CN112139455A - Casting device for preventing air holes from being generated during workpiece casting and using method thereof - Google Patents
Casting device for preventing air holes from being generated during workpiece casting and using method thereof Download PDFInfo
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- CN112139455A CN112139455A CN202011082374.4A CN202011082374A CN112139455A CN 112139455 A CN112139455 A CN 112139455A CN 202011082374 A CN202011082374 A CN 202011082374A CN 112139455 A CN112139455 A CN 112139455A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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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
- B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
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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
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
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Abstract
The invention discloses a casting device for preventing a workpiece from generating air holes during casting, which comprises a first shell, wherein the top of the first shell is fixedly connected with a fifth shell, the upper surface of the fifth shell is communicated with a third pipe body, the outer side wall of the third pipe body is provided with a feeding hopper, and the inner side wall of the fifth shell is fixedly connected with a sixth shell; when the cooling device is used, the cavity mold is placed in the plate body, the cooling liquid is added into the water tank, the metal liquid for casting is fed through the feeding hopper, the metal liquid can pass through the third tube body and the sixth tube body after being fed, flows into the plurality of fourth tube bodies which are equidistantly arranged and dispersed according to the sixth tube body and uniformly and dispersedly flows into the cavity mold, the metal liquid can be effectively and uniformly poured into the mold, the quality of a cast finished product is improved, air holes are prevented from being generated, finally, the plate body is lowered through the air cylinder, the outer side wall of the cavity mold on the plate body is immersed in the water tank, and the cavity mold is cooled through the cooling liquid.
Description
Technical Field
The invention relates to the technical field of casting devices, in particular to a casting device for preventing a workpiece from generating air holes during casting and a using method thereof.
Background
Casting is a relatively early metal hot working process mastered by human beings, and the technology reaches a relatively high level. The casting is a technological process of smelting metal into liquid meeting certain requirements, pouring the liquid into a casting mold, cooling, solidifying and cleaning to obtain a casting with a preset shape, size and performance. The cast metal comprises: copper, iron, aluminum, tin, lead and the like, and the materials of the common casting mold are raw sand, clay, water glass, resin and other auxiliary materials. The casting mould for special casting comprises: investment casting, lost foam casting, metal casting, ceramic casting, and the like. (the raw sand comprises quartz sand, magnesia, zircon sand, chromite sand, forsterite sand, semi-crystal stone sand, graphite sand, iron sand and the like).
The invention is disclosed in China: CN208575237U discloses a steel ingot casting device, which is provided with a pressing plate, a screw, an agent feeding pipe, a one-way valve and a plug structure, wherein molten steel can enter the upper end of a steel ingot casting tank body through the feeding pipe, and can move downwards through the screw, so that the molten steel is extruded downwards under the action of the pressing plate, an ingot mold can be cast, and a ladle covering agent can be added through the agent feeding pipe to completely cover the molten steel to form a three-layer melting structure, so that secondary oxidation and heat radiation of the molten steel are prevented, harmful impurities on the surface of the molten steel are adsorbed, and the quality of the cast steel ingot is improved; through setting up the lift seat, first connecting rod, the second connecting rod, first sliding block and second sliding block structure, under first cylinder and second cylinder effect, fold each other through first connecting rod and second connecting rod, can make the steel ingot that the casting was accomplished follow lift seat and fall to the fixing base upper end, slide to the stripper through the second sliding block and unload, the device not only avoids the steel ingot mould heavier, the inconvenient circumstances that removes, and can once only cast many steel ingots moreover, the cast efficiency of steel ingot is greatly improved.
However, the invention has a certain problem that the casting process is single, and the generation of air holes on the surface of a cast workpiece cannot be avoided by optimizing the casting process, and the invention has no casting cooling link in the casting process, and an operator needs to take out a mold and transfer the mold to a cooling device for cooling, so that the efficiency of the casting process is reduced.
