CN203018682U - Thin-wall large-plane blade wheel precision cast investment component - Google Patents
Thin-wall large-plane blade wheel precision cast investment component Download PDFInfo
- Publication number
- CN203018682U CN203018682U CN 201220702501 CN201220702501U CN203018682U CN 203018682 U CN203018682 U CN 203018682U CN 201220702501 CN201220702501 CN 201220702501 CN 201220702501 U CN201220702501 U CN 201220702501U CN 203018682 U CN203018682 U CN 203018682U
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- impeller
- blade wheel
- cover plate
- upper cover
- lower cover
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Abstract
The utility model discloses a thin-wall large-plane blade wheel precision cast investment component and belongs to an investment casting technology. The investment component comprises a blade wheel casting head feeding system and a cast blade wheel, wherein the blade wheel casting head feeding system comprises a top ball dead head, blade wheel middle shaft inner pouring gates, a connection straight pouring channel and blade wheel lower cover plate feeding pouring channels from top to bottom; the cast blade wheel comprises a blade wheel middle shaft which is arranged between the blade wheel middle shaft inner pouring gate and the connection straight pouring channel; a plurality of blade wheel blades are connected outside the blade wheel middle shaft; the other end of each blade wheel blade is connected with a blade wheel upper cover plate and a blade wheel lower cover plate respectively; the blade wheel upper cover plate is a horn pipe; the blade wheel upper cover plate and the blade wheel lower cover plate are symmetric; a plurality of upper cover plate feeding pouring channels are uniformly distributed at the lower part of the outer surface of the top ball dead head; the blade wheel upper cover plate and the blade wheel lower cover plate are respectively connected with the blade wheel upper cover plate feeding pouring channels and the blade wheel lower cover plate feeding pouring channels through a plurality of blade wheel upper cover plate inner pouring gates and a plurality of blade wheel lower cover plate inner pouring gates; and a plurality of first bulges and a plurality of second bulges are respectively distributed on the blade wheel upper cover plate and the blade wheel lower cover plate along the circumference. By the thin-wall large-plane blade wheel precision cast investment component, a thin-wall large-plane blade wheel precision cast shell can be prevented from being cracked, and the one-time qualification rate of a product can be improved.
Description
Technical field
The utility model relates to a kind of model casting technical field of using, espespecially a kind of thin-walled large plane impeller precision castings fusible pattern assembly.
Background technology
Along with the development of melted module precise casting technology, adopt now model casting to produce the high-accuracy foundry goods of thin-walled large plane impeller more and more.As shown in Figure 1, the large plane of existing thin-walled impeller precision castings fusible pattern assembly is comprised of impeller dead head system of risers and the foundry goods impeller 6 ' of wax system.Impeller dead head system of risers comprises heading rising head 1 ', the lateral surface bottom of heading rising head 1 ' is evenly equipped with several impeller upper cover plate feeding running channels 2 ', the following connection impeller axis ingate 3 ' of heading rising head 1 ', the below of impeller axis ingate 3 ' is provided with and connects sprue 4 ', connects the following connection impeller lower cover feeding running channel 5 ' of sprue 4 '.Wherein head a ball rising head 1 ', impeller axis ingate 3 ', connect the dead in line of sprue 4 ', impeller lower cover feeding running channel 5 '.Be connected foundry goods impeller 6 ' between heading rising head 1 ' and impeller lower cover feeding running channel 5 '.Foundry goods impeller 6 ' comprises impeller axis 7 ', impeller axis 7 ' is installed on impeller axis ingate 3 ' and is connected between sprue 4 ', the outer surface of impeller axis 7 ' is connected with several impeller blades 8 ', and the other end of each impeller blade 8 ' is connected with the impeller lower cover with impeller upper cover plate 9 ' respectively ' be connected.Impeller upper cover plate 9 ' is big top and small bottom flaring pipe.Impeller upper cover plate 9 ' and impeller lower cover 10 ' go to upper and lower and are symmetrical arranged.Impeller axis and each blade are arranged in the cavity 11 ' that the upper and lower cover plate of impeller surrounds.Be connected with several impeller upper cover plate ingates 12 ' between each impeller upper cover plate feeding running channel 2 ' and impeller upper cover plate 9 '.Be connected with several impeller lower cover ingates 13 ' between impeller lower cover feeding running channel 5 ' and impeller lower cover 10 '.Each impeller upper cover plate ingate 12 ' goes to upper and lower with each impeller lower cover ingate 13 ' and is symmetrical arranged.because impeller upper cover plate and the impeller lower cover face profile size of this thin-walled large plane impeller precision castings fusible pattern assembly are large, the cover plate wall thickness, after shell processed, local investment shell intensity is inadequate, after roasting at the impeller upper cover plate, impeller lower cover and impeller delivery port marginal position form the shell shake defective on corresponding shell position, what have even can see the impeller upper cover plate after dewaxing, there is crack defect at the shell position that the shell position of corresponding position, the large plane of impeller lower cover and impeller delivery port are corresponding, will form foundry goods bulging defective at impeller upper cover plate and place, the large plane of impeller lower cover after this shell cast that has a shell shake defective, the shell that even directly explodes when cast that has is scrapped, had a strong impact on the disposable qualification rate of shell processed and client's due date.
