CN102794393A - Moulding method for producing hydropower blade without sandbox - Google Patents
Moulding method for producing hydropower blade without sandbox Download PDFInfo
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- CN102794393A CN102794393A CN201110133121XA CN201110133121A CN102794393A CN 102794393 A CN102794393 A CN 102794393A CN 201110133121X A CN201110133121X A CN 201110133121XA CN 201110133121 A CN201110133121 A CN 201110133121A CN 102794393 A CN102794393 A CN 102794393A
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- blades
- blade
- sandbox
- molding sand
- sand
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Abstract
The invention discloses a molding method for producing hydropower blades without a sandbox. The method comprises the steps of A. placing two blades on a flat surface of moulding sand, wherein the two blades are arranged oppositely and form two side vertical surfaces; B. fixing the blades forming the two vertical surfaces; C. ramming the outside surfaces of the fixed two blades with the moulding sand; D. ramming the inside curved surfaces of the blade samples after ramming of the outside curved surface of the blades is completed and after the moulding sand is hardened completely; and E. enclosing the blade samples with a core box when the inside curved surfaces of the blades are moulded, filling with the moulding sand, thus forming sand cores after the moulding sand is hardened, then removing the sand core of the inside curved surfaces and drawing the blade samples from the mould; and F. modifying and painting working surfaces of the two side sand cores, and drying. The method has the advantages that the sandbox is not used, an overturn is not needed in the whole production process, thereby improving the dimensional accuracy of the blades; and that the operation is convenient.
Description
Technical field:
The present invention relates to a kind of system type method of producing hydroelectric blades, particularly a kind of system type method of not having sandbox production hydroelectric blades.
Background technology:
Now when cast blade, because blade is the hyperboloid structure, like this when cast blade; The general flange process of vertical upright casting up that adopts; Produced like this blade can be regarded a tabular curved body that is standing as, but this tabular curved body when being not easy to general formative method molding and repair type, therefore because spoon of blade is irregular, area is big; So must adopt old technology conceptual design sandbox, work such as moulding mould assembling, lifting and upset are all caused very big difficulty.
Summary of the invention:
The objective of the invention is provides a kind of and need not use sandbox in order to overcome above deficiency, does not need upset in process of production, improves the blade dimensions precision, and easy to operate no sandbox is produced the system type method of hydroelectric blades.
The object of the invention is realized through following technical scheme: a kind of system type method of not having sandbox production hydroelectric blades may further comprise the steps:
A, two blades are placed on the plane of molding sand, two blades are placed relatively, make two blades form the both sides facades;
B, the blade that will form two side elevations are fixed;
On C, the two blade lateral surfaces after will fixing with the molding sand reality of pounding;
Treat the complete oriental cherry of molding sand after D, the real completion of outside blade, pounding, the system of pounding blade full pattern inner curve;
E, when the inboard system type of blade, adopt core box that blade full pattern inner curve is fenced up, and fill, after the molding sand sclerosis, form core, and the inner curve core is removed, the molding of blade full pattern with molding sand;
F, the working face of both sides core is repaiied type, swabbing, and oven dry.
The present invention compared with prior art has the following advantages: adopt directly system type of full pattern, two facade branches of blade are pounded, and after treating the molding sand sclerosis after the N-Side surf system of pounding is accomplished outside blade; The system of just pounding blade inner curve; Adopt vertical pouring, need not use sandbox like this, do not need upset in the whole process of production; Improved the dimensional accuracy of blade, and easy to operate.
The specific embodiment:
In order to deepen to understanding of the present invention, will combine embodiment that the present invention is made further detailed description below, this embodiment only is used to explain the present invention, does not constitute the qualification to protection domain of the present invention.
The present invention shows a kind of specific embodiment that sandbox is produced the system type method of hydroelectric blades of not having, and may further comprise the steps:
A, two blades are placed on the plane of molding sand, two blades are placed relatively, make two blades form the both sides facades;
B, the blade that will form two side elevations are fixed;
On C, the two blade lateral surfaces after will fixing with the molding sand reality of pounding;
Treat the complete oriental cherry of molding sand after D, the real completion of outside blade, pounding, the system of pounding blade full pattern inner curve;
E, when the inboard system type of blade, adopt core box that blade full pattern inner curve is fenced up, and fill, after the molding sand sclerosis, form core, and the inner curve core is removed, the molding of blade full pattern with molding sand;
F, the working face of both sides core is repaiied type, swabbing, and oven dry.
This method adopts directly system type of full pattern, and two facade branches of blade are pounded, and after treating the molding sand sclerosis after the N-Side surf system of pounding is accomplished outside blade; The system of just pounding blade inner curve; Adopt vertical pouring, need not use sandbox like this, do not need upset in the whole process of production; Improved the dimensional accuracy of blade, and easy to operate.
Claims (1)
1. one kind is not had the system type method that sandbox is produced hydroelectric blades, it is characterized in that, may further comprise the steps:
A, two blades are placed on the plane of molding sand, two blades are placed relatively, make two blades form the both sides facades;
B, the blade that will form two side elevations are fixed;
On C, the two blade lateral surfaces after will fixing with the molding sand reality of pounding;
Treat the complete oriental cherry of molding sand after D, the real completion of outside blade, pounding, the system of pounding blade full pattern inner curve;
E, when the inboard system type of blade, adopt core box that blade full pattern inner curve is fenced up, and fill, after the molding sand sclerosis, form core, and the inner curve core is removed, the molding of blade full pattern with molding sand;
F, the working face of both sides core is repaiied type, swabbing, and oven dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110133121XA CN102794393A (en) | 2011-05-23 | 2011-05-23 | Moulding method for producing hydropower blade without sandbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110133121XA CN102794393A (en) | 2011-05-23 | 2011-05-23 | Moulding method for producing hydropower blade without sandbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102794393A true CN102794393A (en) | 2012-11-28 |
Family
ID=47193839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110133121XA Pending CN102794393A (en) | 2011-05-23 | 2011-05-23 | Moulding method for producing hydropower blade without sandbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102794393A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846079A (en) * | 2021-01-05 | 2021-05-28 | 中国第一重型机械股份公司 | Modeling control method for large water turbine blade sand mold |
-
2011
- 2011-05-23 CN CN201110133121XA patent/CN102794393A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846079A (en) * | 2021-01-05 | 2021-05-28 | 中国第一重型机械股份公司 | Modeling control method for large water turbine blade sand mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Niansheng Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| DD01 | Delivery of document by public notice |
Addressee: Zhang Niansheng Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121128 |