CN219766760U - Investment casting cooling device - Google Patents
Investment casting cooling device Download PDFInfo
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- CN219766760U CN219766760U CN202321023104.5U CN202321023104U CN219766760U CN 219766760 U CN219766760 U CN 219766760U CN 202321023104 U CN202321023104 U CN 202321023104U CN 219766760 U CN219766760 U CN 219766760U
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- cooling apparatus
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- 238000001816 cooling Methods 0.000 title claims abstract description 133
- 238000005495 investment casting Methods 0.000 title claims abstract description 68
- 239000000112 cooling gas Substances 0.000 claims abstract description 11
- 230000007306 turnover Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 8
- 238000005266 casting Methods 0.000 abstract description 34
- 230000000694 effects Effects 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 238000004080 punching Methods 0.000 abstract description 6
- 238000007711 solidification Methods 0.000 description 7
- 230000008023 solidification Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model provides a cooling device for investment casting castings, which relates to the technical field of investment casting, and aims to solve the technical problems that the rapid cooling device for investment casting shells in the prior art needs to perform positioning marking and punching according to different castings, takes longer time, and cannot uniformly dissipate heat to the castings due to concentrated heat dissipation and cooling because a plurality of air inlets are uniformly arranged at intervals along the axis direction of a cooling box, so that the cooling gas is more uniformly introduced into the accommodating cavity to cool the investment casting castings, and the rapid cooling device can be suitable for castings with different sizes and shapes and is more uniform in cooling effect.
Description
Technical Field
The utility model relates to the technical field of investment casting, in particular to a cooling device for investment casting castings.
Background
Investment casting is to press a wax pattern by a wax material, then manually assembling and welding the wax pattern, preparing a shell after the assembly and welding are finished, dewaxing and roasting the prepared shell to form a cavity of a cast part, pouring molten metal into the cavity of the part, and processing the part after the part is completely cooled to form a required part, wherein the process is called an investment casting process. The technology is an advanced technology of near net forming, is mainly used for realizing the forming of complex, precise and thin-wall castings, can be directly used without processing or with little processing, is widely applied to industrial fields such as aeroengines and national defense industrial departments, and also widely adopts investment casting technology in the jewelry industry.
However, during the cooling process after the pouring is completed, casting defects such as shrinkage porosity and shrinkage cavity may be generated in the casting due to the cooling speed, and the cooling condition is not good, which is a key element causing pinholes in the casting. The casting with the long and short solidification time has great difference in pinholes after casting, and a learner can locally solve the problem of shrinkage porosity under the condition of long solidification time and has no problem of shrinkage porosity under the condition of short solidification time by researching the same casting. And the wall thickness of the castings is uniform, and each casting is provided with a plurality of larger or thicker heat joints, when the solidification time of the heat joints of the castings is longer, the problems can be caused, and besides, the coarse structure grains at the heat joints can be caused, and the refining is difficult to be carried out through a heat treatment process, so that the product percent of pass and the production efficiency are greatly reduced.
Chinese patent discloses a quick cooling device and a punching method for investment casting shells (application number: 201811356066.9, application date: 2018.11.14), wherein the quick cooling device for the investment casting shells is firstly manufactured, then positioning and punching are carried out, ventilation cooling is carried out after punching, when the device and the method are adopted, specific cooling devices are required to be formulated for different castings, punching and cleaning work are required to be repeated, and compressed air carries out heat dissipation cooling on the position where heat of the investment casting shells is concentrated from all around air outlets, so that the heat dissipation effect is concentrated, and the castings cannot be uniformly cooled.
Disclosure of Invention
The utility model aims to provide an investment casting cooling device, which solves the technical problems that the rapid cooling device for investment casting shells in the prior art needs to mark and punch holes according to different castings, takes longer time, and cannot uniformly dissipate heat of the castings due to concentrated heat dissipation and cooling, so that the quality of the castings is affected.
The utility model provides an investment casting cooling device, which comprises: a cooling box and an air pipe joint;
the cooling box is of a barrel structure with an opening at the top, and a containing cavity for placing an investment casting is arranged in the cooling box;
the circular arc lateral wall of cooling box is followed the even interval of axis direction of cooling box is provided with a plurality of air inlets, every the air inlet all is provided with the air pipe joint, the air pipe joint is used for being connected with outside cooling gas equipment.