The utility model content
The purpose of this utility model is to provide a kind of thin-walled large plane impeller precision castings fusible pattern assembly, and the cracking that it can effectively prevent thin-walled large plane impeller precision castings shell improves the first-time qualification rate of product.
to achieve these goals, technical solution of the present utility model is: a kind of thin-walled large plane impeller precision castings fusible pattern assembly, comprise impeller dead head system of risers and foundry goods impeller, described impeller dead head system of risers comprises the heading rising head from top to bottom successively, the impeller axis ingate that is connected with the heading rising head, connect sprue with the impeller lower cover feeding running channel that is connected the sprue connection, described foundry goods impeller comprises the impeller axis, described impeller axis is installed on impeller axis ingate and is connected between sprue, the outer surface of described impeller axis connects several impeller blades, the other end of each described impeller blade respectively with impeller on, lower cover connects, described impeller upper cover plate is big top and small bottom oviduct, on described impeller, lower cover is presented, under be symmetrical arranged, uniform several upper cover plate feeding running channels in outer surface bottom of described heading rising head, be connected several impeller upper cover plate ingates between each described impeller upper cover plate feeding running channel and impeller upper cover plate, be connected several impeller lower cover ingates between described impeller lower cover feeding running channel and impeller lower cover, each described impeller upper cover plate ingate and each impeller lower cover ingate are presented, under be symmetrical arranged, the upper surface of wherein said impeller upper cover plate circumferentially is evenly equipped with several the first projections near outer rim, the lower surface of described impeller lower cover is provided with on several and each the first projection, the second projection of lower symmetry.
The large plane of the utility model thin-walled impeller precision castings fusible pattern assembly, wherein said first and second projection is cylindrical, and the upper end outer rim of described the first projection and the lower end outer rim of the second projection are the fillet that radius is 1.5-2mm.
after adopting such scheme, the large plane of the utility model thin-walled impeller precision castings fusible pattern assembly is by on the impeller of existing impeller casting, lower cover surface near arrange respectively on the circumference of outer rim several first, two projections, like this after this fusible pattern module outer surface coats some layers of refractory metal sand, form by roasting in the process of shell, due to coating surface and first, the two corresponding formation projections of protruding corresponding position, make the stress that the roasting surface is subject to be scatter by these projections, it is stressed can not focus on a certain position, therefore be difficult at shell surface formation crackle, effectively prevent the cracking of thin-walled large plane impeller precision castings shell, improved the disposable qualification rate of product.
Description of drawings
Fig. 1 is the structural representation of existing thin-walled large plane impeller precision castings fusible pattern assembly;
Fig. 2 is the front view of the utility model thin-walled large plane impeller precision castings fusible pattern assembly;
Fig. 3 is the top view of impeller casting of the present utility model.
