CN210937080U - Bimetal impeller casing casting mould - Google Patents
Bimetal impeller casing casting mould Download PDFInfo
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- CN210937080U CN210937080U CN201922102376.4U CN201922102376U CN210937080U CN 210937080 U CN210937080 U CN 210937080U CN 201922102376 U CN201922102376 U CN 201922102376U CN 210937080 U CN210937080 U CN 210937080U
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Abstract
The utility model discloses a bimetal impeller casing casting mould, including the metal mold base, metal mold base upper surface is by outer to interior fixed mounting in proper order there is the sand box, the aluminium skin sand shell, nonrust steel bushing and metal core, it annotates the chamber to form the aluminium skin melt between aluminium skin sand shell and the nonrust steel bushing, nonrust steel bushing and metal core top fixed mounting have the inboard rampart of rising head, it emits the oral cavity to form between the inboard rampart of rising head and the aluminium skin sand shell, the bottom that emits the oral cavity is annotated the chamber top with the aluminium skin melt and is linked together, be provided with around the aluminium skin sand shell and water, the bottom is provided with the annular runner, water and annular runner intercommunication, the annular runner is annotated the chamber bottom and is linked together through a plurality of root bottom runners. This kind of casting mould can be cast and obtain the inner wall and be stainless steel construction, and the impeller casing that the main part was made by aluminum alloy material can satisfy the wearability of friction surface promptly, has the holistic lightweight design of impeller casing that can realize.
Description
Technical Field
The utility model relates to a bimetal casting technical field, specific bimetal impeller casing casting mould that says so.
Background
Important parts in a propulsion system of a high-speed ship can generate friction with an impeller shell in a long-term use process, parts such as the impeller shell and the like are required to be aluminum alloy according to the type quantification requirement of the ship, however, the aluminum alloy is not wear-resistant, so that the impeller shell can be damaged and rubbed to leak water or scraped out of a groove due to the friction of the impeller in the use process, the working efficiency of the impeller is seriously influenced, the navigational speed of the ship is reduced, and the energy consumption is increased.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide bimetal impeller casing casting mould, this kind of casting mould can realize the inseparable combination of aluminum alloy foundry goods and stainless steel spare in the casting process, and the impeller casing main part that the casting obtained is the aluminum alloy, and the inner wall wearing and tearing face is stainless steel, has satisfied impeller casing's lightweight design promptly, has also satisfied the wearability requirement of wearing and tearing face.
In order to solve the technical problem, the utility model discloses a technical scheme does:
bimetal impeller casing casting mould, its characterized in that: the aluminum-skin casting mold comprises a metal mold base, wherein the metal mold base is of a plate-shaped structure and is fixedly installed at the bottom of a sand box, an aluminum-skin sand shell is tightly attached to the inner wall of the sand box, a metal core is arranged in the aluminum-skin sand shell, a stainless steel sleeve is fixedly installed on the inner wall of one side, facing the aluminum-skin sand shell, of the metal core, and an aluminum-skin molten liquid injection cavity is formed between the stainless steel sleeve and the aluminum-skin sand shell;
the bottom end of the metal core is hermetically connected with the metal mold base, the top end of the metal core is fixedly provided with a riser inner side annular wall, a riser cavity is formed between the riser inner side annular wall and the aluminum-clad sand shell, and the bottom of the riser cavity is communicated with the top of the aluminum-clad molten liquid injection cavity;
the aluminum-clad sand shell is internally provided with at least one pouring gate, the top opening of the pouring gate is as high as the top opening of the riser cavity, the bottom of the pouring gate is connected with the annular flow channel, the annular flow channel is arranged at the bottom of the aluminum-clad sand shell, and the annular flow channel is communicated with the bottom of the aluminum-clad molten metal injection cavity through the bottom flow channel.
The annular runner set up in the bottom outside of aluminium skin sand shell, the annular runner for the annular cavity that the aluminium skin sand shell lateral wall and the aluminium skin end sand shell of bottom enclose, the fixed upper surface that sets up at the metal mold base of aluminium skin end sand shell, the bottom runner set up in the contact surface department of aluminium skin sand shell inner wall bottom and aluminium skin end sand shell.