In an alternative embodiment of the present utility model,
the investment casting cooling device further comprises a connecting cover plate;
the connecting cover plate is covered on the top opening of the cooling box, and is provided with a pouring opening which is used for pouring molten metal into the investment casting in the accommodating cavity.
In an alternative embodiment of the present utility model,
the top of connecting the apron is provided with the upset apron, the upset apron with the connecting the apron rotates to be connected, the connecting the apron is located the opening part of pouring gate is provided with locking protruding mouth, the upset apron is used for the shutoff locking protruding mouth.
In an alternative embodiment of the present utility model,
the investment casting cooling device further comprises a locking screw;
the end part of the turnover cover plate, which is far away from the connecting cover plate, is provided with a first notch, a second notch is arranged at the position of the locking protrusion opening, which corresponds to the first notch, and the locking screw rod sequentially penetrates through the first notch and the second notch to be connected with the connecting cover plate;
the locking screw is in threaded connection with a locking nut, and the locking nut is used for being abutted with the top of the overturning cover plate so as to limit the rotation of the overturning cover plate.
In an alternative embodiment of the present utility model,
the investment casting cooling apparatus further comprises a connector;
the connecting piece passes through the connecting cover plate and stretches into the cooling box, and the connecting piece is used for fastening the connecting cover plate on the cooling box.
In an alternative embodiment of the present utility model,
the connecting piece comprises a connecting screw rod and a connecting nut;
the outer circumference extension of connecting the apron has first tie-in limit, first tie-in limit is provided with first tie-in slot, the top outer circumference extension of cooling tank has the second tie-in limit, the second tie-in limit is provided with the second tie-in slot, connecting screw passes in proper order first tie-in slot with the second tie-in slot, connecting nut is provided with two, two connecting screw is located respectively the top of first tie-in limit with the below of second tie-in limit, and two connecting nut all with connecting screw threaded connection.
In an alternative embodiment of the present utility model,
the investment casting cooling device further comprises a sealing ring;
the top of cooling box is provided with the mounting groove, the sealing washer set up in the mounting groove, the sealing washer be used for with the cooling box with the connection apron is sealed.
In an alternative embodiment of the present utility model,
the outer circumferential side wall of the cooling box is provided with a lifting hook;
the outer circumference lateral wall of connecting the apron is provided with the handle.
In an alternative embodiment of the present utility model,
the top side wall of the cooling box is provided with a plurality of air outlets, and the air outlets are uniformly arranged at intervals along the circumferential direction of the cooling box.
In an alternative embodiment of the present utility model,
the connecting cover plate is provided with one or more observation ports.
According to the investment casting cooling device, the investment casting is placed in the accommodating cavity, the cooling gas output by the external cooling gas equipment enters the accommodating cavity through the gas pipe joint on the gas inlet, and the gas inlets are uniformly arranged at intervals along the axis direction of the cooling box, so that the cooling gas can more uniformly enter the accommodating cavity to cool the investment casting, the investment casting cooling device can be suitable for castings with different sizes and shapes, is more uniform in cooling effect, the cooling effect is better, the technical problems that the investment casting shell rapid cooling device in the prior art needs to be used for positioning marks and punching according to different castings, the time is long, and the castings cannot be uniformly cooled due to concentrated heat dissipation and cooling, and the quality of the castings is affected are solved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an investment casting cooling apparatus provided by an embodiment of the utility model;
FIG. 2 is a schematic view of an investment casting cooling apparatus according to an embodiment of the utility model from another perspective;
FIG. 3 is a schematic diagram of a cooling box in an investment casting cooling apparatus according to an embodiment of the utility model.
Icon: 100-cooling boxes; 110-a hook; 120-air outlet; 200-tracheal tube joint; 300-connecting the cover plate; 310-locking the boss; 320-handle; 330-viewing port; 400-turning over the cover plate; 500-locking the screw; 510-locking nut; 600-connecting piece; 610-connecting screws; 620-connecting a nut; 700-sealing ring.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 and 2, the investment casting cooling apparatus provided in this embodiment includes: cooling box 100 and air pipe joint 200; the cooling box 100 is provided with a barrel structure with an opening at the top, and a containing cavity for placing an investment casting is arranged in the cooling box 100; the circular arc sidewall of the cooling tank 100 is provided with a plurality of air inlets at uniform intervals along the axial direction of the cooling tank 100, each of which is provided with an air pipe joint 200, the air pipe joint 200 being for connection with external cooling air equipment.