Disclosure of Invention
The present invention is directed to a casting apparatus and a method for preventing the occurrence of blowholes during casting of a workpiece, so as to solve the above-mentioned problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a casting device for preventing air holes from being generated in workpiece casting comprises a first shell, wherein a fifth shell is fixedly connected to the top of the first shell, the upper surface of the fifth shell is communicated with a third pipe body, a feed hopper is installed on the outer side wall of the third pipe body, a sixth shell is fixedly connected to the inner side wall of the fifth shell, one end of the third pipe body penetrates through the upper surface of the sixth shell and is communicated with three sixth pipe bodies, one end of each of the three sixth pipe bodies is communicated with a seventh shell, the lower surfaces of the three seventh shells are communicated with fourth pipe bodies in an equal-distance arrangement mode, one end of each of the fourth pipe bodies penetrates through the bottom of the inner side wall of the sixth shell, a water tank is fixedly connected to the inner side wall of the first shell, the third shell is embedded in the two sides of the fifth shell, plate bodies are slidably connected to the inner side walls of the two third shells, and second shells are fixedly connected to the two sides of the first shell, two the cylinder is all installed to the inside wall of second casing, two the piston rod of cylinder all runs through the inside wall top and the fixed connection of second casing in the lower surface of plate body, the inside wall symmetry sliding connection of plate body has three die cavity mould, and is three the fourth casing, three have all been welded to the upper surface of die cavity mould the equal symmetrical welding of lower surface of fourth casing has two inserted bars, six slots, six have been seted up to the upper surface symmetry of plate body the lateral wall of inserted bar all pegs graft in six the inside wall of slot.
Preferably: the lower surface of the plate body is symmetrically and fixedly connected with two positioning rods, and the bottom of the inner side wall of the fifth shell is symmetrically embedded with two second pipe bodies.
Preferably: the lower surface symmetry fixedly connected with four support columns of first casing, four the bottom of support column all welds the bottom plate.
Preferably: the front surface of water tank intercommunication has first body, the front surface of water tank intercommunication has the fifth body, first body with the one end of fifth body all runs through the inside wall of first casing.
Preferably: the utility model discloses a six body, including the sixth body, the inside wall of sixth casing is symmetrical two bracing pieces of fixedly connected with in the inside wall bottom, two the arc has all been welded at the top of bracing piece, two the inside wall of arc all laminates in two the lateral wall of sixth body.
Preferably: four damping pads are symmetrically bonded on the upper surface and the lower surface of the plate body.
In addition, the invention also provides a use method of the casting device for preventing the air holes generated in the casting of the workpiece, which comprises the following steps:
s1, placing the cavity mold in the plate body, aligning the insert rod on the cavity mold to the insert slot for inserting, adding cooling liquid in the water tank, starting the cylinder to lift the plate body, and enabling the plate body to slide up and down in the two third shells;
s2, changing an internal cavity of the cavity mold according to a casting part to adapt to different processing parts, putting casting molten metal into the cavity mold through a feeding hopper by an operator, wherein the molten metal passes through a third pipe body and then flows into three sixth pipe bodies after passing through the third pipe body, flows into a plurality of fourth pipe bodies which are equidistantly arranged and dispersed according to the sixth pipe bodies, and uniformly and dispersedly flows into the cavity mold;
s3, after casting molten metal in the cavity mold, an operator can start the air cylinder to lower the plate body through the piston rod, so that the outer side wall of the cavity mold on the plate body is immersed in the water tank, and the cavity mold is cooled through cooling liquid;
and S4, after the casting and cooling are finished, an operator lifts the air cylinder, the piston rod pushes the plate body to lift, the fourth shell is clamped by the clamp to lift upwards, the inserted rod is separated from the slot, and the cavity mold is taken out, so that the using process of the casting device can be finished.
Preferably: at S1, the coolant in the water tank is replenished through the first pipe and discharged to the outside through the fifth pipe after use.