The number of the bottom runners is not less than 2, the bottom runners are uniformly distributed on the edge of the bottom of the aluminum sheet molten pouring cavity, and each bottom runner is inclined towards the same side in the horizontal plane.
The vertical setting of metal core, the horizontal cross-section of metal core be circular, the metal core bottom extend to aluminium skin sand shell one side and form annular diapire, the annular diapire of metal core inlay in the recess of metal mold base upper surface, the bottom of nonrust steel bushing and the annular diapire in close contact with of metal core, the top of nonrust steel bushing and the bottom plate inseparable fixed connection of the inboard rampart of rising head, the top of nonrust steel bushing and the top parallel and level of metal core.
The vertical cross-section of the riser inner side ring wall is L-shaped, one side of the riser inner side ring wall bottom plate close to the aluminum skin sand shell extends upwards to form a vertical plate, the top end of the vertical plate and the top end of the aluminum skin sand shell are located on the same horizontal plane, and a riser cavity is formed between the vertical plate of the riser inner side ring wall and the aluminum skin sand shell.
The outer side wall of the annular bottom wall of the metal core is in close contact connection with the inner side wall of the aluminum-clad bottom sand shell, and the cavity bottom surface of the aluminum-clad molten liquid injection cavity and the channel bottom surface of the bottom runner are located in the same horizontal plane.
The distance between adjacent annular grooves on the surface of the stainless steel sleeve is 5mm, 6 to 10 longitudinal grooves which are axially parallel to the stainless steel sleeve are arranged on the surface of the stainless steel sleeve, and the longitudinal grooves are uniformly distributed on the surface of the stainless steel sleeve; the depth of the annular groove and the depth of the longitudinal groove are both 1 mm.
The bottom of the metal core is clamped into an annular groove on the upper surface of the metal mold base through a bottom flange.
This kind of bimetal impeller casing casting mould's beneficial effect does: firstly, the stainless steel sleeve is preset in the aluminum skin molten liquid injection cavity, the stainless steel sleeve is tightly connected with an aluminum alloy casting in the casting process, the impeller shell body is made of aluminum alloy, and the inner wall wear surface is made of stainless steel, so that the lightweight design of the impeller shell is met, and the wear resistance requirement of the wear surface is also met. And secondly, due to the arrangement of a plurality of pouring channels, the aluminum alloy solution can be quickly injected in the casting process, and the quality of the cast part is improved. And thirdly, the bottom runner is obliquely arranged, optimally, the runner can be tangent to the inner edge of the bottom of the molten aluminum skin injection cavity, so that the impact of the injected aluminum alloy solution on the side wall of the molten aluminum skin injection cavity is reduced, and the internal defects of the formed casting are greatly reduced. Fourthly, the annular groove and the longitudinal groove arranged on the surface of the stainless steel sleeve improve the tightness of the connection of the aluminum alloy casting and the stainless steel sleeve. Fifthly, the metal core is arranged to ensure that heat can be conducted to the stainless steel sleeve when preheating, preheating of the stainless steel sleeve is achieved, the temperature of the contact surface of the stainless steel sleeve and the molten aluminum alloy cannot be changed violently when the molten aluminum alloy is injected into the contact surface, and casting quality is improved.
Drawings
Fig. 1 is the structure schematic diagram of the casting mold for the bimetallic impeller shell of the present invention.
Fig. 2 is a schematic sectional view of the casting mold for the bimetal impeller shell of the present invention.
Fig. 3 is a schematic sectional view of the casting mold for the bimetal impeller shell of the present invention.
Fig. 4 is the structural schematic diagram of the aluminum shell sand shell of the casting mold for the bimetallic impeller shell of the utility model.
Fig. 5 is the structural schematic diagram of the aluminum leather bottom sand shell of the casting mold for the bimetallic impeller shell of the utility model.
Fig. 6 is the schematic diagram of the aluminum alloy injection runner of the casting mold for the bimetal impeller shell of the utility model.
Figure 7 is the schematic diagram of the stainless steel sleeve of the casting mold for the bimetallic impeller shell of the present invention.