Specifically, the cooling box 100 is of a cylindrical structure, the top of the cooling box is provided with an opening, the investment casting to be cooled is placed into the accommodating cavity in the cooling box 100, and because the air inlets for introducing cooling gas are arranged on the side wall of the cooling box 100 at intervals along the axial direction of the cooling box 100, the cooling gas acts on the investment casting more uniformly, and the cooling effect on the investment casting is better.
The investment casting foundry goods cooling device that this embodiment provided, through placing investment casting foundry goods in the holding chamber, the cooling gas of outside cooling gas equipment output enters into the holding chamber through the air pipe joint 200 on the air inlet, and because a plurality of air inlets are evenly spaced along the axis direction of cooler bin 100 and set up, make the more even foundry goods that enter into of cooling gas to the investment casting in the holding chamber cool off, can be applicable to the foundry goods of different size shapes, and the cooling is more even, the cooling effect is better, the investment casting shell quick cooling device who has alleviateed exists among the prior art needs according to different foundry goods location mark and perforation, the required spending time is longer, and because concentrated heat dissipation cooling leads to unable even to dispel the heat to the foundry goods, influence the technical problem of foundry goods quality.
Based on the above examples, in an alternative embodiment, the investment casting cooling apparatus further comprises a connecting cover plate 300; the connecting cover plate 300 is covered on the top opening of the cooling box 100, and the connecting cover plate 300 is provided with a pouring opening for pouring molten metal into the investment casting in the accommodating cavity.
Specifically, after the investment casting is put into the cooling box 100, the opening at the top of the cooling box 100 is blocked by the connecting cover plate 300, a pouring gate is arranged on the connecting cover plate 300, molten metal is poured into a cavity of a part through the pouring gate, molten metal is poured into a preheated mould shell, the pouring gate is immediately covered after pouring, and meanwhile, the cooling box 100 is inflated.
In an alternative embodiment, the top of the connection cover 300 is provided with a flip cover 400, the flip cover 400 is rotatably connected with the connection cover 300, the connection cover 300 is provided with a locking protrusion 310 at the opening of the pouring gate, and the flip cover 400 is used for blocking the locking protrusion 310.
Specifically, in order to block the pouring opening, a turnover cover plate 400 is provided, the turnover cover plate 400 is hinged to the top surface of the connection cover plate 300 through a hinge shaft, the turnover cover plate 400 can rotate relative to the connection cover plate 300, a locking protrusion opening 310 is formed in the opening of the pouring opening, the height of the locking protrusion opening 310 is higher than that of the connection cover plate 300, when the turnover cover plate 400 rotates to a horizontal state, the turnover cover plate 400 covers the locking protrusion opening 310, and the locking protrusion opening 310 is blocked, so that the pouring opening can be covered.
In an alternative embodiment, the investment casting cooling apparatus further comprises a locking screw 500; the end part of the turnover cover plate 400, which is far away from the connecting cover plate 300, is provided with a first notch, a second notch is arranged at the position of the locking protrusion opening 310, which corresponds to the first notch, and the locking screw 500 sequentially penetrates through the first notch and the second notch to be connected with the connecting cover plate 300; the locking screw 500 is screw-coupled with a locking nut 510, and the locking nut 510 is used to abut against the top of the flip cover 400 to limit the rotation of the flip cover 400.
Specifically, the end of the turnover cover plate 400 is recessed inwards to form a first gap, the end of the locking protrusion opening 310 is recessed inwards to form a second gap, the locking screw 500 sequentially penetrates through the first gap and the second gap to be fixed on the connecting cover plate 300, the outer surface of the locking screw 500 is provided with external threads, the locking nut 510 is connected to the locking screw 500 in a threaded manner, when the turnover cover plate 400 is positioned at a horizontal position, the locking nut 510 is connected to the locking screw 500, the locking nut 510 is rotated, the end of the turnover cover plate 400 is pressed down by the locking nut 510, the turnover cover plate 400 can be limited at the horizontal state, and the pouring opening is plugged.
In an alternative embodiment, the investment casting cooling apparatus further comprises a connector 600; the connection member 600 protrudes into the cooling tank 100 through the connection cover plate 300, and the connection member 600 serves to fasten the connection cover plate 300 to the cooling tank 100.
Specifically, after the investment casting is put into the cooling box 100, the connecting cover plate 300 is fastened at the opening of the top of the cooling box 100 by using the connecting piece 600, and the connecting piece 600 can be provided with a bolt, a buckle, a bolt and other structures, and different types of connecting pieces 600 can be selected according to actual situations.