Compared with the prior art, the invention has the beneficial effects that: when the cooling device is used, the cavity mold is placed in the plate body, the cooling liquid is added into the water tank, the metal liquid for casting is fed through the feeding hopper, the metal liquid can pass through the third pipe body and the sixth pipe body after being fed, and flows into the plurality of fourth pipe bodies which are equidistantly arranged and dispersed according to the sixth pipe body, and uniformly and dispersedly flow into the cavity mold, so that the metal liquid can be effectively and uniformly poured into the mold, the quality of a cast finished product is improved, the generation of air holes is avoided, finally, the plate body is lowered through the air cylinder, the outer side wall of the cavity mold on the plate body is immersed in the water tank, the cavity mold is cooled through the cooling liquid, and the casting and cooling process flow is effectively combined.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the plate body according to the present invention;
FIG. 3 is a side view of a third housing according to the present invention;
fig. 4 is a schematic view of the internal structure of a sixth housing according to the present invention.
In the figure: 1. a support pillar; 2. a first housing; 3. a base plate; 4. a first pipe body; 5. a second housing; 6. a second tube body; 7. a third housing; 8. a plate body; 9. a fourth housing; 10. a fifth housing; 11. a sixth housing; 12. feeding into a hopper; 13. a third tube; 14. a fourth tube body; 15. a cavity mold; 16. positioning a rod; 17. a water tank; 18. a fifth pipe body; 19. a slot; 20. inserting a rod; 21. a damping pad; 22. a seventh housing; 23. a support bar; 24. a sixth tube; 25. a cylinder; 26. an arc-shaped plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-4, the present invention provides a technical solution: a casting device for preventing air holes from being generated in workpiece casting comprises a first shell 2, a fifth shell 10 is fixedly connected to the top of the first shell 2, the upper surface of the fifth shell 10 is communicated with a third tube body 13, a feeding hopper 12 is installed on the outer side wall of the third tube body 13, a sixth shell 11 is fixedly connected to the inner side wall of the fifth shell 10, one end of the third tube body 13 penetrates through the upper surface of the sixth shell 11 and is communicated with three sixth tube bodies 24, one end of each of the three sixth tube bodies 24 is communicated with a seventh shell 22, the lower surfaces of the three seventh shell 22 are equidistantly arranged and communicated with fourth tube bodies 14, one end of each of the fourth tube bodies 14 penetrates through the bottom of the inner side wall of the sixth shell 11, a water tank 17 is fixedly connected to the inner side wall of the first shell 2, third shell 7 is embedded in two sides of the fifth shell 10, plate bodies 8 are slidably connected to the inner side walls of the two third shell 7, and second shell 5 is fixedly connected to two sides of, the cylinder 25 is all installed to the inside wall of two second casings 5, the piston rod of two cylinders 25 all runs through inside wall top and the fixed connection of second casing 5 in the lower surface of plate body 8, the inside wall symmetry sliding connection of plate body 8 has three die cavity mould 15, fourth casing 9 has all been welded to the upper surface of three die cavity mould 15, the equal symmetrical welding of lower surface of three fourth casing 9 has two inserted bars 20, six slots 19 have been seted up to the upper surface symmetry of plate body 8, six inserted bars 20's lateral wall all is pegged graft in six slots 19's inside wall.
On the basis of the scheme: the lower surface of the plate body 8 is symmetrically and fixedly connected with two positioning rods 16, and the bottom of the inner side wall of the fifth shell 10 is symmetrically embedded with two second pipe bodies 6; the operator can see whether the plate body 8 is separated or not by descending the positioning rod 16 until the positioning rod is inserted into the second pipe body 6.
Further: the lower surface of the first shell 2 is symmetrically and fixedly connected with four support columns 1, and bottom plates 3 are welded at the bottoms of the four support columns 1; the supporting column 1 and the bottom plate 3 can play a role in supporting and stabilizing the main body part in the invention.