Below in conjunction with accompanying drawing, by embodiment, the utility model is described further;
The specific embodiment
As shown in Figures 2 and 3, the utility model thin-walled large plane impeller precision castings fusible pattern assembly comprises impeller dead head system of risers and the foundry goods impeller made by wax material.Impeller dead head system of risers comprises heading rising head 1, impeller axis ingate 2, connection sprue 3 and the impeller lower cover feeding running channel 4 that is connected in turn from top to bottom.The foundry goods impeller comprises impeller axis 5, and impeller axis 5 is installed on the upper surface that connects sprue 3, and the outer surface of impeller axis 5 connects several impeller blades 6, and the other end of each impeller blade 6 is connected with the impeller lower cover with impeller upper cover plate 7 respectively and is connected.Impeller upper cover plate 7 is big top and small bottom oviduct.Impeller upper cover plate 7 and impeller lower cover 8 go to upper and lower and are symmetrical arranged.Uniform several upper cover plate feeding running channels 9 in outer surface bottom of heading rising head 1.Be connected several impeller upper cover plate ingates 10 between each impeller upper cover plate feeding running channel 9 and impeller upper cover plate 7.Be connected several impeller lower cover ingates 11 between impeller lower cover feeding running channel 4 and impeller lower cover 8.Each impeller upper cover plate ingate 10 goes to upper and lower with each impeller lower cover ingate 11 and is symmetrical arranged.The upper surface of impeller upper cover plate 7 circumferentially evenly is connected with near outer rim the first projection 12 that several are made by middle temperature wax material, and the lower surface of impeller lower cover 8 evenly is connected with second projection 13 of being made by middle temperature wax material of several and each the first protruding 12 upper and lower symmetries.First projection the 12 and second projection 13 is cylindrical.The lower end outer rim of the upper end outer rim of the first projection 12 and the second projection 13 is the fillet that radius is 1.5-2mm.
The above embodiment is described preferred embodiment of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in this area make the technical solution of the utility model all should fall in the definite protection domain of claims of the present utility model.
Claims (2)
1. thin-walled large plane impeller precision castings fusible pattern assembly, comprise impeller dead head system of risers and foundry goods impeller, described impeller dead head system of risers comprises heading rising head (1) from top to bottom successively, the impeller axis ingate (2) that is connected with heading rising head (1), connect sprue (3) with the impeller lower cover feeding running channel (4) that is connected sprue (3) connection, described foundry goods impeller comprises impeller axis (5), described impeller axis (5) is installed on impeller axis ingate (2) and is connected between sprue (3), the outer surface of described impeller axis (5) connects several impeller blades (6), the other end of each described impeller blade (6) respectively with impeller on, lower cover (7, 8) connect, described impeller upper cover plate (7) is big top and small bottom oviduct, on described impeller, lower cover (7, 8) present, under be symmetrical arranged, uniform several upper cover plate feeding running channels (9) in outer surface bottom of described heading rising head (1), be connected several impeller upper cover plate ingates (10) between each described impeller upper cover plate feeding running channel (9) and impeller upper cover plate (7), be connected several impeller lower cover ingates (11) between described impeller lower cover feeding running channel (4) and impeller lower cover (8), each described impeller upper cover plate ingate (10) is presented with each impeller lower cover ingate (11), under be symmetrical arranged, it is characterized in that: the upper surface of described impeller upper cover plate (7) circumferentially is evenly equipped with several the first projections (12) near outer rim, the lower surface of described impeller lower cover is provided with on several and each the first projection (12), second projection (13) of lower symmetry.
2. the large plane of thin-walled as claimed in claim 1 impeller precision castings fusible pattern assembly, it is characterized in that: described first and second projection (12,13) be cylindrical, the lower end outer rim of the upper end outer rim of described the first projection (12) and the second projection (13) is the fillet that radius is 1.5-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220702501 CN203018682U (en) | 2012-12-18 | 2012-12-18 | Thin-wall large-plane blade wheel precision cast investment component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220702501 CN203018682U (en) | 2012-12-18 | 2012-12-18 | Thin-wall large-plane blade wheel precision cast investment component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203018682U true CN203018682U (en) | 2013-06-26 |
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ID=48642696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220702501 Expired - Lifetime CN203018682U (en) | 2012-12-18 | 2012-12-18 | Thin-wall large-plane blade wheel precision cast investment component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203018682U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103658535A (en) * | 2014-01-06 | 2014-03-26 | 山东建筑大学 | Investment casting process of large copper impeller |
| CN105344935A (en) * | 2015-12-03 | 2016-02-24 | 中国南方航空工业(集团)有限公司 | Closed impeller wax mold manufacturing method |
| CN105834376A (en) * | 2016-05-26 | 2016-08-10 | 重庆水泵厂有限责任公司 | Centrifugal pump impeller casting process |
-
2012
- 2012-12-18 CN CN 201220702501 patent/CN203018682U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103658535A (en) * | 2014-01-06 | 2014-03-26 | 山东建筑大学 | Investment casting process of large copper impeller |
| CN105344935A (en) * | 2015-12-03 | 2016-02-24 | 中国南方航空工业(集团)有限公司 | Closed impeller wax mold manufacturing method |
| CN105834376A (en) * | 2016-05-26 | 2016-08-10 | 重庆水泵厂有限责任公司 | Centrifugal pump impeller casting process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |