cooling ring 2 is embedded in the accommodating pit.
As shown in fig. 2 to 6, the spot injection type cooling ring 2 includes an outer shell 3 having a closed ring shape, the outer shell 3 includes an upper shell 31 and a lower shell 32 which are separately provided, and the upper shell 31 and the lower shell 32 are vertically aligned to form an annular inner cavity 300 therebetween. The annular inner cavity 300 is internally provided with a refrigerant conveying inner tube 4 which is arranged around the central ring center of the outer shell 3, the refrigerant conveying inner tube 4 is approximately C-shaped, the head end and the tail end (41, 42) of the refrigerant conveying inner tube are respectively closed, a feed port which is used for being communicated with an external refrigerant source is arranged on the refrigerant conveying inner tube 4, and a feed pipe 7 is connected to the feed port. A refrigerant passageway 301 is formed between the shell wall of the outer shell 3 and the outer tube wall of the refrigerant conveying inner tube 4, a discharge port 320 and a transition through hole 30 which are arranged on different shell wall areas are arranged on the outer shell 3, the discharge port 320 is communicated with the refrigerant passageway 301 and is arranged corresponding to the space between the head end and the tail end (41, 42) of the refrigerant conveying inner tube 4, the transition through hole 30 is communicated with the cooling cavity 120, and a discharge pipe 6 is connected to the discharge port 320. Also comprises 5 refrigerant spray pipes 5. The number of the branch refrigerant nozzles 5 is adaptively set according to the number of the convex columns 121. In other embodiments, when only 2 protruding pillars are provided, 2 branch refrigerant nozzles 5 are provided. The refrigerant spray pipe 5 is sleeved in the transition through hole 30 in a penetrating manner, an inner end pipe orifice of the refrigerant spray pipe 5 is communicated with the refrigerant conveying inner pipe 4, and an outer end pipe orifice is arranged outside the outer shell 3 and extends into the cooling cavity 120. A backflow gap 30a is formed between the inner wall of the transition through hole 30 and the outer wall of the refrigerant nozzle 5, and the backflow gap 30a is communicated with the refrigerant passage 301. In the cooling process, a low-temperature refrigerant enters the refrigerant conveying inner pipe 4 through the feeding pipe 7. The refrigerant conveying inner pipe 4 is approximately C-shaped, and the head end and the tail end of the refrigerant conveying inner pipe are respectively closed. In this way, the refrigerant entering the inner refrigerant conveying pipe 4 from the inlet opening flows upwards into the refrigerant spraying pipe 5 after filling the inner refrigerant conveying pipe 4, and then is sprayed out of the outer shell 3 and enters the cooling cavity 120 to cool the protruded column 121. And each refrigerant nozzle 5 can distribute the refrigerant with basically consistent flow and temperature, so that the cooling treatment with the same intensity can be carried out on the plurality of convex columns 121. Then, the high-temperature refrigerant absorbing the heat of the protruding post 121 flows back into the refrigerant passage 301 through the backflow gap 30a, and is discharged out of the spot-spray cooling ring 2 through the discharge hole 320 and the discharge pipe 6.
Furthermore, the feed inlet and the refrigerant spray pipe 5 are arranged in a staggered mode. Therefore, the refrigerant entering the refrigerant spray pipe 5 from the feed port needs to flow for a certain distance along the refrigerant spray pipe 5 and then enter the refrigerant spray pipe 5, and cannot directly enter the refrigerant spray pipe 5, otherwise, the refrigerant spray pipe 5 aligned with the feed port sprays excessive refrigerant, and the refrigerant spraying amount of the refrigerant spray pipe 5 is obviously less.
According to the above technical solution, it can be found that, since the upper housing 31 and the lower housing 32 are of a split structure, the processing of the upper housing 31 and the lower housing 32, particularly the processing of the internal structures of the upper housing 31 and the lower housing 32, is facilitated, so that the annular inner cavity 300 can be formed therebetween relatively easily. Secondly, the refrigerant passage 301 can be conveniently formed in the annular inner cavity 300. Specifically, the refrigerant conveying inner tube 4 is first installed and positioned on one of the upper and lower shells (31, 32), and then the upper shell 31 and the lower shell 32 are folded together to form the refrigerant passage 301 between the outer shell 3 and the refrigerant conveying inner tube 4. In addition, the structure of the inner refrigerant conveying pipe 4 is very simple, and the manufacturing is very convenient.