On the basis of the scheme: the front surface of the water tank 17 is communicated with a first pipe body 4, the front surface of the water tank 17 is communicated with a fifth pipe body 18, and one end of each of the first pipe body 4 and the fifth pipe body 18 penetrates through the inner side wall of the first shell 2; the first pipe 4 is a liquid inlet pipe of the water tank 17, the first pipe 4 can be used for supplying cooling liquid to the water tank 17, the fifth pipe 18 is a liquid outlet pipe of the water tank 17, and the liquid in the water tank 17 can be discharged to the outside through the fifth pipe 18.
Further: the bottom of the inner side wall of the sixth shell 11 is symmetrically and fixedly connected with two support rods 23, arc-shaped plates 26 are welded at the tops of the two support rods 23, and the inner side walls of the two arc-shaped plates 26 are attached to the outer side walls of the two sixth pipe bodies 24; the support bar 23 and the arc plate 26 can be attached to the sixth pipe 24 to play a role in supporting and protecting.
On the basis of the scheme: four damping pads 21 are symmetrically bonded to the upper surface and the lower surface of the plate body 8.
In addition, the invention also provides a use method of the casting device for preventing the air holes generated in the casting of the workpiece, which comprises the following steps:
s1, placing the cavity die 15 in the plate body 8, aligning the insert rod 20 on the cavity die 15 with the slot 19 for inserting, adding cooling liquid into the water tank 17, starting the air cylinder 25 to lift the plate body 8, and enabling the plate body 8 to slide up and down in the two third shells 7;
s2, changing an internal cavity of the cavity mold 15 according to a casting part to adapt to different processing parts, wherein an operator inputs a casting molten metal through the feeding hopper 12, and the input molten metal passes through the third tube 13, flows into the three sixth tubes 24 through the third tube 13, flows into the plurality of fourth tubes 14 which are equidistantly arranged and dispersed according to the sixth tubes 24, and uniformly and dispersedly flows into the cavity mold 15;
s3, after the molten metal is cast in the cavity mold 15, an operator can start the air cylinder 25 to lower the plate body 8 through the piston rod, so that the outer side wall of the cavity mold 15 on the plate body 8 is immersed in the water tank 17, and the cavity mold 15 is cooled through the cooling liquid;
and S4, after the casting and cooling are finished, an operator lifts the air cylinder 25, the piston rod pushes the plate body 8 to be lifted, the fourth shell 9 is clamped by the clamp to be lifted upwards, the inserted rod 20 is separated from the slot 19, and the cavity mold 15 is taken out, so that the using process of the casting device can be finished.
On the basis of the scheme: in S1, the coolant in the tank 17 is replenished through the first pipe 4 and discharged to the outside through the fifth pipe 18 after use.
In this embodiment, the cylinders 25 are used in the types: SC-100.
In this embodiment, a switch set for controlling the start and the stop of the air cylinder 25 is installed on one side of the first housing 2, and the switch set is connected with an external commercial power to supply power to the air cylinder 25.
Working principle or structural principle, when in use, a cavity die 15 is placed in a plate body 8, an insert rod 20 on the cavity die 15 is aligned with an insert slot 19 to be inserted and connected, cooling liquid is added into a water tank 17, a first pipe body 4 in the water tank 17 is a liquid inlet pipe, the cooling liquid can be supplemented into the water tank 17 through the first pipe body 4, a fifth pipe body 18 is a liquid outlet pipe, the liquid in the water tank 17 can be discharged outside through the fifth pipe body 18, an air cylinder 25 is started to lift the plate body 8, the plate body 8 can slide up and down in two third shells 7, an operator can descend through a positioning rod 16 until the plate body 8 is inserted and connected with a second pipe body 6, so that whether the plate body 8 is separated or not is known, detection before use is facilitated, casting metal liquid is put into the plate body through a feeding hopper 12 after detection, the metal liquid can pass through a third pipe body 13 after being put into the plate body 13 and then flows into, the liquid flows into the plurality of fourth pipe bodies 14 which are equidistantly arranged and dispersed according to the sixth pipe body 24, and uniformly and dispersedly