In an alternative embodiment, the connector 600 includes a connector screw 610 and a connector nut 620; the outer circumference of the connection cover plate 300 extends to have a first connection side, the first connection side is provided with a first connection slot, the outer circumference of the top of the cooling tank 100 extends to have a second connection side, the second connection side is provided with a second connection slot, the connection screw 610 sequentially passes through the first connection slot and the second connection slot, the connection nut 620 is provided with two, the two connection screws 610 are respectively located above the first connection side and below the second connection side, and the two connection nuts 620 are in threaded connection with the connection screw 610.
Specifically, the first connecting edge is a protruding structure of the outer circumference of the connecting cover plate 300, the second connecting edge is a protruding structure of the outer circumference of the top of the cooling box 100, the side edges of the first connecting edge and the second connecting edge are both recessed inwards to form a first connecting slot and a second connecting slot, after the connecting cover plate 300 is covered on the cooling box 100, the connecting screw 610 penetrates through the first connecting slot and the second connecting slot, two connecting nuts 620 are mounted on the connecting screw 610 one by one, and the first connecting edge and the second connecting edge are clamped, so that the connecting cover plate 300 can be fastened on the cooling box 100.
In an alternative embodiment, as shown in FIG. 3, the investment casting cooling apparatus further comprises a seal ring 700; the top of the cooling tank 100 is provided with a mounting groove in which a sealing ring 700 is provided, and the sealing ring 700 is used to seal the cooling tank 100 with the connection cover plate 300.
Specifically, an installation groove with an upward notch is formed in the top of the side wall of the cooling box 100, and a sealing ring 700 is arranged in the installation groove, when the connecting cover plate 300 presses down the top of the cooling box 100, the connecting cover plate 300 presses down the sealing ring 700, and the sealing ring 700 plays a role in sealing.
In an alternative embodiment, the outer circumferential side wall of the cooling tank 100 is provided with hooks 110; the outer circumferential side wall of the connection cover 300 is provided with a handle 320, the lifting movement of the cooling tank 100 is facilitated by the hooks 110, and the fastening of the connection cover 300 to the cooling tank 100 is facilitated by the handle 320.
In an alternative embodiment, the top sidewall of the cooling box 100 is provided with a plurality of air outlets 120, and the plurality of air outlets 120 are uniformly spaced along the circumferential direction of the cooling box 100.
In an alternative embodiment, the connection cover 300 is provided with one or more viewing ports 330, and the viewing ports 330 are transparent glass provided on the connection cover 300, so that a worker can observe the internal condition of the cooling box 100 conveniently.
The investment casting cooling device provided by the embodiment comprises the following using steps: step 1, pressing a wax pattern according to investment casting technical requirements, performing assembly welding on the wax pattern according to a set combination mode, and checking the assembly welding quality of a module.
And 2, manufacturing shells of the assembled and welded wax mould according to the shell manufacturing technical requirements, and checking the shell manufacturing quality.
And step 3, dewaxing and roasting the prepared shell to form the final shell.
And 4, smelting molten metal, and preheating the shell by using a trolley type resistance furnace.
And 5, opening the upper cover of the manufactured cooling box 100, and placing the preheated shell in the cooling box 100.
Step 6, pouring molten metal into the preheated mould shell, immediately covering a pouring gate after pouring, and simultaneously inflating the cooling box 100 through an air pipe interface;
and 7, opening a piston of the air outlet 120 to enable air to escape from the product, opening a locking plate at the joint of the upper cover and the box body after the casting is completely solidified, and taking out the casting by using the crown block, namely, achieving uniform cooling of the casting.
Compared with the prior art, the investment casting cooling device provided by the embodiment can accelerate the solidification rate of the casting under the condition that the solidification sequence of the casting is not changed, so that the casting is uniformly cooled after solidification from pouring, is not influenced by the casting structure, can be repeatedly utilized, reduces the probability of local shrinkage porosity and shrinkage porosity of the casting, and greatly improves the qualification rate and the production efficiency of the casting.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. An investment casting cooling apparatus, comprising: a cooling box (100) and an air pipe joint (200);
the cooling box (100) is of a barrel structure with an opening at the top, and a containing cavity for placing an investment casting is arranged in the cooling box (100);
the circular arc lateral wall of cooling tank (100) is followed the even interval of axis direction of cooling tank (100) is provided with a plurality of air inlets, every the air inlet all is provided with air pipe joint (200), air pipe joint (200) are used for being connected with outside cooling gas equipment.
2. The investment casting cooling apparatus of claim 1, wherein the investment casting cooling apparatus comprises,
the investment casting cooling apparatus further comprises a connecting cover plate (300);
the connecting cover plate (300) is arranged on the top opening of the cooling box (100) in a covering mode, the connecting cover plate (300) is provided with a pouring opening, and the pouring opening is used for pouring molten metal into the investment casting in the accommodating cavity.
3. The investment casting cooling apparatus of claim 2, wherein,
the top of connecting apron (300) is provided with upset apron (400), upset apron (400) with connecting apron (300) rotate and are connected, connecting apron (300) are located the opening part of pouring gate is provided with locking protruding mouth (310), upset apron (400) are used for shutoff locking protruding mouth (310).
4. The investment casting cooling apparatus of claim 3, wherein,
the investment casting cooling apparatus further comprises a locking screw (500);
the end part of the turnover cover plate (400) far away from the connecting cover plate (300) is provided with a first notch, a second notch is arranged at the position of the locking protrusion opening (310) corresponding to the first notch, and the locking screw (500) sequentially penetrates through the first notch and the second notch to be connected with the connecting cover plate (300);
the locking screw (500) is in threaded connection with a locking nut (510), and the locking nut (510) is used for abutting against the top of the turnover cover plate (400) so as to limit rotation of the turnover cover plate (400).
5. The investment casting cooling apparatus of claim 2, wherein,
the investment casting cooling apparatus further comprises a connector (600);
the connecting piece (600) penetrates through the connecting cover plate (300) and protrudes into the cooling box (100), and the connecting piece (600) is used for fastening the connecting cover plate (300) on the cooling box (100).
6. The investment casting cooling apparatus of claim 5, wherein the cooling system comprises a cooling system,
the connector (600) comprises a connecting screw (610) and a connecting nut (620);
the outer circumference of connecting apron (300) extends there is first connection limit, first connection limit is provided with first connection slotted hole, the top outer circumference of cooling tank (100) extends there is the second connection limit, the second connection limit is provided with the second connection slotted hole, connecting screw (610) pass in proper order first connection slotted hole with the second connection slotted hole, connecting nut (620) are provided with two, two connecting screw (610) are located respectively the top of first connection limit with the below of second connection limit, and two connecting nut (620) all with connecting screw (610) threaded connection.
7. The investment casting cooling apparatus of claim 2, wherein,
the investment casting cooling apparatus further comprises a seal ring (700);
the top of cooling tank (100) is provided with the mounting groove, sealing washer (700) set up in the mounting groove, sealing washer (700) are used for with cooling tank (100) with connecting apron (300) seal.
8. The investment casting cooling apparatus of claim 2, wherein,
the outer circumferential side wall of the cooling box (100) is provided with a lifting hook (110);
the outer circumferential side wall of the connecting cover plate (300) is provided with a handle (320).
9. The investment casting cooling apparatus of claim 1, wherein the investment casting cooling apparatus comprises,
a plurality of air outlets (120) are formed in the side wall of the top of the cooling box (100), and the air outlets (120) are uniformly arranged at intervals along the circumferential direction of the cooling box (100).
10. The investment casting cooling apparatus of claim 2, wherein,
the connection cover plate (300) is provided with one or more viewing ports (330).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321023104.5U CN219766760U (en) | 2023-04-28 | 2023-04-28 | Investment casting cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321023104.5U CN219766760U (en) | 2023-04-28 | 2023-04-28 | Investment casting cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219766760U true CN219766760U (en) | 2023-09-29 |
Family
ID=88130245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321023104.5U Active CN219766760U (en) | 2023-04-28 | 2023-04-28 | Investment casting cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219766760U (en) |
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- 2023-04-28 CN CN202321023104.5U patent/CN219766760U/en active Active
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Effective date of registration: 20240429 Address after: 266700 south side of west section of Shenhai expressway connecting line, Nancun Town, Pingdu City, Qingdao City, Shandong Province Patentee after: Qingdao Gangyan Dekai Precision Casting Co.,Ltd. Country or region after: China Patentee after: HEBEI GANGYAN DEKAI TECHNOLOGY Co.,Ltd. Address before: 072750 No. 1, torch South Street, Zhuozhou Development Zone, Baoding City, Hebei Province Patentee before: HEBEI GANGYAN DEKAI TECHNOLOGY Co.,Ltd. Country or region before: China |