When the projection column 121 is cooled by the spot spray cooling ring 2, the temperature of the portion around the gate 10 is inevitably affected. If the peripheral part of the gate 10 is cooled too early, the molten metal in the gate 10 is cooled too early to affect the feeding effect, and the casting has defects such as shrinkage cavity. The conventional solution is to start the spot spray cooling ring 2 after completion of the feeding, in effect, i.e. delay the cooling time of the raised columns 121, which significantly affects the cooling efficiency. In view of this, the present invention proposes a further solution. As shown in fig. 4, the upper housing 31 has a top housing wall 311 and a pair of side housing walls (312, 313) disposed at the left and right ends of the top housing wall 311, and the top housing wall 311 and the side housing walls (312, 313) of the upper housing 31 have a space between them and the refrigerant conveying inner tube 4. That is, the refrigerant conveying inner tube 4 is not abutted against the upper housing 31, which is beneficial to reducing the heat exchange amount between the low-temperature refrigerant flowing in the refrigerant conveying inner tube 4 and the upper housing 31, and avoiding or reducing the adverse effect of the rapid temperature reduction of the upper housing 31 on the mold part directly contacting with the upper housing 31. Further, the upper case 31 is a heat insulating case. In this way, the amount of heat exchange between the low-temperature refrigerant flowing through the refrigerant conveying inner tube 4 and the upper case 31 can be further reduced. In this way, the coolant sprayed from the coolant spray pipe 5 cools each of the raised columns 121 synchronously and at the same intensity, thereby ensuring the cooling effect of the raised columns 121. Meanwhile, through the heat insulation effect of the upper shell 31, the molten metal in the pouring gate 13 is prevented from being cooled in advance by a refrigerant, the feeding effect of a casting is ensured, and the temperature of the hub die is more favorably balanced. It is not necessary to intentionally delay the cooling time of the protrusion post 121 when the spot spray type cooling ring 2 is used, as in the conventional process, which is advantageous in improving the cooling efficiency.
Claims (6)
1. The point-spraying cooling ring is characterized by comprising a closed-ring-shaped outer shell, wherein the outer shell is provided with an upper shell and a lower shell which are arranged in a split mode, and an annular inner cavity is formed between the upper shell and the lower shell after the upper shell and the lower shell are vertically combined; a refrigerant conveying inner pipe arranged around the central ring center of the outer shell is arranged in the annular inner cavity, the refrigerant conveying inner pipe is approximately C-shaped, the head end and the tail end of the refrigerant conveying inner pipe are respectively in a closed shape, and a feed port used for being communicated with an external refrigerant source is formed in the refrigerant conveying inner pipe; a refrigerant passageway is formed between the shell wall of the outer shell and the outer tube wall of the refrigerant conveying inner tube, a discharge port and a transition through hole which are arranged on different shell wall areas are formed in the outer shell, and the discharge port is communicated with the refrigerant passageway; the transition passage is internally provided with a transition passage, the transition passage is internally provided with a refrigerant conveying inner pipe, the transition passage is internally provided with a refrigerant spraying pipe, the refrigerant spraying pipe penetrates through the transition passage, the inner end pipe orifice of the refrigerant spraying pipe is communicated with the refrigerant conveying inner pipe, the outer end pipe orifice of the refrigerant spraying pipe is arranged outside the outer shell, a backflow gap is formed between the inner wall of the transition passage and the outer wall of the refrigerant spraying pipe, and the backflow gap is communicated with the refrigerant passage.
2. The spot spray cooling ring of claim 1, wherein said upper housing has a top housing wall and a pair of side housing walls disposed at left and right ends of said top housing wall, and said top and side housing walls of said upper housing have a space between said coolant delivery inner pipe and said top and side housing walls, respectively.
3. The spot spray cooling ring of claim 1, wherein said upper housing has a top housing wall and a pair of side housing walls spaced apart at left and right ends of said top housing wall, said upper housing being a thermally insulated housing.
4. The spot spray cooling ring as claimed in claim 1, 2 or 3, wherein the feed inlet and the coolant nozzle are offset.
5. The spot spray cooling ring as claimed in claim 1, 2 or 3, wherein the outlet is disposed corresponding to a space between the head and the tail of the inner refrigerant conveying pipe.
6. The hub mold applying the spot spray type cooling ring as claimed in any one of the claims 1 to 5, comprising an upper mold, a lower mold and a side mold arranged between the upper mold and the lower mold, wherein the upper mold, the lower mold and the side mold enclose a hub cavity, a gate for inputting raw material melt is arranged on the lower mold, the gate is communicated with the hub cavity, at least one pair of raised columns are arranged on the upper peripheral wall of the gate, and all the raised columns extend upwards and are arranged around the gate; the lower side wall of the lower die is provided with a closed annular accommodating pit, the sprue is arranged in a central space defined by the accommodating pit, the lower side wall of the lower die is also provided with a cooling cavity which is respectively configured for each protruding column, the cooling cavity extends towards the direction of the protruding column, and the cooling cavity is arranged above the accommodating pit and communicated with the accommodating pit; the point-spraying type cooling ring is embedded in the containing pit, an outer end pipe orifice of a refrigerant spray pipe of the point-spraying type cooling ring extends into the cooling cavity, and a transition through hole of the point-spraying type cooling ring is communicated with the cooling cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810374702.4A CN108339946B (en) | 2018-04-24 | 2018-04-24 | Point-spraying type cooling ring and hub die using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810374702.4A CN108339946B (en) | 2018-04-24 | 2018-04-24 | Point-spraying type cooling ring and hub die using same |
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| Publication Number | Publication Date |
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| CN108339946A CN108339946A (en) | 2018-07-31 |
| CN108339946B true CN108339946B (en) | 2023-03-28 |
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| CN201810374702.4A Active CN108339946B (en) | 2018-04-24 | 2018-04-24 | Point-spraying type cooling ring and hub die using same |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111702148A (en) * | 2020-08-20 | 2020-09-25 | 佛山市南海奔达模具有限公司 | Annular point cooling mechanism and die-casting die applied by same |
| CN115026244B (en) * | 2022-05-25 | 2023-11-07 | 江苏龙马精密机械有限公司 | Cooling temperature control equipment for rotor support casting and casting method thereof |
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| CN108339946A (en) | 2018-07-31 |
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