The attached drawings of the specification are marked as follows: 1. a metal mold base; 2. a metal core; 3. a sandbox; 4. an aluminum shell sand shell; 5. a stainless steel sleeve; 6. the inner side ring wall of the riser; 7. a pouring channel; 8. injecting the molten aluminum into the cavity; 9. oral cavity is caused; 10. an annular flow passage; 11. a bottom runner; 12. an aluminum leather bottom sand shell.
Detailed Description
The invention is further described below with reference to the drawings and specific preferred embodiments.
As shown in fig. 1, 2 and 3, the bimetal impeller shell casting mold is characterized in that: the aluminum-clad sand casting mold comprises a metal mold base 1, wherein the metal mold base 1 is of a plate-shaped structure, the metal mold base 1 is fixedly installed at the bottom of a sand box 3, an aluminum-clad sand shell 4 is tightly attached to the inner wall of the sand box 3, a metal core 2 is arranged in the aluminum-clad sand shell 4, a stainless steel sleeve 5 is fixedly installed on the inner wall of one side, facing the aluminum-clad sand shell 4, of the metal core 2, and an aluminum-clad molten liquid injection cavity 8 is formed between the stainless steel sleeve 5 and the aluminum-clad sand shell 4;
the bottom end of the metal core 2 is hermetically connected with the metal mold base 1, the top end of the metal core 2 is fixedly provided with a riser inner side annular wall 6, a riser cavity 9 is formed between the riser inner side annular wall 6 and the aluminum skin sand shell 4, and the bottom of the riser cavity 9 is communicated with the top of the aluminum skin molten liquid injection cavity 8;
the aluminum-clad sand shell is characterized in that at least one pouring channel 7 is arranged in the aluminum-clad sand shell 4, the top opening of the pouring channel 7 is as high as the top opening of the dead head cavity 9, the bottom of the pouring channel 7 is connected with an annular flow channel 10, the annular flow channel 10 is arranged at the bottom of the aluminum-clad sand shell 4, and the annular flow channel 10 is communicated with the bottom of the aluminum-clad molten liquid injection cavity 8 through a bottom flow channel 11.
In this embodiment, annular runner 10 sets up in the bottom outside of aluminium skin sand shell 4, annular runner 10 for the annular cavity that 4 lateral walls of aluminium skin sand shell and the aluminium skin end sand shell 12 of bottom enclose, the fixed upper surface that sets up at metal mold base 1 of aluminium skin end sand shell 12, bottom runner 11 set up in the contact surface department of 4 inner walls bottom of aluminium skin sand shell and aluminium skin end sand shell 12.
In this embodiment, the number of the bottom runners 11 is not less than 2, the bottom runners 11 are uniformly distributed on the bottom edge of the aluminum skin molten liquid injection cavity 8, and each bottom runner 11 is obliquely arranged towards the same side in the horizontal plane.
In this embodiment, 2 vertical settings of metal core, 2 horizontal cross-sections of metal core be circular, 2 bottoms of metal core extend to 4 one sides of aluminium skin sand shell and form annular diapire, 2 annular diapire of metal core inlay in the recess of metal mold base 1 upper surface, 5 bottom of stainless steel cover and 2 annular diapire in close contact with of metal core, 5 top of stainless steel cover and the inside ring wall 6's of rising head bottom plate in close fixed connection, 5 top of stainless steel cover and 2 top parallel and level of metal core.
In this embodiment, the vertical cross-section of the inside rampart 6 of riser is the L type, and the one side that the inside rampart 6 bottom plate of riser is close to aluminium skin sand shell 4 upwards extends and forms the riser, the top of riser and the top of aluminium skin sand shell 4 be located same horizontal plane, the riser of the inside rampart 6 of riser and aluminium skin sand shell 4 between be riser chamber 9.
In this embodiment, the outer sidewall of the annular bottom wall of the metal core 2 is in close contact with the inner sidewall of the aluminum-clad bottom sand shell 12, and the bottom surface of the cavity of the aluminum-clad molten liquid injection cavity 8 and the bottom surface of the channel of the bottom runner 11 are located in the same horizontal plane.
In the embodiment, the distance between adjacent annular grooves on the surface of the stainless steel sleeve 5 is 5mm, 6 to 10 longitudinal grooves which are axially parallel to the stainless steel sleeve 5 are arranged on the surface of the stainless steel sleeve 5, and the longitudinal grooves are uniformly distributed on the surface of the stainless steel sleeve 5; the depth of the annular groove and the depth of the longitudinal groove are both 1 mm.