flows into the cavity mold 15, the casting quality can be improved and the generation of air holes can be reduced by uniformly dispersing and casting, wherein the support rod 23 and the arc-shaped plate 26 can play a role in supporting and protecting the sixth pipe body 24, the plate body 8 is lowered by the cylinder 25 through the piston rod after casting, so that the outer side wall of the cavity mold 15 on the plate body 8 is immersed in the water tank 17, the cavity mold 15 is cooled by the cooling liquid, after the casting and cooling are completed, an operator lifts the cylinder 25 by lifting the cylinder 25, the piston rod pushes the plate body 8 to be lifted, the fourth shell 9 is clamped by the clamp to be lifted upwards, the insert rod 20 is separated from the slot 19, and the cavity mold 15 is taken out, and the use process of the casting device can be.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A casting device for preventing blowholes from being generated in casting a workpiece, comprising a first housing (2), characterized in that: the top of the first shell (2) is fixedly connected with a fifth shell (10), the upper surface of the fifth shell (10) is communicated with a third pipe body (13), the outer side wall of the third pipe body (13) is provided with a feeding hopper (12), the inner side wall of the fifth shell (10) is fixedly connected with a sixth shell (11), one end of the third pipe body (13) penetrates through the upper surface of the sixth shell (11) and is communicated with three sixth pipe bodies (24), one end of each of the three sixth pipe bodies (24) is communicated with a seventh shell (22), the lower surfaces of the three seventh shells (22) are equidistantly arranged and are communicated with fourth pipe bodies (14), one end of each of the fourth pipe bodies (14) penetrates through the bottom of the inner side wall of the sixth shell (11), the inner side wall of the first shell (2) is fixedly connected with a water tank (17), the two sides of the fifth shell (10) are embedded with third shells (7), the inner side walls of the two third shells (7) are connected with a plate body (8) in a sliding manner, the two sides of the first shell (2) are fixedly connected with second shells (5), the inner side walls of the two second shells (5) are respectively provided with an air cylinder (25), piston rods of the two air cylinders (25) penetrate through the top of the inner side wall of the second shell (5) and are fixedly connected to the lower surface of the plate body (8), the inner side wall of the plate body (8) is symmetrically and slidably connected with three cavity molds (15), the upper surfaces of the three cavity molds (15) are respectively welded with a fourth shell (9), the lower surfaces of the three fourth shells (9) are respectively symmetrically welded with two inserted rods (20), six slots (19) are symmetrically formed in the upper surface of the plate body (8), and the outer side walls of the six insertion rods (20) are all inserted into the six inner side walls of the slots (19).
2. The casting apparatus for preventing blowholes in casting a workpiece according to claim 1, wherein: the lower surface symmetry fixedly connected with two locating levers (16) of plate body (8), the inside wall bottom symmetry of fifth casing (10) has inlayed two second bodys (6).
3. The casting apparatus for preventing blowholes in casting a workpiece according to claim 2, wherein: the lower surface symmetry fixedly connected with of first casing (2) four support columns (1), four bottom plate (3) have all been welded to the bottom of support column (1).
4. The casting apparatus for preventing blowholes in casting a workpiece according to claim 1, wherein: the front surface of water tank (17) communicates with first body (4), the front surface of water tank (17) communicates with fifth body (18), first body (4) with the one end of fifth body (18) all runs through the inside wall of first casing (2).
5. The casting apparatus for preventing blowholes in casting a workpiece according to claim 1, wherein: the utility model discloses a six body, including sixth casing (11), the inside wall bottom symmetry fixedly connected with of sixth casing (11) two bracing pieces (23), two arc (26) have all been welded at the top of bracing piece (23), two the inside wall of arc (26) all laminates in two the lateral wall of sixth body (24).
6. The casting apparatus for preventing blowholes in casting a workpiece according to claim 1, wherein: the upper surface and the lower surface of the plate body (8) are symmetrically bonded with four damping pads (21).
7. The use method of the casting device for preventing the air holes from being generated in the casting of the workpiece is characterized by comprising the following steps of:
s1, placing the cavity die (15) in the plate body (8), aligning the insert rod (20) on the cavity die (15) to the slot (19) for inserting, adding cooling liquid into the water tank (17), starting the air cylinder (25) to lift the plate body (8), and enabling the plate body (8) to slide up and down in the two third shells (7);
s2, changing an internal cavity of a cavity mold (15) according to a casting part to adapt to different processing parts, putting casting molten metal into the cavity mold through a feeding hopper (12), wherein the molten metal flows into three sixth pipe bodies (24) through a third pipe body (13) after being put into the cavity mold, flows into a plurality of fourth pipe bodies (14) which are arranged and dispersed equidistantly according to the sixth pipe bodies (24), and flows into the cavity mold (15) uniformly and dispersedly;
s3, after the molten metal is cast in the cavity mold (15), an operator can start the air cylinder (25) to lower the plate body (8) through the piston rod, so that the outer side wall of the cavity mold (15) on the plate body (8) is immersed in the water tank (17), and the cavity mold (15) is cooled through cooling liquid;
and S4, after casting and cooling are finished, an operator lifts the air cylinder (25), the piston rod pushes the plate body (8) to be lifted, the fourth shell (9) is clamped by the clamp to be lifted upwards, the inserted rod (20) is separated from the slot (19), and the cavity mold (15) is taken out, so that the using process of the casting device can be finished.
8. The use method of a casting device for preventing blowholes in casting a workpiece according to claim 7, wherein: at S1, the coolant in the tank (17) is replenished through the first pipe (4) and discharged to the outside through the fifth pipe (18) after use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082374.4A CN112139455A (en) | 2020-10-12 | 2020-10-12 | Casting device for preventing air holes from being generated during workpiece casting and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011082374.4A CN112139455A (en) | 2020-10-12 | 2020-10-12 | Casting device for preventing air holes from being generated during workpiece casting and using method thereof |
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| CN112846103A (en) * | 2020-12-30 | 2021-05-28 | 苏州列治埃盟新材料技术转移有限公司 | Preparation device of novel lead-free alloy material alloy pipe for food machinery part |
| CN113770339A (en) * | 2021-09-16 | 2021-12-10 | 泛凯斯特汽车零部件(江苏)有限公司 | Nodular cast iron casting device capable of being cooled rapidly and using method thereof |
| CN114260420A (en) * | 2021-12-27 | 2022-04-01 | 太和县奥能金属材料有限公司 | Casting device for non-ferrous metal production and processing |
| CN114593596A (en) * | 2022-03-06 | 2022-06-07 | 南通联翔机械有限公司 | Casting equipment capable of effectively reducing air holes and using method |
| CN115156511A (en) * | 2022-09-07 | 2022-10-11 | 苏州圣亚精密机械有限公司 | Metal part casting device capable of reducing bubble amount |
| CN117000951A (en) * | 2023-09-28 | 2023-11-07 | 靖江市鸿奕铸造机械有限公司 | Valve casting mould |
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| CN113770339A (en) * | 2021-09-16 | 2021-12-10 | 泛凯斯特汽车零部件(江苏)有限公司 | Nodular cast iron casting device capable of being cooled rapidly and using method thereof |
| CN113770339B (en) * | 2021-09-16 | 2023-02-28 | 泛凯斯特汽车零部件(江苏)有限公司 | Nodular cast iron casting device capable of being cooled rapidly and using method thereof |
| CN114260420A (en) * | 2021-12-27 | 2022-04-01 | 太和县奥能金属材料有限公司 | Casting device for non-ferrous metal production and processing |
| CN114593596A (en) * | 2022-03-06 | 2022-06-07 | 南通联翔机械有限公司 | Casting equipment capable of effectively reducing air holes and using method |
| CN115156511A (en) * | 2022-09-07 | 2022-10-11 | 苏州圣亚精密机械有限公司 | Metal part casting device capable of reducing bubble amount |
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| CN117000951B (en) * | 2023-09-28 | 2023-12-15 | 靖江市鸿奕铸造机械有限公司 | Valve casting mould |
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