In this embodiment, the bottom of the metal core 2 is engaged into an annular groove on the upper surface of the metal mold base 1 via a bottom flange.
Further, the casting die for the bimetal impeller shell is symmetrically provided with pouring gates 7 at two sides of the aluminum skin sand shell 4, the bottom of each pouring gate 7 is communicated with an annular flow channel 10, and 4 groups of bottom flow channels 11 are uniformly distributed on the annular flow channel 10 between the two pouring gates 7 and used for injecting liquid aluminum alloy into the aluminum skin molten liquid injection cavity 8.
The stainless steel sleeve 5 in the device can wrap the two end faces and the inner side face of the aluminum alloy casting, and the required surface of the aluminum alloy casting can be wrapped by setting the shape of the stainless steel sleeve 5. In the device, the outer side surface of the vertical plate of the annular wall 6 on the inner side of the dead head and the top end of the outer wall of the aluminum skin molten liquid injection cavity 8 are positioned in the same vertical plane, so that the formed dead head is not connected with the upper end surface and the lower end surface of an aluminum alloy casting, and the dead head of the casting is convenient to remove.
Finally, after the sand shell of the mold is removed, a bimetallic impeller shell formed by tightly combining the stainless steel sleeve 5 and an aluminum alloy casting is obtained, the stainless steel sleeve 5 on the inner surface and the end surface of the impeller shell ensures the wear resistance of the friction surface, and meanwhile, the impeller shell main body is made of aluminum alloy, so that the requirement of light weight design is met.
The casting steps of the bimetal impeller shell are as follows:
and 6, naturally cooling for 12 hours, removing sand shells and cutting off risers.
In the step 5, the time for injecting the aluminum alloy melt into the aluminum skin melt injection cavity 8 is 12-20 seconds, and the rising speed of the aluminum alloy melt in the aluminum skin melt injection cavity 8 is 30-40mm per second.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.
Claims (8)
1. Bimetal impeller casing casting mould, its characterized in that: the aluminum-clad sand casting mold comprises a metal mold base (1), wherein the metal mold base (1) is of a plate-shaped structure, the metal mold base (1) is fixedly installed at the bottom of a sand box (3), an aluminum-clad sand shell (4) is tightly attached to the inner wall of the sand box (3), a metal core (2) is arranged in the aluminum-clad sand shell (4), a stainless steel sleeve (5) is fixedly installed on the inner wall of one side, facing the aluminum-clad sand shell (4), of the metal core (2), and an aluminum-clad molten liquid injection cavity (8) is formed between the stainless steel sleeve (5) and the aluminum-clad sand shell (4);
the bottom end of the metal core (2) is hermetically connected with the metal mold base (1), the top end of the metal core (2) is fixedly provided with a riser inner side annular wall (6), a riser cavity (9) is formed between the riser inner side annular wall (6) and the aluminum skin sand shell (4), and the bottom of the riser cavity (9) is communicated with the top of the aluminum skin molten liquid injection cavity (8);
the aluminum-clad sand shell is characterized in that at least one pouring channel (7) is arranged in the aluminum-clad sand shell (4), the top opening of the pouring channel (7) is as high as the top opening of the cap cavity (9), the bottom of the pouring channel (7) is as high as the annular flow channel (10), the annular flow channel (10) is arranged at the bottom of the aluminum-clad sand shell (4), and the annular flow channel (10) is communicated with the bottom of the aluminum-clad molten liquid injection cavity (8) through a bottom flow channel (11).
2. The bimetallic impeller housing casting mold of claim 1, wherein: the aluminum mould base is characterized in that the annular runner (10) is arranged on the outer side of the bottom of the aluminum-clad sand shell (4), the annular runner (10) is an annular cavity formed by the side wall of the aluminum-clad sand shell (4) and the aluminum-clad sand shell (12) at the bottom in a surrounding mode, the aluminum-clad sand shell (12) is fixedly arranged on the upper surface of the metal mould base (1), and the bottom runner (11) is arranged on the contact surface between the bottom end of the inner wall of the aluminum-clad sand shell (4) and the aluminum-clad sand shell (12).
3. The bimetallic impeller housing casting mold of claim 2, wherein: the number of the bottom runners (11) is not less than 2, the bottom runners (11) are uniformly distributed on the bottom edge of the aluminum skin molten liquid injection cavity (8), and each bottom runner (11) is obliquely arranged towards the same side in the horizontal plane.
4. The bimetallic impeller housing casting mold of claim 2, wherein: the vertical setting of metal core (2), the horizontal cross-section of metal core (2) be circular, metal core (2) bottom extend to aluminium skin sand shell (4) one side and form annular diapire, the annular diapire of metal core (2) inlay in the recess of metal mold base (1) upper surface, the bottom of stainless steel cover (5) and the annular diapire in close contact with of metal core (2), the top of stainless steel cover (5) and the inside rampart of rising head bottom plate in close fixed connection (6), the top of stainless steel cover (5) and the top parallel and level of metal core (2).
5. The bimetallic impeller housing casting mold of claim 4, wherein: the vertical cross-section of the riser inner side ring wall (6) is of an L shape, one side of the riser inner side ring wall (6) bottom plate close to the aluminum skin sand shell (4) extends upwards to form a vertical plate, the top end of the vertical plate and the top end of the aluminum skin sand shell (4) are located on the same horizontal plane, and a riser cavity (9) is formed between the vertical plate of the riser inner side ring wall (6) and the aluminum skin sand shell (4).
6. The bimetallic impeller housing casting mold of claim 5, wherein: the outer side wall of the annular bottom wall of the metal core (2) is in close contact connection with the inner side wall of the aluminum skin bottom sand shell (12), and the cavity bottom surface of the aluminum skin molten liquid injection cavity (8) and the channel bottom surface of the bottom runner (11) are located in the same horizontal plane.
7. The bimetallic impeller housing casting mold of claim 1, wherein: the distance between adjacent annular grooves on the surface of the stainless steel sleeve (5) is 5mm, 6-10 longitudinal grooves axially parallel to the stainless steel sleeve (5) are arranged on the surface of the stainless steel sleeve (5), and the longitudinal grooves are uniformly distributed on the surface of the stainless steel sleeve (5); the depth of the annular groove and the depth of the longitudinal groove are both 1 mm.
8. The bimetallic impeller housing casting mold of claim 1, wherein: the bottom of the metal core (2) is clamped into an annular groove on the upper surface of the metal mold base (1) through a bottom flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922102376.4U CN210937080U (en) | 2019-11-29 | 2019-11-29 | Bimetal impeller casing casting mould |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922102376.4U CN210937080U (en) | 2019-11-29 | 2019-11-29 | Bimetal impeller casing casting mould |
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| CN210937080U true CN210937080U (en) | 2020-07-07 |
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| CN201922102376.4U Active CN210937080U (en) | 2019-11-29 | 2019-11-29 | Bimetal impeller casing casting mould |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695342A (en) * | 2019-11-29 | 2020-01-17 | 南京宝泰特种材料股份有限公司 | Casting mold and casting method for bimetal impeller shell |
| CN112839400A (en) * | 2020-12-31 | 2021-05-25 | 四川瀚舟新能源科技有限公司 | Battery heating assembly and manufacturing process thereof |
| CN114919104A (en) * | 2022-04-22 | 2022-08-19 | 恒驰环保设备（南京）有限公司 | Glass fiber reinforced plastic impeller vacuum infusion forming die |
-
2019
- 2019-11-29 CN CN201922102376.4U patent/CN210937080U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695342A (en) * | 2019-11-29 | 2020-01-17 | 南京宝泰特种材料股份有限公司 | Casting mold and casting method for bimetal impeller shell |
| CN112839400A (en) * | 2020-12-31 | 2021-05-25 | 四川瀚舟新能源科技有限公司 | Battery heating assembly and manufacturing process thereof |
| CN112839400B (en) * | 2020-12-31 | 2023-02-03 | 四川瀚舟新能源科技有限公司 | Battery heating assembly and manufacturing process thereof |
| CN114919104A (en) * | 2022-04-22 | 2022-08-19 | 恒驰环保设备（南京）有限公司 | Glass fiber reinforced plastic impeller vacuum infusion forming die |
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